F-31, F-32: Inclinometer There are very few problems with the inclinometer in general. The inclinometer allows the payload meter to com- pensate for front-to-rear weight transfer on a grade. Verify that when the truck nose is pointed uphill, the inclinometer reads positive. It is possible that the inclinometer is installed backwards. This could significantly reduce the accuracy of payload calculations. The inclinometer output is voltage that linearly represents the angle of the truck with nose up producing a positive incline. 0° = 2.6vdc and the voltage output decreases with positive incline. For example, with the truck parked 5° nose up: Using the formula:
V output = 2.6 volts - 0.103 x incline degrees volts degree The inclinometer output should be: V output = 2.6 volts - 0.103 x 5 ° = 2.085 volts volts degree Refer to the following page for the Inclinometer Fault Tree. M20007.2 3/02 Payload Meter II™ Troubleshooting M20-47