7
G
EGQ220F931
Rev. 2021 - V35
Maintenance-free room sensor with active output, automatic calibration (fixed), in an elegant plastic housing with snap-on lid, for determining the CO2
content of the air (0...2000 ppm). The measuring transducer converts the measured values into a standard signal of 0 -10 V.
The sensor is used in offices, hotels, convention centres, apartments, shops, etc. for the purpose of evaluating the indoor climate. This enables
energy-saving room ventilation on an as-needed basis, thereby reducing operating costs and improving well-being. One sensor for every 30 m² of
space is recommended.
The CO2 measurement is performed using an optical
NDIR sensor
(non-dispersive infra-red technology). The detection range is calibrated for
standard applications such as monitoring residential rooms and conference rooms.
TECHNICAL DATA
Power supply:
24 V AC ⁄ DC (± 10 %)
Power consumption:
< 1.5 W ⁄ 24 V DC typical;
< 2.9 VA ⁄ 24 V AC typical; peak current 200 mA
Sensor:
Optical NDIR sensor (non-dispersive infra-red technology),
with manual calibration (via zero button),
with automatic calibration ( fixed)
Measuring range:
0...2000 ppm
Output:
0 -10 V
Relay output:
without changeover contact
Measuring accuracy:
typically ± 30 ppm ± 3 % of measured value
Temperature dependence:
± 5 ppm ⁄ °C or ± 0.5 % of measured value ⁄ °C (whichever is higher)
Pressure dependence:
± 0.13 % ⁄ mm Hg
Long-term stability:
< 2 % in 15 years
Gas exchange:
by diffusion
Ambient temperature:
0...+ 50 °C
Warm up time:
approx. 1 hour
Response time:
< 2 minutes
Electrical connection:
0.14 - 1.5 mm
2
, via screw terminals
Housing:
plastic, material ABS,
colour pure white (similar to RAL 9010)
Dimensions:
85 x 85 x 27 mm
Installation:
wall mounting or on in-wall flush box Ø 55 mm,
base with 4-hole for cable entry from the back
Protection class:
III (according to EN 60 730)
Protection type:
IP 30
(according to EN 60 529)
Standards:
CE conformity, electromagnetic compatibility according to EN 61 326,
EMC Directive 2014 ⁄ 30 ⁄ EU, Low Voltage Directive 2014 ⁄ 35 ⁄ EU
Type ⁄ Code
Measuring Range
CO2
Output
CO2
EGQ220F931
0...2000 ppm
0 -10 V
Note:
This unit
must not
be used as safety-relevant device!
