Changing The Battery - RMG TERZ 94 Operating Instructions Manual

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Changing the battery

For the TERZ 94 use only lithium batteries of the type SL 770/P Size C, 3.6 V produced by
Sonnenschein or type LS 33600 produced by Saft.
These batteries have a service life of approx. 6 years and can be ordered ready for installation from
RMG under the following order number:
For Ex and Non-Ex devices:
Emergency battery for TERZ 94-S:
To change the battery, you must proceed as follows:
• Remove the cover of the meter head – on the rear side, there is the battery fixed with cable
ties.
• If the meter is located in an area subject to explosion hazards, disconnect the sensor wires
from terminal X5 (see chapter "Electrical connections" – Remember the terminals and colours!)
and take the display board to an area without explosion hazards.
• Remove the connecting wires of the battery from the contacts on the bottom of the terminal
board.
• Screw off the four screws with witch the battery board is fixed.
• Remove the cable ties with which the battery is fixed and take out the battery.
• Insert the new battery and fix it with cable ties.
Plug the connecting wires of the battery on the contacts of the terminal board. Make sure that
•
the polarity is correct.
• Reinsert the battery-board into the case and screw it on. In case you have previously
disconnected the wires of the sensor and the control button, you must connect them again
(make sure that the polarity of the sensor wires is correct!).
• Close the case.
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Manual TERZ 94 · EN09a · 2017-11
• If you use other batteries than the replacement batteries from RMG, you run the
risk of the TERZ 94 not being approved for areas subject to explosion hazards any
more.
• In areas subject to explosion hazards, you must never insert or remove the battery.
Remove the display board from the case and change the battery in an area without
explosion hazards.
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