High reputation Whole Home Air Filtration System - Popular carbon dioxide monitor in wall mounting or desktop for schools and offices – Tongdy
High reputation Whole Home Air Filtration System - Popular carbon dioxide monitor in wall mounting or desktop for schools and offices – Tongdy Detail:
♦ Real time monitoring room carbon dioxide
♦ NDIR infrared CO2 sensor inside with special Self Calibration. It makes the CO2 measurement more accurate and more reliable.
♦ More than 10 years lifetime of CO2 sensor
♦ Temperature and humidity monitoring
♦ Three-color (Green/Yellow/ Red) LCD backlight indicates ventilation level -optimal/moderate/poor based on the CO2 measurements
♦ Buzzer alarm available/disable selected
♦ Optional display 24h average and max. CO2
♦ Provide optional 1xrelay output to control a ventilator
♦ Provide optional Modbus RS485 communication
♦ Touch button for easy operation
♦ 24VAC/VDC or 100~240V or USB 5V power supply
♦ wall mounting or desktop placement available
♦ High quality with the excellent performance, best choice for schools and offices
♦ CE-approval
| Power supply | 100~240VAC or 24VAC/VDC wire connecting USB 5V (>1A for USB adaptor) 24V with an adaptor |
| Consumption | 3.5 W max. ; 2.5 W avg |
| Gas detected | Carbon Dioxide (CO2) |
| Sensing element | Non-Dispersive Infrared Detector (NDIR) |
| Accuracy@25℃(77℉) | ±50ppm + 3% of reading |
| Stability | <2% of FS over life of sensor (15 yr typical) |
| Calibration interval | ABC Logic Self Calibration Algorithm |
| CO2 sensor life | 15 years |
| Response Time | <2 minutes for 90% step change |
| Signal update | Every 2 seconds |
| Warm up time | <3 minutes (operation) |
| CO2 measuring range | 0～5,000ppm |
| CO2 Display resolution | 1ppm |
| 3-color backlight for CO2 range | Green : <1000ppm Yellow: 1001~1400ppm Red: >1400ppm |
| LCD Display | Real time CO2, Temp &RH Extra 24h average/max/min CO2 (optional) |
| Temperature measuring range | -20～60℃(-4～140℉) |
| Humidity measuring range | 0～99%RH |
| Relay output (optional) | One relay output with rated switching current: 3A, resistance load |
| Operation conditions | -20~60℃(32~122℉); 0~95%RH, non condensing |
| Storage conditions | 0~50℃(14~140℉), 5~70%RH |
| Dimensions/ Weight | 130mm(H)×85mm(W)×36.5mm(D) / 200g |
| Housing and IP class | PC/ABS fireproof plastic material, protection class: IP30 |
| Installation | Wall mounting (65mm×65mm or 2”×4”wire box) Desktop placement |
| Standard | CE-Approval |
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We stick with the theory of "quality first, company first, steady improvement and innovation to satisfy the customers" for the management and "zero defect, zero complaints" as the quality objective. To perfect our provider, we deliver the items together with the fantastic good quality at the reasonable value for High reputation Whole Home Air Filtration System - Popular carbon dioxide monitor in wall mounting or desktop for schools and offices – Tongdy , The product will supply to all over the world, such as: Paraguay, Angola, Malaysia, Our products are produced with the best raw materials. Every moment, we constantly improve the production programme. In order to ensure better quality and service, we have been focusing on the production process. We have got high praise by partner. We are looking forward to establishing business relationship with you.
By Eunice from Lyon - 2018.02.08 16:45
The factory technical staff gave us a lot of good advice in the cooperation process, this is very good, we are very grateful.
By Annie from Libya - 2018.11.06 10:04
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