GasClam 2 Instrument User Manual
Ion Science Ltd.
Unrivalled Gas Detect
ion.
ionscience.com
10
Number of Units and Site Layout
To achieve the required effectiveness of site monitoring the types of
gases (see section “Specification”) and additional parameters including
water level that need be monitored should be defined and the GasClam
2 units need to be configured and calibrated accordingly prior to
deployment in the field.
Also the number of GasClam 2 units to be used and the location of the
boreholes should be planned with consideration to access, ground water
and possible flooding.
Hazardous Areas
It is important to define the extent of hazardous areas in accordance with national and local standards and how
far these areas extend away from the boreholes where GasClam 2 will be deployed.
Borehole Headworks
The GasClam 2 is designed to f
it in a 50 mm (2”) borehole. The recommended Headworks are 8” Monitoring wells
from Stuart Wells (http://wellservices.stuartgroup.ltd.uk/) or a similar type and should be installed following the
diagram below:
It is important to have the standpipe a maximum of 3 cm above the base of the Headworks, this will ensure the
GasClam 2 will fit under the lid of the cover. The Headworks must be concentric to the standpipe for the GasClam
2 to be housed correctly. The standpipe must also be cut square to allow a good seal.
If a protective cover is to be used make sure this ends below the top of the standpipe otherwise the GasClam 2will
not fit correctly.
Concrete Collar
GasClam 2
w 2
Gravel
Max clearance 3 cm
Standpipe
