NOTE
The cable provided along with the WS302A1T4 humidity/temperature sensor is 3 m [9.84 ft] long.
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 lists the technical specifications of the WS302A1T4 humidity/temperature sensor.
Table 3-7 Technical specifications of the WS302A1T4 humidity/temperature sensor
Item Specification
Temperature Sensor Humidity Sensor
Measurement
range
-20
o
C [-4
o
F] to +80
o
C [176
o
F]
0% RH to 100% RH
Precision
≤ ±0.3
o
C [32.54
o
F] (ambient
temperature: 25
o
C [77
o
F])
≤ ±2% RH (ambient temperature:
25
o
C [77
o
F], ambient humidity:
30% RH to 80% RH)
Power supply
voltage
12 V DC to 24 V DC
Signal output 4 mA to 20 mA (in linear response to the measurement range)
Sample
resistance
≤ 500 ohms
Sensitive
components
Pt100 thermistor S108 macromolecular humidity-
sensitive capacitor
Working
temperature
-20
o
C [-4
o
F] to +80
o
C [176
o
F]
Storage
temperature
-40
o
C [-40
o
F] to +60
o
C [+140
o
F] (no condensing)
Covering
material
ABS engineering plastic
3.6 Self-Selected Sensors
This describes the requirements for the specifications of the self-selected sensors.
3 Introduction to the Sensors
EMU
User Guide
3-8 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 13 (2009-12-30)
To Next Page
Loading...