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.

CHARACTERISTICS

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

Wiring Plan