HTU21D 溫濕度感測器 替代SHT-21

商品說明

HTU21D 溫濕度感測器 HTU21D 感測器模組 產品介紹

基於法國Humirel 公司高性能的濕度感應元件製成，新一代HTU21D 溫度和濕度傳感器在尺寸與智能方面建立了新的標準：它嵌入了適於回流焊的雙列扁平無引腳DFN 封裝，底面3x3mm ，高度1.1mm 。傳感器輸出經過標定的數字信號，標準I2C 格式。多樣化的輸出方式，寬的工作電壓範圍，同時具有很高的溫度精度和濕度精度。HTU21 系列模塊專為低功耗小體積應用設計，具有良好的品質、快的響應速度、抗干擾能力強、性價比高等優點，微小的體積（3x3mm ）、極低的功耗。

提供 Arduino 範例與函數庫下載

傳感器重要參數：

• 供電電壓：1.5V—3.6
• 濕度測量範圍：0—100%RH
• 溫度測量範圍:-40℃—105℃
• 最大消耗功率:2.7uW
• 通信方式:I2C
• 濕度精度範圍（10%RH to 95%RH）:HTU21D±2%RH
• 濕度遲滯：±1%RH
• 測量時間：50ms
• 年漂移量：-0.5%RH/year
• 響應時間：5 s

同時HTU21D 可以和瑞士的SHT20 、SHT21 實現完全兼容，硬件管腳上可以實現Pin to Pin ，無需修改電路板。軟件程序方面也和瑞士的SHT20 、SHT21 相同，可以實現兼容替換，無需做出任何修改。有著很好的價格優勢，極具性價比. HTU21D超小體積的溫濕度一體數字輸出模塊是一款性能優良的產品。同時，HTU21D在價格、性能、功耗等方面都有很大優勢。

The HTU21D(F) is a new digital humidity sensor with temperature output by MEAS. Setting new standards in terms of size and intelligence, it is embedded in a reflow solderable Dual Flat No leads (DFN) package with a small 3 x 3 x 0.9 mm footprint. This sensor provides calibrated, linearized signals in digital, I²C format.

HTU21D(F) digital humidity sensors are dedicated humidity and temperature plug and play transducers for OEM applications where reliable and accurate measurements are needed. Direct interface with a micro-controller is made possible with the module for humidity and temperature digital outputs. These low power sensors are designed for high volume and cost sensitive applications with tight space constraints.

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. Low battery can be detected and a checksum improves communication reliability. The resolution of these digital humidity sensors can be changed by command (8/12bit up to 12/14bit for RH/T).
With MEAS’ improvements and miniaturization of this sensor, the performance-to-price ratio has been improved – and eventually, any device should benefit from its cutting edge energy saving operation mode.

Optional PTFE filter/membrane (F) protects HTU21D digital humidity sensors against dust and water immersion, as well as against contamination by particles. PTFE filter/membranes preserve a high response time. The white PTFE filter/membrane is directly stuck on the sensor housing.

 

Product Features

• HTU21D humidity and temperature development board
• High accuracy, low power consumption only 2.7uW, fast measuring and response time
• I2C pinout communication easy to connect with the MCU and transmit the data
• Temperature Measuring Range: -40 – 105 ¡æ, Humidity range: 0-100% RH, Humidity Accuracy: ¡À2% RH (10-95% RH)
• Working Voltage: 1.5-3.6V, Module size: 3X3mm

Product Description

The HTU21D is a low-cost, easy to use, highly accurate, digital humidity and temperature sensor can be used in weather stations or humidor control systems for environmental sensing and data logging. It is equipped with I2C communicatiion interface enable you obtaining the relative humidity readings and accurate temperature readings in a easy way.
Specifications:
-Operating voltage: 1.5-3.6V
-Temperature Measuring Range: -40 – 105 ¡æ
-Humidity range: 0-100% RH
-Humidity Accuracy: ¡À2% RH (10-95% RH)
-Humidity conversion time: 50ms
-Interface Type: I2C
Maximum Power Consumption:2.7uW
-Module size: 3X3mm

Package included:1X HTU21D Humidity Temperature Sensor Breakout Board