Specifications
CO2 Sensor | Non-Dispersive Infrared Detector (NDIR) | |
Measurement Range | 02,000ppm (default) | |
Accuracy | ±60ppm + 3% of reading @22(72) | |
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(72) | |
Duct Air Velocity | 0~450m/min | |
Pressure Dependence | 0.135% of reading per mm Hg | |
Warm up time | 2 hours (first time) | |
Split CO2 sensor | 2 meter cable connection between the senor and the controller | |
Temperature & Humidity Detection&Display (optional) | Temperature | Relative Humidity |
Sensing element: | Band-gap-senor | Capacitive humidity sensor |
Measuring range | -20~60 | 0 -100%RH |
Accuracy | ±0.5 (20~40) | ±4.5%RH (25, 15%-85%RH) |
Display resolution | 0.1 | 0.1%RH |
Stability | ±0.1per year | ±1%RH per year |
General Data |
| |
Power supply | 24VAC/24VDC or 100VAC~240VAC | |
Consumption | 1.8 W max. ; 1.0 W avg. | |
LCD display | Display CO2 measurement | |
Dry contact output (optional) | 1xdry contact output for CO2 | |
Plug& play type | Just for 100VAC~240VAC power supply with European or American power plug and power connector to the CO2 generator | |
Modbus RS485 Interface (optional) | 19200bps, 15KV antistatic protection. | |
Wireless module (optional) | ZigBee 2.4G short distance wireless communication | |
Operation conditions | 0~50(32~122); 0~99%RH, non condensing | |
Storage conditions | 0~60(32~140)/ 0~80%RH | |
IP class | IP30 | |
Standard Approval | CE-Approval | |
Features
- Special used to real-time detect CO2 level in air ducts.
- NDIR infrared CO2 sensor inside with Self-Calibration and up to 15 years lifetime
- High accuracy humidity and temperature detection &display optional
- With LCD or without LCD selectable
- Providing one dry contact output with presetting the setpoint
- Modbus RS485 communication interface optional
- Wireless of ZigBee protocol optional
- Smart structure with easier wire connection through the external pipe
- Provide four types: wall mounted, duct mounted, split and plug & play
- For plug & play type, special design a photosensor inside to detect day/night and change the working mode of the CO2 generator
- For duct probe type, special the 180° rotatable fastness position of the probe can be used in two directions of air flow.
- Replaceable filter in the probe and extendable probe length
- Design the convenient and easier buttons for operation
Typical Applications
- In office and residence areas to detect CO2 level
- Ventilation control
- In BAS to detect the CO2 and the data transmittance
- For greenhouse and plant bin
- For CO2 laboratory
Demensions & Mounting 
Models Guide
TKG- CO2- A 0 C D Y –TH-PPX
A:the sensor installation type
1: wall mounted with the external adown probe sensor
2: probe duct mounted
3: split sensor with 2 meters cable connection
4: probe duct type with extended probe (209mm)
C:relay dry contact output
0: no dry contact output
1: 1xdry contact output
D:Modbus interface
0: no communication
1: Modbus RS485 interface
2: with ZigBee wireless module (will be provided in the future)
Y:power supply
C: 24VDC/VAC power supply
D: 100~240VAC power supply
-TH temperature & RH detection and display
-PPX Plug and play for wall mounting type
No “PP” indicates without plug & play installation
PPE means European standard plug
PPA means American standard plug
Wiring Diagram
