Commissioning, Operation; Battery / Mains Operated; Connecting The Gas Compartment - WIKA GA11 Mode D'emploi

5. Commissioning, operation

5. Commissioning, operation
Depending on the version of the analytic instrument, the user interface may differ from
those illustrated in these operating instructions. However, the procedure is always the
same.
5.1

Battery / mains operated

The analytic instrument can be operated in battery mode and in the mains supply.
If the lithium-ion accumulator is fully charged, the analytic instrument can perform at least
5 measurements with the "back pumping" function. The number of the battery-powered
pump-back cycles is largely dependent on the tank pressure of the gas to be measured.
The GA11 sends a warning message on the display when battery is low.
If the instrument is not connected to the mains in time, it will shut down automatically in
order to prevent damages and data loss. In the mains operation, the battery is charged
and the instrument can be switched on again at the same time and operate without
restrictions.
Establishing connection to mains supply
1. Connect power supply unit to the power cord.
2. Connect power supply unit to mains connection on the operating panel.
3. Connect the power cord to the socket.
⇒
Connection to mains supply is established.
5.2

Connecting the gas compartment

CAUTION!
Escaping SF₆ gas results in environmental hazards!
If there are leakages at the connecting elements, the environmentally
hazardous SF₆ gas may be released to the atmosphere.
▶
Make sure that there is no leakage at any connections (e.g. by using gas
detector GIR-10).
To perform a measurement, the pressure of the gas compartment to be measured has
to be at least 1.3 bar abs. If the inlet pressure is below 1.3 bar abs., it is possible to use
an inlet pressure control unit (e.g. model GA05) to raise the pressure.
5.2.1 Pumping back in the measured gas compartment
▶
Connect "Inlet, return pumps " to the gas compartment.
⇒
The gas compartment is connected.
During back pumping, the gas is pumped back into the gas compartment via the "Inlet,
return pumps ".
WIKA operating instructions analytic instrument, model GA11
EN
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