Hardy HI 1746-WS - Manual (Page 61)

Chapter 5 - Calibration
5-1
CHAPTER 5 - CALIBRATION
A Brief Description of
Chapter 5 Chapter 5 pertains to the calibration procedures for
the HI 1746-WS Weigh Scale Module. Alternatives to
any procedures either implied or explicitly contained
in this chapter are not recommended. In order for the
Weigh Module to work properly, it must be calibrated
prior to operation. Calibration procedures require an
understanding of the M File interface. It is recom-
mended that the module be re-calibrated periodically
or when not in use for extended periods of time. Be
sure to follow all the procedures completely to insure
that the weights read by the module are accurate. It is
very important that the user and service personnel be
familiar with the procedures contained in this chapter,
before installing or operating the HI 1746-WS Weigh
Module.
Pre-Calibration
Procedures Step 1. Check to determine if the load cells have
been properly installed.
a. Refer to your load cell I&M manual for
proper installation instructions.
b. On some single and double ended shear
beam load cells there is an arrow that
indicates the direction of the applied
load. If the arrow is pointing in the
wrong direction, change the position of
the load cell so that it is mounted in the
direction of the applied load.
Step 2. Check for Binding on the Load Cell or
other parts of the weighing system.
CAUTION: BINDING ON A SCALE/VESSEL OR LOAD
CELL DOES NOT ALLOW THE LOAD CELL
FREE VERTICAL MOVEMENT AND MAY PRE-
VENT THE INSTRUMENT FROM RETURNING
TO THE ORIGINAL ZERO REFERENCE
POINT.
a. A load cell must be mounted in such a
way that 100% of the load (Vessel w/