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Issue date: 8/17/2020
Thermokon Sensortechnik GmbH, Platanenweg 1, 35756 Mittenaar, Germany · tel: +49 2778 6960-0 fax: -400
LA+_CO2_Datasheet_en-us.docx © 2020
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NOTES ON DISPOSAL
As a component of a large-scale fixed installation, Thermokon products are intended to be used permanently as part of a building
or a structure at a pre-defined and dedicated location, hence the Waste Electrical and Electronic Act (WEEE) is not applicable.
However, most of the products may contain valuable materials that should be recycled and not disposed of as domestic waste.
Please note the relevant regulations for local disposal.
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INFORMATION ABOUT INDOOR AIR QUALITY CO
2
EN 13779 defines several classes for indoor air quality:
Category
CO
2
content above the content in outdoor air in ppm
Description
Typical range
Standard value
IDA1
<400 ppm
350 ppm
Good indoor air quality
IDA2
400.. 600 ppm
500 ppm
Standard indoor air quality
IDA3
600..1.000 ppm
800 ppm
Moderate indoor air quality
IDA4
>1.000 ppm
1.200 ppm
Poor indoor air quality
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INFORMATION ABOUT SELF-CALIBRATION FEATURE CO
2
All gas sensors are subject to drift caused by components. This fact results generally in the need to recalibrate the sensors regularly.
With dual channel technology Thermokon integrates automatic self-calibration for different fields of operation. In contrast to common used ABC-
Logic sensors with self-calibration dual channel are suitable for applications operating 24 hours, 7 days a week as for example hospitals.
Manual calibration is not necessary!
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TECHNICAL DATA
Measuring values
CO2
Output voltage
(type-dependent)
LA+ CO2 V
0..10 V, min. load10 kΩ
LA+ CO2 A
2x 0..10 V or 0..5 V, min load 10 kΩ
(live-zero configuration via Thermokon USEapp)
Output ampere
LA+ CO2 A
4..20 mA, max. load 500 Ω
Power supply
(type-dependent)
LA+ CO2 V
15..35 V = or 19..29 V ~ SELV
LA+ CO2 A
15..35 V = SELV
Power consumption
max. 2,5 W (24 V =) | 4,3 VA (24 V ~)
Measuring range CO2
(type-dependent)
LA+ CO2 V
0..2000 ppm
LA+ CO2 A
0..2000 ppm (Standard), 0..5000 ppm (optionally
configured via Thermokon USEapp)
Accuracy CO2
±50 ppm +3% of reading (typ. at 70 °F, 50% rH)
Calibration
self-calibration, Dual Channel
Sensor
NDIR (non-dispersiv, infrared)
Enclosure
enclosure USE-M, PC, pure white, with removable cable entry
Protection
IP65 according to EN 60529
Cable entry
Flextherm M20, for wire max. Ø=0.18..0.35 in., removable
Connection electrical
removeable plug-in terminal, max. 14 AWG
Ambient condition
+32..+122 °F, max. 85% rH short term condensation
Mounting
installation is also possible using mounting base
