1
iGAS Operating Instructions, Issue 6, Apr 2018
TURNKEY ® iGAS® OPERATING INSTRUCTIONS
The following associated documentation is available from
www.iGASES.uk
•
iGAS Installation Instructions
•
Installing the Power Portal
•
Connecting iGAS to AirQWeb
BEFORE YOU START
iGAS® is supplied with its air filters removed. It is important these are refitted before you start to
use the instrument. Please refer to Figure 7 of the iGAS Installation Instructions. The larger Zero
Filter screws into the adaptor on the left, the twin o-rings of the smaller PTFE sample filter push
into the adaptor on the right. Before you begin, please make sure both filters are installed
correctly.
IMPORTANT:
REMOVE THE END CAPS FROM A NEW ZERO FILTER AND IT ALLOW TO VENT FOR
24 HOURS BEFORE FITTING. OTHERWISE, WHEN A NEW ZERO FILTER IS FITTED, IT CAN TAKE
SEVERAL HOURS FOR THE READINGS TO STABILIZE, ESPECIALLY CO, H
2
S and SO
2
It is recommended that the filters are changed at 3-monthly intervals, however, filter life may
vary depending on local ambient conditions. iGAS is supplied with one spare set of filters. It good
practice to mark the filters with their installation date.
A Filter Shield is provided with the instrument and this should be fitted when the instrument is
installed. It prevents the filters rapidly heating-up in direct sunshine and provides some
additional anti-tamper security. Please refer to the installation guide for more information.
iGAS is supplied in a weather proof case and, providing the Manifold temperature does not
exceed 45
⁰
C, will operate unshielded in most temperate climates. However, if the instrument is
to be installed in tropical locations, a full Sun Shield is available. This prevents the instrument
case overheating by reflecting away direct sunlight and is fitted in place of the standard Filter
Shield. Please contact Turnkey for more information
