8
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EGQ110F931
Rev. 2021 - V35
Maintenance-free duct sensor with active output, automatic calibration, in a compact plastic housing with snap-on lid, for determining the air quality
(0…100 % VOC). 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.
The air quality is detected by a
VOC sensor
(mixed gas sensor for volatile organic substances). This sensor determines the loading of the room air
due to contaminated gases such as cigarette smoke, body perspiration, exhaled breathing air, solvent vapours, emissions etc. With regard to the
expected air contamination, low, medium or high VOC sensitivity can be selected.
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:
VOC sensor
(metal oxide) (VOC = volatile organic compounds),
with manual calibration (via zero button),
with automatic calibration (permanently active)
Measuring range:
0...100 % air quality; referred to calibrating gas;
multi-range switching
(selectable via DIP switches)
VOC sensitivities (low/medium/high)
Output:
(0 V = clean air, 10 V = polluted air)
0 -10 V
or
4...20 mA, working resistance < 800 Ω (selectable via DIP switches)
with offset potentiometer (± 10 % of the measuring range)
Relay output:
with potential-free
changeover contact
(24 V / 1 A),
switchpoint adjustable
Measuring accuracy:
typically ± 20 % of final value (referred to calibrating gas)
Service life:
> 60 months (under normal load conditions),
depending on the type of loading and gas concentration
Gas exchange:
by diffusion
Warm-up time:
approx. 1 hour
Response time:
approx. 1 minute, minimum flow rate 0.3 m / s (air)
Ambient temperature:
–10...+60 °C
Electrical connection:
0.14 - 1.5 mm
2
, via terminals
Housing:
plastic, UV-resistant, material polyamide, 30 % glass-globe-reinforced,
with quick-locking screws (slotted ⁄ Phillips head combination)
colour traffic white (similar to RAL 9016),
Housing dimensions:
72 x 64 x 37.8 mm
Cable connection:
cable gland, plastic
(M 16 x 1.5; exchangeable, max. inner diameter 10.4 mm)
Protective tube:
material polyamide (PA6), with torsion protection,
Ø 20 mm, NL = 202.5 mm, v
max
= 30 m/s (air)
Process connection:
by mounting flange, plastic (included in the scope of delivery)
Protection class:
III (according to EN 60 730)
Protection type:
IP 65
(according to EN 60 529) Housing with closed cover (protective tube: IP 30)
Housing tested, TÜV SÜD, Report No. 713139052
Standards:
CE conformity, electromagnetic compatibility according to EN 61 326,
EMC Directive 2014 ⁄ 30 ⁄ EU
Type ⁄ Code
Measuring Range
VOC
Output
VOC (switchable)
Equipment
EGQ110F931
0...100 %
0 -10 V ⁄ 4...20 mA
changeover contact
Note:
This unit
must not
be used as safety-relevant device!
