NH3 Compressor Protection

Technical data: HBCP

HBCP is a new revolutionary, patent-pending sensor technology and it is the first sensor in the world capable of measuring the condition of gas and liquid refrigerant in a refrigeration system. HBCP is used for detecting gas quality at the intake found on refrigeration compressors. The sensors thereby ensure that liquid refrigerant does not enter the compressor, causing damage to the moving parts.

The sensor has a high sensitivity and even detects small liquid droplets before they become critical to the compressor. The sensor has a uniquely low reaction time, and thereby ensures that the compressor is not damaged. In the event of liquid hammer, an instantaneous alarm is sent to the compressor control, which must signal an emergency stop to the compressor. The sensor measures the total gas and liquid capacity, which is displayed in pF.

Product features

The sensor protects the compressor against damage in the event of liquid hammer from the system.
Setting up the sensor using a PC allows for adjustments to match the system and the compressor.
Instantaneous reaction without delays.




Connection diagram

 HBLC web 1




HBCP-Rod style

Power supply
Voltage24 V DC + 10%
Power usageMax 30 mA
Plug connectionM12, 5 pins
Transsistor PNPNO or NC (programmable)
Alarm indication for gas/liquid conditionWarning / Alarm
Environmental conditions
Ambient temperature-30°C...+50°C
Refrigerant temperature-60°C...+80°C
Max. pressure100 bar
Waterproof ratingIP65
VibrationsIEC 68-2-6 (4g) 
Mechanical specifications
Thread connection3/4” NPT and 1" BSPP 
Material of the parts coming into contact with liquidAISI 304
Material of the electronic partsGF BLK, Nylon 6 (PA)
OutputSee drawing
Type Front housing 
EMC testEN 61000-2
5m cable with M12 plug HBxC-M12/5 
Cable specifications PUR -5 x 0,34mm2 
LED IndicationLED (green, yellow, and red)
ConfigurationWith the PC tool

Ordering code

Pipe size (compressor line)LengthConnectionOrdering code
2"150 mm3/4" NPTHBCP-1.5-2
2"150 mm3/4" BSPPHBCP-1.5-6
> 2"300 mm3/4" NPTHBCP-3-2
> 2"300 mm3/4" BSPPHBCP-3-6
> 2"300 mm1" BSPPHBCP-3-8
> 2"300 mm1" NPTHBCP-3-9
Electronic PartMust be calibrated on-site HBCP-EL


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