Super Systems SDS 8120 User Manual
Page 33
Super Systems Inc.
Page 33 of 104
Color Touch Screen Data Logger Operations Manual
Set up your calibration device as needed. When ready to begin calibrating, press
Calibrate.
Figure 40 - Setting Up A Voltage Calibration
Figure 41 - Voltage Calibration (Span)
Ready to Begin
Use the results of the calibration to set up offsets for the SDS Data Logger. Editing
offsets is described in the “Edit Offsets” section above.
CJ Trim
For the Trim calibration, TC wire should be used. The trim calibration is performed by
connecting a thermocouple calibration device to each input and outputting a trim
temperature that should be equal to the expected operating temperature. For example,
the calibration could be completed using an output temperature of 1700°F. After the
zero calibration and span calibration, the temperature may read 1701.5°F instead. This
type of calibration should be used instead of the regular cold junction thermistor
calibration unless the cold junction temperatures are reading a temperature that is
much too high for what the ambient temperature could possibly be. A cold junction
thermistor calibration can be used in this instance when need be, but the Trim
Calibration is preferred.
IMPORTANT:
Before
performing this calibration:
1. Ensure that a sourcing device is properly connected and sourcing voltage into the proper
inputs on the Color SDS Data Logger.
2. Ensure that the input types are set up correctly. See View Input Types and, if necessary,
3. If the data logger has been brought inside from a cold environment, wait 30 minutes
before performing the Cold Junction Trim Calibration. This will provide enough time for
the data logger to reach a stable temperature.
To perform a cold junction trim, first select the thermocouple type from the dropdown
list. Select the inputs that will be included by pressing the Select Inputs button. Enter
the Target Value and press Calibrate.