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MaxDetect |
Your specialist in innovating humidity & temperature sensors
Digital relative humidity & temperature sensor RHT02
1. Feature & Application:
*High precision
*Capacitive type
*Full range temperature compensated
*Relative humidity and temperature measurement
*Calibrated digital signal
*Outstanding long-term stability
*Extra components not needed
*Long transmission distance, up to 100 meters
*Low power consumption
2. Description:
RHT02 output calibrated digital signal. It applys exclusive digital-signal-collecting-technique and humidity
sensing technology, assuring its reliability and stability. Its sensing elements is connected with 8-bit single-chip
computer.
Every sensor of this model is temperature compensated and calibrated in accurate calibration chamber and the
calibration-coefficient is saved in type of programme in OTP memory, when the sensor is detecting, it will cite
coefficient from memory.
Small size & low consumption & long transmission distance(100m) enable RHT02 to be suited in all kinds of
harsh application occasions.
3. Technical Specification:
Model
Power supply
Output signal
Sensing element
Operating range
Accuracy
Resolution or sensitivity
RHT02
3.3-5.5V DC
digital signal via MaxDetect 1-wire bus
Polymer humidity capacitor
humidity 0-100%RH;
temperature -40~80Celsius
humidity +-3%RH(Max +-5%RH); temperature +-0.5Celsius
humidity 0.1%RH;
temperature 0.1Celsius
-1-
MaxDetect Technology Co., Ltd.
-----------------------------------------
Thomas Liu (Sales Manager)
Email: [email protected] , [email protected]
http://www.humiditycn.com
Repeatability
Humidity hysteresis
Long-term Stability
Interchangeability
Your specialist in innovating humidity & temperature sensors
humidity +-1%RH;
temperature +-0.3Celsius
+-0.5%RH
+-0.5%RH/year
fully interchangeable
4. Dimensions of RHT02's PCB board(unit----mm) and wiring diagram:
Pin Function
1 VDD----power supply , red wire
2 DATA--signal, yellow wire
3 GND, black wire
4 Null
5. Electrical connection diagram:
6. Operating specifications:
(1) Power and Pins
Power's voltage should be 3.3-5.5V DC. When power is supplied to sensor, don't send any instruction to the
sensor within one second to pass unstable status. One capacitor valued 100nF can be added between VDD and
GND for wave filtering.
-2-
MaxDetect Technology Co., Ltd.
-----------------------------------------
Thomas Liu (Sales Manager)
Email: [email protected] , [email protected]
http://www.humiditycn.com
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