Hydrogen Measuring Device TCS

Product catalog summary

Properties
The ZIROX Hydrogen Sensor TCS measures hydrogen concentration using a Thermal Conductivity Sensor (TCS), leveraging hydrogen's higher thermal conductivity compared to other gases. The sensor outputs a voltage linearly related to hydrogen concentration, though actual readings follow a complex calibration curve. It can be used in surface treatment equipment, such as case hardening under vacuum, requiring special software and process pressure information from the customer.

Applications
The sensor is designed for continuous monitoring of hydrogen concentration in industrial and protective gases. It can signal deviations from set points or monitor hydrogen-utilizing production processes.

Technical Data

Measuring Range: 0 to 100 vol%
Accuracy: Relative error < 5%
Response Time: Approximately 180 seconds, depending on gas distribution
Sensor Temperature: 50°C, electronically controlled
Dimensions: 80 mm x 125 mm x 83 mm
Signal Output: Analog output 0/4 - 20 mA, RS232 interface, 0 – 5/10 V on request
Power Supply: 24 VDC ± 20%, approx. 20 W
Display: None, operation via software
Protection Degree: IP 65
Ambient Temperature: 0 to 50°C, 0 to 95% relative humidity
Storage Temperature: -20 to 60°C, 0 to 95% relative humidity
Gas Connection: Via DIN40KF, others on request
Gas Supply: Via diffusion, suction mechanism on request
Ambient Pressure: 950 to 1100 hPa, special calibration needed for underpressure applications
Warm-up Time: 10 minutes
Calibration: Initial calibration by manufacturer, 2-point calibration by customer every 3 months, process pressure must be provided
Mounting: No specific requirements
Cross Sensitivity: Gases with high thermal conductivity can affect results

Plug Assignment
Type 423 6pol., Fa. Binder, Best.-Nr.: 99-5622-15-06:

1 rt + 24 V
2 sw GND
3 gn + Iout
4 ge - Iout
5 br Ready contact (potential-free)
6 ws

Catalog excerpts

ZIROX- Hydrogen Sensor TCS Properties The hydrogen concentration is measured by the Thermal Conductivity Sensor. For this measurement the much higher thermal conductivity of hydrogen in contrast to other gases is utilized. The TCS gives a voltage which depends linearly on the hydrogen concentration (ideally; actually the characteristic line follows a complicated mathematical function established by complex calibrations). The TCS can also be used for surface treatment equipment (e.g. case hardening under vacuum conditions). For this purpose a special software is needed. For exact measuring results the customer must inform the manufacturer about the process pressure before delivery. Applications The ZIROX hydrogen sensor TCS serves the continuous measuring of the hydrogen concentration in industrial and protective gases. Deviations from a set-point can be signalized or production processes with use of hydrogen can be monitored by the TCS. ZIROX Hydrogen Sensor TCS

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