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8 Operation
8.1 Display
The meter readings are displayed with units and symbols on an 8-digit LCD.
8.2
Operation of meter
A pushbutton mounted on the front of the meter is used to switch to the various displays.
To show the data read out by the calculator in the display, various windows have been created as loop
functions that can be called up in succession to display the system information assigned to each
window (e.g. amount of energy, operating hours, volume of water, current temperatures, … ).
The meter has 6 different display loops: main loop, accounting date loop, info loop, impulse loop, tariff
loop and monthly value loop.
The tariff loop (5) in a heating or cooling meter is switched off in the default setting. This loop is only
switched on in a heat meter with cooling tariff.
The window content of each loop is programmed with the standard information ex works. Various
display windows comprise up to seven displays that change at intervals of 2 – 4 s. The loops in the
display are numbered from 1 to 6 to help the user find his way around quickly (Fig. EE). The main loop
(1) is programmed with the current data as default setting, e.g. for energy, volume, flow rate.
Fig. FF
LC display
1
Loop display (for loop 1)
1
Quadrant
display
Loop display
Tariff energy
Error symbol
Flow rate indicator
Maximum values
Marking for the calibrated value, which is
allowed to be used for billing