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VSM-de-171005
Output Scaling - Analog Output Characteristic (OC)
The analog output characteristic of the VSM can be scaled according to
application requirements by adjusting this parameter via software command.
The voltage output curve can, for example, be made directly compatible with
transducers of other brand labels.
A very comfortable way of scaling the output curve with graphical support is
offered by the VacuGraph
TM
software.
In the data section of the software telegram the following parameters will be
transmitted:
CHAR: "Log": logarithmic relation between voltage and pressure
V
out
[V] = GAIN[V] x log (p[mbar]) + OFFSET[V]
"Lin": linear relation between voltage and pressure
V
out
[V] = GAIN[V/mbar] x p[mbar] + OFFSET[V]
GAIN: G[float] Gain in V per pressure decade or V per mbar
OFFSET: O[float] Voltage offset in V
LOW.L: L[float] smallest admissible output voltage in V
UPP.L: L[float] highest admissible output voltage in V
UNDER.: U[float] Voltage output in V in case of pressure underrange
OVER.: O[float] Voltage output in V in case of pressure overrange
FAULT: F[float] Error signal in V
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