OHAUS SCOUT, Руководство по обслуживанию

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4-3
CHAPTER 4 MAINTENANCE PROCEDURES
4.2.1.1 Segment Display Test (Cont.)
2. Tare the balance. The display should indicate a zero weight.
4.2.2 Calibration
To verify that the balance is functioning properly, it must be calibrated prior to testing.
After calibration, proceed to Performance Tests, paragraph 4.2.3.
Span Calibration resets the balance’s weighing range by checking 2 points: zero and
a weight value within the balance’s range.
Linearity Calibration resets the balance’s weighing range by checking 3 points; zero
and two different weight values within the balance’s range. This also helps minimize
deviations between actual and displayed weights throughout the range.
A 200 g calibration mass is supplied with the 200g and 400g balances for performing
Span Calibration. A 300 g calibration mass is supplied with the 600g balance. Linearity
calibration requires an additional 100g mass for 200g Balances, 200g mass for 400g
balances and 300g mass for 600g balances. Masses are available from Ohaus as
accessories.
4.2.2.1 Calibration Masses
Before beginning calibration, make sure masses are on hand. Do not rely on previously
stored calibration data. Calibration should be performed as necessary to ensure
accurate weighing. Masses required to perform calibration is listed in Table 4-1.
TABLE 4-1. CALIBRATION MASSES
4.2.2.2 Calibration Procedure
Before beginning the procedure, make sure that the calibration masses are on hand.
NOTE: Do not remove calibration mass until weight value is displayed on the balance.
LINEARITY SPAN
MODEL MASS MASS
200g 100g 200g
400g
2 x 200g 200g
600g 2 x 300g 300g
NOTE: Masses must meet or exceed ASTM
Class 4 Tolerance. Calibration masses are
available from Ohaus as accessories.