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Appendix
Potentiometer Calibration
The potentiometer should be calibrated once a month to ensure accurate
readings. If you are using the Consistometer software, use the built-in
calibration procedure. Otherwise, follow these steps:
1. Place the potentiometer on the calibration stand. Place the stand on the
edge of the Consistometer and plug it into the port on the side of the unit.
2. Connect the wire clamps to the contacts. From the groove going
clockwise around the unit, connect yellow, then black, then blue.
3. Slide the weight into the groove and wrap the cord clockwise around the
unit one full turn.
4. Let the cord hang over the wheel and off the table.
5. Attach the hook to the cord.
6. Apply the weights to the hook according to the chart below. Steady the
cord to minimize the amount of swinging.
When adding weights, remember that the hook weighs 50 grams.
Therefore, to test the potentiometer at 200g, you only need to add 150g
to the hook.
7. Firmly tap the surface of the calibration stand with a pen or the blunt end
of a screwdriver to settle the weights and stabilize the potentiometer.
Calibration
Stand
Weight in
Groove
