Calibrating a Model 915 Indicator using a Custom Sensitivity

Calibrating a Model 915 Indicator using a Custom Sensitivity

Calibrating a Model 915 Indicator using a Custom Sensitivity


This is the best method to calibrate a 915 if using any loads cells with a known output.

1.      Type in 915
2.      Hold the hidden E key for two seconds until 915E is displayed.

3.      Press SELECT, "ConF" will be displayed.
4.      Press SELECT, the current configuration number will be displayed.
5.      The new configuration number will be 19_00.  Fill in the third digit with the corresponding column number from the table below based on the desired increments.


6.      Type in the new Configuration number.
7.      Press SELECT, "ConF" is displayed.
8.      Press MENU, "CUST" is displayed.
9.      Press SELECT, "OutPut" is displayed.
10.      Press SELECT, the current sensitivity is displayed.
11.      Determine new sensitivity value.  The sensitivity value is equal to the eight digit mV/V output of all the load cells at the capacity used in step 5.  
            The 8 digit format is n.nnnnnnn with the first digit not shown if it is a zero. If the sensitivity is 0.1234567 then type 1234567.
12.      Type in the 8 digits of the sensitivity value.
13.     Press SELECT, "OutPut" will be displayed.
14.      Press MENU, "CAP" is displayed.
15.     Press SELECT, the current capacity row number is displayed.
16.     Type in the row number corresponding to the capacity of the system from the table below.

17.      Press MENU to return to the main configuration menu.
18.      Press G/N to return to Gross weighing mode.

The sensitivity value can be fine tuned using a known weight.  Use the formula: (Observed Weight/Known Weight) x Current Sensitivity = New Sensitivity Value
Example: 
      Known Weight is 1200 lbs but the scale reads 1000 lbs.
      The current output is 3494933.  This means the sensitivity is currently set to 0.3494933.

      (1000/1200) x 0.3494933 = 0.2912444

      New Output = 2912444


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