Tag: Fault Repair

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Comprehensive Analysis of Headspace Sampler: Principles,Brand, Usage Methods, and Troubleshooting Guide

I. Overview of Headspace Sampler

The headspace sampler is an efficient and convenient sample pretreatment method in gas chromatography. Its principle involves placing the sample to be tested in a sealed container, heating it to volatilize the volatile components, achieving equilibrium in the gas-liquid (or gas-solid) phases, and then directly extracting the top gas for chromatographic analysis to detect the composition and content of volatile components in the sample. This technique simplifies the sample pretreatment process, avoids the interference of organic solvents, and reduces contamination of the chromatographic column and injection port.

II. Principles of Headspace Sampler

The working principles of the headspace sampler are mainly divided into two types: solution headspace and solid headspace.

  • Solution Headspace: The sample is dissolved in an appropriate solvent and placed in a headspace vial, which is then heated for a certain period to allow the residual solvent to reach equilibrium in the gas-liquid phases. Subsequently, a quantitative amount of gas is sampled for measurement.
  • Solid Headspace: The solid sample is directly placed in the headspace vial and heated for a certain period to allow the volatile components to reach equilibrium in the gas-solid phases. Afterwards, a quantitative amount of gas is sampled for measurement.

III. Usage Methods

Preparation Stage:

  1. Accurately transfer the sample to the headspace vial and seal it.
  2. Place the headspace vial in the heating oven and allow it to equilibrate for the preset time.

Parameter Setting:

  1. Set parameters such as heating temperature of the headspace vial, temperature of the quantitative tube, and temperature of the transfer line as needed.
  2. Ensure that the headspace sampler is correctly connected to the gas chromatograph, and set the appropriate carrier gas flow rate and split ratio.

Sampling Operation:

  1. Use the pressure method or equilibrium method to introduce the headspace gas into the gas chromatograph.
  2. After starting the sampling, wait for the sample peak to finish, press the cleaning button to clean, and then proceed with the next sample.

Data Analysis:

  1. Analyze the data obtained from the gas chromatograph to calculate the composition and content of volatile components in the sample.

IV. Common Faults and Repair Methods

Unable to Sample Normally:

  • Fault Causes: Insufficient pressure, valve failure, sealing issues, clogged sampling needle.
  • Repair Methods: Check the gas source pressure, clean or replace the valve, replace sealing components, clean the sampling needle, and ensure it is dry before reinstallation.

Gas Leakage:

  • Fault Causes: Loose connections or aged sealing components.
  • Repair Methods: Check the tightness of connections, replace aged or damaged sealing components, and apply sealing glue if necessary to enhance sealing.

Inaccurate Sampling Volume:

  • Fault Causes: Clogged sampling needle, stuck or leaky valve.
  • Repair Methods: Regularly clean the sampling needle, calibrate the sampling volume, and inspect and address valve faults.

Slow Sampling Speed:

  • Fault Causes: Insufficient gas source pressure, clogged sampling needle, stuck valve.
  • Repair Methods: Check and repair the gas source pressure issue, clean the sampling needle, and address the stuck valve problem.

Other Mechanical Faults:

  • For mechanical faults such as rusted lifting rods, follow the equipment manual or disassembly videos provided by technical support to disassemble, remove rust, lubricate, and reinstall.

V. Conclusion

As an important tool in gas chromatographic analysis, the headspace sampler is widely used in various fields due to its efficiency and convenience. Correctly understanding and operating the headspace sampler, as well as promptly addressing common faults, are crucial for ensuring the accuracy and efficiency of experimental results. This article summarizes the basic principles, usage methods, and common fault repair methods of the headspace sampler, aiming to provide comprehensive reference and guidance for users.

VI. Brands and Models of Headspace Samplers Repaired by Longi Electromechanical Company

  1. Agilent Technologies
    • 7697A: Headspace Sampler
    • 7650A: Automatic Headspace Sampler
    • 7694E: Headspace Sampler
  2. PerkinElmer
    • TurboMatrix Series: TurboMatrix 40, TurboMatrix 110, TurboMatrix 16, TurboMatrix 650 ATD, TurboMatrix 350 ATD
  3. Thermo Fisher Scientific
    • TriPlus Series: TriPlus 300 HS, TriPlus 500 HS, TriPlus 100 LS
  4. Shimadzu
    • HS-20 Series: HS-20, HS-10
  5. GERSTEL
    • MultiPurpose Sampler (MPS): Integrates headspace, solid-phase microextraction (SPME), and other multifunctional sampling
    • Dual Headspace Sampler: Efficient multi-sample sampling
  6. CTC Analytics (PAL System)
    • PAL RSI: Robotic Sample Injector with headspace option
    • PAL RTC: Robotic Tool Change system with headspace option
  7. Teledyne Tekmar
    • HT3: Headspace Autosampler
    • Versa: Automated Headspace Vial Sampler
  8. LECO Corporation
    • PEGASUS HT-C: Headspace Sampler
    • HTS: High Throughput Sampler
  9. Markes International
    • CIA Advantage: High-capacity headspace autosampler
  10. EST Analytical
    • Evolution: Automated Headspace Sampler
  11. OI Analytical (Xylem)
    • 4560: Purge-and-Trap Sample Concentrator with headspace option
  12. Alpha MOS
    • HS100: Headspace Autosampler
  13. Dani Instruments
    • Master DHS: Dynamic Headspace Sampler
    • Master SHS: Static Headspace Sampler
  14. Entech Instruments
    • 7100A: Preconcentrator with headspace option
  15. Horizon Technology
    • SmartPrep: Automated Extraction System with headspace option

Longi Electromechanical Company has nearly 30 years of experience in repairing headspace samplers and can quickly repair various instruments. Additionally, the company recycles and sells various headspace samplers. Welcome to consult.

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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.

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 Comprehensive Guide to Water Quality Analyzers: Principles, Usage, Faults, and Brands

Introduction

The water quality analyzer, also known as the water quality detector, is a precision instrument specifically designed to detect and analyze various physical, chemical, and biological parameters in water bodies. It finds wide application in drinking water monitoring, wastewater treatment, environmental protection, and industrial process control, serving as a crucial tool to ensure water quality safety and enhance environmental protection standards.

1. Functional Principles

The functional principles of water quality analyzers are primarily based on various physical, chemical, and biological sensing technologies, assessing water quality by measuring specific parameters in water bodies. Its working principles may include:

  • Ion-Selective Electrode Measurement: Utilizes electrodes to selectively respond to specific ions in water, determining ion concentrations through the measurement of potential differences or currents generated by the electrodes. Commonly used for measuring pH, fluoride, sodium, potassium, calcium, and magnesium ion concentrations.
  • Photoelectric Technology: Employs photoelectric sensors to measure optical properties in water, such as turbidity and chroma. Inferences about certain physical or chemical properties of water can be made based on the intensity or changes in light signals received by the photoelectric sensors.
  • Computer Analysis Technology: Combines photoelectric technology with other sensing technologies, utilizing computers to process and analyze measurement data, deriving various parameters of water quality. This method enables rapid and accurate water quality monitoring and analysis.

2. Usage Method

The usage method of a water quality analyzer typically includes the following steps:

  1. Prepare Sample: According to experimental needs, prepare the water sample to be tested, ensuring the purity and quality of the sample.
  2. Establish Experimental System: Set appropriate experimental conditions and parameters based on experimental requirements.
  3. Instrument Adjustment: Adjust and optimize the water quality analyzer to ensure it is in optimal working condition.
  4. Add Sample: Introduce the water sample to be tested into the instrument, ensuring good contact between the sample and the instrument.
  5. Conduct Experiment: Start the instrument, initiate the experimental process, record experimental data, and observe results.
  6. Data Analysis: Process and analyze experimental data to derive various parameters and assessment results of water quality.
  7. Clean Equipment: Thoroughly clean the water quality analyzer after the experiment to avoid cross-contamination.

3. Common Faults and Repair Methods

Water quality analyzers may encounter certain faults during usage. Below are some common faults and their repair methods:

  • No Display upon Startup:
    • Fault Causes: Power not connected, switch issue, LCD or wiring issue.
    • Repair Methods: Check if the power cord is connected; replace the switch; confirm the normality of the LCD and wiring, and replace if necessary.
  • Poor Data Repeatability:
    • Fault Causes: Insufficient instrument warm-up time, unstable external voltage, poor instrument grounding.
    • Repair Methods: Allow the instrument to warm up sufficiently after startup (e.g., 30 minutes); improve the instrument’s working environment to ensure stable external voltage; check and improve the instrument’s grounding state.
  • Measurement Values Too High or Too Low:
    • Fault Causes: Contamination of the measurement system, electrical drift.
    • Repair Methods: Flush the instrument’s measurement flow path with high-purity water to remove contamination; perform curve calibration on the instrument to eliminate electrical drift.
  • Blocked Drainage:
    • Fault Causes: Blocked drainage connector, folded drainage tube, solenoid valve issue.
    • Repair Methods: Flush the drainage connector and measurement flow path with high-purity water; check for folds in the drainage tube and adjust; check or replace the solenoid valve.
  • No Sample Intake:
    • Fault Causes: Insufficient water sample pressure, faulty or blocked channel valve, filter blockage.
    • Repair Methods: Adjust the sample intake pressure; replace the solenoid or channel valve; replace the filter to clear the blockage.
  • Standard Solution or Reagent Not Added:
    • Fault Causes: Lack of standard solution or reagent, air resistance in the tubing, faulty standard solution or reagent valve.
    • Repair Methods: Add standard solution and reagent; vent the tubing to eliminate air resistance; replace the standard solution or reagent valve.

Note: The above repair methods are for reference only. Specific repair operations should be carried out according to the instrument manual and actual situation. During repairs, ensure safe operation to avoid damaging the instrument or causing personal injury. If faults cannot be resolved independently, it is recommended to contact professional repair personnel from Rongji Electromechanical for assistance.

4. Brands and Models of Water Quality Analyzers Repaired by Longi Electromechanical

  1. Hach
    • DR3900: Benchtop Spectrophotometer for multi-parameter water quality analysis
    • DR6000: High-precision Benchtop UV-Vis Spectrophotometer
    • SL1000: Portable Multi-parameter Analyzer
    • HQD Series: Professional portable and benchtop multi-parameter analyzers, e.g., HQ40D, HQ30D
    • MS5: Portable Water Quality Multi-parameter Probe
  2. YSI (Xylem Inc.)
    • ProDSS: Multi-parameter Water Quality Analyzer for field and laboratory use
    • EXO2: Multi-parameter Water Quality Probe System
    • ProQuatro: Portable Multi-parameter Water Quality Analyzer
    • Pro2030: Dissolved Oxygen and Temperature Analyzer
    • ProPlus: Multi-parameter Portable Analyzer
  3. Horiba
    • U-50 Series: Multi-parameter Water Quality Analyzers, U-52, U-53, U-54, U-55, U-52G
    • LAQUA Series: Laboratory Multi-parameter Analyzers, LAQUAact, LAQUAtwin
  4. Thermo Fisher Scientific
    • Orion Versa Star Series: High-end Multi-parameter Analyzers, Versa Star Pro
    • Orion Star A Series: Portable and Benchtop Water Quality Analyzers, Star A329
    • Orion AquaMate 8000: Spectrophotometer
  5. Xylem Analytics
    • WTW MultiLine Series: Multi-parameter Water Quality Analyzers, MultiLine 3510 IDS, MultiLine 3420 IDS
    • WTW InoLab Series: Laboratory Multi-parameter Analyzers, InoLab Multi 9310 IDS, InoLab Multi 9620 IDS
  6. Hanna Instruments
    • HI9829: Portable Multi-parameter Water Quality Analyzer
    • HI83399: Multi-parameter Spectrophotometer
    • HI5522: Laboratory Multi-parameter pH/ISE/EC/DO Meter
  7. Lovibond
    • SpectroDirect: Spectrophotometer
    • MD 600: Portable Multi-parameter Water Quality Analyzer
    • AquaLX: Water Quality Spectrophotometer
  8. Mettler Toledo
    • SevenExcellence Series: High-end Multi-parameter Water Quality Analyzers, S475, S470, S470-Kit
    • Seven2Go Series: Portable Multi-parameter Analyzers, S2, S3
  9. LaMotte
    • Smart 3 Colorimeter: Portable Multi-parameter Water Quality Analyzer
    • TRACER Series: Multi-parameter Probes, TRACER Pocket Tester
    • 2020we/Turbiquant Series: Portable Turbidity Meters
  10. Palintest
    • Photometer 7500: Benchtop Multi-parameter Analyzer
    • AquaPal Series: Portable Water Quality Analyzers, AquaPal Photometer, AquaPal Bluetooth
    • Macro 900 Series: Portable Multi-parameter Water Quality Analyzers

Longi Electromechanical has nearly 30 years of experience in repairing water quality analyzers (water quality detectors, online water quality analyzers), enabling quick and effective repairs for various instruments. Additionally, we recycle and sell various used water quality analyzers. Welcome to consult.

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Ozone Analyzer: Composition, Working Principle, Faults, and Repairs

I. Introduction to Ozone Analyzer

  1. Basic Composition
    • The ozone analyzer primarily consists of a low-pressure UV lamp, optical wave filter, incident UV light reflector, ozone absorption cell, sample photoelectric sensor, sampling photoelectric sensor, output display, and circuit components. These components work in unison to achieve precise measurement of ozone concentration.
  2. Working Principle
    • The working principle of the ozone analyzer is based on the absorption characteristic of ozone to specific wavelength UV light. The UV absorption method, utilizing ozone’s characteristic absorption of 254nm wavelength UV light and adhering to the Beer-Lambert Law, is the most prevalent. By measuring the intensity change of UV light before and after passing through the ozone gas, the ozone concentration can be calculated.
  3. Classification
    • According to measurement range and application, ozone analyzers can be divided into high-concentration and low-concentration types. High-concentration analyzers are suitable for ozone generator manufacturers to test product output and for health and epidemic prevention departments to monitor ozone sterilization products. Low-concentration analyzers are ideal for monitoring environmental atmospheric concentrations and detecting ozone leakage from sources such as negative ion generators, photocopiers, and ozone sterilizers.
  4. Characteristics
    • High Precision: The ozone analyzer offers high measurement accuracy, reflecting precise changes in air ozone concentration.
    • Compact and Portable: Modern designs are compact and portable, facilitating on-site monitoring and mobile use.
    • Low Power Consumption: Some models feature low power consumption, enabling long-term use without frequent battery or power source replacement.
    • Data Recording and Transmission: Advanced models incorporate data loggers and real-time clocks, enabling data recording and transmission for subsequent analysis and processing.
  5. Application Areas
    • Ozone analyzers are widely used in ozone production workshops, petroleum, chemical, textile, paper, pharmaceutical, and flavor & fragrance industries, water treatment, and food & medicine sterilization workshops. They are also ideal for remote on-site monitoring, urban network monitoring, scientific experiments, research studies, and process monitoring.
  6. Maintenance and Upkeep
    • Regular maintenance and upkeep, including cleaning the instrument surface, checking sensor and circuit component status, and calibrating the instrument, are essential for ensuring accuracy and stability. Care should be taken to avoid environmental interference and instrument damage.
  7. Precautions
    • Ensure the instrument operates in a stable environment, avoiding high temperatures, humidity, and strong magnetic fields.
    • Regularly calibrate and maintain the instrument to ensure measurement accuracy and reliability.
    • Observe safety precautions during measurements, avoiding direct contact with high-concentration ozone gas to prevent harm.

II. Common Faults and Repair Methods for Ozone Analyzers

  1. Inaccurate Display or Data Loss
    • Faults: Sensor aging, environmental interference, insufficient storage space, or faulty storage media.
    • Repair Methods: Regularly inspect and replace sensors, ensure suitable operating conditions, timely export data and clear storage, and replace damaged storage media.
  2. Alarm Function Failure
    • Faults: Incorrect alarm settings, damaged or loose alarms.
    • Repair Methods: Reset alarm thresholds and inspect, repair, or replace alarms.
  3. Unstable Values
    • Faults: Unstable ozone concentration values, continuously rising display on the LCD screen.
    • Repair Methods: Ensure good insulation between the transmitter and the box, and check solid-state output signals and relays.
  4. No Display or Abnormal Display
    • Faults: No ozone concentration display after power-on, only upper or lower limits shown.
    • Repair Methods: Check for 24V power supply to the ozone transmitter, ensure secure connections between sensors and the mainboard, and adjust transmitter zero point.
  5. Slow Instrument Response
    • Faults: Slow response time, failing to meet requirements.
    • Repair Methods: Set a reasonable analyzer averaging time, clear condensate from pipelines, and set a suitable indoor air conditioning temperature. Clean the optical cell, reinstall, and run for a period to check for leaks.
  6. Other Parameter Inaccuracies
    • Faults: Simultaneous inaccuracies in pressure, temperature, flow, and large concentration display fluctuations.
    • Repair Methods: Replace the CPU or driver board to address A/D or multi-switch damage. Inspect and replace the mainboard, driver board, or related components to ensure normal control signal output.

III. Ozone Analyzer Brands and Models Repaired by Longi Ectromechanical Company

  1. 2B Technologies
    • Model 106-L: 0-100ppm
    • Model 106-M: 0-1000ppm
    • Model 106-H: 0-20wt%
    • The 106 series portable ozone analyzer uses UV absorption for on-site rapid measurements with high sensitivity and precision.
  2. Thermo Fisher Scientific
    • Model 49I: Utilizes UV absorption (UV photometry) to measure ozone concentration, widely used in environmental air quality monitoring.
  3. Teledyne API
    • Model T400: Based on UV absorption technology, provides continuous, real-time ozone concentration data, suitable for long-term monitoring.
  4. Horiba
    • Model APOA-370: Uses UV absorption technology with high sensitivity and stability, suitable for environmental monitoring and research applications.
  5. Eco Physics
    • Model nCLD 822 Mh: Utilizes chemiluminescence detection technology for precise measurements at very low concentrations, suitable for laboratories and research institutions.
  6. Aeroqual
    • Series 500: A portable device using electrochemical sensor technology, suitable for indoor and outdoor air quality monitoring.
  7. Lumasense Technologies
    • Model INNOVA 1412i: A multi-gas detector capable of measuring multiple gases, including ozone, suitable for various industrial and scientific applications.

Conclusion
The stable operation and data accuracy of ozone analyzers rely on routine maintenance and management. Understanding common faults and repair methods is crucial for reducing instrument failure rates, improving operational efficiency, and ensuring monitoring data reliability. Regular inspections, maintenance, and calibration according to manufacturer recommendations are advised.

Longi Ectromechanical Company has nearly 30 years of experience in repairing ozone analyzers, enabling rapid repairs for various instruments. Additionally, we recycle and sell used ozone analyzers. For more information, please contact us.