Carbon Dioxide Meter with PID Output
FEATURES
Design for real time measuring ambiance carbon dioxide and temperature and relative humidity
NDIR infrared CO2 sensor inside with special Self Calibration. It makes CO2 measurement more accurate and more reliable.
Up to 10 years lifetime of CO2 sensor
Provide one or two 0~10VDC/4~20mA linear output for CO2 or CO2/temp.
PID control output can be selected for CO2 measurement
One passive relay output is optional. It can control a fan or a CO2 generator. The control mode is easily selected.
The 3-color LED indicates three CO2 level ranges
Optional OLED screen displays CO2/Temp/RH measurements
Buzzer alarm for the relay control models
Modbus RS485 communication interface
24VAC/VDC power supply
CE-approval
TECHNICAL SPECIFICATIONS
| General Data | |
| Power supply | 24VAC/VDC± 10% |
| Consumption | 3.5 W max. ; 2.0 W avg. |
| Analog outputs | One 0~10VDC/4~20mA for CO2 measurement |
| Two 0~10VDC/4~20mA for CO2/Temperature measurements PID control output is selectable | ||
| Relay output | One passive relay output (max.5A) with the control mode selection (control a fan or a CO2 generator) | |
| RS485 interface | Modbus protocol, 4800/9600(default)/19200/38400bps; 15KV antistatic protection, independent base address. | |
|
LED light selectable |
3-color mode (default) Green: ≤1000ppm Orange: 1000~1400ppm Red: >1400ppmRed flashing: CO2 sensor faulty | Working light mode Green on: workingRed flashing: CO2 sensor faulty |
| OLED Display | Display CO2 or CO2/temp. or CO2/Temp./ RH measurements | |
| Operation condition | 0~50℃; 0~95%RH, non condensing | |
| Storage condition | -10~60℃, 0~80%RH | |
| Net Weight / Dimensions | 190g /117mm(H)×95mm(W)×36mm(D) | |
| Installation | wall mounting with 65mm×65mm or 2”×4”wire box | |
| Housing and IP class | PC/ABS fireproof plastic material, protection class: IP30 | |
| Standard | CE approval | |
| Carbon Dioxide | ||
| Sensing element | Non-Dispersive Infrared Detector (NDIR) | |
| CO2 measuring range | 0~2000ppm (default)0~5000ppm (selected in the advanced setup) | |
| CO2 Accuracy | ±60ppm + 3% of reading or ±75ppm (whichever is greater) | |
| Temperature dependence | 0.2% FS per℃ | |
| Stability | <2% of FS over life of sensor (10 year typical) | |
| Pressure dependence | 0.13% of reading per mm Hg | |
| Calibration | ABC Logic Self Calibration Algorithm | |
| Response time | <2 minutes for 90% step change typical | |
| Signal update | Every 2 seconds | |
| Warm-up time | 2 hours (first time) / 2 minutes (operation) | |
| Temperature and RH (option) | ||
| Temperature sensor (selectable) | Digital integrated temperature and humidity sensor SHT, or NTC thermistor | |
| Measuring range | -20~60℃/-4~140F (default) 0~100%RH | |
| Accuracy | Temp.: <±0.5℃@25℃ RH: <±3.0%RH （20%~80%RH） | |
DIMENSIONS
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