MULTICAL® 801
84
Kamstrup A/S · Technical Description · 5512-571_R1_GB_11_2016
10
Power supply
MULTICAL
®
801 is available for 24 VAC or 230 VAC supply voltage.
MULTICAL
801 Type 67-
Supply
230 VAC supply
7
24 VAC supply
8
As the connection PCB of MULTICAL
®
801 is equipped with either a 24 VAC or a 230 VAC transformer, it is not
possible to change the supply voltage of a previously supplied meter.
10.1
Built in battery backup
The built-in backup battery maintains all basic energy meter functions, including flow meter supply on terminal
11-
9
-10 (V1) as well as terminal 11-
9
-69 (V2) during power failure. The battery backup does not support functions
with high power consumption, such as back illumination of display and analog outputs.
The type number of the backup battery is 66-99-619 (2xA lithium battery with plug)
The lifetime of the backup partly depends on how long MULTICAL
®
801 remains without mains supply and partly on
the temperature, to which the battery is exposed.
Backup, expected lifetime
With supply
Without supply
MULTICAL
®
801
10 years
1 year
The expected back-up lifetime is reduced proportionally to the time the meter remains in stock. After a long period
in stock, or if in doubt, the back-up battery ought to be replaced before the meter is installed. Having changed the
back-up battery, the clock must be adjusted via METERTOOL.
If the meter is to be in stock for a long period, it is possible to disconnect the back-up battery. Before installation,
the back-up battery must be reconnected, and the clock must be adjusted and the data logger reset via METERTOOL.
After a storage period of three years, we recommend that you scrap the back-up battery.
