Product Detail

AERASGARD® KFTM-LQ-CO2-W

Patented quality product (patent no. DE 10 2014 010 719.1)

Maintenance-free AERASGARD® KTM - CO2 - SD duct air quality measuring transducer with active output, automatic calibration (fixed), in an impact resistant plastic housing with quick-locking screws, for determining the CO2 content of the air (0...2000 ppm/0...5000 ppm) and the temperature (–35...+80 °C). The transmitter converts the measured values into a standard signal of 0-10 V.

Maintenance-free AERASGARD® KFTM - LQ - CO2 - W duct air quality measuring transducer with active/switching output, automatic calibration (can be deactivated), in an impact resistant plastic housing with quick-locking screws, optionally with/without sisplay, for determining the CO2 content of the air (0...2000 ppm/0...5000 ppm), the quality in three VOC sensitivity levels (low/medium/high), the temperature (–35...+80 °C) as well as the relative air humidity (0…100% r.H.). The transmitter converts the measured values into a standard signal of 0-10 V or 4...20 mA (switchable).

These sensor devices are 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.

A long-term stable, digital humidity and temperature sensor guarantees precise measuring results.

The CO2 content is measured using an optical NDIR sensor (non-dispersive infra-red technology). The detection range is calibrated for standard applications such as the monitoring of residential and conference rooms.

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产品编号 1501-8118-7301-500
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Voltage supply
24 V AC/ DC (± 10 %)
Power consumption
< 4.8 W/ 24 V DC typical; < 6.8 VA/ 24 V AC typical; peak current 200 mA
Measuring range, humidity
0...100 % RH
Operating range, humidity
0...95 % r. H. (without dew formation)
Deviation of humidity
typical ± 2 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3 %
Output, humidity
0 -10 V or 4...20 mA (selectable via DIP switches)
Measuring range, temperature
–35...+80 °C
Operating range, temperature
–10...+60 °C
Temperature deviation
typically ± 0.2 K at +25 °C
Output, temperature
0 -10 V or 4...20 mA (selectable via DIP switches)
Sensor, VOC
VOC sensor (metal oxide) with automatic calibration
(VOC = volatile organic compounds)
Measuring range, VOC
0...100 % air quality; referred to calibrating gas;
multi-range switching (selectable via DIP switches)
VOC sensitivity low, medium, high
Output, VOC
0 -10 V (0 V = clean air, 10 V = polluted air) or 4...20 mA (selectable via DIP switches,
switchpoint can be adjusted from 0...100 % of the output signal)
Measuring accuracy, VOC
± 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
Measuring range, CO2
multi-range switching (selectable via DIP switches)
0...2000 ppm; 0...5000 ppm
Sensor, CO2
optical NDIR sensor (non-dispersive infra-red technology)
including atmospheric pressure compensation (up to 1100 mbar)
with automatic and manual calibration
Output, CO2
0 -10 V or 4...20 mA (selectable via DIP switches)
Measuring accuracy, CO2
typically ± 30 ppm ± 3 % of measured value
Temperature dependence, CO2
± 5 ppm/ °C or ± 0.5 % of measured value/ °C
(whichever is higher)
Pressure dependence
± 0,13 %/ mm Hg
Gas exchange
by diffusion
Relay output
with potential-free changeover contact 24 V (assignment selectable via DIP switches)
Response time
< 2 minutes
Output
0 -10 V or 4...20 mA, working resistance < 800 Ω
(selectable via DIP switches, selected variant applies for all outputs),
with offset potentiometer (± 10 % of the measuring range)
Sensor protection
plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)
Ambient temperature
–10...+60 °C
Process connection
by mounting flange, plastic
(included in the scope of delivery)
Protective tube
PLEUROFORM, material polyamide (PA6), with torsion protection, Ø 20 mm, vmax = 30 m/s (air)
without filter: NL = 202.5 mm / with plastic filter: NL = 235 mm (optional with metal filter: NL = 227 mm)
Electrical connection
0.14 - 1.5 mm2 via terminal screws
Cable connection
cable gland, plastic (M 16 x 1.5; with strain relief, exchangeable, max. inner diameter 10.4 mm) or
M12 connector according to DIN EN 61076-2-101 (optional on request)
Housing
plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016)
Housing dimensions
126 x 90 x 50 mm (Tyr 2)
Cable gland
M 16 x 1.5; including strain relief,
exchangeable
Long-term stability
< 2 % in 15 years
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529) housing only! (PLEUROFORM IP 30)
Standards
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU


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