Manual
Version
Page
DB04A
EN A1-9
PKP Prozessmesstechnik
19
3.15. Electrical power supply
The
DB04A
can be provided with power from a standard AA battery or from a common USB micro-
B charger that you typically use for the changing of your phone. There are optional modules by
which you can apply a 12 to 30 Vdc external power.
The lifetime of the battery strongly depends on the type and quality of the AA battery you use. We
recommend (and determine the specifications with) an Alkaline-Manganese Dioxide Battery with a
capacity of 3000 mAh (ANSI: 15A IEC: LR6)
Other types of batteries (for instance Zinc Carbon, Zinc Chlorine, NiCd, NiMH or Li-ion) can be
used, as long as the voltage is 1.2 to 1.8 Vdc. Using other batteries will influence the life of the
battery when used in the
DB04A
flow meter.
It is also possible to use rechargeable batteries, but the unit will however not charge the battery if
powered by the USB micro-B.
We strongly recommend to remove the battery from the case if you do not use the meter for longer
periods of time to avoid damage to the flow meter in case the battery starts to leak. The unit will
retain its settings so when you re-insert the battery the settings will be the same as when you took
it out. (The totalizer will be stored to the non-volatile memory once every 10 minutes, so the stored
value will never be older than 10 minutes)
There is no need to remove the battery if you connect the USB power supply. When you run the
unit on power from the USB micro-B and have a battery inserted, you can remove the USB
connector and the battery automatically takes over.
When the unit is powered by the battery you will not see the backlight to conserve energy. The
backlight is only operational when there is a power supply other than a battery.
When you replace or install a battery, all power to the unit should be disconnected.
