Computing The Absolute Humidity - Kyocera KM-2530 Service Manual

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2DF

(2) Computing the absolute humidity

The humidity sensor (HUMSENS) converts the relative humidity detected by the humidity sensing element into a voltage
and sends it to the main PCB (MPCB). The main PCB (MPCB) computes the absolute humidity based on this HUMSENS
signal and the temperature (ETTH signal) detected by the external temperature thermistor (ETTH).
2-1-14
HUMPCB
ETTH
Humidity
sensing element
HUMSENS
Figure 2-1-17 Absolute humidity computation block diagram
MPCB
1
ETTH
CN16-B10
2
GND
CN16-B9
3
HUMSENS
CN16-B8
4
5 V DC
CN16-B7

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