The EE894 is a digital sensor module designed to measure carbon dioxide (CO,ÇÇ), temperature, relative humidity (RH), and ambient pressure (p). It utilizes dual wavelength NDIR technology for CO,ÇÇ measurement, which provides high accuracy and long-term stability while being resistant to contamination. The module features temperature and pressure compensation to enhance measurement accuracy across varying environmental conditions. The CO,ÇÇ measurement range is available in three options: 0-2,000 ppm, 0-5,000 ppm, and 0-10,000 ppm, with corresponding accuracy specifications. The device supports I¬=C and E2 digital interfaces for data output, and it can be configured for different sampling intervals, allowing for reduced power consumption, making it suitable for battery-operated applications. With a compact design and multiple connection options, including contact pins and pads, the EE894 is well-suited for applications in demand-controlled ventilation, building automation, data logging, and wireless transmission. The calibration interval is recommended to be greater than five years under normal operating conditions.
The digital module EE894 measures carbon dioxide (CO2), relative humidity (RH), temperature (T) and ambient pressure (p). Temperature and pressure compensation ensures high CO2 measurement accuracy under changing environmental conditions. Very small dimension and the I2C or E2 interface facilitate the design-in.
The dual wavelength NDIR technology with auto-calibration is particularly long-term stable and insensitive to contamination. A multiple point CO2 and T factory adjustment 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 readings.
The measured data, with a range of up to 1% CO2, is available on the I²C or the E2 digital interface. Small dimensions and electrical connection via contact pins, edge card socket or pads 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 p measurement. 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
| E+E Elektronik | |
|---|---|
| Product Category | Gas Sensors |
| Product Number | EE894 |
| Product Name | CO2 Module Measures Four Climate Parameters |
| Sensor Technology | Infrared |
| Measurement Type | Trace |
| Gas Types | CO2; (0-2000 / 0-5000 / 0-10000 ppm) |
| Features | Temperature |
