NH3 Gas Leakage Alarm/Sensor

Technical data: HBGS

HBGS fulfils the requirements for gas leakage measurement in accordance with F-GAS regulation EU/517/2014. HBGS detects
NH3 (R717) in a range of 25… 500 ppm. It is an independent unit that must be supplied with 24 V DC. It has 3 built-in digital alarm outputs and 1 analogue 4… 20 mA output. The sensor can be set up using a PC with the HB Configuration Tool.

The sensor differentiates itself from other sensors on the market by having a measuring head that remains stable in the longterm (thick film metal oxide semiconductor type). The sensor element can easily be replaced. On the front, you can find 4 integrated LEDs for display of the supply (green) as well as 3 alarm levels (red, orange, and yellow). Similarly, there is a reset button in case an alarm is triggered. The sensor is factory calibrated and does only require additional calibration in special applicationwith high gas concentration. The sensor is optimized for use in areas where cleaning solvent are used. Built-in heating element ensures low ambient temperatures down to -20 ° C.

The sensor comes with a calibration certificate as well as with preconfigured alarm limits.

Product features

  Integrated LED's for display of the supply (green) as well as 3 alarm levels (red, orange and yellow).
  The sensor is factory calibrated and does not require additional calibration at startup. The sensor comes with a calibration certificate as wellas with configured alarm limits.
  Signal output for alarm light.


Electrical installation

HBGS web 


HBGS drawing 


Power supply
ConnectionTerminals for cables
Power supply24 V DC
Analog output4...20 mA
Max load500 ohm
Digital output, relay3 x SPDT, 0,5A
Environmental conditions
Ambient temperature-20...+50°C
Protection degreeIP20
VibrationIEC 68-2-6 (4g)
Mechanical specifications
Cabinet size82x59x126 
EMC testEN 61000-2
Alarm device - part number Sounder Beacon
Alarm  can be configured with HB-tool
Alarm limits25 to 500 ppm
Alarm A400 ppm NO/NC (Main alarm acc. to EN378)
Alarm B250 ppm NO/NC (Pre-alarm acc. to EN 378)
Alarm C100 ppm NO/NC (Pre-alarm acc. to EN 378)

Ordering code

Measurement area ppmGasOrdering code
25...500 ppmNH3 (R717)HBGS-NH3
Accessory for test and calibrationGasOrdering code
Part no. Service kitNH3 (R717)HBGS-NH3-ServiceKit
Part no. Sounder/flash lightNH3 (R717)Sounder Beacon