Hardy Process Solutions HI 1769-WS, Operation And Installation Manual

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HI 1769-WS/HI-1769-2WS WEIGH SCALE MODULE
5-4
FIG. 5-2 MILLIVOLTS/WEIGHT SCALE
f. Based on the example, the operating
range for this scale is 5-10 mVDC with
a 500 pound weight range. Understand
that after zeroing the instrument, the 0
reading refers to the zero reference point
and not absolute 0 mVDC or absolute 0
weight.
NOTE: Load cell/point measurements are checked with a dig-
ital volt meter at the J1 connector on the front of the
module or by using I
NTEGRATED
T
ECHNICIAN
with the
HI 215IT Junction Box.
Load Check
Step 1. Place a load (weight) on the scale or ves-
sel.
Step 2. Check to see if the weight reading changes
on the ladder logic display in the proper
direction.
• For example: If the ladder logic dis-
play reads 100 pounds and a 20 pound
weight is placed on the vessel or