Re-Zero Calibration Summary - Pressure Systems 9022 User Manual

Pressure Systems, Inc.
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 [ ].
Disable automatic valve shifting after module power up. Ensure
valves in RUN/CAL mode (default)
... 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]
Delay for settling of pneumatic inputs
Verify that measured data reads near expected zero value
Instruct module to calculate new offset coefficients for all 16
channels of Model 9016 (all 12 for Models 9021and 9022)
Place calibration manifold back into the RUN position [if
w0B01 command executed in Step 1]
Store new offset coefficients to transducer nonvolatile memory
... continue normal data acquisition
NetScanner™ System (9016, 9021, & 9022) User's Manual
Description
4 - 5
9016 9021/9022
Command Command
[w0B01] **
[w1200]
w0C01 **
[rFFFF0] [r0FFF0]
hFFFF h0FFF
[w0C00] **
[w08]
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