What Makes DOL 51 and DOL 53 Different?
Our sensors are specifically designed for continuous measurement of ammonia (NH3) concentration in livestock houses.
The DOL 51 and DOL 53 features:
- Electrochemical sensing technology optimized for ammonia measurement
- Livestock-specific construction
- Low maintenance requirements
- Easy integration with existing climate control systems
- Continuous measurement for automated ventilation control
- Components designed to withstand dusty agricultural environments
- Replaceable filter supports easy maintenance and helps extend sensor performance
- Measurements are highly selective and are not affected by the presence of other gases
While both DOL 51 and DOL 53 use electrochemical sensing technology, they are optimized for different applications. DOL 53 is designed for continuous ammonia monitoring inside poultry houses to support ventilation control and production management, while DOL 51 is optimized for air cleaning systems where extremely high humidity and condensation resistance are critical.
How to Keep Sensors Working in High-Ammonia Conditions
Proper maintenance plays a major role in maximizing sensor performance and lifespan.
Some best practices include:
1. Install Sensors Correctly
Avoid locations with excessive dust accumulation, water exposure, or direct wash-down contact. Follow manufacturer recommendations regarding mounting height and placement.
2. Keep Filters Clean
Dust is one of the biggest threats to measurement accuracy. Regular inspection and cleaning of sensor protection components can significantly improve reliability.
3. Monitor Environmental Conditions
High humidity and condensation can affect sensor performance. Maintaining stable ventilation helps protect both the sensor and the birds.
4. Replace Wear Components Proactively
Waiting until a sensor completely fails can result in periods without accurate ammonia monitoring. Planned replacement schedules help prevent unexpected downtime.
Why Poultry Producers Choose dol-sensors
Ammonia monitoring is only valuable if the sensor can deliver reliable measurements day after day in the demanding conditions of a livestock house. Dust, humidity, temperature fluctuations, and continuous ammonia exposure create challenges that many sensors must withstand throughout their service life.
Together, DOL 53 and DOL 51 offer livestock producers a complete ammonia monitoring solution designed specifically for agricultural environments. With long service life, proven reliability, and technology tailored to real-world farm conditions, they help producers make more informed ventilation decisions while reducing maintenance and monitoring costs.





