PNEG-2175CE
CE Compliant Sampler - Model GCE 45 and GCE 90
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6. Operation
Sampler Controls
It is recommended the sample be controlled via the GSI Sample Sentinel control system, which can be
supplied as full stand-alone control (SA) or safety interface (SI) versions. These are pre-programmed and
configured for safe, efficient use of the sampler. Where the sampler is part of a larger facility and is to be
controlled by third party controls, the SI version is recommended. This permits inputs for control mode,
auto sampling intervals and manual sampling from a third party control.
Main Isolator
Closing the main isolator (1) powers the control. Power light (2) will illuminate indicating the DC power
supply is active.
The safety controller will check all safety inputs and if satisfied, the status indicator (4) will emit a 1 Hz flash
continuously.
NOTE:
If the control was shut down in automatic mode, this will resume on restarting until reset.
Refer to the
below for more information.
A 3 pole service disconnect should also be installed, adjacent to the sampler, to provide safe isolation of
the sampler and control. Terminals for this are provided in the control.
Following power loss or shut down via the isolator or service disconnect, the sampler control must be
reset before sampling can proceed.
Reset Button
Pressing the reset button (3) following normal power-up will reset the sampler to ‘home’ position (fully to
the right) and leave the control in stand-by. The status indicator (4) will remain steady ON.
Stand-By/Sample Switch
The stand-by/sample switch (5) when turned to sample will permit the execution of the pre-programmed
timed sample procedure or, if the control is in manual mode, permit manual sampling. When returned to
stand-by mode, the sampler will complete the sample if it is in progress. This switch (5) shall not be used
as an alternative to the emergency stop.
Automatic Mode
Automatic sampling mode is selected by pressing and holding the mode button (7) until the status
indicator emits a fast continuous flash. Once in automatic mode, return to manual mode can only be
achieved by pressing and holding the mode button (7) until the status indicator stops flashing
(approximately 5 seconds).
Sample Button
Pressing and holding the sample button (6) for 3 seconds will permit a manual sample at any time when
the sampler is ON, regardless of operation mode. If however the sampler is in manual mode, this is the
only method a sample can be taken.
Sample Timer
The sample timer (8) provides automatic sampling on a timed basis when the control is in auto mode.
