Sartorius Micro MC Series - Balance Adjustment; Adjustment Sequence and Preparation

SARTORIUS RC/MC-Balances
13
10) Place the test weight
P P
P P
P next to the tare weight
T2T2
T2T2
T2 in the center of the
weighing pan and write down the displayed value
G3.G3.
G3.G3.
G3.
11) Remove test weight
PP
PP
P from the pan, and place the tare weight
T1T1
T1T1
T1 next to
tare weight
T2T2
T2T2
T2 on the edge of the weighing pan and tare the balance.
12) Place test weight
PP
PP
P next to the tare weights
T1T1
T1T1
T1 and
T2T2
T2T2
T2 in the center of
the weighing pan and write down the displayed value
G4.G4.
G4.G4.
G4.
Evaluating the Test Results:
Calculate the linearity errors as follows:
L2 = (G1 + G2 - G3 - G4) / 2
L1 = (G1 - G2 + L2) / 2
L3 = (G3 - G4 + L2) / 2
Evaluation: The values L1, L2, L3 calculated in this way represent the linearity errors at
approx. 25%, 50% and 75% of the maximum capacity and must be within
permissible tolerances for the linearity given on the Service Specifications
Sheet.
Adjustment
Adjustment Sequence
– check reproducibility - if within tolerance:
– Adjust the off-center load (eccentricity testing)
– Linearity (in the BPI mode)
– Span adjustment (in the BPI mode)
Preparing the Balance for Adjustment
Please refer to the section “Service Prerequisites” on page 3.
For adjusting the linearity and span with the CAS server (PSION), set the
balance to the BPI Mode (BPI = Binary processor interface).
– Turn off the auto zero function in the balance operating menu (Code 162).
– Turn off the filling code (Code 1 21).
Important note: Perform adjustments only if a CAS server (PSION) or SARTOCAS service pro-
gram is installed!
After completing these adjustments, select the “Close” function. Otherwise,
you will not be able to use any of the peripherals.
This is how you test to see which mode the balance is in:
Press the print key:
– An acoustic signal means that the balance is in the SBI mode.
– If “ERR 30” is displayed, this means that the balance is in the BPI mode.