Temperatuur en Luchtvochtigheid sensor I2C SHT20

Beschrijving

Informatie (ENG):

SHT20, the new humidity and temperature sensor of Sensirion is about to set new standards in terms of size and intelligence: Embedded in a reflow solderable Dual Flat No leads (DFN) package of 3 x 3mm foot print and 1.1mm height it provides calibrated, linearized signals in digital, true I2C format. With a completely new designed CMOSens® chip, a reworked capacitive type humidity sensor and a standard band gap temperature sensor the performance has been lifted even beyond the outstanding level of the previous sensor generation (SHT1x and SHT7x). For example, measures have been taken to stabilize the behavior at high humidity levels. Every sensor is individually calibrated and tested. Lot identification is printed on the sensor and an electronic identification code is stored on the chip – which can be read out by command. Furthermore, the resolution of SHT20 can be changed by command (8/12bit up to 12/14bit for RH/T), low battery can be detected and a checksum helps to improve communication reliability. With m  e improvements and the miniaturization of the sensor the performance-to-price ratio has been improved – and eventually, any device should benefit from the cutting edge energy saving operation mode. For testing SHT20 a new evaluation Kit EK-H4 is available.

Specifications:
1. Supply voltage: 1.5V-3.6V
2. Humidity measuring range: 0-100%RH
3. Temperature range: -40 graden celcius to 105 graden celcius
4. Maximum power consumption: 2.7uW communication: I2C
5. Humidity accuracy range: 10% RH to 95% RH
6. Humidity Hysteresis: ±1% RH
7. Measurement time: 50ms
8. The annual shift: -0.5% RH / year
9. Response time: 5s
10. Accuracy:
HTU20D T: +/-0.3 graden celcius
RH: +/- 4% RH
HTU21D T: +/-0.3 graden celcius
RH: +/- 2% RH
11. Storage temperature: -40 graden celcius ~ 125 graden celcius
12. Working humidity range: 0-100% RH
13. Working temperature range: -40 graden celcius ~ 105 graden celcius