Wika A2G-85 Uživatelský manuál stáhnout pdf (Strana 10)

WIKA operating instructions air2guide model A2G-85

40339564.02 07/2012 GB/D/F/E/I

6. Commissioning, operation

Connection cable 1.5 m

Electrical connection

When using long connection cables, and depending on the cross-

section used, the measuring result might be falsied due to a voltage

drop on the common GND line, caused by the supply current and the

line resistance. In this case 2 GND lines must be laid to the CO

sensor

- one for the supply current and one for the measuring current.

Classes for the indoor air quality (EN 13779)

brown Supply voltage +24 V

white Reference potential GND

yellow Output measured value CO

Category CO

content above the content

in the ambient air in ppm

Description

Typical range Standard value

IDA1

< 400 ppm 350 ppm

High indoor air quality

IDA2

400 ... 600 ppm 500 ppm Mean indoor air quality

IDA3

600 ... 1,000 ppm 800 ppm Moderate indoor air quality

IDA4

> 1,000 ppm 1,200 ppm Low indoor air quality

Measuring principle

For the CO

measurement the "Non Dispersive InfraRed (NDIR)"

technology with automatic self-calibration (ABCLogic™) is used. For

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 55 56

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Wika A2G-85 Uživatelský manuál Strana 10