Campbell CR800 Series, Operator'S Manual

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Section 7. Installation
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7.7.11.2 Field Calibration Programming
Field-calibration functionality is included in a CRBasic program through either of
the following instructions:
• FieldCal() — the principal instruction used for non-strain gage type
sensors. For introductory purposes, use one FieldCal() instruction and a
unique set of FieldCal() variables for each sensor. For more advanced
applications, use variable arrays.
• FieldCalStrain() — the principal instruction used for strain gages
measuring microstrain. Use one FieldCalStrain() instruction and a
unique set of
FieldCalStrain()
variables for each sensor. For more
advanced applications, use variable arrays.
FieldCal() and FieldCalStrain() use the following instructions:
•
LoadFieldCal() — an optional instruction that evaluates the validity of,
and loads values from a CAL file.
• SampleFieldCal — an optional data-storage output instruction that
writes the latest calibration values to a data table (not to the CAL file).
FieldCal() and FieldCalStrain() use the following reserved Boolean variable:
• NewFieldCal — a reserved Boolean variable under CR800 control used
to optionally trigger a data storage output table one time after a
calibration has succeeded.
See CRBasic Editor Help for operational details on CRBasic instructions.
7.7.11.3 Field Calibration Wizard Overview
The LoggerNet and RTDAQ field calibration wizards step you through the
procedure by performing the mode-variable changes and measurements
automatically. You set the sensor to known values and input those values into
the wizard.
When a program with FieldCal() or FieldCalStrain() is running, select
LoggerNet or RTDAQ | Datalogger | Calibration Wizard to start the wizard. A
list of measurements used is shown.
For more information on using the calibration wizard, consult LoggerNet or
RTDAQ Help.
7.7.11.4 Field Calibration Numeric Monitor Procedures
Manual field calibration through the numeric monitor (in lieu of a CR1000KD
Keyboard / Display is presented here to introduce the use and function of the
FieldCal() and FieldCalStrain() instructions. This section is not a
comprehensive treatment of field-calibration topics. The most comprehensive
resource to date covering use of FieldCal() and FieldCalStrain() is
RTDAQ