Denver Instrument Summit Operations Instructions download pdf (Page 15)

15

Calibration and Adjustment

Purpose

Calibration is the determination of

any difference between the measured

value displayed and the true weight

(mass) of a sample. Adjustment is the

correction of this difference, or its

reduction to an allowable level within

maximum permissible error limits.

Using Verified Balancess as Legal

Measuring Instruments in the EU*:

Before using your balance as a legal

measuring instrument, internal cali-

bration must be performed at the

place of installation.

Features

Calibration/adjustment can be

performed only when:

– there is no load on the balance

– the balance is tared

– the internal signal is stable

– for external calibration, the value

displayed for the calibration weight

on the balance does not differ from

the nominal weight value by more

than 2%

If these conditions are not met, an

error message is displayed (“Err 02”).

You can use any of the following

weight units in calibration/adjustment:

Cal.Unit: Grams, Kilogr. or Pounds

(not for verified models)

External Calibration in Verified

Balances

When the balance is used in legal

metrology, external calibration is

blocked as follows:

– The setting of the menu access

switch is locked (see “To block

calibration/adjustment”)

– The cap over the menu access

switch is sealed

To block calibration/adjustment:

– Select Cal.-Adj.: blocked in the

menu

– Close the menu access switch on

the back of the balance

For details on generating an ISO/GLP-

compliant printout of calibration/

adjustment results, see page 45.

Following calibration/adjustment,

the application program is cleared.

Internal Calibration/Adjustment

In the operating menu, select Cal.-

Adj.: Cal.Int. before beginning.

The built-in motorized calibration

weight is applied and removed auto-

matically for internal calibration.

§ Select calibration/adjustment:

Press q

> The built-in weight is applied auto-

matically

> The balance is adjusted

> The built-in calibration weight is

removed.

* Including the Signatories of the Agreement

on the European Economic Area

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