TECHNICAL DESCRIPTION
MULTICAL
®
41
5512-313 GB/01.2010/Rev. C1
19
7
The Calculator
7.1
Measurement and calculation
MULTICAL
®
41 uses time based integration, i.e. calculations of accumulated volume are carried out at fixed
intervals irrespective of the actual water flow. In normal mode MULTICAL
®
41 has an integration interval of 28
sec., whereas in ”fast mode” it has an interval of 4 sec.
”Normal mode”
In normal mode MULTICAL
®
41 passes through an integration sequence of 28 sec. Through this sequence the
water flow is measured at intervals of averagely 3.5 sec. All display values are updated at intervals of 28 sec. In
addition, the display showing actual flow is updated at intervals of 14 sec.
”Fast mode”
In fast mode MULTICAL
®
41 passes through an integration sequence of 4 sec. Through this sequence the water
flow is measured at intervals of averagely 1 sec. At the end of the sequence the volume calculations are made.
All display values are updated at intervals of 4 sec.
7.2
Push buttons
MULTICAL
®
41 has a
front key
for display change showing the
main menu
with
primary registers
. During normal
operation the display shows the accumulated volume in m
3
.
By activating the front key the display e.g. shows actual flow, peak flow (monthly), hour counter etc. (see section
3.1.1
Configuration of the display
).
If the front key is activated for 4 sec., the display changes to a
submenu
showing
secondary registers
such as
Input A, Input B, tariffs and customer number (see section 3.1.1
Configuration af the display
).
Figur 8
Under the transparent top cover an internal push button ”P” is found. This button is used during verification of
the meter (see section 12
Calibration and verification
).
”P” button
Front key