RMG TME400-VM, Operating Manual

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4 Operation
Manual TME400-VMF · EN07 · December, 7
th
2020
67
The time during which the display is active for tests is selected as
60 minutes. In general, however, it must be observed that higher en-
ergy consumption is associated with this time, so this time should be
selected as short as possible, if possible.
Z25 Volume metering mode
0 1-channel without errors (default)
1 1-channel stop on error
2 1-channel run on error
3 1-channel start / stop
4 1-channel reset
5 2-channel stop on error
6 2-channel run on error
7 2-channel without X:Y error
8 1 Channel Start/Stop Mode 2
With 1-channel measurements (0, 1, 2, 3, 4), the Z04 and Z05 pulse
comparison is not activated.
An entry for sensor type 2 is superfluous and has no further signifi-
cance.
Volume metering mode 8: 1 Channel Start/Stop Mode 2
If the external contact input 3 is closed (or opened), this additional
mode 2 triggers a start (or stop) for the start/stop totalizer during this
time.
The LF output and the current output are deactivated for this period
(4 mA) and no pulses are output (main totalizers stop).
In case of an error, the pulses are counted in the error totalizers and
current and pulses are output.
Z26 Characteristic correc-
tion
If the TME400 is supplied with a current supply, the TME400 ena-
bles a characteristic correction via a polynomial. This correction
must be activated with coordinate Z26. With this polynomial correc-
tion, the corresponding percentage deviations of the turbine meter
from a reference standard are determined for fixed percentage flow
rate values. From these deviations, a polynomial function which ide-
ally reflects the curve running through these points is calculated. The
coefficients of the polynomial A-2, A-1, A0, A1 and A2 are adjusted
by the manufacturer in the coordinates B10 to B14 or can be entered
there when the manufacturer of the turbine meter provides these val-
ues.
Note
The HF output pulses (X3 pulse 1) are always uncorrected!
With an active characteristic curve correction, no HF pulses
are output.