High-Humidity Ammonia Sensor for Livestock Air Treatment

The High-Humidity Ammonia Sensor for Livestock Air Treatment is designed for continuous measurement of ammonia (NH3) in demanding livestock exhaust-air and air-cleaning applications where relative humidity can become extremely high.

Unlike conventional barn sensors intended primarily for normal indoor climate monitoring, this configuration incorporates a heated air path around the measuring inlet to reduce condensation problems. It is therefore particularly suitable for the clean-gas side of livestock air scrubbers, exhaust-air treatment systems and other humid process-air locations.

For commercial pig farms, poultry facilities and large livestock projects, continuous NH3 monitoring provides valuable operating data for evaluating air-cleaning performance, documenting treated exhaust-air quality and supporting environmental management.

• Designed for Extreme Humidity: Suitable for applications where air humidity may reach approximately 95–100% RH.
• Heated Measuring Inlet: A heated convection or air-guiding section helps minimize condensation around the NH3 measuring point.
• Continuous Ammonia Measurement: Provides stationary monitoring of residual ammonia concentration in livestock exhaust air.
• Electrochemical NH3 Detection: Uses an electrochemical sensing element for continuous ammonia measurement.
• Direct Airstream Installation: Can be mounted directly in the process airstream without external sampling tubes or pumps.
• Low Cross-Sensitivity: Designed to provide selective ammonia measurement with limited interference from other common gases.
• Air-Cleaner Performance Monitoring: Suitable for checking residual NH3 levels after air passes through livestock-house filtration or scrubbing equipment.
• Replaceable Service Parts: Sensor element and dust filter can be replaced when required.
• Low Routine Maintenance: Designed for long-term livestock applications with reduced calibration and servicing requirements.
• Project Integration: Can be incorporated into livestock environmental monitoring, PLC and farm automation projects according to system requirements.

• Electrochemical NH3 sensor element
• Heavy-duty protective sensor housing
• Replaceable dust filter
• Heated convection cap / measuring inlet
• Internal signal-processing electronics
• Electrical connection cable
• Status indication components
• Fixed mounting or suspension structure

The sensor is installed directly in the exhaust-air or treated-air stream. Ammonia-containing air reaches the electrochemical sensing element through the measuring inlet, where the NH3 concentration is converted into an electrical measurement signal.

In high-humidity applications, condensation at the sensor inlet can interfere with conventional measurement equipment. The heated convection section helps keep the measuring path suitable for gas diffusion even when moisture levels are extremely high.

When installed after an air-cleaning system, the sensor measures the remaining ammonia concentration on the clean-gas side. Comparing this information with inlet-side NH3 data allows farm operators and project engineers to evaluate the performance of the air-treatment system.

Final electrical specifications, output signal, installation accessories and system compatibility should be confirmed according to the selected project configuration.

• Pig-house exhaust-air treatment systems
• Livestock air scrubbers and air cleaners
• Clean-gas-side ammonia monitoring
• High-humidity livestock ventilation systems
• Commercial pig farm emission-control projects
• Poultry-house air-treatment projects
• Centralized exhaust-air treatment installations
• Biological and chemical air-cleaning systems
• Livestock environmental monitoring networks
• Farm emission documentation and process monitoring

• Signal output configuration according to project requirements
• Cable length available upon request
• Mounting accessories customizable for duct, chamber or air-cleaner installation
• Integration with livestock climate controllers and PLC systems
• Multi-point NH3 monitoring solutions for large livestock farms
• Inlet-side and outlet-side sensor configurations for air-cleaning efficiency monitoring
• Control cabinet and data-monitoring integration available upon request
• System design according to local climate and farm conditions
• OEM and livestock engineering project configurations available upon request

Installation Position: Install the sensor directly in a representative exhaust-air or clean-gas airstream according to the air-treatment system design. The selected location should provide stable airflow across the measuring inlet.

Air-Cleaner Installation: For performance monitoring, the high-humidity sensor is typically positioned on the clean-gas side after the filtration or scrubbing stages. An additional upstream NH3 sensor may be used when inlet-versus-outlet performance data is required.

Electrical Connection: Wiring should follow the selected signal-output specification and the requirements of the livestock climate controller, PLC or data-acquisition system.

Maintenance: Check the dust filter and measuring inlet periodically. Replace the filter or sensor element according to operating conditions and service requirements.

Cleaning: Protect the sensing components during high-pressure washing, aggressive chemical cleaning or farm disinfection procedures. Follow the approved maintenance procedure for the selected sensor configuration.

Commercial Pig Farm Air Scrubber: The sensor can be installed downstream of an exhaust-air cleaner to continuously measure residual NH3 after the air passes through the cleaning stages. The measurement data can be used to document treated-air quality and identify changes in scrubber performance.

Inlet and Outlet Monitoring: A standard livestock-house ammonia sensor can be installed before the air-treatment unit while the high-humidity sensor is positioned on the clean-gas side. Comparing both signals provides useful information for evaluating ammonia-removal efficiency.

Multi-House Livestock Project: In centralized ventilation systems serving several pig houses, multiple NH3 monitoring points can be integrated into a PLC or farm environmental management platform for centralized data collection and operational supervision.

Q: Why is a special ammonia sensor required for high-humidity air treatment?
A: Air-cleaning systems can create extremely humid conditions where condensation may affect conventional sensors. A heated measuring inlet helps maintain reliable NH3 measurement under these demanding conditions.

Q: Can the sensor operate at very high relative humidity?
A: Yes. This type of sensor is specifically designed for applications approaching 95–100% relative humidity.

Q: Where is the sensor normally installed in an air scrubber?
A: It is commonly installed on the clean-gas or outlet side after the exhaust air has passed through the filtration or scrubbing stages.

Q: Does the sensor require an external sampling pump?
A: Normally no. The sensor can be installed directly in the airstream, which simplifies the system compared with external tubing and pump-based sampling arrangements.

Q: Can inlet and outlet ammonia concentration be compared?
A: Yes. Using an NH3 sensor on the untreated-air side and a high-humidity sensor on the clean-air side allows the control system to compare ammonia concentrations before and after treatment.

Q: Can the sensor be connected to a PLC or farm controller?
A: Yes. Signal and controller integration can be configured according to project requirements. The required electrical interface should be confirmed before ordering.

Q: Can SHEWUYOU supply a complete ammonia monitoring solution?
A: Yes. Sensor quantity, monitoring locations, mounting accessories, signal interfaces and control-system integration can be configured according to livestock-house dimensions, ventilation design and air-treatment requirements.