The EE894 module is ideal for demand controlled ventilation and building automation. It incorporates the E+E dual wavelength NDIR CO2 sensor,which compensates for ageing effects, is highly insensitive to pollution and offers outstanding long term stability. Beside CO2, the module measures also relative humidity (RH), temperature (T) and ambient pressure (p).

A multiple point CO2 and T factory adjustment procedure leads to excellent CO2 measurement accuracy over the entire T working range. The pressure compensation minimizes the impact of altitude and ambient pressure variations onto the CO2 measured data.

The measured data, with a range of up to 1% CO2, is available on the I2C or the E2 digital interface. The EE894 is available in two sizes and with electrical connection via contact pins and pads, which facilitate the design-in.

An optional kit for the E2 interface facilitates easy configuration of the module and the adjustment of the CO2, RH, T and pmeasurement. The CO2 measurement interval can be set according to the application requirements; by this the average current consumption can be reduced to 420 μA, ideal for battery-operated devices.

Typical Applications：

Demand controlled ventilation

Building automation

Data loggers and hand helds

Wireless transmitters

Key features：

Autocalibration

Outstanding long-term stability

Temperature and pressure compensated

Low power consumption

Small size

EE894二氧化碳傳感器是按需控制通風(fēng)和樓宇自動化的理想選擇。它采用了E+E雙波長NDIR CO2傳感器，可補償老化效應(yīng)，對污染高度不敏感，并提供出色的長期穩(wěn)定性。除了二氧化碳，該模塊還測量相對濕度（RH）、溫度（T）和環(huán)境壓力（p）。

多點CO2和T工廠調(diào)整程序可在整個T工作范圍內(nèi)實現(xiàn)出色的CO2測量精度。壓力補償將海拔和環(huán)境壓力變化對CO2測量數(shù)據(jù)的影響降至較低。

可在I2C或E2數(shù)字接口上獲得測量數(shù)據(jù)，其范圍高達(dá)1%CO2。EE894有兩種尺寸可供選擇，并通過觸針和焊盤進(jìn)行電氣連接，這有助于在中進(jìn)行設(shè)計。

E2接口的可選套件有助于輕松配置模塊和調(diào)整CO2、RH、T和P測量。CO2測量間隔可根據(jù)應(yīng)用要求設(shè)置；這樣，平均電流消耗可以降低到420μA，非常適合電池驅(qū)動設(shè)備。

典型應(yīng)用：

按需控制通風(fēng)

樓宇自動化

數(shù)據(jù)記錄器和手持設(shè)備

無線發(fā)射機

EE894二氧化碳傳感器主要特點：

自動校準(zhǔn)

專業(yè)的長期穩(wěn)定性

溫度和壓力補償

低功耗

小尺寸