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6 Battery operation and power saving mode
PLICSMOBILE T81/B81/S81 • External GSM/GPRS/UMTS radio unit
55234-EN-170206
Note:
Please note that event-controlled transmission (measured value/
status-controlled) is not possible in the power saving mode. A dial-in
connection for remote parameter adjustment is also not possible dur-
ing the inactive time.
When using battery operation and a HART sensor with non-required
4 … 20 mA signal, we recommend setting the sensor to multidrop
mode. In such case, the sensor consumes constantly only 4 mA
independently of the measured level, which increases the battery
life considerably. When connecting one or more sensors, the HART
multidrop mode is a basic requirement. A description of the activation
of multidrop mode can be found in the operating instructions of the
display and adjustment module.
With activated Bluetooth function, additional energy is needed; this
reduces the operating time with battery/accumulator operation con-
siderably. For that reason, switch off the Bluetooth function if it is not
being used (via the switch on the electronics module).
HART multidrop
Bluetooth