MQ-137 NH3 ammonia gas sensor, 10-300ppm

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The MQ-137 ammonia gas sensor has high sensitivity to ammonia and it was able to detect concentration from 10 to 300ppm
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Availability: In stock

Excl. Tax: €43.02 Incl. Tax: €52.48

Product Description

Details

Sensitive material of MQ-137 gas sensor is SnO2, which with lower conductivity in clean air. When the ammonia gas (NH3) exists, the sensor’s conductivity gets higher along with the gas concentration rising.
 
Technical specification:
Detection range: 10~300ppm
Working voltage: 5.0V±0.2V AC or DC

Model No.
MQ-137
Sensor Type
Semiconductor
Standard Encapsulation
Stainless steel
Detection Gas
Ammonia
Concentration
10-300PPM (Ammonia)
Circuit
Loop Voltage
Vc
≤24V DC

Heater Voltage
VH
5.0V±0.2V AC or DC

Load Resistance
RL
Adjustable
Character
Heater Resistance
RH
31Ω±3Ω(Room Tem.)

Heater consumption
PH
≤900mW

Sensing Resistance
Rs
2KΩ-15KΩ(in 50ppm NH3)

Sensitivity
S
Rs(in air)/Rs(in 5000ppm CH4)≥5

Slope
α
≤0.6 (R100ppm/R50ppm NH3)
Condition
Tem. Humidity
20℃±2℃; 65%±5%RH

Standard test circuit
Vc:5.0V±0.1V
 VH: 5.0V±0.1V

Preheat time
Over 48 hours



Tensione del riscaldatore
VH
5.0V±0.2V AC or DC

Resistenza di carico
RL
Regolabile
Character
Resistenza del riscaldatore
RH
31Ω±3Ω(Room Temp.)

Assorbimento del riscaldatore
PH
≤900mW

Resistenza di rilevamento
Rs
2KΩ-20KΩ(in 50ppm SO2)

Sensibilità
S
Rs(in air)/Rs(in 50ppm NH3)≥3

Pendenza
α
≤0.6 (R100ppm/R50ppm H2S)
Condizioni
Temperatura/Umidità
20℃±2℃; 65%±5%RH

Standard test circuit
Vc:5.0V±0.1V
 VH: 5.0V±0.1V

Tempo di pre-riscaldamento
Over 48 hours

Additional Information

Additional Information

SKU P16092245
Output Type Analogic
Input Voltage 5 V
Terminals THT
Target PCB

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