The five methods of sensor calibration – Measurement Computing StrainBook/616 User Manual
Page 44
The Five Methods of Sensor Calibration
Before proceeding with calibration, remember to enter your password. The password
must be entered before channel parameters can be changed.
Unless all of the parameters (for each channel to be calibrated) are accurately entered
into the spreadsheet, the calibration will produce incorrect results.
The sensor calibration program uses five methods of calibration:
o
2-Point Manual
o
2-Point Automatic
o
Shunt (Internal)
o
2-Point Shunt (External)
o
Name Plate (for load cell or transducer)
Table of Calibration Methods and Required Parameters
Excit-
ation
Gage
Factor
Sensi-
tivity
Shunt
Ohms
Bridge
Ohms
Full
Load
Max.
Load
Quie-
scent
Pt-1
(mV)
Pt-1
(Units)
Pt-2
(mV)
Pt-2
(Units)
2 Point
Manual
9
9
9
9
9
2 Point
Auto
9
9
9
9
9
9
9
Shunt
(Internal)
9
9
9
9
9
9
9
2 Point
Shunt
(External)
9
9
9
9
9
9
Nameplate
9
9
9
9
9
To use any of these calibration methods, enter the appropriate values into the required spreadsheet columns
of the Sensor Calibration window, as listed above, and click on the Calibrate Enabled Channels button on
the toolbar.
In 2-Point Manual calibration, a message box prompts you to apply the first load. When
prompted, apply the load and click the OK button. A second message box will prompt
you to apply the second load. When prompted, apply the second load and click OK.
Saving a Calibration File.
After calibrating the enabled channels, a message box asks if you want to save
the changes. Click on the Yes button to save the calibration and a dialog box will appear. If you choose not
to save the changes at this time, another message will appear asking if you want to save the changes when
you click on the Return to WaveView button on the tool bar. Click on the Yes button to save these changes
and a dialog box will appear. The most recently saved calibration file will be recorded in the
WAVEVIEW.CFG
default configuration file and will be loaded into WaveView whenever a new session is
started. The current configuration can also be saved from the toolbar or File menu item.
4-14 Software
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StrainBook/616 User’s Manual