Hardy ANY-WEIGH Bench Scales Manuel d'utilisateur télécharger pdf (Page 29)

Chapter 6 - Calibration

6-1

CHAPTER 6 - CALIBRATION

About Calibration of

the DeviceNet, Analog

and Universal Bench

Scales

The DeviceNet and Analog version of bench scales

come pre-calibrated from the factory. For the Univer

sal version make sure it is correctly wired to the

weighing instrument/indicator. Refer to the weighing

instrument/indicator manual for calibration instruc

tions.

C2 Second Generation

Calibration

C2 electronically calibrates a scale system without the

need for test weights. If you are using a Hardy Instru

ments Controller, Indicator or Weigh Module, all

that’s required is to enter a reference point. Refer to

the instrument or module manual for instructions.

Test Weight

Calibration (Hard Cal)

This is the traditional means of calibration requiring

certified class F test weights equal to a minimum of

80% of the rated scale capacity. Additionally three

weights between 10% and 100% of the scale capacity

should be available to check the mid-range. Several

low capacity weights equivalent to one or two instru

ment divisions are necessary to check the system sen-

sitivity.

Material Substitution When certified test weights are not available you can

use an accurately weighed material to calibrate the

system. In this method, a material is weighed on a

secondary, calibrated scale and delivered to the site of

the scale to be calibrated. The secondary calibrated

scale should be of the same accuracy or greater and

have a capacity approximately equal to the scale

being calibrated.

Universal Scales HI

SBU Series

Refer to the weighing instrument or module manual

for calibration instructions. C2

Second Generation

Calibration should only be used with Hardy weighing

instruments.

DeviceNet Scales HI

SBD Series

The ANY-WEIGH DeviceNet Scale series come pre-

calibrated from the factory. If additional dead load is

permanently attached to the scale surface, a recalibra

tion may need to be performed.

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Hardy ANY-WEIGH Bench Scales Manuel d'utilisateur Page 29

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