CO2-, temperature and humidity transducer CO2TRH
for indoor installation
Sensors PG1 | Data sheet No. 14110 | Version 04-2017 |
1
|
14
•
3-way sensor. Multi-functional detection
and control of CO
2
, temperature, and
humidity.
•
Analog outputs 0 – 10 V for all 3 variables.
With additional relay output for CO
2
.
•
2.4" TFT LCD color touch display with
alarm function
•
Standard Modbus and BACnet interface.
•
For demand-based ventilation as a
function of CO
2
concentration
(recommended threshold value < 1,000 ppm).
•
Automated on-board self-calibration and
on-board diagnostics with service intervals of
longer than 5 years.
•
Latest generation infrared technology
(NDIR) for measuring carbon dioxide gas.
Technical Data
Valid from firmware V 1.11
CO
2
-Sensor:
Non-dispersive infrared technology
(NDIR) with automated baseline
correction (vers. K 70)
Sensor ranges:
CO
2
0 – 2.000 ppm
Temperature
0 – 50 °C
Relative humidity 0 – 100 %
Fault thresholds:
– Temperature:
± 1,0 °C
– CO
2
:
± 30 ppm ± 3% of the sensor reading
– RH:
±5 % RH (at 20 – 80 % RH)
Sampling cycle:
every 15 seconds
CO
2
pressure sensitivity:
+1.6% of the sensor reading per kPa
deviation from standard pressure
(100 kPa)
Service interval:
5 years (recommended
for the first inspection)
Service life:
> 15 years
Rated ambient
conditions:
Humidity: 0 – 95% RH
(non-condensing)
Storage temperature: -30 – 70 °C
Operating temperature: 0 – 50 °C
Protection type:
IP 20
Dimensions (L x W x D):
approx. 83 x 123 x 23 mm
Weight:
approx. 130 g
Power supply:
24 V DC or 24 V AC
(50 – 60 Hz) ±20 %
Power consumption:
< 0.6 W with display. max. 2 W peak
Heat-up time:
1 Min
(full specification after 15 minutes)
Response time T 1/e:
< 3 minutes
Run-in period:
> 3 weeks after startup
Screw terminals:
max. 1,5 mm²
Outputs
RS485 Bus:
Modbus or BACnet, selectable
Relay output:
closer (rated load 1 mA/5 V up to
1A/50 V AC / 24 V DC). Closes at
1,000 ppm CO
2
, hysteresis 100 ppm
(adjustable). Menu-controlled
switching between temperature or
humidity.
Analog outputs:
3 linear analog outputs
0 – 10 V DC
(R
out
< 100 Ω, R
Load
> 5 k Ω).
OUT1: 0 – 10 V DC
scaled to 0 – 2,000 ppm CO
2
OUT2: 0 – 10 V DC
scaled to 0 – 50 °C
OUT3: 0 – 10 V DC
scaled to 0 – 100 % RH
