DOL 53 Ammonia Sensor

For continuous NH3 monitoring

Finally you can incorporate ammonia level readings into everyday climate control for better air quality and smarter ventilation strategies. DOL 53 is an electrochemical, long-term stable NH3 sensor developed by the company Dräger. The sensor is very robust and well-suited for use in livestock facilities. The Big Dutchman group was the first equipment supplier offering this sensor.

DOL 53 permanently monitors the ammonia concentration in the house air, thus permitting the house climate to be controlled based on the sensor’s measurements. Our climate computers ViperTouch and 307pro can receive and process the data provided by the sensor to regulate the house climate according to the measured values. Additionally, the AC Touch alarm unit can record the data and use BigFarmNet to analyze them.


  • Long-term stable NH3 sensor
  • Robust and well-suited for livestock facilities
  • Easy to install
  • Continuous measurement of ammonia
  • Allows for climate control based on ammonia levels with the 307pro computer
  • Integrates easily into existing houses and climate control systems
  • Analog 0 to 10V output

Technical Data

Measuring range of the sensor:
Power supply:
Current consumption:
Temperature range:
Protection rating:
Service life:

0 to 100 ppm NH3
1.5 ppm or +/- 10% of the measured value
Rated voltage 24V (15 to 30V DC)
<10 mA
0 to 50 degrees Celcuis
15 to 95%
100 x 200 x 50 mm
450 g
IP 65
3 years from commissioning (expiration date: See label on sensor)