CO2 Sensor CO2-2

Application

  • The sensor is designed for indoor carbon dioxide concentration measurement and respective air capacity regulation through the control output signal to the fan.
  • Air capacity control based on CO2 concentration is an efficient energy saving solution.

Design and compatibility 

  • The sensor has two separate outputs: a normally opened dry relay contact and an analogue output 0…10 V (this output is adjustable for 2…10 V/0…20 mA/4…20 mA).
  • The relay output is used to turn the fan on/off depending on indoor CO– concentration and the analogue output is used for smooth fan speed control for a fan with EC-motor or a fan with extra speed controller with 0-10 V input, refer to RS…TA or VFED.
  • In case of smooth fan speed control the fan speed varies proportionally to carbon dioxide emissions.
  • The relay and analogue outputs make the sensor compatible with any ventilation system.
  • The integrated self-calibration system ensures reliable sensor operation during the sensor service life.

Order item, 6-8 weeks

Description

MODIFICATIONS
  • The sensor is available in two modifications: CO2-1 and CO2-2.
  • The CO2-1 model incorporates LED lights for CO2 concentration and operation buttons indicating the level of three operation modes: 1 – on, 2 – off, 3 – operation by CO2 concentration.
  • The button is used to switch the ventilation system on or off when CO2 – based ventilation control is not required.
  • The CO2-2 model has no LED-lights and on/off button.
  • The model is applied for premises requiring permanent ventilation, i.e. at school classes and other public premises.
ACCESSORIES
  • Power supply unit is applied for connection of the sensor to 220 V (model TRF-220/24-1,6) or 120 V (TRF-120/24-1,6) AC power mains.
MOUNTING AND POWER SUPPLY
  • The sensor is designed for wall surface mounting.
  • 24 VAC low current power supply.
  • If power supply 24 V is not available, connect the TRF plug that is offered as an accessory.
TRF 24AC 450 Application The sensor is designed for indoor carbon dioxide concentration measurement and respective air capacity regulation through the control output signal to the fan. Air capacity control based on CO2 concentration is an efficient energy saving solution. Design and compatibility  The sensor has two separate outputs: a normally opened dry relay contact and an analogue output 0…10 V (this output is adjustable for 2…10 V/0…20 mA/4…20 mA). The relay output is used to turn the fan on/off depending on indoor CO2 - concentration and the analogue output is used for smooth fan speed control for a fan with EC-motor or a fan with extra speed controller with 0-10 V input, refer to RS...TA or VFED. In case of smooth fan speed control the fan speed varies proportionally to carbon dioxide emissions. The relay and analogue outputs make the sensor compatible with any ventilation system. The integrated self-calibration system ensures reliable sensor operation during the sensor service life. Order item, 6-8 weeks

CHARACTERISTICS

Parameter CO2-2 Measurement unit
Power supply/ power consumption Power supply/ power consumption W
Gas detection analyzer Gas detection analyzer
CO2 detection range CO2 detection range
Accuracy at 25°С (77°F), 2000 ppm Accuracy at 25°С (77°F), 2000 ppm
Response time Response time max. 2 min
Warm up time for each turning-on Warm up time for each turning-on 2 hours (first time), 2 minutes (operation)
Analogue output Analogue output 0-10 VDC (factory setting), 4-20 mA (selectable by jumpers)
On/Off output On/Off output 1X2A switch load. Four set points selectable by jumpers
Operating conditions/ storage recommendations Operating conditions/ storage recommendations 0–50 °C; 0–95 % RH non condensing/0–50 °C
Net weight/ Dimensions Net weight/ Dimensions 0.120 kg/100 mm х 80 mm х 30 mm kg
Mounting outdoor mounting

Wiring Plan

CO2 shema 700 en Application The sensor is designed for indoor carbon dioxide concentration measurement and respective air capacity regulation through the control output signal to the fan. Air capacity control based on CO2 concentration is an efficient energy saving solution. Design and compatibility  The sensor has two separate outputs: a normally opened dry relay contact and an analogue output 0…10 V (this output is adjustable for 2…10 V/0…20 mA/4…20 mA). The relay output is used to turn the fan on/off depending on indoor CO2 - concentration and the analogue output is used for smooth fan speed control for a fan with EC-motor or a fan with extra speed controller with 0-10 V input, refer to RS...TA or VFED. In case of smooth fan speed control the fan speed varies proportionally to carbon dioxide emissions. The relay and analogue outputs make the sensor compatible with any ventilation system. The integrated self-calibration system ensures reliable sensor operation during the sensor service life. Order item, 6-8 weeks