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
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0...2000 ppm
0...5000 ppm
0...10000 ppm
±(50 ppm +2% of mv)
±(50 ppm +3% of mv)
±(100 ppm +5% of mv)
0…95 % RH (non condensing)
Measuring range Relative Humiditytyp. ± 3 % RH
Accuracy Relative Humidity at 25 °C (77 °C) and 20...80% RH700…1100 mbar (10.15...15.95 psi)
Measuring range Pressuretyp. ± 2 mbar
Accuracy Pressure at 25 °C (77 °C) and 20...80% RH-40…60 °C (-40...140 °F)
Measuring range Temperaturetyp. ± 0.5 °C (± 0.9 °F)
Accuracy Temperature at 25 °C (77 °F)I²C or E2
Digital interface4.75-7.5V DC
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Datasheet | |
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EE894 Datasheet(1124.35 kb) |
Manual | |
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EE894 Handling instruction(1039.37 kb) |
Software | |
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EE-PCS Product Configuration Software(29828.69 kb) |
Support literature | |
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Utilising the E2 Interface for EE894 - AN1808-1(434.87 kb) |
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E2 interface specification(223.84 kb) |
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I²C interface specification(1252.75 kb) |