In order to adjust this gain:
1. Start with the payload meter in normal operation
mode.
2. Adjust the gain pot, left to reduce the value and
right to increase the value.
3. Press and hold the LIGHT/INC and
MODE switches until "CHEC" is
flashing on the meter.
4. Press and hold the LIGHT/INC
switch until "ALL0" is flashing on
the display. "A.FUL" may also be displayed.
5. Press the LIGHT/INC switch14 times. The number
displayed will be the current Gt gain. This is not a
"live" reading. Any time the potentiometer is
changed, this cycle must be repeated to view the
change.
6. Press MODE once and "CHEC" will
flash on the display.
7. Press MODE once and the meter will return to
normal operation.
These calculations used a 13" front suspension diame-
ter and 10" rear suspension diameter.
Sprung Weight =
π
4
Suspension Diameter
2
(Psi Left + Psi Right)
Sprung Weight = Axle Weight(lbs)/2000
Example Calculation of Payload
Calculation of the Calibration Load
This procedure is similar to the manual calculation of
load. This calibration load is used as item #13 from the
manual calculation procedure.
1. Press and hold the LIGHT/INC and
MODE switches until "CHEC" is flash-
ing on the display.
2. Press and hold the CAL/CLR switch
until "CALL0" is flashing on the display.
3. Press the CAL/CLR switch to cycle through the
following data. The sequence repeats.
4. Press MODE once and "CHEC" will
flash on the display.
5. Press MODE once and the meter will return to
normal operation.
Front Weight (6) 106.00 Rear Weight(7) 75.10
X Incline Factor (9)
0.95
X Incline Factor (10) 0.98
100.70 73.90
X Link Factor (11)
1.00
X Link Factor (12) 1.53
Front Weight 100.70 Rear Weight 113.70
Front Weight 100.70
Rear Weight 113.70
Total Weight 214.40
XGain Factor (14)
1.00
214.40
- Calibration (13) -70.60
Current Load(15) 143.80
Figure 20-5.
Item and Description Units
1. Year of Calibration Last 2 digits of year
2. Month:Day of Calibration XX:XX
3. Hour:Minute of Calibration XX:XX
4. Truck Model Setting
5. Pressure Front Left Psi
6. Pressure Front Right Psi
7. Pressure Rear Left Psi
8. Pressure Rear Right
Psi
9. Front Sprung Weight Tons
10. Rear Sprung Weight Tons
11. Degree of Incline
±° Nose Up Positive
12. Incline Factor - Front Axle
13. Incline Factor - Rear Axle
14. Link Factor Front Axle
15.Link Factor Rear Axle
16. Calibration Weight
Tons
M20-8 Payload Meter II M20007 10/00
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