Calibration menu, Calibration menu protection, Calibration masses – Ohaus AS Series Electronic Balances User Manual

Page 13: Calibration weights

CALIBRATION MENU

Analytical Standard balances can be calibrated in two ways: Span calibration or
Linearity calibration. Span calibration resets the balance’s weighing range using two
weight values: zero and a weight value at or near the balance’s capacity. Linearity
calibration minimizes deviation between actual and displayed weights within the
balance’s weighing range. Three weight values are used: zero, a weight value within
the balances weighing range, and a weight value at or near the balance’s specified
capacity. The following table shows the sequence in which submenus appear on the
Calibration menu.

CALIBRATION MENU TABLE

Selects span calibration.

Selects linearity calibration.

Used to exit the Calibration menu.

Calibration Menu Protection

Calibration may be locked out to prevent
unauthorized personnel from changing
calibration. To lock out calibration menu,
refer to the section titled Menu Lock-Out
Protection.

NOTE

NOTE: If calibration has been locked out,
you will not be able to access it.

Calibration Masses

Before beginning calibration, make sure
masses are on hand. If you begin calibra-
tion and realize masses are not available,
either turn the balance off, or go through
the procedure without masses. The bal-
ance will use previously stored calibration
data. Calibration should be performed as
necessary to ensure accurate weighing.
Masses required to perform the proce-
dures are listed in the adjacent table.

CALIBRATION MASSES

LINEARITY

SPAN ONLY

MODEL

MASSES

MASS

AS60

20g, 50g

50g

AS120

50g, 100g

100g

AS260D

100g, 200g

200g

AS200

100g, 200g

200g

Masses must meet or exceed ASTM Class 1
Tolerance. Calibration masses are available as
accessories.