GA-370

Trace Gas Monitor

For monitoring quality control of manufactured high-purity gases at air separation and semiconductor plants

GA-370 provides constant, ultrahigh-sensitivity and high-precision monitoring of trace impurities (CO, CO2 and CH4) for quality control at gas manufacturing facilities.

Segment: Process And Environment
Division: Ambient
Base product

Ultra-high Sensitive Measurements

  • A cross-flow modulation dual-beam non-dispersive infrared (NDIR) analyzer provides continuous and stable zero drift-free measurements.
  • Minimum detection limit (MDL) of 10ppb which can support applications where high accuracy measurements are required.

 

Measurement of trace impurities in a balance gas

  • Representative gases such as N2, O2, He, Ar, H2 and Air are supported.

 

Easy maintenance-free operation

  • Operator friendly screen menus simplify analyzer operation, calibration and measurements
  • No optical alignment ever required.
  • A touch color LCD display allows operators to view graphs of accumulated data.

 

Typical application

Industrial gases such as oxygen and nitrogen are manufactured by an air separation plant.

First, air that has had moisture (H2O) and carbon dioxide (CO2) is removed and separated to manufacture nitrogen (N2), argon (Ar) and Oxygen(O2). The separation process is based upon differences in boiling points of each of the constituent gases. Similarly, air separation plants manufacture other rare or inert gases such as Hydrogen (H2) and Helium (He).

The HORIBA GA-370 Trace Gas Monitor is a useful tool for measuring impurities that may be in the separated gas for quality control purposes.

Principle of Measurement

Cross-flow modulation dual-beam non-dispersive infrared analyzer

The GA-370 Trace Gas Analyzer uses an infrared beam in that passes through the cell of the detector. During the measurement, a solenoid valve alternately directs the sample gas and the reference gas to the cells within the analyzer.

The presence of CO, CO2; and/or CH4 in the sample gas generates a difference in the intensity of the light reaching the detector when the cells is filled with sample gas as compared to when the cell is filled with the reference gas. The differences in absorption by detector of the light from the two gases results in deflection of the detector's membrane to oscillate. This measurement technique eliminates any need for an optical chopper or optical adjustments as it eliminates zero drift and enhances sensitivity.

 

 

Model GA-370
Gases measured CO, CO2, CH4
Bulk gases N2, O2, He, Ar, H2, Air
Number of measurement components 1 component or 2 components (specify a measuring balance gas)
Measuring principle Cross-flow modulation non-dispersive infrared (NDIR) absorption method
Measurement ranges 0 to 1/2/5/10 ppm
Lowest detection limit (2σ) 10 ppb
Repeatability ≤ ± 2% of full scale
Indication error ≤ ± 2% of full scale
Zero Drift ≤ ± 0.02 ppm/day, ≤ ± 0.03 ppm/week
Span Drift ≤ ± 2% of full scale/day, ≤ ± 2% of full scale/week
Response time (T90) 

≤ 180s

Gas flow rate Sample gas : approx. 3.5L/min, reference gas : approx. 3.5L/min, span gas: approx. 3.5L/min

Note: A delivery pressure of 50-100kPa is recommended for both sample and reference gas.

Analog output 

Max. 2 channels isolated output (2 components)

Select one from 0 to 1V, 0 to 10V, 0 to 16mA, 4 to 20mA or 0 to 20mA.

Current output : Allowable load resistance 750Ω or less

Installation conditionsAmbient temperature0 to 40°C
Ambient relative humidity≤85%
DustLess than environmental standard 
Vibration≤ 0.29m/s², at ≤ 100Hz 
External dimensions, weight 430(W) x 221(H) x 555(D) mm (excluding protrusions), approx. 18kg
Power supply 100 to 240V AC, ≤ ± 10% (max. voltage: 250V AC)
Power consumption Approx. 100VA
Test Gas Generation in Research and Testing Laboratories
Test Gas Generation in Research and Testing Laboratories
Low Concentration Gas Monitoring in Coal and Consumable Fuels
Low Concentration Gas Monitoring in Coal and Consumable Fuels
GA-370 Brochure English
CategoryDocuments
Size 0.27 MB
FiletypePDF

REQUEST FOR INFORMATION

Do you have any questions or requests? Use this form to contact our specialists.

Related products

High Temperature Digital Mass Flow Controller SEC-8000 F/D/E Series
MoreHigh Temperature Digital Mass Flow Controller SEC-8000 F/D/E Series
Mixed Gas Generators MU Series (MU-2200)
MoreMixed Gas Generators MU Series (MU-2200)
POCl3 Auto Refill System FDM Series
MorePOCl3 Auto Refill System FDM Series
Test Gas Generation Systems TU Series
MoreTest Gas Generation Systems TU Series
TFH-01/47
MoreTFH-01/47
PTFE Filter/TFH membrane
51 series
More51 series
Explosion-proof Gas Analyzer
AP-370 series
MoreAP-370 series
Air Pollution Monitor
APHA-370
MoreAPHA-370
Ambient THC monitor
APMA-370
MoreAPMA-370
Ambient Carbon Monoxide Monitor
APNA-370
MoreAPNA-370
Ambient NOx Monitor
APNA-370/CU-2
MoreAPNA-370/CU-2
Ambient Ammonium Monitor
APOA-370
MoreAPOA-370
Ambient Ozone Monitor
APSA-370
MoreAPSA-370
Ambient Sulfur Dioxide Monitor
APSA-370/CU-1
MoreAPSA-370/CU-1
Ambient Hydrogen Sulfide Monitor
AQMS
MoreAQMS
Air Quality Monitoring System
Gas Monitor for Chamber Cleaning End Point Monitoring IR-200
MoreGas Monitor for Chamber Cleaning End Point Monitoring IR-200
High-grade type Gas Monitor for Chamber Cleaning End Point Monitoring IR-400
MoreHigh-grade type Gas Monitor for Chamber Cleaning End Point Monitoring IR-400
Process
MoreProcess
Process Analyzer System
PX-375
MorePX-375
Continuous Particulate Monitor with X-ray Fluorescence
VA-5000 / VA-5000WM Series
MoreVA-5000 / VA-5000WM Series
Multi-Component Gas Analyzer
Vapor Concentration Monitor IR-300
MoreVapor Concentration Monitor IR-300
51 series
More51 series
Explosion-proof Gas Analyzer
AP-370 series
MoreAP-370 series
Air Pollution Monitor
APMA-370
MoreAPMA-370
Ambient Carbon Monoxide Monitor
ENDA-5000 series
MoreENDA-5000 series
Stack Gas Analysis System
Gas Monitor for Chamber Cleaning End Point Monitoring IR-200
MoreGas Monitor for Chamber Cleaning End Point Monitoring IR-200
GI-700 series
MoreGI-700 series
Stack Gas Analyzer
High-grade type Gas Monitor for Chamber Cleaning End Point Monitoring IR-400
MoreHigh-grade type Gas Monitor for Chamber Cleaning End Point Monitoring IR-400
Laser scanning Oil Film Detector LO-300
MoreLaser scanning Oil Film Detector LO-300
MEXA-584L
MoreMEXA-584L
Automotive Emission Analyzer
MEXA-ONE
MoreMEXA-ONE
Motor Exhaust Gas Analyzer
OBS-ONE GS Unit
MoreOBS-ONE GS Unit
On-board Emissions Measurement System
Oil Content Analyzer OCMA-500
MoreOil Content Analyzer OCMA-500
Oil Content Analyzer OCMA-550
MoreOil Content Analyzer OCMA-550
PG-300 series
MorePG-300 series
Portable Gas Analyzer
TX-100
MoreTX-100
Tunable Laser Gas Analyzer
VA-5000 / VA-5000WM Series
MoreVA-5000 / VA-5000WM Series
Multi-Component Gas Analyzer
Vapor Concentration Monitor IR-300
MoreVapor Concentration Monitor IR-300