★Railway standard compliant★【No calibration needed for CO2 sensor for 5 years】Achieves the highest CO2 measurement accuracy regardless of temperature, altitude, or weather conditions.
● Calibration at multiple temperature points achieves accurate measurements across the entire temperature range. ● The detection principle recommended by the Ministry of Economy, Trade and Industry is an optical sensor. ● Pressure and temperature correction functions. ● Available in wall-mounted and duct-insert types. ■ The EE8915 can reliably measure CO2 concentration under harsh conditions and complies with relevant railway standards. ■ Railway Standards EN50155:2017 - Electronic equipment used in railway vehicles EN50121-1:2017 - Electromagnetic compatibility - General EN50121-3-2:2016 - Electromagnetic compatibility - Railway vehicles EN61373:2010 - Equipment for railway vehicles - Shock and vibration testing EN50125-1 - Environmental conditions for equipment - Equipment on railway vehicles EN45545-2 - Fire behavior requirements for materials used in railway vehicles EN50306 - Cables for railway vehicles with special fire resistance performance
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Measurement Principle: Two-Wavelength Non-Dispersive Infrared Method (NDIR) Measurement Range: 0-2000/0-5000/0-10000 ppm Accuracy: 0-2000 ppm <±(50 ppm + 2% of reading) 0-5000 ppm <±(50 ppm + 3% of reading) 0-10000 ppm <±(100 ppm + 5% of reading) Response Time (63% response): Duct-mounted type: under 100 seconds (at air velocity of 3 m/s) Wall-mounted type: under 160 seconds Temperature Influence: ±(1 + CO2 concentration/1000) ppm/°C (at -20 to +45 °C) Residual Pressure Influence: Reading 0.014% / hPa (at -20 to +45 °C) Measurement Interval: Approximately once every 15 seconds Output: 0-5 V / 0-10 V -1 mA < IL < 1 mA 0-20 mA / 4-20 mA RL < 500 Ω Supply Voltage: 10-35 V DC (Nominal voltage Un = 24 V DC / according to EN50155) Current Consumption: Approximately 10 mA + output current Maximum 105 mA for 0.3 seconds
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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.