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SHT71-Humidity&Temperature Sensor

Chào bạn www9van

Hiện nay chúng tôi có con SHT 71 có thể đáp ứng được nhu cầu của bạn, để biết thêm chi tiết bạn co thể xem ở đây:
Tài liệu:www.parallax.com/dl/docs/prod/datast/shtx.pdf
hoặc vào www.google.com search "sht71".
Để mua xin liên hệ với chúng tôi, LeDuong Electronics(www.ic-vn.com), địa chỉ 56 Hoàng Hoa Thám, Tây Hồ, Hà Nội. DT: 2421882 hoặc Cường 0913074814.
Giá bán:480,000/con và 450,000 với SL>10.

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SHT71-Humidity&Temperature Sensor

Xin lỗi vì đã Spam nhưng vì có một vài bạn hỏi các thông số con này nên minh gửi một ít các đặc điểm căn bản lên cho mọi người biết, ai biết rồi thì có định hướng dùng nhé. Cám ơn bà kon.

Humidity & Temperature Sensor SHT71
The SHT71 humidity and temperature sensor is designed for demanding applications. Every sensor is individually calibrated in a precision humidity chamber and supplies a fully calibrated, digital signal for relative humidity and temperature.
Innovative CMOSens technology guarantees 100% interchangeability without recalibration and provides for attractive system cost and a very
user-friendly system.
_Relative humidity & temperature
_Dew point
_Fully calibrated
_Interchangeable without recalibration
_Digital 2-wire interface
_Excellent long-term stability
_cost-effective
Specifications
_Relative Humidity (RH)
Range: 0 to 100 % RH
Accuracy: ± 3.5 % RH (20 to 80 % RH)
Response time: = 3 sec.
Reproducibility: ± 0.1 % RH
Resolution: 0.03 % RH
Operating temperature: –40°C to 120°C
_Temperature (T)
Range: –40°C to 120°C
Accuracy: ± 0.5°C @ 25°C, ± 0.9°C (0°C – 40°C)
Response time: = 15 sec.
Reproducibility: ± 0.1°C
Resolution: 0.01°C
Electrical Data_
Power consumption: typ. 30 W
(@ 5 V, 12-bit, measure every 2 sec.)
typ. 1 W
(@ 2.4 V, 8-bit, measure every 2 min.)
_Supply voltage range: 2.4 to 5.5 V
_Input current during measurement: 0.5 mA
_Input current standby: 0.3 A
Packaging Information
_Pluggable pin-type packaging for 1.27 mm sockets
_The whole system, including packaging, is qualified

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The default measurement resolution of 14bit (temp.) and 12bit (humidity) can be reduced to 12 and 8 bit through the status register
Power Pins
The SHTxx requires a voltage supply between 2.4 and 5.5 V. After powerup the device needs 11ms to reach its “sleep” state. No commands should be sent before that time. Power supply pins (VDD, GND) may be decoupled with a 100 nF capacitor.
Serial Interface (Bidirectional 2-wire)
The serial interface of the SHTxx is optimized for sensor readout and power consumption and is not compatible with I2C interface
Serial clock input (SCK)
The SCK is used to synchronize the communication between a microcontroller and the SHTxx. Since the interface consists of fully static logic there is no minimum SCK frequency.
Serial data (DATA)
The DATA tristate pin is used to transfer data in and out of the device. DATA changes after the falling edge and is valid on the rising edge of the serial clock SCK. During transmission the DATA line must remain stable while SCK is high. To avoid signal contention the microcontroller should only drive DATA low. An external pull-up resistor (e.g. 10 k? ) is required to pull the signal
high.

[thuhang]

Mình có vài con SHT-11 . Nếu cậu thích thì có thể liên lạc số Dt : 0908 336357 . Đảm bảo giá rất cạnh tranh . hàng chưa khui .