MQ-137 gas sensor semiconductor ammonia sensor moduleQualitative testing upgraded version
Product characteristics:
Size: 35mm X40mm X28mm long * width * high
Two. Main components: ammonia gas sensor
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Three, working voltage: DC 5V
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Four. Characteristics
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1, module with level signal output, with alarm signal indicator.
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2, sensor module with analog signal output, voltage range: 0-5V;
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3, level signal output low level effective, can drive PNP transistor, also can connect microcontroller IO port;
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4, the analog output voltage increases with the increase of concentration, the higher the concentration, the higher the voltage.
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5. It has high sensitivity to ammonia, trimethylamine and ethanolamine gas.
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6. It has long service life and reliable stability.
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7, preheating has fast response recovery characteristics.
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8, with installation holes, convenient fixed installation;
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9, the probe can be plugged out for easy trial.
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10, module with temperature compensation function, adaptability is more reliable.
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Sensor parameters:
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1, heating voltage: 5± 0.2V (AC· DC)
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2, working current: 180mA
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3, the circuit voltage is DC5V (maximum DC 24V).
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4, load resistor: 10K (adjustable)
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5, detection concentration range: 5-500ppm
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6, clean air voltage: ≤ 1.5V
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7, sensitivity: ≥ 300
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8, response time: ≤ 1S (preheating for 3-5 minutes, theoretical warm-up time 48 hours)
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9, reply time: ≤ 30S
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10, component power consumption: ≤ 0.9W
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11, working temperature: -10~50 C (nominal temperature 20 C)
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12, working humidity: 9 thousand and 500 RH (nominal humidity 6 thousand and 500 RH)
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13, service life: 5 years.
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14, size: 35mm× 40mm× 28mm
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15, weight size: 15g (approx.)
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Five, application:
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Mainly used for qualitative detection, suitable for household, industrial environment, portable gas detection equipment, suitable for detection of ammonia gas, sensor gas sensor concentration range: 5 to 500 ppm, see the information for details;
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Provide sensor product specification
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Shooting in kind:
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Antistatic packaging:
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