MQ137 NH3 Ammonia Gas Sensor Module

Module Features

size: 35mm X40mm X28mm L * W * H
main components: ammonia gas sensor
the working voltage: DC 5V

Characteristics

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

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