Orbisphere 312xx Hydrogen Sensors

The Orbisphere patented Thermal Conductivity sensor has been developed to give continuous H2 measurements in gas phase or dissolved in a liquid. The measuring technique is a combination of a gas diffusion membrane and a solid-state gas thermal conductivity detector.
A micro volume enclosed between a semi-permeable membrane and a thermal conductivity detector is periodically flushed with a purge gas. After each purge, the gas to be measured diffuses from the sample through the membrane, changing the thermal conductivity of the gas surrounding the detector. A change in thermal conductivity modifies the detector resistivity. This is measured, together with temperature, to calculate the gas concentration.

• Continuous H2 measurements
• Selective measurement, result unaffected by the presence of other gases
• Fast response time to improve plant productivity
• Compact design for easy insertion into a process line or a flow chamber
 
  Wetted Materials
31230.01

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The greater of ±1% of reading, or ±0.03 ppb, or ±1 Pa (Membrane 2956A) Range at 25 °C Membrane 2956A : 0 - 75 ppb or 0 Pa - 5 kPa
Membrane 2952A : 0 - 300 ppb or 0 Pa - 20 kPa
Membrane 2995A : 0 - 3200 ppb or 0 Pa - 200 kPa
Membrane 29015A : 0 ppb - 32 ppm or 0 - 2000 kPa
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31290TC

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(Sample temp. 20-50°C within ± 5°C of calibration temperature)
The greater of
Membrane 29561A : ±1% of reading, or ±2 ppb, or ±0.03 cc/kg, or ±1.5 bar
Membrane 2952A : ±1% of reading, or ±8 ppb, or ±0.1 cc/kg, or ±6 mbar
Membrane 2935A : ±1% of reading, or ±25 ppb, or ±0.4 cc/kg, or ±20 mbar
Range at 25 °C Membrane 29561A : 0 - 2 ppm, or 0 - 25 cc/kg, or 0 - 1.5 bar
Membrane 2952A : 0 - 10 ppm, or 0 - 120 cc/kg, or 0 - 6 bar
Membrane 2935A : 0 - 20 ppm, or 0 - 220 cc/kg, or 0 - 12 bar
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31290HP

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(Sample temp. 20-50°C within ± 5°C of calibration temperature) The greater of Membrane 29561A : ±1% of reading, or ±2 ppb, or ±0.03 cc/kg, or ±1.5 bar
Membrane 2952A : ±1% of reading, or ±8 ppb, or ±0.1 cc/kg, or ±6 mbar
Membrane 2935A : ±1% of reading, or ±25 ppb, or ±0.4 cc/kg, or ±20 mbar
Range at 25 °C
Membrane 29561A : 0 - 2 ppm, or 0 - 25 cc/kg, or 0 - 1.5 bar
Membrane 2952A : 0 - 10 ppm, or 0 - 120 cc/kg, or 0 - 6 bar
Membrane 2935A : 0 - 20 ppm, or 0 - 220 cc/kg, or 0 - 12 bar
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31270

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(sample temp. 0-50°C independent of calibration temperature) The greater of ± 2 % Membrane 29561A : ±1% of reading, or ±2 ppb, or ±0.03 cc/kg, or ±1.5 bar
Membrane 2952A : ±1% of reading, or ±8 ppb, or ±0.1 cc/kg, or ±6 mbar
Membrane 2935A : ±1% of reading, or ±25 ppb, or ±0.4 cc/kg, or ±20 mbar
Range at 25 °C Membrane 29561A : 0 - 2 ppm, or 0 - 25 cc/kg, or 0 - 1.5 bar
Membrane 2952A : 0 - 10 ppm, or 0 - 120 cc/kg, or 0 - 6 bar
Membrane 2935A : 0 - 20 ppm, or 0 - 220 cc/kg, or 0 - 12 bar
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31285TC

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31291TC

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31292HP

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31292TC

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