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Instruments - Gas Analyzers

Series 1200 Trace Nitrogen in Argon Analyzer
Applications include: Air separation plants, cryogenic truck loading stations, specialty gas laboratories, new line certification, cryogenic steel manufacturing, chemical plants, gas management/monitoring systems, quality control for truck fills and gas cylinders, process control, welding gas management, semiconductor manufacturing.
- Available in three CE approved configurations: 0-10/0-100 parts per million (ppm), 0-2/0-20 ppm, 0-20/0-200 ppm
- Guaranteed 10 ppb sensitivity
- Measuring system based on spectral emission of argon plasma
- Exceptional detector performance by utilizing patented electro-optical modulation
- On-line continuous trending
- Fast response
fast recovery
- Ambient temperature limits: 16-35 °C
- Display: LED digital
- Sensitivity: ± 0.01 ppm
- Output: 4-20 mA
- Dry contacts for over-range protection and range selection indication
- Non-depleting cell for extended operation
- No valves, columns, or carrier gas
- No radioactive source
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz

Series 1300 Trace Nitrogen in Helium Analyzer
Applications include: Helium purification plants, cryogenic truck loading stations, specialty gas laboratories, process control, new line certification, chemical plants, gas management/monitoring systems, quality control for truck fills & gas cylinders, welding gas management, semiconductor manufacturing
- Available in two CE approved configurations: 0-2/0-20 parts per million (ppm) and 0-20/0-200 ppm
- Guaranteed 10 ppb sensitivity
- Measuring system based on spectral emission of argon plasma
- Exceptional detector performance by utilizing patented electro-optical modulation
- On-line continuous trending
- Fast response
fast recovery
- Ambient temperature limits: 16-35 °C
- Display: LED digital
- Sensitivity: ± 0.01 ppm
- Output: 4-20 mA
- Dry contacts for over-range protection and range selection indication
- Non-depleting cell for extended operation
- No valves, columns, or carrier gas
- No radioactive source
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz

Series 1400 Trace Moisture in Argon Analyzer
Applications include: air separation plants, argon purification plants, cryogenic truck loading stations, specialty gas laboratories, process control, new line certification, cryogenic steel manufacturing, chemical plants, gas management/monitoring systems, quality control for truck fills & gas cylinders, welding gas management, semiconductor manufacturing
- Available in two CE approved configurations: 0-2/0-20 parts per million (ppm) and 0-5/0-50 ppm
- Guaranteed 10 ppb sensitivity
- Measuring system based on spectral emission of argon plasma
- Exceptional detector performance by utilizing patented electro-optical modulation
- Cannot blind the instrument
- On-line continuous analysis
- Fast response
- Recovers quickly from high moisture levels
- No permanent degradation of detector due to high moisture levels
- Extreme periods of acute dryness will not affect response or detector
- 4-20 mA output
- Dry contacts for over range indication
- Dry contacts for range selection indication
- No valves, columns, or carrier gas
- No radioactive source
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz

Series 900 Toxic Gas Analyzer
GOW-MAC's Series 900 Toxic Gas Analyzer is a highly selective and precise analytical instrument engineered for quantifying trace amounts of toxic gases in industrial gas applications.
The principle of this automated, fully digital instrument is based on aqueous scrubbing of the target gas by a coil sampler coupled with a gas-liquid separator, followed by derivatization of the analyte to form a highly light-absorbing chromophore in an on-line reactor. The derivative then is quantified by a colorimetric detector.
Any gas species with potential to be derivatized can be determined by the Series 900 Toxic Gas Analyzer; e.g.: HF, NH 3 , H 2 CO, HONO, HCl, SO 2 , H 2 S, HCHO and aldehydes, etc. The Analyzer is not only able to determine trace level toxic gases in air, but also to quantify the ppb/ppm level impurities in industrial processing and electronic gases, such as N 2 , N 2 O, NF 3 , CxHy, etc. Custom applications based on your specific needs are available for evaluation by request.
Features
- Colorimetric detector
- Internal sample pump
- Adjustable flow rate and light intensity
- 4-20 mA or voltage output
- 19 rack mounted design
- Detection range of 5 ppb to 10 ppm (application dependent)

Series 200ACE Acetaldehyde Analyzer
Meets ISBT Method 11 criteria for selective measurement of acetaldehyde in CO 2
- Rugged, low cost, low maintenance, turn-key system
- Capable of PC-based control and data logging
- Batch or continuous stream monitoring
- Detector: Flame Ionization Detector (FID)
- Automatic, hands-free calibration, flow setting and analysis
- Detection limits for acetaldehyde of < 30 part-per-billion (ppb)
- Instrument operating temperature: ambient
- Detector temperature: factory set; adjustable
- Oven temperature regulation: factory set with software controlled conditioning
- Tested against virtually all of the potential alcohol and oxygenate impurities that could be present and determined to be interference-free
- Acetaldehyde is captured by the software system, with results displayed digitally on the instrument's front panel
- On-board software package contained in the Series 200ACE allows complete unattended operation
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz

Series 200AHC Aromatic Hydrocarbon Gas Analyzer Meets all ISBT Method 12 criteria for selective measurement of benzene in CO 2
- Rugged, low cost, low maintenance, turn-key system
- Capable of PC-based control and data logging
- Batch or continuous stream monitoring
- Detector: Photoionization Detector (PID)
- Automatic, hands-free calibration, flow setting and analysis
- Detection limits for benzene of < 5 ppb
- Instrument operating temperature: ambient
- Detector temperature: factory set; adjustable
- Oven temperature: factory set with software controlled conditioning
- Tested against virtually all of the potential alcohol and oxygenate impurities that could be present and determined to be interference-free
- Benzene is captured by the software system with results displayed digitally on the instrument's front panel
- On-board software package contained in the Series 200AHC allows complete unattended operation
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz

Series 200BTEX Gas Analyzer Meets all ISBT Method 12 criteria for selective measurement of BTEX (benzene, toluene, ethyl benzene, o-xylene, m-xylene, and p-xylene) in CO 2
- Rugged, low cost, low maintenance, turn-key system
- Features: Auto-Calibration, Auto-Calibration Validation, Process/Manual mode, As Found/As Left function, Sample stream selection, and six 4-20 mA outputs
- Capable of PC-based control and data logging
- Batch or continuous stream monitoring
- Detector: Photo Ionization Detector (PID)
- Automatic, hands-free calibration, flow setting and analysis
- Detection limits for benzene of < 5 ppb
- Instrument operating temperature: ambient
- Detector temperature: factory set; adjustable
- Oven temperature: factory set with software controlled conditioning
- Tested against virtually all of the potential alcohol and oxygenate impurities that could be present and determined to be interference-free
- Benzene is captured by the software system, with results displayed digitally on the instrument's front panel
- On-board software package contained in the Series 200AHC allows complete unattended operation
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz

Series 200BXA BTEX in Air Analyzer Selective measurement of BTEX (benzene, toluene, ethyl benzene, o-xylene, m-xylene, and p-xylene) in air
- Rugged, low cost, low maintenance, turn-key system
- Features: Auto-Calibration, Auto-Calibration Validation, Process/Manual mode, As Found/As Left function, Sample stream selection, and six 4-20 mA outputs
- Capable of PC-based control and data logging
- Batch or continuous stream monitoring
- Uses proprietary Photo Ionization Detector (PID)
- Automatic, hands-free calibration, flow setting and analysis
- Detection limits for benzene of < 5 ppb
- Instrument operating temperature: ambient
- Detector temperature: factory set; adjustable
- Oven temperature: factory set with software controlled conditioning
- Tested against virtually all of the potential alcohol and oxygenate impurities that could be present and determined to be interference-free
- Benzene is captured by the software system, with results displayed digitally on the instrument's front panel
- On-board software package contained in the Series 200AHC allows complete unattended operation
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz
Series 200SA Sulfur Analyzer

Meets ISBT Methods 13 and 14 criteria for selective measurement of total sulfur content (TSC), total sulfur content excluding SO2 (TSC*) measurements, and speciating SO 2 from other sulfur impurities in beverage grade, vaporized,
liquid CO 2
- Rugged, simple to use, low maintenance
- Batch or continuous stream monitoring
- Automatic, hands-free calibration, flow setting and analysis
- Rack mount or bench-top
- Detector: Flame Photometric Detector (FPD)
- Auto-Calibration and sample introduction
- Capable of PC-based control and data logging
- Detection limits for all sulfurs of < 5 ppb
- Instrument operating temperature: ambient
- Detector temperature: factory set; adjustable
- Oven temperature: factory set with software controlled conditioning
- Sulfur is captured by the software system, with results displayed digitally on the instrument's front panel
- Provides rapid, interference-free identification of all common, volatile sulfur-containing compounds (VSC) including H 2 S, COS, SO 2 , and CH 3 SH in beverage grade, vaporized, liquid CO 2
- Each sulfur species is captured by the software system, with results displayed digitally on the instrument's front panel
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz

Total Hydrocarbon Analyzers
Models 23-550-1 and 23-750-1 w/ Catalytic Methanizer
Ideal quantitative instruments for ambient air analysis, petrochemical industries, gas manufacturers and various other chemical industries, engine exhaust monitoring, stack gas emissions and environmental studies
- Continuous ppm and sub-ppm measurement of hydrocarbons and CO and CO 2 in gas streams
- Two Models: 23-550-1 or 23-750-1 with Catalytic Methanizer
- Operates on 100% H 2 , 40/60% H 2 /N 2 or H 2 /He Fuel Mixes
- Detector: Flame Ionization Detector (FID)
- Individual Flow Control Systems
- Pneumatic controls
- 3 Ranges: 00.00 ppm to 199.00 ppm (0.01999%), 000.0 ppm to 1999.9 ppm (0.19999%), 0000 ppm to 19,999 ppm (1.9999%)
- Resolution of 0.1 ppm (23-550-1) total hydrocarbons over normal temperature ranges using zero grade H 2 as fuel (0.03 ppm on the 23-750)
- Output: Digital Meter, 4½ digit LED, 100 mV recorder terminal (standard); 4-20 mA output (standard); Hi or Hi/Low alarms (optional)
- Pump Assembly (optional)
- Safety: flame-out indication with automatic fuel and sample line shut off
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz

Series 23-550-BG Total Hydrocarbon Gas Analyzer for Beverage Grade CO2 Continuously measure concentrations of total volatile hydrocarbons (THA) in beverage-grade CO 2 gas and vaporized liquid streams pursuant to ISBT Method 10.0 criteria.
- Operates on 100% H 2 , 40/60% H 2 /N 2 or H 2 /He Fuel Mixes
- Individual Flow Control Systems
- 3 Ranges: 0.0 ppm to 99.99 ppm, 0.0 ppm to 999.9 ppm, 0.0 ppm to 9,999 ppm
- Sample introduction via a vaporized liquid CO 2 source, pressurized tanks and/or individual sample cylinders
- Flame Ionization Detector (FID)
- Individual Flow Control Systems
- Pneumatic controls
- Operating Temperature: 25 °C ± 10 °C
- Resolution of 0.1 ppm v/v total hydrocarbons over normal temperature ranges using zero grade H 2 as fuel
- Safety: flame-out indication with automatic fuel and sample line shut off
- Installation: bench or 19 rack
- Power: 115-230 V, 50-60 Hz

50 Series Continuous Duty Gas Analyzer Designed for continuous sampling and quantitative analysis of binary process streams of industrial gases and other gas mixing, cylinder identification, and atmosphere control applications.
Applications: Binary gas mixes containing H 2 , He, O 2 , Ar, CO 2 , Air, N 2 , NH 3 , Freon; Helium reclamation, helium purification systems, helium transfill guard systems, to name just a few. Contact us to request a full list.
- Custom designed to meet client specifications
- Detectors: thermal conductivity detector (TCD) or discharge ionization detector (DID)
- Temperature regulated TCD enables continuous monitoring applications with minimum zero drift
- Optimized, Self-Contained Gas Flow System
- Choice of standard, corrosion resistant or all stainless steel system
- Ambient operating temperature: 0-49 °C
- Detector temperature: 100 °C, factory set (TCD); 70 °C , factory set (DID)
- Sensitivity: application dependent
- Purgeable Housing (optional)
- Class 1, Div 1, Group B, C, D and Class 1, Div 2, Group B, C, D available systems
- Installation: bench or 19 rack mount
- Power: 115-230 V, 50-60 Hz
Custom Applications
We specialize in manufacturing custom engineered Analyzers, therefore, we ask you to give us your specific application parameters in order to quote the appropriate Analyzer for your needs. Click the "View Custom Application Data Sheet" link to reveal our form.

20 Series Binary Gas Analyzer Designed for non-continuous sampling and quantitative analysis of binary process streams of industrial gases and other gas mixing, cylinder identification, and atmosphere control applications.
Typical Binary Gas Applications
NH 3 in Air H 2 in N 2 Argon in Helium H 2 in O 2 CO 2 in N 2 (flue gas) Methyl bromide in Air CO 2 in Helium Natural gas in Air Freon in Air N 2 in Argon Helium in Air O 2 in Air Hydrocarbons in He O 2 in H 2 SO 2 in Air F 2 in N 2
... and many others
- Designed as either a single or a dual pass unit
- Purgeable housing (optional)
- Single pass Analyzer hermetically sealed reference thermal conductivity detector (TCD)
- Dual pass Analyzer flowing reference TCD
- Pump (optional)
- Gas selection manifold for zero, calibration, and sample gases
- Optimized, Self-Contained Gas Flow System
- Choice of standard, corrosion resistant or all stainless steel system
- Ambient operating temperature: 0-49 °C
- Detector temperature: 100 °C, factory set (optional)
- Temperature regulation (optional)
- Sensitivity: application dependent
- Class 1, Div 2, Group B, C, D available systems
- Installation: bench or 19 rack mount
- Power: 115-230 V, 50-60 Hz
Custom Application Data Sheet
We specialize in manufacturing custom engineered Analyzers, therefore, we ask you to give us your specific application parameters in order to quote the appropriate Analyzer for your needs. Click the "View Custom Application Data Sheet" link to reveal the form.

Model 20-600 Portable Binary Gas Analyzer The Model 20-600 is designed for the quantitative measurement of binary gas mixtures. This rugged, battery operated instrument is ideal for on-site gas measurement.
Typical Applications
NH 3 in Air H 2 in CH 4 Freon in Air Refrigerant 12 in Air CO 2 in N 2 (flue gas) Natural Gas in Air Helium in Air N 2 in Argon O 2 in H 2 O 2 in Air Halon 1301 in Air Argon in Helium CH 4 in Air CO 2 in Helium ... and many others
- Dual Range Calibration
- Custom Designed to Your Application
- Response time < 30 seconds
- AC or Rechargeable Battery operated
- Sensitivity: can be calibrated for as low as 0.5% CO 2 in Air
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