Category: Instrumentation

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Comprehensive Analysis of Anemometers: Working Principle, Usage, Common Faults, and Repair Guide

I. Working Principle of Anemometers

Anemometers operate primarily based on the hot-wire effect. The core component is a fine metal wire (typically made of high-melting, ductile metals such as platinum, rhodium, or tungsten) placed in a fluid and heated by an electric current to a temperature higher than the surrounding fluid. When fluid (e.g., air) flows vertically past the wire, it carries away some heat, causing the wire’s temperature to drop. According to the theory of forced convective heat transfer, there is a direct relationship between the heat lost by the wire and the fluid’s velocity. By measuring the heat loss, the fluid’s velocity can be inferred.

II. Usage of Anemometers

Preparation Stage:

  1. Check if the anemometer’s pointer is at zero; if not, gently adjust the mechanical screw to zero.
  2. Insert the measuring rod plug into the socket, position the rod vertically, and tighten the screw cap to ensure the probe is sealed.
  3. Set the “calibration switch” to the full-scale position and adjust the “full-scale adjustment” knob so that the pointer indicates full scale.

Measurement Process:

  1. Set the “calibration switch” to “zero,” then adjust the “coarse” and “fine” knobs to return the pointer to zero.
  2. Gently pull the screw cap to expose the probe and ensure the red dot on it faces the wind direction.
  3. Based on the meter reading, consult the calibration curve to obtain the measured wind speed.
  4. After measuring for a while (about 10 minutes), repeat the steps to standardize the current within the instrument.

Data Recording and Viewing:

  1. To record data, press the record button, and the anemometer will automatically save the measurements.
  2. Press the playback button to view previously measured data.

III. Common Faults and Repair Methods for Anemometers

No Output:

  1. Power Issues: Check if the power cord is securely connected and measure the voltage stability.
  2. Sensor Damage: Inspect the sensing element or circuit board for damage and replace the sensor if necessary.
  3. Signal Transmission Problems: Check the signal wire connection, measure its integrity, and eliminate interference sources.

Abnormal Wind Speed Indication:

  1. Reduced Sensor Sensitivity: Recalibrate the sensor or replace it with a new one.
  2. Improper Installation: Ensure the sensor is installed in an unobstructed, vibration-free, and non-corrosive gas environment.

Stiff or Jammed Rotation:

  1. Mechanical Faults: Check the sensor’s rotating parts for debris or wear, clean or replace components as needed.
  2. Damaged Bearings: Replace damaged bearings to ensure smooth rotation.

Signal Interference:

  1. Electromagnetic Interference: Check if the signal wire is shielded and keep it away from electromagnetic interference sources.
  2. Radio Frequency Interference: Use sensors with stronger anti-interference capabilities or adjust the signal transmission method.

IV. Precautions for Using Anemometers

  1. Ensure the anemometer is correctly calibrated before use and recalibrate periodically.
  2. Avoid using the anemometer in combustible gas environments to prevent fires or explosions.
  3. Do not expose the anemometer’s probe and body to rain to prevent electric shock or fire.
  4. Clean the anemometer’s surface with soft fabric and neutral detergent; avoid using volatile liquids.
  5. Store the anemometer in a dry, ventilated, dust-free environment, away from high temperatures, humidity, and direct sunlight.
  6. Avoid subjecting the anemometer to strong impacts or vibrations to prevent damaging internal components.

V. Brands and Models of Anemometers Repaired by Longi Electromechanical

  1. Testo
    • Testo 410 Series: 410-1 (Vane Anemometer), 410-2 (Vane Anemometer with Humidity Measurement)
    • Testo 425 (Hot-Wire Anemometer)
    • Testo 440 (Multifunction Anemometer)
    • Testo 480 (Professional Environmental Tester for Multiple Sensors)
  2. Kestrel
    • Kestrel 5000 Series: 5100 (Wind Speed and Air Flow Meter), 5200 (Professional Weather Station with Environmental Measurement)
    • Kestrel 1000 (Portable Anemometer)
    • Kestrel 2000 (Anemometer with Temperature Measurement)
  3. Extech
    • AN300 (Vane Anemometer)
    • AN400 (Hot-Wire Anemometer)
    • AN500 (Air Velocity and Flow Meter)
    • HD300 (Hot-Wire Anemometer with Data Logging)
  4. Davis Instruments
    • Vantage Pro2 (Wireless Weather Station with Wind Speed Measurement)
    • Vantage Vue (Wireless Weather Station with Portable Design)
    • Anemometer (Professional Wind Speed Sensor)
  5. Kanomax
    • 6006 (Hot-Wire Anemometer)
    • 6803 (Multifunction Anemometer with Data Logging)
    • 6810 (Vane Anemometer)
  6. TSI
    • 9535 (Hot-Wire Anemometer with Data Logging)
    • 9545 (Hot-Wire Anemometer with Temperature and Humidity Measurement)
    • 5725 (Portable Anemometer)
  7. Omega
    • HHF-SD1 (Hot-Wire Anemometer with Data Logging)
    • FMA-905 (Hot-Wire Anemometer with Temperature Measurement)
    • HHF81 (Portable Anemometer)
  8. Fluke
    • 922 (Low-Velocity Anemometer)
    • 925 (Hot-Wire Anemometer)
    • 971 (Temperature and Humidity Meter with Wind Speed Measurement)
  9. Alnor
    • EBT731 (Air Velocity and Flow Meter with Data Logging)
    • RVA801 (Portable Anemometer)
    • EBT720 (Professional Anemometer with Temperature and Humidity Measurement)
  10. Amprobe
    • TMA-21HW (Hot-Wire Anemometer with Temperature and Humidity Measurement)
    • TMA-5 (Portable Anemometer)
    • TMA-40A (Air Velocity and Flow Meter)
  11. CEM Instruments
    • DT-8894 (Vane Anemometer with Data Logging)
    • DT-618 (Hot-Wire Anemometer with Temperature and Humidity Measurement)
    • DT-318 (Portable Anemometer)
  12. La Crosse Technology
    • EA-3010U (Air Velocity and Flow Meter)
    • TX60U-IT (Wireless Anemometer)
    • WS-2310 (Wireless Weather Station with Wind Speed Measurement)
  13. PCE Instruments
    • PCE-TA 30 (Hot-Wire Anemometer)
    • PCE-009 (Portable Anemometer with Temperature Measurement)
    • PCE-AM 85 (Portable Anemometer with Humidity Measurement)
  14. Lutron
    • AM-4204 (Vane Anemometer)
    • AM-4210 (Hot-Wire Anemometer)
    • AM-4220 (Portable Anemometer)

Longi Electromechanical Company has nearly 30 years of experience in repairing anemometers and can quickly repair various instruments. Additionally, they recycle and sell used anemometers. For inquiries, please contact us.

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Displacement Sensors Explained: Working Principle, Usage, Common Faults, and Repair Guide

Displacement sensors, also known as linear sensors, are devices used to measure the position changes of objects or structures. They convert the displacement of an object relative to a reference point into electrical signals, enabling monitoring and control of position changes. Displacement sensors are widely used in industrial automation, structural monitoring, healthcare, automotive engineering, and more.

I. Working Principle of Displacement Sensors

Displacement sensors consist of a sensing element and a conversion element. The sensing element detects the position change of the measured object, while the conversion element translates this change into electrical signals or other forms of output. Based on their working principles, displacement sensors are classified into several types:

  1. Inductive Displacement Sensors: Measure position changes by detecting variations in inductance. Typically composed of a fixed coil and a movable coil, where the inductance changes as the movable coil approaches or recedes from the fixed one.
  2. Capacitive Displacement Sensors: Measure position changes by detecting variations in capacitance between two parallel plates, one of which is movable.
  3. Photoelectric Displacement Sensors: Utilize light reflection and transmission to detect position changes, using a light source, receiver, and movable reflector.
  4. Hall Effect Displacement Sensors: Rely on the Hall effect, where a magnetic field change induces a measurable voltage in a semiconductor material, indicating position changes.

II. How to Use Displacement Sensors

Using the 4000TDZ-A displacement sensor as an example, it is mainly used to measure radial and axial displacements of shafts to monitor vibrations during equipment operation. The steps for proper use are as follows:

  1. Identify the Measurement Points: Select appropriate measurement points based on equipment and vibration requirements. Measurement points should generally be along the centerline of the equipment.
  2. Install the Sensor: Fix the sensor securely at the measurement point, ensuring correct orientation and stable attachment.
  3. Connect Cables: Connect the sensor cables to the data acquisition system for transmitting the vibration data for processing.
  4. Start the Equipment: Once the equipment is running, the sensor automatically starts measuring vibrations.
  5. Data Collection and Analysis: Use the data acquisition system to gather and analyze the vibration data, adjusting and maintaining the equipment accordingly.
  6. Periodic Calibration: Regular calibration ensures accurate and reliable measurements.

III. Common Faults and Repair Methods for Displacement Sensors

  1. Inaccurate Measurements:
  • Causes: Laser beam obstruction, surface reflectivity changes, ambient light interference, or electronic noise.
  • Repair: Check the laser beam path for obstructions, ensure stable reflectivity, reduce ambient light interference, and verify proper grounding of electronic devices.
  1. Unstable Measurement Values:
  • Causes: Calibration errors, temperature fluctuations, mechanical vibrations, or optical contamination (e.g., dirty lenses).
  • Repair: Check calibration certificates, ensure environmental temperature and vibration are within sensor specifications, and clean lenses regularly.
  1. No Signal Output:
  • Causes: Damaged cables, loose connections, communication protocol mismatch, or power issues.
  • Repair: Inspect cable integrity, secure connections, verify communication protocol and baud rate settings, and ensure stable power supply.
  1. Sensor Damage:
  • Causes: Accidental impact, overuse, or improper installation.
  • Repair: Inspect the sensor casing for cracks or deformation, ensure proper installation to avoid external force damage, and use suitable mounting accessories for stability.

IV. Conclusion

Displacement sensors play a vital role in various industries. Understanding their working principles, mastering correct usage methods, and diagnosing common faults is crucial for ensuring the accuracy of measurement data and the safe operation of equipment. Regular calibration and maintenance of sensors are essential for maintaining performance and accuracy.

V. Displacement Sensors Repaired by Longi Electromechanical – Brands and Models

Rongji Electromechanical has extensive experience in repairing various brands and models of displacement sensors, including:

  1. Keyence:
  • LVDT Series:
  • GT2 Series: GT2-A12, GT2-A32, GT2-H12, GT2-H32
  • GT-7000 Series: GT-701, GT-703, GT-706
  • Laser Displacement Sensors:
  • LK-G5000 Series: LK-G502, LK-G507, LK-G508
  • IL Series: IL-030, IL-065, IL-100
  1. Micro-Epsilon:
  • Eddy Current Displacement Sensors:
    • eddyNCDT 3001: EDS-05, EDS-10
    • eddyNCDT 3100: EDS-18, EDS-28
  • Laser Displacement Sensors:
    • optoNCDT 1420: ILD1420-10, ILD1420-200
    • optoNCDT 2300: ILD2300-2, ILD2300-10
  1. SICK:
  • OD Precision Series:
    • OD2-P20W10 (10mm measuring range)
    • OD2-P30W15 (15mm measuring range)
  • OD Value Series:
    • OD2-B160 (60mm measuring range)
    • OD2-B210 (100mm measuring range)
  1. Omron:
  • ZX2 Series: ZX2-LD50, ZX2-LD100
  • ZX-E Series: ZX-E010, ZX-E025
  • LVDT Series:
  • E2E-X Series: E2E-X5ME1, E2E-X8ME1
  1. Baumer:
  • Eddy Current Displacement Sensors:
    • WFM Series: IWFM 12P1701/S35A, IWFM 18P1701/S35A
  • Laser Displacement Sensors:
    • OADM Series: OADM 12I6440/S14F, OADM 20I4470/S14F
  1. Banner Engineering:
  • Laser Displacement Sensors:
    • L-GAGE LE Series: LE250, LE550
  • Ultrasonic Displacement Sensors:
    • T30UX Series: T30UX1, T30UX2
  1. HBM (Hottinger Baldwin Messtechnik):
  • Eddy Current Displacement Sensors:
    • C2/C3 Series: C2-100, C2-200
    • WPS Series: WPS-100, WPS-200
  • Laser Displacement Sensors:
    • T100 Series: T100-100, T100-200
  1. Novotechnik:
  • Rotary Displacement Sensors:
    • RFC4800 Series: RFC4800-6, RFC4800-8
    • RFX6900 Series: RFX6900-6, RFX6900-8
  • Linear Displacement Sensors:
    • LWH Series: LWH-100, LWH-200
    • TR Series: TR-100, TR-200
  1. Lion Precision:
  • Capacitive Displacement Sensors:
    • CPL190 Series: CPL190-5, CPL190-10
    • CPL490 Series: CPL490-20, CPL490-50
  • Eddy Current Displacement Sensors:
    • ECL101 Series: ECL101-5, ECL101-10
    • ECL150 Series: ECL150-20, ECL150-50
  1. Kaman Precision Products:
  • Eddy Current Displacement Sensors:
    • KD-2306 Series: KD-2306-5, KD-2306-10
    • KD-5100 Series: KD-5100-20, KD-5100-50
  • Capacitive Displacement Sensors:
    • DIT-5200 Series: DIT-5200-5, DIT-5200-10
    • DIT-5300 Series: DIT-5300-20, DIT-5300-50
  1. OMEGA Engineering:
  • LVDT Series:
    • LD610 Series: LD610-50, LD610-100
    • LD620 Series: LD620-200, LD620-300
  • Laser Displacement Sensors:
    • LD702 Series: LD702-50, LD702-100
    • LD752 Series: LD752-200, LD752-300
  1. Solartron Metrology:
  • Orbit ACS Series:
    • D6P (6mm displacement)
    • D10P (10mm displacement)
  1. Linear Displacement Sensors Series:
  • DP/2S: 2mm displacement
  • DP/10S: 10mm displacement

14.

Balluff:

  • Magnetostrictive Displacement Sensors:
    • BIL Series: BIL PA0, BIL SA1
  • Inductive Displacement Sensors:
    • BES Series: BES 516-100, BES 517-105
  • Optical Displacement Sensors:
    • BOH Series: BOH 0012, BOH 0025

Longi Electromechanical has 30 years of experience in repairing and troubleshooting displacement sensors and other industrial components. In addition to repairs, the company also provides purchasing and sales services for second-hand displacement sensors. Feel free to contact us for more information.

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Turbidity Analyzer: Working Principle, Usage, Common Faults, and Repair Guide – Online Low-Range Turbidity Analyzer

I. Introduction

The turbidity analyzer is a precision instrument specifically designed to measure the turbidity of liquids. It finds wide applications in drinking water testing, industrial production, wastewater treatment, beverage production, and laboratory research. By measuring the degree of light scattering caused by insoluble particles in the liquid, it assesses the clarity of the liquid, providing crucial data support for water quality safety and product quality control.

II. Working Principle

The turbidity analyzer operates based on the principle of light scattering. When a beam of light passes through a liquid containing suspended particles, these particles scatter the light. The intensity of scattered light is proportional to the concentration of particles in the liquid. The analyzer emits a beam of light into the sample and calculates the turbidity by measuring the intensity of scattered light. Depending on the measurement principle, turbidity analyzers can be divided into two types: scattering method and transmission method.

  • Scattering Method: Calculates turbidity by measuring the intensity of scattered light at a certain angle (e.g., 90°) to the incident light. Suitable for measuring low-turbidity water samples.
  • Transmission Method: Calculates turbidity by measuring the degree of attenuation of light after it passes through the water sample (i.e., the ratio of transmitted light intensity to incident light intensity). Suitable for measuring high-turbidity water samples.

III. Usage

Preparation:

  1. Remove the instrument from the packaging box and place it on a horizontal and stable workbench.
  2. Check if all parts of the instrument are intact. Clean the water tank and fill it with pure or deionized water to the top.
  3. Clean the glass cuvette to ensure it is clean and stain-free.

Instrument Calibration:

  1. Preheat the instrument for 10 minutes.
  2. Use a turbidity standard plate for calibration to ensure that the displayed reading matches the factory calibrated value of the standard plate.

Sample Measurement:

  1. Add water with zero turbidity to the cuvette as a blank control and adjust the instrument to zero.
  2. Add the sample to be tested to the cuvette, ensuring no bubbles or residue on the cuvette walls.
  3. Place the cuvette into the instrument, and the displayed value is the turbidity value (NTU) of the tested liquid.

Data Processing:

  1. Record the measurement results as needed for data processing and analysis.

IV. Common Faults and Repair Methods

Power Issues:

  • Fault Phenomenon: The power light is not on.
  • Repair Method: Check if the power plug is securely inserted and if the socket is well-contacted. If the power is confirmed to be normal, the fuse may have blown and needs to be replaced.

Unstable Readings:

  • Fault Phenomenon: The measured readings fluctuate greatly.
  • Repair Method: Check if there are bubbles in the sample and wait for them to dissipate before measuring. Check if there is water or residue inside or outside the cuvette and dry it with filter paper. Confirm if the solution temperature is too high and wait for it to cool before measuring.

Large Measurement Errors:

  • Fault Phenomenon: The measured results deviate significantly from expectations.
  • Repair Method: Recalibrate the instrument, ensuring the standard plate is clean and stain-free. Check if the cuvette matches the current range. Confirm if the sample meets the measurement requirements, avoiding contamination or evaporation.

Sensor Faults:

  • Fault Phenomenon: The instrument does not work properly or displays abnormalities.
  • Repair Method: Check if the sensor is correctly connected and not damaged. Clean the sensor surface to remove stains or adherents. If the sensor is severely damaged, it needs to be replaced.

Software or Setting Issues:

  • Fault Phenomenon: The instrument’s operation interface is abnormal or parameters cannot be set.
  • Repair Method: Refer to the user manual to confirm if the software version is compatible. Check if the settings are correct and adjust them according to the manual. If the problem persists, contact the manufacturer or supplier for technical support.

V. Brands and Models of Turbidity Analyzers Repaired by Rongji Electromechanical Company

  1. Hach
    • 2100Q Portable Turbidimeter
    • 2100N Laboratory Turbidimeter
    • TL23 Series Laboratory Turbidimeter
    • TU5200 Laboratory Laser Turbidimeter
    • TU5300 Online Laser Turbidimeter
    • TU5400 Online Laser Turbidimeter
    • Online Low-Range Turbidity Analyzer SC200
  2. Thermo Fisher Scientific
    • Orion AQ4500 Turbidimeter
    • Orion AQ3010 Portable Turbidimeter
    • Orion AQ4000 Laboratory Turbidimeter
    • Orion AQ3700 Portable Turbidimeter
  3. YSI (a Xylem brand)
    • TSS Portable Turbidimeter
    • P700 IQ Online Turbidimeter
    • 9500 Turbidity Meter
    • 9300 Portable Turbidimeter
  4. LaMotte
    • 2020we Portable Turbidimeter
    • 2020wi Laboratory Turbidimeter
    • 2020t Turbidity Meter
  5. Hanna Instruments
    • HI98703 Portable Turbidity Meter
    • HI88703 Laboratory Turbidity Meter
    • HI88713 EPA Compliant Turbidity Meter
    • HI98713 Portable Turbidity Meter
  6. WTW (a Xylem brand)
    • Turb 430 IR Portable Turbidimeter
    • Turb 355 IR/T Laboratory Turbidimeter
    • Turb 555 IR Benchtop Turbidimeter
  7. Lovibond (Tintometer)
    • TB 210 IR Portable Turbidimeter
    • TB 300 IR Laboratory Turbidimeter
    • TB 350 WL/IR Benchtop Turbidimeter
  8. Apera Instruments
    • TN400 Portable Turbidimeter
    • TN500 Laboratory Turbidimeter
    • TN600 Online Turbidimeter
  9. Eutech Instruments (Thermo Fisher Scientific)
    • TN-100 Portable Turbidimeter
    • TN-200 Laboratory Turbidimeter
    • TN-1000 Laboratory Turbidimeter
  10. Hach Ultra (formerly Anatel)
    • ANATEL PAT700
    • ANATEL PAT800
  11. Merck Millipore
    • Spectroquant Turb® 430 IR Portable Turbidimeter
    • Spectroquant Turb® 550 Laboratory Turbidimeter
  12. Extech Instruments
    • TB400 Portable Turbidity Meter
    • TB400-LAB Laboratory Turbidity Meter
  13. Palintest
    • Compact Turbimeter
    • PT 600 Series Laboratory Turbidimeter
  14. Horiba
    • LAQUA T-300 Portable Turbidity Meter
    • U-50 Series Multiparameter Meter
  15. Met One Instruments
    • 202-5 Portable Turbidimeter
    • Hach Ultra 2500 Laboratory Turbidimeter

VI. Conclusion

The turbidity analyzer is an important water quality testing device that works based on the principle of light scattering. During usage, strict adherence to the instructions and proper maintenance are essential to ensure the accuracy of measurement results and the long-term stable operation of the instrument. For common faults, users can troubleshoot and address them according to the aforementioned repair methods. If necessary, technical support from Rongji Electromechanical Company can be sought. Rongji Electromechanical Company has nearly 30 years of experience in repairing turbidity analyzers (online turbidity analyzers) and can quickly repair various types of instruments. Additionally, they recycle and sell various used turbidity analyzers (online turbidity analyzers). For more information, please contact us.

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Programmable DC Power Supply: Principles, Usage, Brand,Troubleshooting, and Models Serviced

I. Principles of Programmable DC Power Supply

Programmable DC power supplies are advanced power equipment integrating control circuits, power conversion circuits, and switching regulator circuits. They feature high precision, strong stability, and high programmability. By utilizing digital control methods, these power supplies precisely regulate output voltage and current, making them widely applicable in scientific research, industrial production, and communication fields.

Core Components:

  • Power Module: Converts input AC to stable DC for load use, involving rectification, filtering, and voltage regulation.
  • Control System: Utilizes DSP and microcontrollers to receive user inputs or programming instructions, precisely adjusting the output parameters of the power module to ensure stable output voltage and current.

II. Usage of Programmable DC Power Supply

When using a programmable DC power supply, follow these steps:

  1. Connect Power: Properly connect the power supply to an AC power socket and ensure stable power lines.
  2. Set Parameters: Use the device’s control panel or software interface to set the required output voltage and current parameters, adjusting them to meet the experimental needs of the tested equipment.
  3. Connect Load: Use output cables to connect the power supply to the electronic device under test, ensuring a secure connection to avoid voltage drops.
  4. Start Power Supply: Press the start button to begin outputting voltage and current. Monitor and adjust output parameters as needed during operation.
  5. Experiment & Testing: Observe the reaction and performance of the tested device, adjusting the output voltage and current as necessary to ensure stable operation during the experiment.
  6. Turn Off Power: After the experiment or test, promptly turn off the power supply and disconnect it from the tested device.

III. Troubleshooting and Repair Methods for Programmable DC Power Supplies

Programmable DC power supplies may encounter various faults during use. Here are some common faults and their repair methods:

  • No Output Voltage:
    • Check if the power switch is on.
    • Ensure reliable connection between the input power and input terminals.
    • Check if the DC power supply is in overload protection mode.
  • Unstable Output Voltage:
    • Check and stabilize the input voltage within a reasonable range.
    • Consider paralleling TVS or Zener diodes at the input if there is interfering voltage.
    • Check for load overload or short circuit, and adjust or replace the corresponding external circuit.
  • Excessive Output Ripple Noise:
    • Adjust or optimize the power supply design as needed, such as increasing filter capacitors.
  • Sudden Power Shutdown:
    • Check if the display is on to confirm power supply operation.
    • Inspect the input circuit for sparking or load overload/short circuit, which may cause the input control switch to trip. If tripped, disconnect the load and wait 1-2 minutes before attempting to restart.
  • Fluctuating Output Voltage:
    • Check if the DC power supply is operating overloaded and remove excess load.
    • Ensure secure and reliable connections between input/output terminals and wires.
  • Inability to Increase No-Load Voltage or Adjust Output Voltage in Constant Current Mode:
    • Ensure the “current adjustment” is not set to zero and understand the concepts of “constant voltage” and “constant current” for proper adjustment.

IV. Models of Programmable DC Power Supplies Serviced by Longi Electromechanical

1. Keysight Technologies (formerly Agilent Technologies):

  • N8900 Series: N8920A (20 kW), N8937A (15 kW)
  • N6700 Series: N6705C (600W modular DC power supply), N6702C (400W modular DC power supply)
  • B2900A Series: B2912A precision power supply

2. Tektronix:

  • Keithley Series: 2260B-800-1 (800V, 1.44kW), 2230G-30-1 (3-channel programmable power supply)
  • PA1000 Series: PA1000 (single-channel power analyzer)

3. Rohde & Schwarz:

  • HMP Series: HMP4040 (4-channel programmable power supply), HMP2020 (2-channel programmable power supply)
  • NGA100 Series: NGA142 (2-channel, 200W), NGA102 (single-channel, 80W)

4. Chroma:

  • 62000D Series: 62012D-600-8 (600V, 8A, 1200W), 62006D-1000-6 (1000V, 6A, 600W)
  • 62000P Series: 62024P-40-120 (40V, 120A, 2400W), 62012P-600-8 (600V, 8A, 1200W)

5. TDK-Lambda:

  • GENESYS Series: GEN60-25 (60V, 25A), GEN150-10 (150V, 10A)
  • Z+ Series: Z+200-5 (200V, 5A), Z+400-3.3 (400V, 3.3A)

6. Sorensen (AMETEK Programmable Power):

  • SGX Series: SGX60-500 (60V, 500A), SGX150-300 (150V, 300A)
  • XG Series: XG 170-12.5 (170V, 12.5A), XG 60-40 (60V, 40A)

7. GW Instek:

  • PSW Series: PSW 80-13.5 (80V, 13.5A), PSW 160-7.2 (160V, 7.2A)
  • GPP Series: GPP-6030 (60V, 3A), GPP-4323 (32V, 3A)

8. Aim-TTi:

  • PLH Series: PLH250-P (250V, 1A), PLH120-P (120V, 1.5A)
  • QPX Series: QPX600DP (600V, 1.2A), QPX1200SP (60V, 50A)

9. BK Precision:

  • 9200 Series: 9201 (60V, 5A), 9205 (250V, 2A)
  • 8500 Series: 8512 (60V, 60A, 1200W), 8514 (500V, 15A, 3000W)

10. Rigol:

  • DP800 Series: DP832 (30V, 3A), DP831A (30V, 3A)
  • DP2000 Series: DP2116A (160V, 20A), DP2216A (160V, 20A)

11. EA Elektro-Automatik:

  • PSI 9000 Series: PSI 9200-120-30 (120V, 30A), PSI 9360-48-180 (48V, 180A)
  • ELR 9000 Series: ELR 9080-170-160 (80V, 160A), ELR 9210-30-75 (210V, 75A)

12. TDK-LAMBDA (Japan):

  • ZUP Series: Various models including ZUP6-33, ZUP10-20, etc.
  • GENESYS+™ Series
  • GEN Series: Various models including GEN80-65, GEN100-50, etc.
  • GH Series: GH40-38

13. ZEEMAN:

  • DLC Series: DLC6000, DLC5000

Longi Electromechanical Company specializes in the long-term maintenance of programmable DC power supplies (including Leman power supplies and other DC power supplies), with nearly 30 years of experience in repairs, enabling us to quickly repair various instruments. Additionally, we recycle and sell various types of used programmable DC power supplies (including Leman power supplies and other DC power supplies). Welcome to consult us.

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Gauss Meter (Magnetic Field Meter) Comprehensive Analysis: Principles, Brand,Usage, Common Faults, and Repair Methods

Gauss Meter (Magnetic Field Meter) Comprehensive Analysis: Principles, Usage, Common Faults, and Repair Methods

I. Overview of Gauss Meter

The Gauss Meter, also known as a magnetic field meter, is a precision instrument used to measure the intensity of magnetic fields. Based on the Hall effect or Faraday’s law of electromagnetic induction, it can measure the static or dynamic (AC) magnetic induction intensity of an object at a single point in space. Widely applied in magnetic material production, metrological testing, machinery manufacturing, and scientific research in universities, it is an indispensable tool in magnetic measurements.

II. Principles of Gauss Meter

  1. Hall Effect PrincipleThe Gauss Meter primarily measures magnetic field intensity through the Hall effect. When a current-carrying conductor (Hall element) is placed in a magnetic field, an electric potential difference (Hall voltage) is generated in the direction perpendicular to both the magnetic field and the current. By measuring the Hall voltage and combining it with the known Hall coefficient, the magnitude of the magnetic induction intensity can be calculated.
  2. Faraday’s Law of Electromagnetic InductionSome Gauss Meters also adopt Faraday’s law of electromagnetic induction as the measurement principle. When a conductor coil is placed in a magnetic field, an induced electromotive force is generated within the coil, which is proportional to the strength of the magnetic field and the number of coil turns. By measuring the induced electromotive force, the magnetic field intensity can also be determined.

III. Usage of Gauss Meter

  • Power On and Calibration: Press the POWER button to turn on the instrument and perform zero calibration as needed to ensure measurement accuracy.
  • Select Range: Choose the appropriate measurement range through buttons or menus to accommodate different magnetic field intensity ranges.
  • Measurement Operation: Place the Hall probe in the magnetic field to be measured, ensuring that the probe direction is perpendicular to the magnetic field direction for the most accurate results.
  • Read Data: The measurement instrument will display the current magnetic induction intensity value, typically in Gauss (Gs) or millitesla (mT).

IV. Common Faults and Repair Methods of Gauss Meter

  1. Common Faults
    • Power Issues: Incorrect power connection or unstable voltage may cause the instrument to malfunction.
    • Sensor Failure: As the core component, damage or aging of the Hall sensor can affect measurement accuracy.
    • Circuit Connection Problems: Loose or damaged connection lines between the probe and the main unit may result in poor signal transmission.
    • Calibration Deviation: Long-term use may lead to changes in instrument calibration, causing inaccurate measurement results.
  2. Repair Methods
    • Check Power: Ensure correct power connection and stable voltage. If necessary, replace the power adapter or battery.
    • Replace Sensor: If the sensor is damaged, contact the manufacturer or professional repair personnel for replacement.
    • Check Circuit Connections: Regularly inspect circuit connections for firmness and repair or replace any loose or damaged connections promptly.
    • Recalibrate: Periodically calibrate the instrument to ensure measurement accuracy. Refer to the instrument manual or contact a professional for guidance on the calibration process.

V. Brands and Specifications of Gauss Meters Repaired by Longi Electromechanical

  1. Lake Shore Cryotronics
    • Model 425 Gaussmeter: High-precision benchtop magnetic field meter
    • Model 455 Gaussmeter: High-performance digital magnetic field meter
    • Model 475 DSP Gaussmeter: High-precision digital signal processing magnetic field meter
    • Model 475-HP: High-field magnetic field meter
  2. AlphaLab Inc.
    • GM2 Gaussmeter: High-precision magnetic field meter
    • VGM Gaussmeter: Vector magnetic field meter
    • TriField® Meter: Multi-function magnetic field meter
  3. FW Bell (now Oersted Technology)
    • Model 5180: Handheld Gaussmeter
    • Model 5180F: Handheld Gaussmeter with filtering function
    • Model 6010: Benchtop Gaussmeter
    • Model 9900: Benchtop digital Gaussmeter
  4. Brockhaus Messtechnik
    • MPG 200 D: Digital magnetic field meter
    • FMG 20: High-precision magnetic field meter
  5. Hirst Magnetic Instruments
    • GM08: Handheld Gaussmeter
    • GM05: Handheld Gaussmeter with USB interface
    • GM04: Portable Gaussmeter
  6. Holmarc
    • GMS-07 Gaussmeter: High-precision magnetic field meter
    • GMS-06 Gaussmeter: Laboratory Gaussmeter
  7. SENIS AG
    • H3A Hall Probe: High-precision 3D magnetic field meter
    • MAGNETO M3D: 3D magnetic field measurement system
  8. Metrolab Technology
    • PT2026: High-precision magnetic field meter
    • THM1176: Handheld 3D magnetic field meter
    • THM1176-HF: High-frequency magnetic field meter
  9. Magnetic Instrumentation
    • Model 1080 Gaussmeter: High-precision digital Gaussmeter
    • Model 1100 Gaussmeter: High-precision handheld Gaussmeter
  10. Walker Scientific
    • MG-3D Gaussmeter: 3D magnetic field meter
    • MG-1 Gaussmeter: High-precision magnetic field meter
  11. Teslameter
    • Model FM302: Handheld Gaussmeter
    • Model FM203: High-precision digital Gaussmeter
  12. KANETEC
    • TM-701: Handheld Gaussmeter
    • TM-801: Digital Gaussmeter
  13. Goudsmit Magnetics
    • GM Gaussmeter: High-precision digital Gaussmeter
    • PM Gaussmeter: Portable Gaussmeter
  14. Oersted Technology (FW Bell)
    • FH 51: Handheld Gaussmeter
    • FH 55: High-precision handheld Gaussmeter
  15. Magneview
    • GV-MA: Handheld Gaussmeter
    • GV-DIGI: Digital Gaussmeter
  16. Hach Polymetron: 9610sc

Longi Electromechanical has nearly 30 years of experience in repairing Gauss Meters and can quickly repair various instruments. Additionally, we buy and sell used Gauss Meters. Please feel free to contact us for more information.

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Liquid Phase Pump: Comprehensive Analysis of Principles, Brand,Usage, Common Faults, and Repair Methods

1. Introduction

The liquid phase pump, a device used to transport liquids from low-pressure to high-pressure areas, finds wide application in chemical analysis, pharmaceuticals, food processing, and more. Its operation principles are rooted in fluid mechanics, utilizing mechanical motion or pressure waves to induce liquid flow and propel it from low to high-pressure zones. Common types, such as centrifugal and positive displacement pumps, are renowned for their stability and durability.

2. Working Principles

The core principle of liquid phase pumps involves applying pressure to liquids through mechanical components (e.g., plungers, pistons, or impellers) to generate flow. Taking positive displacement pumps as an example, they utilize the reciprocating motion of a plunger within a pump cylinder, coupled with sealing rings, to achieve liquid intake and discharge. As the plunger retracts, pressure in the cylinder drops, allowing liquid intake; as it advances, pressure rises, expelling the liquid.

3. Usage Methods

Installation & Preparation:

  • Place the pump on a stable platform, ensuring all connecting pipes are correctly installed and well-sealed.
  • Check that solvent bottles are filled with the required liquid and positioned above or higher than the pump to aid gravity-assisted feeding.

Pre-Start Check:

  • Inspect power connections for stability and the pump for air bubbles or impurities.
  • Pre-flush the system with an appropriate solvent to remove potential contaminants.

Operation Control:

  • Set pump parameters such as flow rate and pressure according to experimental needs.
  • Observe pump operation after starting, ensuring no abnormal noises or leaks.

Routine Maintenance:

  • Regularly replace solvents and inspect/clean critical components like filters and check valves to prevent blockage and wear.

4. Common Faults & Repair Methods

  • Pump Head Air Bubbles:
    • Phenomenon: Unstable system pressure, fluctuating flow rate.
    • Solution: Use an ultrasonic cleaner to degas the mobile phase; open the drain valve and use the PURGE function or a syringe to eliminate bubbles.
  • Check Valve Fault:
    • Phenomenon: Unstable pressure, poor liquid delivery.
    • Solution: Clean the check valve online or with an ultrasonic cleaner. Replace it if the ball is severely worn.
  • Inlet Filter Blockage:
    • Phenomenon: Poor liquid intake, increased pressure.
    • Solution: Remove the inlet filter from the delivery tube, clean it with isopropanol and ultrasonics, or replace it.
  • Plunger Seal Leakage:
    • Phenomenon: Liquid flows out from the rear of the pump head, increasing the cleaning solution bottle level.
    • Solution: Inspect and replace worn plunger seals to ensure proper sealing.
  • Pipeline Filter Blockage:
    • Phenomenon: Increased delivery pressure, decreased flow rate.
    • Solution: Disconnect the pump outlet pipeline, inspect, clean, or replace the filter screen.
  • Column Blockage or Contamination:
    • Phenomenon: Continuously increased delivery pressure, abnormal chromatographic peak shape.
    • Solution: Clean or replace the column according to its manual.
  • Detector Cell Blockage:
    • Phenomenon: Abnormal detection signals, high baseline noise.
    • Solution: Disconnect the detector cell outlet, clean it internally with isopropanol, and disassemble for cleaning if necessary.

5. Summary

As a crucial device in chemical analysis and other fields, the liquid phase pump’s stability and precise control are vital for experimental results. Proper usage and maintenance can effectively prevent common faults and extend pump lifespan. Regular inspections, timely cleaning, and replacement of worn parts ensure optimal pump performance. For different faults, corresponding repair measures should be taken to ensure smooth experimental processes.

6. Brands and Models Repaired by Longi Electromechanical Company

  • Bosch Rexroth
    • A10VSO, A4VSO, A2F, A10VO, A11VO Axial Piston Pumps
    • Controllers: VT-VRPA1-5-1X, VT-MSPA1-1-1X, VT-VSPA2-1-1X
  • Parker Hannifin
    • PV Plus, PVP, PVQ, PAVC, F12 Axial Piston Pumps
    • Controllers: IQAN Series, P1/PD Series, Compax3
  • Eaton
    • Vickers V Series (V10, V20, V80) Vane Pumps, PVM, TA1919, 420 Series Axial Piston Pumps
    • Controllers: Hydro-Line, AxisPro Series, X20
  • Kawasaki
    • K3V/K5V Series (K3V63DT, K3V140DT, K5V200DT), NV Series (NV84, NV111, NV137) Axial Piston Pumps
    • Controllers: K3VLS Control, KAWASAKI KMX
  • Danfoss
    • Series 45 (45L028, 45L038, 45L045), H1 Series (H1P042, H1P053, H1P068) Axial Piston Pumps
    • Controllers: PLUS+1®, DP Series, PVG32, EPC Series, VPC Series
  • Yuken
    • A Series (A16-FR01, A37-FR01, A70-FR01), PVR Series (PVR1T, PVR2T, PVR3T) Axial Piston Pumps
    • Controllers: EPC Series, VPC Series
  • Linde Hydraulics
    • HPR Series (HPR-02, HPR-05), DPVG Series (DPVG-140, DPVG-210) Axial Piston Pumps
    • Controllers: LINC, ESC
  • Sauer-Danfoss
    • Series 90 (90L042, 90L055, 90L075), L/K Series (L042, K042) Axial Piston Pumps
    • Controllers: PLUS+1®, MC Series, DP Series
  • HAWE Hydraulik
    • V30D, V60N Axial Piston Pumps, MPC Variable Piston Pump
    • Controllers: ESX Series, CAN-IO
  • Nachi
    • PVS Series (PVS-0B, PVS-1B, PVS-2B), PZ Series (PZS-3B, PZS-4B) Axial Piston Pumps
    • Controllers: NACHI MCE, NACHI NC
  • Bucher Hydraulics
    • QX Series (QX21, QX31, QX42), AP Series (AP212, AP315) Axial Piston Pumps
    • Controllers: DPS, NFA Series
  • Moog
    • RKP Series (RKP032, RKP045, RKP063) Axial Piston Pumps
    • Controllers: Moog EPU, Moog Axis Control
  • Casappa
    • FVP Series (FVP10, FVP20, FVP30), PLP Series (PLP10, PLP20, PLP30) Axial Piston Pumps
    • Controllers: EPC Series, MC Series
  • Denison Hydraulics (Parker)
    • T6 Series (T6C, T6D, T6E) Vane Pumps, Gold Cup Series (P14, P24, P30) Axial Piston Pumps
    • Controllers: Gold Cup Controller, Parker IQAN Series
  • Rexroth (Bosch Rexroth)
    • A11VO Series (A11VO40, A11VO60, A11VO75) Axial Piston Pumps
    • Controllers: VT-VRPA1-5-1X, VT-MSPA1-1-1X, VT-VSPA2-1-1X

7. Conclusion

Longi Electromechanical Company, with nearly 30 years of experience, specializes in liquid phase pump repairs, ensuring swift restoration of various instruments. We also buy and sell used liquid phase pumps. For inquiries, please contact us.

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Comprehensive Analysis of Coordinate Measuring Machine (CMM): Principles,Usage,Brand,Troubleshooting, and Maintenance Guide

1. Principles

The Coordinate Measuring Machine (CMM) operates on the principle of three-point positioning within a three-dimensional coordinate system. Equipped with a detector capable of moving in three directions along mutually perpendicular guides, it captures coordinate information of points on the surface of the object being measured, either through contact or non-contact methods. By scanning the object’s surface, the detector records the three-dimensional coordinates of various points. These coordinates are then processed by a computer to fit measurement elements such as points, lines, planes, and circles, and to calculate the geometric dimensions, shape, and positional errors of the object.

2. Usage

Preparation:

  • Ensure the CMM is level and free from surrounding interferences.
  • Select appropriate detectors and fixtures; prepare the part to be measured.

Installation and Calibration:

  • Install the part on the CMM and secure it with fixtures, aligning it with the machine’s coordinate axes.
  • Perform probe calibration, selecting suitable probes and styli, and calibrate to achieve the required measurement accuracy.

Establishing Coordinates:

  • Based on the part’s shape and size, establish a workpiece coordinate system. If a workpiece model is available, establish a model coordinate system and fit the two.

Measurement:

  • Choose appropriate measurement methods (e.g., point, line, circle, surface measurements) according to the part’s characteristics.
  • Conduct precise measurements and export the data for analysis, assessing the part’s accuracy and deviations.

3. Common Faults and Repair Methods

  • Large Measurement Errors:
    • Causes: Low surface roughness of the workpiece, contaminated measuring head, unstable measurement environment (temperature, humidity fluctuations).
    • Solutions: Improve surface roughness, clean the measuring head, maintain a stable measurement environment.
  • Unable to Start:
    • Causes: Power supply issues, equipment failure.
    • Solutions: Check power connections and replace if necessary; contact the manufacturer for repairs if equipment failure.
  • Slow Operation:
    • Causes: Equipment aging, software issues.
    • Solutions: Replace with new equipment or update/reinstall software.
  • Inaccurate Measurements:
    • Causes: Improper adjustment of the measuring head, equipment failure.
    • Solutions: Readjust the measuring head for accuracy; contact a repair service if equipment failure.
  • Loss of Coordinate Zero Point:
    • Causes: Computer software issues.
    • Solutions: Reload backup software and restart the machine.
  • Abnormal Coordinate Axis Movement:
    • Causes: Insufficient air bearing pressure, blocked air holes, loose or slipping transmission components.
    • Solutions: Check the air supply system for proper pressure, clean air bearing holes, tighten and adjust transmission components.
  • Probe Automatic Changer Malfunction:
    • Causes: Related power or control component failures.
    • Solutions: Inspect and repair related power or control components.

4. Brands and Models Repaired by Longi Electromechanical

  • Hexagon Metrology:
    • Leitz Reference HP: High-precision CMM.
    • Global S: Universal CMM.
    • Optiv Performance: Multi-sensor CMM.
    • DEA Alpha 2.0: Large bridge-type CMM.
    • TIGO SF: Compact workshop CMM.
  • Zeiss:
    • PRISMO: High-precision CMM.
    • CONTURA: Universal CMM.
    • ACCURA: Configurable CMM.
    • MICURA: Small high-precision CMM.
    • DuraMax: Compact workshop CMM.
  • Mitutoyo:
    • CRYSTA-Apex S: High-precision CMM.
    • CRYSTA-Apex V: Universal CMM.
    • Legex 574: Ultra-high-precision CMM.
    • Strato-Apex 574: Ultra-high-precision CMM.
    • Quick Vision: Multi-sensor measurement system.
  • Nikon Metrology:
    • Altera: Universal CMM.
    • Innova: High-precision CMM.
    • H ALTERA: High-precision bridge-type CMM.
    • LK V: High-performance bridge-type CMM.
    • NEXIV VMZ-R: Video measurement system.
  • Wenzel:
    • LH Series: LH 65, LH 87, LH 1210.
    • XCite: Economical CMM.
    • XO: High-performance CMM.
    • SF 87: High-speed scanning CMM.
  • FARO:
    • FARO Edge: Portable CMM arm.
    • FARO Gage: Compact measuring arm.
    • FARO Quantum: High-precision measuring arm.
    • FARO Vantage: Laser tracker.
  • Brown & Sharpe (Hexagon):
    • GLOBAL Silver: High-performance CMM.
    • ONE: Universal CMM.
    • MICRO-HITE: High-precision measuring instrument.
  • Aberlink:
    • Axiom Too: High-precision CMM.
    • Zenith 3: High-performance CMM.
    • Extol: Economical CMM.
  • Carl Zeiss Industrial Metrology:
    • XENOS: Ultra-high-precision CMM.
    • MMZ G: Large CMM.
    • ACURA: Multi-functional CMM.
  • LK Metrology:
    • Altera M: Universal CMM.
    • Altera S: High-performance CMM.
    • C10: Large bridge-type CMM.
  • Hikrobot:
    • HS Series: HS5030, HS5040, HS5050, HS5060, HS5070.
    • HT Series: HT5030, HT5040, HT5050, HT5060, HT5070.
    • HL Series: HL5030, HL5040, HL5050, HL5060, HL5070.
    • HME Series: High-precision CMM, HME5030, HME5040, HME5050.

Longi Electromechanical has nearly 30 years of experience in repairing CMMs, ensuring quick and efficient repairs. Additionally, we offer the sale and purchase of various used CMMs. Please feel free to contact us for more information.

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Comprehensive Guide to Gas Analyzers: Principles, Usage, Maintenance, Repair, and Brands Serviced

I. Introduction

Gas analyzers, including online gas analyzers and flue gas analyzers, are process instruments used to measure gas compositions. They find wide applications in industries, environmental protection, and safety monitoring. Leveraging gas sensors, these analyzers detect gas types and concentrations with high sensitivity and precision, ensuring safe usage. Common types of gas analyzers include thermal conductivity, electrochemical, and infrared absorption analyzers, each operating on distinct principles.

II. Working Principles

  1. Thermal Conductivity Gas Analyzer:
    • Utilizes differences in thermal conductivity among gases to measure concentration.
    • Semiconductor metal oxide sensing elements adsorb the gas, altering electrical and thermal conductivity.
    • An unbalanced voltage is output through a bridge circuit to detect gas concentration.
  2. Electrochemical Gas Analyzer:
    • Measures gas composition based on ion quantity or current changes resulting from chemical reactions.
    • Types include constant potential electrolysis and galvanic cell.
    • The former applies a specific potential to electrolyze the gas at the electrode surface; the latter measures the electrolytic current of gas diffusing through a membrane into the electrolyte.
  3. Infrared Absorption Analyzer:
    • Measures gas concentration using gas molecules’ absorption characteristics of specific infrared wavelengths.
    • Compares light flux differences between a measurement chamber and a reference chamber, with alternating light path openings via a shutter, to determine gas concentration.

III. Usage

  1. Device Preparation:
    • Ensure correct power connection and startup; check components for normal operation.
  2. Sample Collection:
    • Collect a gas sample under safe conditions, avoiding contamination.
  3. Sample Injection & Analysis:
    • Open the sample inlet, inject the gas sample, select appropriate measurement modes and parameter settings, and initiate the test.
  4. Result Recording:
    • Upon analysis completion, the instrument automatically displays results; record, print, or save as needed.

IV. Common Faults & Repair Methods

  1. Display Stuck:
    • Causes: Poor connector contact, measurement bridge open or short circuit.
    • Repair: Check and address poor contact; replace connectors if necessary; repair bridge issues.
  2. Heating Indicator Not Lit:
    • Causes: Heating plate open circuit, damaged heating indicator, open platinum resistor, or loose wiring.
    • Repair: Inspect the heating plate and its connections; replace damaged parts; tighten wiring screws.
  3. Unstable Display:
    • Causes: Unstable bridge current, abnormal power voltage, or poor wiring contact.
    • Repair: Stabilize power voltage, replace damaged components; address poor contact.
  4. Digital Display Not Showing:
    • Causes: Faulty power switch, blown fuse, or microcomputer system failure.
    • Repair: Replace the power switch or fuse; tighten wiring screws; for microcomputer issues, send for factory repair.
  5. Low Concentration Not Detected:
    • Causes: Pump inoperable, filter clogged, zero point not calibrated, or gas concentration below minimum detection limit.
    • Repair: Check pump and filter status; perform zero calibration; confirm gas concentration.
  6. Large Value Fluctuations:
    • Causes: Presence of measured gas, significant temperature/humidity variations, or sensor impact.
    • Repair: Confirm site conditions; perform zero or target point calibration; if impacted, check stability after power-on aging.

V. Maintenance

  • Regular inspections: Ensure proper gas flow, replace filter paper, check for gas system leaks, clean sampling probes and measurement chambers.
  • Calibration: Regularly calibrate with standard gases to ensure accuracy.
  • Operator Training: Ensure proficiency in correct usage, emphasize safe operations, and prevent toxic or combustible gas leaks.

VI. Brands & Models Repaired by Longi Electromechanical Company

  1. ABB:
    • EL3020: Laser Spectrum Gas Analyzer
    • EasyLine EL3000: Multi-component Gas Analyzer
    • AO2000 Series: AO2020, AO2040
    • EL3060: Gas Analyzer
    • EL6010: Gas Analyzer
    • LGR-ICOS: Laser Gas Analyzer
  2. Siemens:
    • ULTRAMAT 23: Multi-component Gas Analyzer
    • FIDAMAT 6: Hydrogen Flame Ionization Detector
    • ULTRAMAT/OXYMAT 6: Multi-component Gas Analyzer
    • SITRANS SL: Laser Gas Analyzer
  3. Emerson (Rosemount):
    • Rosemount CT5400: Laser Gas Analyzer
    • Rosemount 700XA: Natural Gas Analyzer
    • Rosemount 951C: Oxygen Analyzer
  4. HORIBA:
    • PG-300: Portable Multi-component Gas Analyzer
    • VA-5000 Series: VA-5000, VA-5000M
    • AP-370 Series: AP-370, AP-370M
  5. Thermo Fisher Scientific:
    • i-Series: 48i (CO Analyzer), 42i (NOx Analyzer), 43i (SO2 Analyzer), 450i (CO2 Analyzer)
    • T-Series: T100 (SO2 Analyzer), T200 (NOx Analyzer), T300 (CO Analyzer)
  6. Yokogawa:
    • TDLS8000: Laser Gas Analyzer
    • Zirconia Oxygen Analyzer ZR22G/ZR802G
    • GC8000: Gas Chromatograph
  7. Sick:
    • GMS800: Gas Analyzer
    • MAIHAK SIDOR: Multi-component Gas Analyzer
    • FIDOR: Hydrogen Flame Ionization Detector
  8. Servomex:
    • SERVOPRO Chroma: Multi-component Gas Analyzer
    • SERVOPRO 4900: Multi-component Gas Analyzer
    • SERVOTOUGH Oxy: Oxygen Analyzer
  9. Teledyne Analytical Instruments:
    • Series 2000: 2000A (Oxygen Analyzer), 2000B (Carbon Dioxide Analyzer)
    • Series 3000: 3000TB (Oxygen Analyzer), 3000ZA (Sulfur Dioxide Analyzer)
  10. Nova Analytical Systems:
    • Nova 337 Series: Multi-component Gas Analyzer
    • Nova 380 Series: Portable Gas Analyzer
    • Nova 410 Series: Oxygen Analyzer
  11. Linde Gas and Gases Division:
    • LASER ONE: Laser Gas Analyzer
    • GAS ALARM: Multi-component Gas Analyzer
  12. Fuji Electric:
    • ZKJ Series: ZKJ-B (Oxygen Analyzer), ZKJ-D (Oxygen Analyzer)
    • ZRE Series: Multi-component Gas Analyzer
  13. MKS Instruments:
    • FTIR Series: MultiGas 2030
    • Granville-Phillips Series: Series 835 (Oxygen Analyzer), Series 937 (Carbon Dioxide Analyzer)
  14. California Analytical Instruments:
    • 600 Series: 600 HFID (Hydrogen Flame Ionization Detector), 600 NDIR (Non-Dispersive Infrared Analyzer)
    • 700 Series: 700 NDIR, 700 HFID
  15. AMETEK:
    • Process Instruments: Model 5000, Model 5100, Model 5200, Model 930, Model 920, Model 950, WDG-V, WDG-IV
    • MOCON (Baseline): Baseline 9100, Baseline 9200, Baseline 8800, Series 9000, Series 8900
    • Process Instruments (Thermox): Thermox WDG-IV Series, Thermox CEM/O2, Thermox CG1100
    • Power Instruments: Model 212, Model 221, Model 241CE
    • Land: Lancom 4, FGA Series, Carbon Monoxide Monitor
    • Orbisphere (Hach): Orbisphere 3650, Orbisphere 6110, Orbisphere 3100

Longi Electromechanical Company specializes in the repair of gas analyzers, with nearly 30 years of experience. We swiftly repair various instruments and also buy and sell used analyzers. Contact us for more information.

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 Comprehensive Guide to Fluorescence Analyzer: Usage, Faults, and Repair Methods

I. Overview and Basic Principles of Fluorescence Analyzer

A fluorescence analyzer is a precision instrument that utilizes the fluorescence phenomenon of substances under specific excitation conditions to analyze sample composition and properties. When chemical substances in a sample are irradiated by light of a specific wavelength, they absorb energy, transition to a high-energy state, and subsequently return to the ground state while releasing photons, producing fluorescence. By measuring the intensity and characteristic spectrum of fluorescence, the fluorescence analyzer can precisely analyze the composition and structure of the sample.

II. Usage Method of Fluorescence Analyzer

Startup Preparation:

  • Ensure that external equipment such as air compressors, water chillers, and gas supply systems are operating normally.
  • Turn on the fluorescence analyzer host and computer, and run the analysis software.

Sample Preparation:

  • Prepare samples according to experimental requirements, ensuring sample purity and compatibility with reagents.
  • Place the sample in an appropriate container for testing.

Instrument Calibration:

  • Perform zero-point calibration to ensure accurate measurements.
  • Adjust instrument parameters as needed, such as excitation wavelength and emission wavelength.

Sample Testing:

  • Place the sample in the sample chamber of the fluorescence analyzer.
  • Initiate the testing program and wait for the instrument to complete the measurement of the fluorescence spectrum.
  • Record and analyze the fluorescence spectrum data to draw conclusions about the sample’s composition and properties.

Shutdown and Cleaning:

  • After testing, turn off the fluorescence analyzer host and computer.
  • Clean the sample chamber and the exterior of the instrument to ensure it is in good condition.

III. Types of Faults and Repair Methods for Fluorescence Analyzer

Unstable Fluorescence Intensity:

  • Causes: Aging of the lamp filament, dirty electrodes, environmental temperature fluctuations.
  • Repair Methods: Replace the lamp filament, clean the electrodes, stabilize the environmental temperature.

Decreased Sensitivity:

  • Causes: Expired reagents, incompatibility between sample and reagent, contamination of the optical path system.
  • Repair Methods: Replace with fresh reagents, test using the same type of sample, clean the optical path system.

Instrument Failure to Turn On:

  • Causes: Power supply failure, connection issues between the computer and host, software system errors.
  • Repair Methods: Check the power supply, reconnect the computer and host, restart the software system or contact the manufacturer for repairs.

Low Water Flow or Water Circuit Blockage:

  • Causes: Water filter blockage or impurities in the water circuit system.
  • Repair Methods: Clean or replace the water filter, inspect and clear impurities in the water circuit system.

IV. Repair Precautions

  • Before performing any repair operations, be sure to turn off the instrument’s power supply to ensure safety.
  • Use professional tools for disassembly and installation to avoid damaging instrument components.
  • Follow the manufacturer’s repair manuals and guides to ensure correct repair procedures.
  • For complex faults or issues that cannot be resolved independently, promptly contact professional repair personnel from Rongji Electromechanical Company.

V. Conclusion

As a high-precision analytical instrument, the fluorescence analyzer plays a crucial role in scientific research and production fields. Through this introduction, we have gained an understanding of the basic principles, usage methods, common fault types, and repair methods of the fluorescence analyzer. We hope that this information will help you better use and maintain the fluorescence analyzer, thereby improving research and production efficiency.

VI. Brands and Models of Fluorescence Analyzers Repaired by Rongji Electromechanical Company

  1. Thermo Fisher Scientific
    • Fluoroskan FL: Microplate Fluorometer
    • NanoDrop 3300: Micro-Volume Fluorospectrometer
    • Lumina Fluorescence Spectrometer: General Fluorescence Spectrometer
  2. Agilent Technologies
    • Cary Eclipse: Fluorescence Spectrometer
    • Agilent 4300 Handheld FTIR: Handheld Fluorescence Analyzer
  3. PerkinElmer
    • LS 55: Fluorescence Spectrometer
    • EnVision: Multimode Microplate Reader
    • Victor Nivo: Multimode Microplate Reader
  4. Horiba Scientific
    • FluoroMax-4: Fluorescence Spectrometer
    • FluoroMax Plus: High-Performance Fluorescence Spectrometer
    • Aqualog: Water Quality Analysis Fluorescence Spectrometer
  5. Shimadzu
    • RF-6000: High-Sensitivity Fluorescence Spectrometer
    • RF-5301PC: Fluorescence Spectrometer
  6. Edinburgh Instruments
    • FLS1000: Fluorescence Spectrometer
    • FS5: Fluorescence Spectrometer
    • Mini-tau: Fluorescence Lifetime System
  7. Hitachi
    • F-7000: Fluorescence Spectrometer
    • F-7100: High-Performance Fluorescence Spectrometer
    • F-2700: Compact Fluorescence Spectrometer
  8. Zeiss
    • LSM 880: Laser Scanning Confocal Microscope with Fluorescence Analysis Function
    • Axio Imager: Fluorescence Microscope
  9. Bruker
    • FOCUS-G: Portable Fluorescence Spectrometer
    • CRYO-G: Fluorescence Lifetime Microscope
  10. Tecan
    • Spark: Multimode Microplate Reader with Fluorescence Analysis Function
    • Infinite 200 PRO: Multimode Microplate Reader
  11. BioTek (Agilent)
    • Cytation 5: Multimode Microplate Reader and Imaging System
    • Synergy H1: Multimode Microplate Reader
  12. Molecular Devices
    • SpectraMax i3x: Multimode Microplate Reader
    • FlexStation 3: Fluorescence Analysis System
  13. Photon Technology International (PTI)
    • QuantaMaster 8000: Fluorescence Spectrometer
    • TimeMaster: Fluorescence Lifetime System
  14. Jobin Yvon (Horiba)
    • FluoroLog: Fluorescence Spectrometer
    • FluoroCube: Fluorescence Lifetime System

Rongji Electromechanical Company has nearly 30 years of experience in repairing fluorescence analyzers (fluorospectrometers, atomic fluorescence spectrometers) and can quickly repair various types of instruments. Additionally, we recycle and sell various used fluorescence analyzers. Please feel free to consult us.

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Comprehensive Guide to Fluorescence Analyzer: Operating Procedures, Faults, and Repair Methods

I. Overview and Basic Principles of Fluorescence Analyzer

The fluorescence analyzer is a precise instrument that utilizes the fluorescence phenomenon of substances under specific excitation conditions to analyze sample composition and properties. When chemicals in a sample are irradiated by light of a specific wavelength, they absorb energy, transition to a higher energy state, and subsequently return to the ground state while releasing photons, producing fluorescence. By measuring the intensity and characteristic spectrum of fluorescence, the fluorescence analyzer can accurately analyze the composition and structure of the sample.

II. Operating Procedures for Fluorescence Analyzer

Startup Preparation:

  • Ensure the normal operation of external equipment such as air compressor, water cooler, and gas supply system.
  • Turn on the fluorescence analyzer host and computer, and run the analysis software.

Sample Preparation:

  • Prepare samples according to experimental requirements, ensuring sample purity and compatibility with reagents.
  • Place the sample in an appropriate container for testing.

Instrument Calibration:

  • Perform zero-point calibration to ensure accurate measurements.
  • Adjust instrument parameters as needed, such as excitation wavelength and emission wavelength.

Sample Testing:

  • Place the sample in the sample chamber of the fluorescence analyzer.
  • Initiate the testing program and wait for the instrument to complete the measurement of the fluorescence spectrum.
  • Record and analyze the fluorescence spectrum data to draw conclusions about the sample’s composition and properties.

Shutdown and Cleaning:

  • After testing, turn off the fluorescence analyzer host and computer.
  • Clean the sample chamber and the exterior of the instrument to maintain its good condition.

III. Types of Faults and Repair Methods for Fluorescence Analyzer

Unstable Fluorescence Intensity:

  • Causes: Aging of lamp filament, dirty electrodes, fluctuations in ambient temperature.
  • Repair Methods: Replace the lamp filament, clean the electrodes, stabilize the ambient temperature.

Decreased Sensitivity:

  • Causes: Expired reagents, incompatibility between sample and reagent, contamination of the optical path system.
  • Repair Methods: Replace with fresh reagents, test using the same type of sample, clean the optical path system.

Instrument Failure to Turn On:

  • Causes: Power supply failure, connection issues between computer and host, software system errors.
  • Repair Methods: Check the power supply, reconnect the computer and host, restart the software system or contact the manufacturer for repair.

Low Water Flow or Water Circuit Blockage:

  • Causes: Blocked water filter or impurities in the water circuit system.
  • Repair Methods: Clean or replace the water filter, inspect and clear impurities in the water circuit system.

IV. Repair Precautions

  • Before performing any repair operations, be sure to turn off the instrument’s power supply to ensure safety.
  • Use professional tools for disassembly and installation to avoid damaging instrument components.
  • Follow the repair manuals and guides provided by the manufacturer to ensure correct repair procedures.
  • For complex faults or issues that cannot be resolved independently, promptly contact professional repair personnel from Rongji Electromechanical Company.

V. Conclusion

As a high-precision analytical instrument, the fluorescence analyzer plays a crucial role in scientific research and production fields. Through this introduction, we have gained an understanding of the basic principles, usage methods, common fault types, and repair methods of the fluorescence analyzer. We hope that this information will help you better use and maintain the fluorescence analyzer, thereby improving research and production efficiency.

VI. Brands and Models of Fluorescence Analyzers Repaired by Rongji Electromechanical Company

  1. Thermo Fisher Scientific
    • Fluoroskan FL: Microplate Fluorometer
    • NanoDrop 3300: Micro-Volume Fluorometer
    • Lumina Fluorescence Spectrometer: General Fluorescence Spectrometer
  2. Agilent Technologies
    • Cary Eclipse: Fluorescence Spectrometer
    • Agilent 4300 Handheld FTIR: Handheld Fluorescence Analyzer
  3. PerkinElmer
    • LS 55: Fluorescence Spectrometer
    • EnVision: Multimode Microplate Reader
    • Victor Nivo: Multimode Microplate Reader
  4. Horiba Scientific
    • FluoroMax-4: Fluorescence Spectrometer
    • FluoroMax Plus: High-Performance Fluorescence Spectrometer
    • Aqualog: Water Quality Analysis Fluorescence Spectrometer
  5. Shimadzu
    • RF-6000: High-Sensitivity Fluorescence Spectrometer
    • RF-5301PC: Fluorescence Spectrometer
  6. Edinburgh Instruments
    • FLS1000: Fluorescence Spectrometer
    • FS5: Fluorescence Spectrometer
    • Mini-tau: Fluorescence Lifetime System
  7. Hitachi
    • F-7000: Fluorescence Spectrometer
    • F-7100: High-Performance Fluorescence Spectrometer
    • F-2700: Compact Fluorescence Spectrometer
  8. Zeiss
    • LSM 880: Laser Scanning Confocal Microscope with Fluorescence Analysis Function
    • Axio Imager: Fluorescence Microscope
  9. Bruker
    • FOCUS-G: Portable Fluorescence Spectrometer
    • CRYO-G: Fluorescence Lifetime Microscope
  10. Tecan
    • Spark: Multimode Microplate Reader with Fluorescence Analysis Function
    • Infinite 200 PRO: Multimode Microplate Reader
  11. BioTek (Agilent)
    • Cytation 5: Multimode Microplate Reader and Imaging System
    • Synergy H1: Multimode Microplate Reader
  12. Molecular Devices
    • SpectraMax i3x: Multimode Microplate Reader
    • FlexStation 3: Fluorescence Analysis System
  13. Photon Technology International (PTI)
    • QuantaMaster 8000: Fluorescence Spectrometer
    • TimeMaster: Fluorescence Lifetime System
  14. Jobin Yvon (Horiba)
    • FluoroLog: Fluorescence Spectrometer
    • FluoroCube: Fluorescence Lifetime System

Rongji Electromechanical Company has nearly 30 years of experience in repairing fluorescence analyzers (fluorescence spectrometers, atomic fluorescence spectrometers) and can quickly repair various types of instruments. Additionally, we recycle and sell various used fluorescence analyzers. Welcome to consult.