Power Supply - RMG TME400-VMF Operating Manual

1 Introduction
TME400-VMF
In addition to the features of the TME400 VM, this version can be used for custody-
transfer applications.
16

Power supply

1.3.3.
Battery-operated device
The TME400 is equipped with a replaceable 3.6 V lithium battery. The device is de-
signed for continuous operation for approximately 10 years. To achieve this, the de-
vices must not be read more than once weekly and/or woken with the external button.
Battery-operated device with additional external power supply
An electric supply of the TME400 via the 4-20mA current loop reduces the power
consumption from the batterie and typically extends the service life of the battery to
more than 12 years.
If the TME400 is additionally electrical powered by the RS485 interface, the service
life of the battery is typically extended to more than 12 years.
Battery replacement indicator
The remaining battery life is determined by means of an internal calculation. An indi-
cator in the display appears when it is time to replace the battery. Battery replace-
ment is described in chapter 3.1.4 Battery replacement. In parameter G20 Date of
last battery change the date of the last battery change is displayed (see chapter 4.3.3
Coordinates in context).
Manual TME400-VMF · EN02 · 2018 September 6th