Sierra RedyCompact Meter, Инструкция по эксплуатации, Страница: 24 / 73

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In pressurized-air applications using compressors, the air must be dry and free of oil. Please
ensure that a suitable processing unit is located before the devices. In the case of gases from
cylinders, in general no filter is needed. For more information, see chapter
5. Maintenance .
3.14.
Electrical Power Supply
The RedyCompact can be provided with power from a standard AA battery or from a common USB
micro-B charger that you typically use for the charging of your android phone. There are optional
modules by which you can apply a 8-30 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 RedyCompact 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 in an interval that you can set. See
chapter
4.11.3 Totalizer )
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 and the unit is not in
ECO mode. (See chapter
4.12.1 Measurement for more information)
Note
When you replace or install a battery, all power to the unit should be
disconnected.