Produce gas mixtures and automatically control their relative humidity in one instrument.
The IGM-RH from Gometrics Instruments is a gas mixer and humidifier for calibration laboratories, instrumentation testing and R&D. It prepares mixtures from reference gases and conditions their humidity in a single instrument, delivering the gas composition and humidity level required for each test.
The instrument accepts two reference cylinders with different concentrations, which can operate simultaneously, and a balance-gas inlet for dilution using pure clean gas or dry air. Channel CH1 is humidified and mixed with the balance gas to produce a controlled humid output. Gas types and components are configurable to suit different test procedures.
Each channel controls flow with full-scale ranges from 8 to 25,000 ml/min, accuracy better than ±1% of reading and repeatability better than ±0.2%. These capabilities provide consistent, repeatable test conditions for assessing gas analysers and sensors.
Its robust construction supports benchtop use or panel mounting for integration into existing laboratories and instrumentation systems.
• Two reference gases with different concentrations can operate simultaneously, with a balance-gas inlet for dilution.
• Controlled humidification of CH1, mixed with the balance gas to provide a humid output.
• Flow control from 8 to 25,000 ml/min full scale, with independent full-scale ranges for each channel.
• Per-channel accuracy < ±1% of reading and repeatability < ±0.2% of reading.
• Configurable gas types and components.
• Benchtop or panel mounting, with a universal 100–260 VAC power supply.
• Two functions in one instrument: gas mixing and humidification.
• Versatile operation with different reference gases and test procedures.
• Reproducible tests through consistent, controlled humidity conditions.
• Easy integration into existing laboratories and instrumentation systems.
• Robust construction for stable operation within the specified operating conditions.
• Calibration laboratories: generate controlled humidity conditions for testing gas measurement instruments.
• Gas analyser and sensor calibration: condition reference gases to assess instrument response.
• Instrumentation testing: simulate environmental conditions with humidity-controlled gas mixtures.
• Research and development: investigate gas and sensor behaviour.
• Quality control: verify gas analysis equipment under known humidity conditions.
• Industrial processes: condition gas streams that require humidity control.
Reference gases
2 cylinders with different concentrations, operating simultaneously
Balance gas
1 inlet (pure clean gas or dry air)
Gases
Configurable gas types and components
Humidification
CH1 is humidified and mixed with the balance gas; controlled humid output
Flow range per channel
8 to 25,000 ml/min full scale (independent full-scale ranges per channel)
Maximum mixture flow
Sum of the flows of each channel
Accuracy per channel
< ±1% of reading
Repeatability per channel
< ±0.2% of reading
Typical inlet pressure
2–6 barg (200–600 kPa)
Flow units
ml/min at 20 °C and 1013.25 mbar
Power supply
100–260 VAC, 50/60 Hz
Power consumption
120 W max.
Ambient temperature
0–40 °C
Ambient humidity
5–90%
Installation
Indoor, on a bench or control panel
Dimensions (W × D × H)
550 × 654 × 265 mm
Weight
15.7 kg
Tell us about your gases, flow rates and test conditions. Our team will help you find the right configuration.
