Self-Selected Sensors; Table 3-7 Technical Specifications Of The Ws302A1T4 Humidity/Temperature Sensor - Huawei EMU User Manual

3 Introduction to the Sensors
Working Principle of the Humidity/Temperature Sensor
The WS302A1T4 humidity/temperature sensor uses a Pt100 thermistor as the temperature
sensing component and an S108 macromolecular humidity-sensitive capacitor as the humidity
sensing component. The WS302A1T4 humidity/temperature sensor uses the SMT
craftsmanship, and it is installed on the wall.
Technical Specifications of the Humidity/Temperature Sensor
Table 3-7

Table 3-7 Technical specifications of the WS302A1T4 humidity/temperature sensor

Item
Measurement
range
Precision
Power supply
voltage
Signal output
Sample
resistance
Sensitive
components
Working
temperature
Storage
temperature
Covering
material

3.6 Self-Selected Sensors

This describes the requirements for the specifications of the self-selected sensors.
3-8
NOTE
The cable provided along with the WS302A1T4 humidity/temperature sensor is 3 m [9.84 ft] long.
lists the technical specifications of the WS302A1T4 humidity/temperature sensor.
Specification
Temperature Sensor
o
-20 C [-4
≤ ±0.3
temperature: 25
12 V DC to 24 V DC
4 mA to 20 mA (in linear response to the measurement range)
≤ 500 ohms
Pt100 thermistor
o
-20 C [-4
o
-40 C [-40
ABS engineering plastic
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Copyright © Huawei Technologies Co., Ltd.
o o o
F] to +80 C [176 F]
o o
C [32.54 F] (ambient
o o
C [77 F])
o o o
F] to +80 C [176 F]
o o o
F] to +60 C [+140
Humidity Sensor
0% RH to 100% RH
≤ ±2% RH (ambient temperature:
o o
25 C [77 F], ambient humidity:
30% RH to 80% RH)
S108 macromolecular humidity-
sensitive capacitor
F] (no condensing)
Issue 13 (2009-12-30)
EMU
User Guide