ion science GasClam, User Manual

Page: 7 / 39

Gasclam Ion Science Ltd
Page 6 of 37
The effects of water on your GasClam
2. Effects of flooding on data and GasClam
When the unit is not sampling it has an ingress protection rating of IP-68 (submersible to 10 meters for 1 week).
However,
 Immersion will effect data and
 May require subsequent corrective action
These effects and requirements will differ whether immersed from above, i.e. flooded headworks, or from below, i.e. rise
in borehole water level, see table below:
Flooded
Headworks
Remedial action Preventive maintenance
Effects on
data should vent breather be
submerged:
 atmospheric pressure
reading will be incorrect
and will remain incorrect
 Scheduled venting will be
ineffective.
Use borehole pressure as approximate
replacement or use data from another
source.
If chamber is known to
flood, or is already full of
water
 Chose another
chamber
 Or replace
snorkel with
bolt
Effects on
GasClam If submerged for an extended
period the vent pipe may become
flooded.
The vent breather may become
clogged by dirty water.
When GasClam is visited
 Check data and call service
centre if atmospheric
pressure looks strange and
they will advise
If chamber is liable to
flooding
 replace vent
breather each visit
Flooded
Borehole
Remedial action Preventive maintenance
Effects on
data
Should water reach the bottom of
the GasClam the inflow and
outflow valves will remain closed
and no samples will be taken:
 borehole pressure reading
will be incorrect
 gas concentration
readings will be incorrect
Data points collected whilst the
sampling cycle was disabled will be
marked
If borehole water level is
known to be high or is
already full of water
 Chose another
chamber
 Or extend the
borehole above
ground level
Effects on
GasClam None None