Pressure Systems 9022 - Manual (Page 115)

Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual
www.PressureSystems.com 4 - 5
Set Operating Options (‘w’) (option index=0B hex) command. This allows independent control
of the calibration valve by the user using other options (see option indexes = 0C and 12 hex) of the
same command.
4.2.2 Re-zero Calibration Summary
Following is a simple, step-by-step procedure for executing a Re-zero calibration of a 9016 or
9021/9022 Intelligent Pressure Scanner. For Models 9021 and 9022, skip the steps that manipulate
valves as denoted by a double asterisk (**). Optional commands are shown within brackets [ ].
Description 9016
Command
9021/9022
Command
Disable automatic valve shifting after module power up. Ensure
valves in RUN/CAL mode (default) [w0B01]
[w1200] **
… normal data acquisition
Apply 0.0 psi differential to the module CAL and CAL REF
inputs.
Place the module calibration manifolds into the CAL position [if
w0B01 command executed in Step 1] w0C01 **
Delay for settling of pneumatic inputs
Verify that measured data reads near expected zero value [rFFFF0] [r0FFF0]
Instruct module to calculate new offset coefficients for all 16
channels of Model 9016 (all 12 for Models 9021and 9022) hFFFF h0FFF
Place calibration manifold back into the RUN position [if
w0B01 command executed in Step 1] [w0C00] **
Store new offset coefficients to transducer nonvolatile memory [w08]
… continue normal data acquisition