Dr. Livingstone, I Presume WELDWISE 2400 - Manual (Page 105)

0435-INS-400 Rev. D
8-1
Calibrating the Sensors
All sensors must be properly calibrated to obtain maximum accuracy from the weld monitor. The
WMS program includes calibration screens that simplify this process by guiding the user through the
necessary steps. Both raw A/D and calibrated sensor readings can be viewed using the Input Monitor,
a screen that displays incoming values for all input channels.
Important Notes
Units of measure should be set prior to calibrating the sensors. These units are set in the tolerance
defaults screen.
Calibrating and Zeroing the displacement sensor are not the same thing. As a rule, calibration is
done only once while zeroing is done during periodic maintenance (whenever tooling, tips or
shunts are changed), and whenever work-piece material thickness changes (e.g., a new lot or batch
of parts).
Frequency of Calibration
Each set of sensors connected to the WeldWise™ 2400 inputs needs to be calibrated just once. A re-
calibration is necessary only if:
- A new sensor is substituted for an existing sensor;
- An existing sensor is removed and remounted;
- You are doing a re-calibration periodically every 6 months, largely done for force transducers;
- You are re-calibrating to troubleshoot a sensor or sensor cable problem .