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RHT03 Datasheet Preview

RHT03 Datasheet

Digital relative humidity & temperature sensor

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Your specialist in innovating humidity & temperature sensors
Digital relative humidity & temperature sensor RHT03
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
*4 pins packaged and fully interchangeable
2. Description:
RHT03 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 RHT03 to be suited in all kinds of
harsh application occasions. Single-row packaged with four pins, making the connection very convenient.
3. Technical Specification:
Model
Power supply
Output signal
Sensing element
Operating range
Accuracy
Resolution or sensitivity
Repeatability
RHT03
3.3-6V DC
digital signal via MaxDetect 1-wire bus
Polymer humidity capacitor
humidity 0-100%RH;
temperature -40~80Celsius
humidity +-2%RH(Max +-5%RH); temperature +-0.5Celsius
humidity 0.1%RH;
temperature 0.1Celsius
humidity +-1%RH;
temperature +-0.2Celsius
-1-
MaxDetect Technology Co., Ltd.
-----------------------------------------
Thomas Liu (Sales Manager)
Email: thomasliu198518@yahoo.com.cn , sales@humiditycn.com
http://www.humiditycn.com




MaxDetect

RHT03 Datasheet Preview

RHT03 Datasheet

Digital relative humidity & temperature sensor

No Preview Available !

Your specialist in innovating humidity & temperature sensors
Humidity hysteresis
Long-term Stability
Interchangeability
+-0.3%RH
+-0.5%RH/year
fully interchangeable
4. Dimensions: (unit----mm)
5. Electrical connection diagram:
6. Operating specifications:
(1) Power and Pins
Power's voltage should be 3.3-6V 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) Communication and signal
MaxDetect 1-wire bus is used for communication between MCU and RHT03. ( MaxDetect 1-wire bus is
specially designed by MaxDetect Technology Co., Ltd. , it's different from Maxim/Dallas 1-wire bus, so it's
incompatible with Dallas 1-wire bus.)
Illustration of MaxDetect 1-wire bus:
Data is comprised of integral and decimal part, the following is the formula for data.
DATA=8 bit integral RH data+8 bit decimal RH data+8 bit integral T data+8 bit decimal T data+8 bit check-sum
-2-
MaxDetect Technology Co., Ltd.
-----------------------------------------
Thomas Liu (Sales Manager)
Email: thomasliu198518@yahoo.com.cn , sales@humiditycn.com
http://www.humiditycn.com


Part Number RHT03
Description Digital relative humidity & temperature sensor
Maker MaxDetect
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RHT03 Datasheet PDF






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