GasClam 2 Instrument User Manual
Ion Science Ltd.
Unrivalled Gas Detect
ion.
ionscience.com
18
Ensure that either a Snorkel Set or the Vent Plug is fitted.
If a water level sensor is to be used first hook it and then connect it to
the GasClam 2 outside the hazardous area. Take the GasClam 2 with the
water level sensor to the borehole. First lower the sensor and then the
GasClam 2 again ensuring a good fit with the Rubber Collar and the
standpipe (see water level sensor instructions).
Turning the GasClam 2 On
The only way to manually start the GasClam 2 when it has been deployed
is to use the supplied
Push-Button Cable
. It connects to the Com Port on
the head of the GasClam 2 in the same way as the Serial Communication
Cable.
It is intrinsically safe and is the
ONLY
piece of equipment that can be
connected and disconnected from the Unit in a hazardous area.
To start the GasClam 2, hold the button down for two seconds, the red
LED will flash rapidly indicating the GasClam 2 has started logging and is
currently sampling.
After sampling has finished (approximately 3 minutes) the red LED
flashes intermittently indicating that the GasClam 2 is Logging but
between Samples.
To stop the GasClam 2, press the button for two seconds, the red LED
will stop flashing indicating that the GasClam 2
is “Sleeping”.
The Push-Button cable can also be used to perform occasional checks of
the state of the GasClam 2 without the need to take the Unit out of the
borehole
It is recommended that when a GasClam 2 is deployed and logging is first
started to check that the LED starts to flash rapidly indicating that
sampling has started and then to wait until the LED starts to flash
intermittently indicating that the first sample has finished before
disconnecting the Push-Button Cable.
Leaving the Site
When leaving a borehole check that:
1.
the Snorkel Set is fitted correctly and above the flood level,
2.
the Com Port Cap is fitted to prevent dust entering the socket,
3.
the Headworks cover has been securely fitted.
Site Visits
WARNING
: Do not connect or disconnect any cables in the hazardous area and do not use non-approved
equipment in the hazardous area such as laptops, notebooks and mobile phones.
WARNING
: Before removing the GasClam from the field it must be run at least once (purged) in a non-
hazardous atmosphere to clear any hazardous gasses from the unit.
