6 | Operation and maintenance G 1690 / G 1690T
14 / 20 B-H86.0.31.DK2-1.0
6 Operation and maintenance
6.1 Operating and maintenance notices
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The device and sensor must be handled with care and used in accordance with the
technical data. Do not throw or strike.
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Sensor opening must be clean and dry, otherwise incorrect measurements are possi-
ble.
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Plugs and sockets must be protected from soiling._
If the device is not used for an extended period of time, the batteries must be removed.
Leaks from the batteries are avoided as a result.
6.2 Battery
6.2.1 Battery indicator
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If the empty frame in the battery display blinks, the batteries are depleted and must be
replaced. However, the device will still operate for a certain length of time.
If the BAT display text appears in the main display, the battery voltage is no longer
adequate for operation of the device. The battery is fully depleted.
6.2.2 Changing battery
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Danger of explosion!
Using damaged or unsuitable batteries can generate heat, which can cause the batter-
ies to crack and possibly explode!
– Only use high-quality and suitable alkaline batteries!
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