NH3 ammonia sensor

for air quality monitoringppm level4-20 mA

Overview
This sensor combines long-term reliability with low measurement drift. It detects ammonia and provides accurate concentration readings. Intended for air quality monitoring and personnel protection, it is suitable for sensitive and demanding environments.

Functional summary

• NH3 transmitter for ambient air quality monitoring
• Measures ammonia concentration in ppm (0 - 50 ppm)
• Complies with the ATEX Directive and applicable toxicological standards
• Compatible with Nano SPY U and LoRa SPY U data loggers

Safety and variants
The transmitter provides compliant and secure monitoring of atmospheres exposed to ammonia hazards thanks to ATEX compatibility. Multiple versions are available, including a model for measuring oxygen in % vol in ambient air.

Technical characteristics / specifications

• Measuring range: 0 - 50 ppm
• Humidity: 0-90% RH non-condensing
• Wiring: 2 shielded wires, 0.5 to 2.5 mm², M20 thread
• Housing: A356 marine-grade aluminium alloy with polyester coating
• Mounting: Wall-mounted
• Power supply: 8-30 VDC
• Output: 4-20 mA
• Weight: 1 kg
• Response time: T90 < 30 s
• Operating temperature: -20 to +50 °C
• Dimensions: 156 x 166 x 111 mm
• Ingress protection: IP65