SARTORIUS RC/MC-Balances
11
Checking the Internal Span Adjustment
Test Weights: (E2 - individual weights, calibrated)
Model Test weight
RC210S/P/D 200g
RC250S 200g
MC210S/P 200g
MC410S 2 x 200g
Test Procedure
Write down the permissible tolerance of the span on the Balance Test Record.
(Please refer to the Service Specifications Sheet)
On the Balance Test Record, write down in the the nominal mass value, the
deviation from the nominal mass value and the uncertainty of the test weight
you are using. If you are using several weights, write down the sum. (Please
refer to the calibration certificate of your weight set)
Calculate the conventional mass M of the test weight:
M = nominal mass value P + deviation D of the test weight. (Be sure to write
down the plus or minus sign!)
Write down the conventional mass M on the Balance Test Record.
Calculate the sum SU.
SU = permissible tolerance T of the span + uncertainty U of the test weight.
Write down the sum SU on the Balance Test Record.
Test Procedure (Weighing)
1) Unload and zero the balance.
2) Perform internal span adjustment (press the F1 key).
3) Center the test weight on the weighing pan.
4) Write down the displayed value on the Balance Test Record.
5) Repeat steps 1) to 4) twice.
Evaluating the Test Results:
Calculate Xi for all of the three displayed values you wrote down
Xi = displayed value Gi - conventional mass M
Write down the calculated values in the Balance Test Record.
Calculate the value X4
for all of the three displayed values you wrote down
Max. displayed value - min. displayed value
X4 = ————————————————
2
Write down the value X4 on the Balance Test Record.
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