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strongly recommend to use the “auto power off” in the menu for battery driven
) More information on the battery in
3.16 How to replace the battery?.
Note 1: When we supply the unit, the “auto power off” will be set to 15
minutes
Note 2: The unit can be set to performance mode when powered from the battery, this
will strongly increase the battery usage. See chapter
information.
2.15. Optional modules
As an additional option you can purchase a power supply or an alarm module.
2.15.1. Power supply module
The power supply module, is provided with a voltage from 8 to 30 Vdc, will power
the unit. The unit comes with a 2 meter cable.
2.15.2. Alarm module
Power in
The alarm module provides 3 individually settable alarms and 2 inputs. Each alarm
can be set by the customer. The module is supplied with a 2 meter fly-lead cable and
needs to be powered by 8…30 Vdc which also powers the compact flow meter.
Each of the 3 alarm contacts can be configured as high, low, window and totalizer
alarm. Once the alarm becomes active, the 3 potential free alarm contacts can be
reset in many different ways. Automatic, through the touch screen or with one of the 2
input signals. Other options like hysteresis settings and delays (timers) are also
available.
The 2 input contacts or customer set alarm conditions can also be used to reset the
totalizer.
in this manual.
Figure 5: Power and Alarm module wiring
Both the power and the alarm module are mounted similar to the battery module (see
3.16 How to replace the battery
). They replace the battery module, so you cannot use
these modules in combination with battery power.
An external magnet can unintentionally influence the alarm contacts.
Generic specifications optional alarm module GCA
Power input:
Voltage supply range : 8… 30 Vdc (Power supply hereafter refered to as the 24 Vdc
power supply)
Max. current : 300 mA
Protection input: Polyfuse (trip current > 500mA) and reverse polarity protected
Switch ratings switch 1 + 2 (SPST hard contact):
Maximum current
0.5 A
Maximum voltage
30 Vdc
Relais lifetime
> 5 million
Switch ratings switch 3 (DPST contact):
Maximum current
1 A
Maximum voltage
30 Vdc