★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 enables 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 compensation function. ● 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 insertion type: less than 100 seconds (at air velocity of 3 m/s) Wall-mounted type: less than 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 custom-made products and respond quickly to complex issues.
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