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- Contact Person : Ms. Tian Maggie
- Company Name : Beijing Tongdy Control Technology Co., Ltd.
- Tel : 86-10-58731276,58731277,58731278
- Fax : 86-10-58731275
- Address : Beijing,Beijing,3-3-5F, IN-DO Mansion, No.Jia 48 ZhiChun Road Haidian District, Beijing. China
- Country/Region : China
- Zip : 100098
CO2 transmitter
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CO2 Sensor | Non-Dispersive Infrared Detector (NDIR) | |
Measurement Range | 0~2000ppm (default) 0~5000ppm selectable | |
Accuracy | ±40ppm + 3% of reading @22°C(72°F) | |
Stability | <2% of full scale over the life of the sensor | |
Calibration | Self-calibration system | |
Response Time | <5 minutes for 90% step change at low duct speed | |
Non-linearity | <1% of full scale @22°C(72°F) | |
Duct Air Velocity | 0~450m/min | |
Pressure Dependence | 0.135% of reading per mm Hg | |
Temperature Dependence | 0.2% of full scale per ºC | |
Warm up time | 2 hours (first time) 2 minutes (operation) | |
Temperature & Humidity Sensor | Temperature | Relative Humidity |
Sensing element: | Band-gap-senor | Capacitive humidity sensor |
Measuring range | -20°C~60°C | 0 -100%RH |
Accuracy | ±0.4°C (25°C) | ±3%RH (25°C, 40%-60%RH) |
Display resolution | 0.1°C | 0.1%RH |
Stability | ±0.1°Cper year | ±1%RH per year |
General Data |
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Power supply | 24VAC/24VDC | |
Consumption | 1.8 W max. ; 1.0 W avg. | |
LCD display | White backlit LCD display CO2 measurement or CO2 + temperature& humidity measurements | |
Analog output | 1x0~10VDC or 4~20mA output for CO2 3x 0~10VDC or 4~20mA outputs for CO2+ Temperature +RH The voltage output or current output can be selectable by jumpers | |
Modbus RS485 Interface | 19200bps, 15KV antistatic protection. | |
Operation conditions | -0°C~50°C(32~122°F); 0~95%RH, non condensing | |
Storage conditions | -20~70°C(-40~158°F) | |
Net weight | 320g | |
IP class | IP54 for without LCD model IP40 for with LCD model | |
Standard Approval | CE-Approval | |
1.CO2 transmitter: real-time detect CO2 level of indoor environment
2.NDIR infrared CO2 sensor with Self-Calibration and up to 15 years lifetime
3.Humidity and temperature detection optional
4.Combined temperature and humidity sensor provide the highest accuracy in full range
5.Wall mounting with the external sensor probe with the higher accuracy of measurements
6.Backlit LCD display option can display CO2 measurement and temperature+ RH measurements
7.Providing one or three 0~10VDC or 4~20mA analog outputs
8.Modbus RS485 communication interface makes usage and test more convenient
9.Smart structure with the simple installation and wiring
10.CE-Approval
CO2 transmitter
