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Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual
www.PressureSystems.com
3 - 20
It is not necessary to enter the two or more calibration points in strict numerical
order (i.e., 1, 2, ... npts). Any convenient entry order is allowed, though each
point’s actual pressure value must be correctly stated (with the pppp.pppp
parameter) when executed. Previously entered points may be reentered if it is
necessary to account for hysteresis. However, all the points specified by the npts
parameter of the Configure & Start (‘00’) sub-command must be supplied before the
final Calculate and Apply (‘02’) sub-command can be executed, else an error will
result.
Example:
! Supply each of the previously-specified three (3) pressure calibration points to the
Multi-Point Calibration function, as was stated in the previous example of the
Configure and Start (‘00’) sub-command. Assume that all the affected four (4)
channels have differential transducers with the same -5 to +5 psi range. Include at
least one pressure point in the negative range of these transducers.
“C 01 1 -2.5”
“C 01 2 0.0”
“C 01 3 5.0”
Read responses (separately after each command executed above):
“-2.4998 -2.4999 -2.5001 -2.500”
“0.0 0.0013 -0.0133 -0.00001”
“5.0091 4.9992 5.0010 4.9998”
Data are returned in reverse channel number order (i.e., 4, 3, 2, 1) in each response.