CTHR CO2, humidity and temperature transmitter

Transmitter for wall mounting with or without display

CTHR Wall mounting CO2, humidity and temperature transmitter

CTHR is a transmitter with automatic calibration combining measurement of CO2 level, temperature and relative humidity in the same casing. The sensors are mounted in the cover-part of the casing. The cover is easy to detach from the back by means of snap-in grips and detachable terminals. This makes mounting easier. Furthermore, no cables have to be disconnected, simplifying service and replacement. The transmitters are intended for wall mounting in HVAC systems.

The transmitters have automatic calibration, which means that manual recalibration is not required during the life¬time of the transmitter.

Transmitters are also available with Modbus communication.

Main features:

Temperature sensor, PT1000 class DIN B
Good long-term stability
RCBC algorithm
With or without display
With or without Modbus

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Protection class	IP30
Supply voltage	24 V AC
Measuring range	0...2000ppm ; 0...50°C ; 10...90% RH
Mounting	Wall
Manufacturer	Regin

Name	Output (temperature)	Output (humidity)	Output (CO2)	Temperature range	Humidity range	Range CO2	Display
CTHR	PT1000	0…10 V DC	0…10 V DC	0…50˚C	10…90 % RH	0…2000 ppm	NO
Room mounting protection class IP30 accuracy (temperature) ±0.3˚C accuracy (humidity) ±3% na 20˚C accuracy (CO2) < ± (50 ppm + 2 % of the measured value) supply voltage 24 V AC/DC (22…26 V AC / 15…35 V DC)
CTHR-D	PT1000	0…10 V DC	0…10 V DC	0…50˚C	10…90 % RH	0…2000 ppm	YES
Room mounting protection class IP30 accuracy (temperature) ±0.3˚C accuracy (humidity) ±3% na 20˚C accuracy (CO2) < ± (50 ppm + 2 % of the measured value) supply voltage 24 V AC/DC (22…26 V AC / 15…35 V DC)
CTHRA	0…10 V DC	0…10 V DC	0…10 V DC	0…50˚C	10…90 % RH	0…2000 ppm	NO
Room mounting protection class IP30 accuracy (temperature) ±0.4˚C accuracy (humidity) ±3% na 20˚C accuracy (CO2) < ± (50 ppm + 2 % of the measured value) supply voltage 24 V AC/DC (22…26 V AC / 15…35 V DC)
CTHRA-D	0…10 V DC	0…10 V DC	0…10 V DC	0…50˚C	10…90 % RH	0…2000 ppm	YES
Room mounting protection class IP30 accuracy (temperature) ±0.4˚C accuracy (humidity) ±3% na 20˚C accuracy (CO2) < ± (50 ppm + 2 % of the measured value) supply voltage 24 V AC/DC (22…26 V AC / 15…35 V DC)
CTHRC	Modbus	Modbus	Modbus	0…50˚C	10…90 % RH	0…2000 ppm	NO
Room mounting protection class IP30 accuracy (temperature) ±0.2˚C accuracy (humidity) ± 3% na 20˚C accuracy (CO2) < ± (50 ppm + 2 % of the measured value) (25˚C) supply voltage 24 V AC/DC (22…26 V AC / 15…35 V DC)
CTHRC-D	Modbus	Modbus	Modbus	0…50˚C	10…90 % RH	0…2000 ppm	YES
Room mounting protection class IP30 accuracy (temperature) ±0.2˚C accuracy (humidity) ± 3% na 20˚C accuracy (CO2) < ± (50 ppm + 2 % of the measured value) (25˚C) supply voltage 24 V AC/DC (22…26 V AC / 15…35 V DC)