Transmitter capable of measuring relative humidity (RH) and temperature (T) with a duct-insertable CO2 meter, featuring a 5-year accuracy guarantee (no calibration required for 5 years).
● No calibration required for 5 years ● Optical sensor recommended by the Ministry of Economy, Trade and Industry ● Long-term stability achieved through automatic CO2 calibration function ● Temperature compensation function ● Excellent resistance to contamination ● Installation in hard-to-maintain locations such as high altitudes ● No calibration required for 5 years ■ The EE850 is a CO2 concentration measuring device suitable for applications such as ventilation systems and building automation. ■ To compensate for aging degradation, it employs E+E's unique dual-wavelength non-dispersive infrared (NDIR) CO2 sensor, which is resistant to contamination and provides stable long-term measurements. ■ The humidity detection component is protected from dust, dirt, and corrosion by E+E's unique sensor coating. ■ In addition to measuring carbon dioxide, relative humidity, and temperature data, the dew point calculated through temperature and humidity conversion can be output via analog output (voltage/current selectable), and a passive temperature sensor with a 2-wire connection can also be selected as an additional option. For more details, please download the catalog or contact us.
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basic information
Measurement Principle: Two-Wavelength Non-Dispersive Infrared Method (NDIR) <CO2> Measurement Range: 0-2000/0-5000/0-10000 ppm Accuracy: 0-2000 ppm <±(50 ppm + reading 2%) 0-5000 ppm <±(50 ppm + reading 3%) 0-10000 ppm <±(100 ppm + reading 5%) Output: 0 – 5 / 0 – 10 V -1 mA < IL < 1 mA 4 – 20 mA RL < 500 Ω RS485 (up to 32 devices can be connected per bus) Modbus RTU or BACnet MS/TP <Temperature> Measurement Range: -20 to +60℃ Output: 0 – 5 / 0 – 10 V -1 mA < IL < 1 mA <Humidity> Measurement Range: 0 to 95 %RH Output: 0 – 5 / 0 – 10 V -1 mA < IL < 1 mA <Common Specifications> Power Supply: 15 to 35 VDC or 24 VAC ±20%
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Applications/Examples of results
● Building air conditioning ● Ventilation equipment ● Air conditioning and process management among others
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We introduce various measuring instruments and devices related to moisture management, including the domestic capacitive dew point meter TK-100 series, mirror-type dew point meters, oxygen concentration meters, humidifiers, and moisture meters for corrosive gases. By organically combining these, as well as through piping, line creation, and unitization, we provide customized products and respond quickly to complex issues.