Measurement and Testing
Real-time hand-held hydrogen analyser
May 05 2022
The Model 105, from PID Analyzers, is the ideal portable analyser for the measurement of hydrogen (H2) for worker health and safety and for quality control/quality assurance measurements in a binary gas mixture.
Using a thermal conductivity (TCD) sensor for the measurement of ppm or % LEL of hydrogen, the Model 105 boasts a 2.4” OLED display that is bright and readable in well- and low-lit conditions. This device is easy to calibrate, provides a fast response and requires only one step to send real-time to a PC or phone via WIFI and/or Bluetooth. Users can opt to NOT have the analyser equipped with these network capabilities and simply use the internal data logging feature instead.
The Thermal Conductivity Detector (TCD) measures the difference (change in resistance) in cooling between the sample and a sealed reference through a Wheatstone Bridge circuit that detects small changes in resistance. This difference in the signal between the measurement and reference sensors is amplified and the output is displayed on the digital meter after processing. The range for the TCD can be 0-2.000 ppm or 0-50 % v/v. The detection limit on the ppm range is approximately 20 ppm.
The compact Model 105 operates at temperatures ranging between 0-50 degrees C, with accuracy of +/- 2%. It has CE and RoHS certification and an adjustable alarm, providing visual and audible warnings, that can be set to the end-users criteria, as well as a ‘sleep’ function to extend battery life.
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