חיישן  אמוניה NH3    יציאה 4-20mA

Analog parameter meaning
Current signal output conversion calculation
For example, the range is 0~100ppm, and the output is 4~20mA.

When the output signal is 12mA, calculate the current ammonia concentration.

The span of this ammonia range is 100ppm, which is expressed by a 16mA current signal, 100ppm/16mA=6.25ppm/mA, that is, a current of 1mA represents an ammonia concentration change of 6.25ppm, and the measured value is 12mA 4mA=8mA, 8 mA*6.25ppm/mA =50ppm, the current ammonia concentration is 50ppm.

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