WIKA A2G-80 User Manual

Page 9

WIKA operating instructions air2guide model A2G-80

40202810.02 07/2012 GB/D/F/E/I

6. Commissioning, operation

Installation

■

Protect air quality sensors from contamination, high temperature

changes and vibrations

■

Solar irradiation and air draught are to be avoided

■

Mount duct sensors with their air intake facing the direction of the

flow

■

Max. air draught 10 m/s

Electrical connections

The sensor cannot distinguish pleasant from unpleasant smells, but

in the end it is the persons living or working in the room who have to

judge whether the air quality is satisfactory or not. Moreover, different air

compositions are occurring in different rooms.

This means that the set point for the required air quality is temporarily

preset during production. Optimisation must be done when the sensor

is installed.

Individual adjustment of the output signal is made via a trim potentiom-

eter on the sensor PCB. With this, the offset of the output signal is either

raised or lowered:
1. Attach sensors, lock the cover, switch on the power supply
2. Make sure there are good air conditions close to the sensor