HBM PX401, Руководство по эксплуатации

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Internal calculation channels
PMX
A4354-2.2 HBM: public
213
13.2.4.3 RTD PT100 at PX455
Function Temperature measurement with a RTD Pt100 resistor
connected at PX455.
Range -100°C ... +500°C.
A fixed 100 Ohms precision resistor must complement the
RTD to form a half bridge. The complement resistor is
connected at the positive bridge supply.
The complement resistor can be connected directly at the
PX455 front clamps without wiring.
The details are outlined in a PMX Tech Note.
Inputs The half bridge signal in mV/V
Outputs Temperature in °C
Parameters R_wire [Ohms]: The resistance of the wire to the RTD
(single distance). This parameter must be set, when the
complement resistor is connected without wires directly at
the PX455 clamps.
If the complement resistor is connected with the same wire
length as the RTD 100, then the wire resistances are
compensated by the bridge layout and R_wire must be
zero.
Default R_wire = 0 Ohms
Exception handling If the input is marked as invalid (Invalid bit), the operation
stops and the output gets frozen and is marked as invalid.
When the temperature is out of range (-100 .. +500°C),
then -333.3°C is output and the output is marked as
invalid.