4 Operation
MANUAL TME400-VCF · EN08 · July, 01
st
2021
The time during which the display is active for tests is selected as 60
minutes. In general, however, it must be observed that higher energy
consumption is associated with this time, so this time should be se-
lected as short as possible, if possible.
1-channel without errors (default)
2-channel without X:Y error
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 superflu-
ous and has no further significance.
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.
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.
The HF output pulses (X3 pulse 1) are always uncorrected!
With an active characteristic curve correction, no HF pulses
are output.
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