CO2 monitor with temp.& RH with PID and relay outputs for VAV terminals

Short Description:

Design for real time measuring ambiance carbon dioxide and temperature.
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 two analog linear or PID ouput for CO2 & temp.
3 modes can be selected for temp. control, linear or PID or fix value modes
2 modes can be selected for CO2 control, linear or PID modes
End user may easily adjust the setpoint by buttons
The 3-color LED indicates three CO2 level ranges
OLED screen displays CO2/Temp measurements
RS485 communication interface with Modbus or BACnet protocol
24VAC/VDC power supply
CE-approval

Send email to us Datasheet Download<

Brief Introduction

Product Tags

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 model
RS485 communication interface with Modbus or BACnet protocol
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 or BACnet 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）