Sensotec PIM-3, Manual, Page: 71 / 97

Model PIM-3 11-13
11.12
W8
Write Shunt Calibration Value
R8
Read Shunt Calibration Value
SYNOPSIS
W8
{value} - Change shunt calibration value to {value} engi-
neering units.
R8
- Read Shunt Calibration Value.
DESCRIPTION
The
W8
command changes the shunt calibration value. The numeric value
given in the information field is in engineering units.
When the PIM-3 is calibrated to the transducer using the "Shunt Calibration
Method", the internal shunt calibration resistor is connected across two
transducer leads (-SIGNAL and -EXCITATION for SENSOTEC transducers)
and the output of the transducer is scaled to this value.
The PIM-3 will not send a response after this command has been processed.
If incorrect information is given, the PIM-3 will respond with “
COMMAND
ERROR
.”
This command is a universal command. Sending this command for the spe-
cial address of “FF” will cause all PIM-3’s on the communications link to pro-
cess the command.
EXAMPLE
The command below, when followed by a carriage return, will change the
shunt calibration value to 750.12.
#00W8750.12
WHEN TO USE IT
The shunt calibration value is set if the instrument was purchased with a
SENSOTEC transducer. This command is only needed if the instrument is
being used with a transducer that was not purchased from SENSOTEC.
This value is only used when calibrating with the "Shunt Calibration Method"
via the
F4
command.