MQ137 Ammonia Detection Sensor NH3 Harmful Gas High Sensitivity

MQ137 Ammonia Detection Sensor NH3 Harmful Gas High Sensitivity

Module Features
One, size: 35mm X40mm X28mm L * W * H
Two main components: ammonia gas sensor
Third, the working voltage: DC 5V

IV characteristics
1.the module with level signal output, with alarm signal indicators;
2.the sensor module with analog signal output voltage range :0-5V;
3.active low level signal outputs can be driven PNP transistors can also be connected microcontroller IO port;
4.the analog output voltage increases with the concentration, the higher the concentration the higher the voltage;
5.to ammonia, trimethylamine, ethanolamine gas with high sensitivity;
6.with a long service life and reliable stability;
7.after preheating with fast response and recovery characteristics;
8.with mounting holes to facilitate fixed installation;
9.the probe can plug design, easy to test;
10.the module with temperature compensation function, adaptability and more reliable.

V. Application:
Mainly used for qualitative detection, for home, industrial environments, portable gas detection equipment, suitable for containing ammonia gas detection, sensor gas sensors tested concentration range: 5 to 500ppm, detailed information on;

Provide sensors product brochures,
Sensor parameters
1.the heating voltage: 5 + 0.2V (AC · DC)
2.Working current: 180mA
3.the circuit voltage: DC5V (Max DC 24V)
4.the load resistance: 10K (adjustable)
5.the test concentration range :5-500ppm
6.clean air voltage: < 1.5V
7.Sensitivity: > 3%
8.response time: < 1S (3-5 minute warm-up, the theory preheating time 48 hours)
9.response time: < 30S
10.the component power consumption: ≤ 0.9W
11.Working temperature: -10 ~ 50 oC (nominal temperature 20 oC)
12.Humidity: 95% RH (nominal humidity 65% RH)
13.life: 5 years
14.size: 35mm × 40mm × 28mm
15.weight Size: 15g (approximately)