Water Vapor (H2O) ANALYZER
Probe Single Gauge
GasEye Probe H2O
Water Vapor ANALYZER
GasEye H2O is a high performance water vapor analyzer. Suitable for safety applications and process control. 24/7 continuous operation. No sample preparation. No zero drift. No field calibration. Low cost of ownership.
Features
- H2O ranges: 0 – 1000 ppmv / 0 – 100 %vol
- Process temperature: 0 – 500°C
- Process pressures: 0.7 – 2.0 barA
- Real time sensing: response time below 0.1 second
- High selectivity: automatic compensation for interference effect from other constituents in the gas sample
- High sensitivity: detection limit below 10 ppm per meter
- In-situ monitoring: direct in the process, no sample preparation
- Maintenance free: equipped with a self-calibrating feature, no field calibration necessary
- Robustness: IP66 enclosure, suitable for outdoor and indoor installations and harsh environments
- Insensitive to dust and smoke in the measured process: up to 50 g/m3

Example Applications
- Gas quality measurement
- Safety monitoring
- Process control

Example Industries
- Petrochemical industry
- Power industry
- Steel industry
- Chemical industry
Application type
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Process gas temperature: | 0ºC to 500ºC (depends on application) |
Process gas pressure: | 0.7 – 2.0 barA |
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Warm-up time: | approx. 5 minutes |
Minimum response time (T90): | 200 milliseconds |
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Ambient temperature: | -30ºC to +60ºC |
Ambient pressure: | 800 – 1200 hPa |
Ambient humidity: | RH < 99%, non-condensing |
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Purging gas: | instrument air or N2 |
Sensor purge flow rates: | 0.2 – 7 l/min |
Technical specification
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Outputs: | 4 x analog output 4 – 20 mA (gas concentration, process transmission, 2 x AUX) – easy user selection via DIP switch between active/passive mode |
8 x digital output (NAMUR) | |
Inputs: | 4 x analog input 4 – 20 mA (process temperature and pressure) – easy user selection via DIP switch between active/passive mode |
1 x RTD (PT100/PT1000) – easy user selection via DIP switch between PT100/PT1000 and 2-/3-/4-wires | |
8 x digital input | |
Local User Interface: | Human Machine Interface (HMI) – LCD backlight display located on the transmitter housing lid |
Ethernet port: a) WebServer – system configuration and data acquisition via web browser, b) Windows based program – GasEye logger for real-time data acquisition, c) remote service and diagnostics |
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Optional: | Modbus (TCP/IP), Modbus RTU, Profinet, Profibus |
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Power input: | 24 VDC nominal (19 – 30 VDC) |
Power consumption: | < 20 VA |
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Automatic gain control (AGC): | AGC ensures correct gas measurement even at high dust loads resulting in loss of optical transmission down to 0.5%. AGC operates fully automatic with no need for manual adjustment of the signal gain under any process conditions. |
Self-calibration features: | Internal reference gas compartment is used for closed loop control of the zero and span drift |
Download a file: | |
Active analog input: | preview![]() ![]() |
Active analog output: | preview![]() ![]() |
Passive analog input: | preview![]() ![]() |
Passive analog output: | preview![]() ![]() |
Isolated Digital Input: | preview![]() ![]() |
Isolated Digital Output: | preview![]() ![]() |
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Dimensions: | width x height: 330 mm x 230 mm, length: 323 mm |
Weight: | 18 kg (including probe) Probe: 6 kg |
Active optical path length: | 2x 578 mm |
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Housings: | RAL 5010 coated aluminum, (optional RAL 7040) |
Process interface: | stainless steel 316 |
Download a file: | |
GasEYE Probe setup: | preview![]() ![]() |