The Leader in Force Measurement
INTERFACE • 7401 E. Butherus Drive, Scottsdale, AZ 85260 • PHONE: (480) 948-5555 • FAX: (480) 948-1924
www.interfaceforce.com
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JunctionBox
Rev B
05/21/18
4. Zero the indicator and place calibrated test weights over each load cell in turn.
The amount of test weights to be used will depend on the scale configuration; for
specific recommendations, refer to Handbook 44 Field Manual, published by the
Institute for Weights and Measures. For a four-
cell platform, it’s recommended
using 25% of scale capacity.
5. Record the value displayed on the indicator after the test weight is placed in turn
on each corner (directly over the load cell) without allowing the weight to
overhand the sides. Allow the scale to return to zero each time to check for
friction or other mechanical problems. Select the load cell which has the lowest
value as your reference point. This cell will not be trimmed.
6. Replace the same test load over each cell in turn. Using the corresponding
potentiometer, trim each cell down to equal the reference load cell. As corner
corrections are somewhat interactive, check all cells again for repeatability. If
necessary, repeat steps 4 and 5.
7. Pull excess cable out of the enclosure and tighten the cord grip assemblies with
a wrench. To be watertight, each cord grip must be tightened so the rubber
sleeve begins to protrude from the hub.
8. Unused hubs must be properly plugged to prevent moisture entry. If extra hole
plugs are needed please consult factory.
9. Remove the desiccant from the plastic bag, and insert the desiccant bag into the
junction box before closing. Inspect the desiccant during normal service and
change desiccant as needed.
10. Replace the cover and tighten the cover screws in an alternating pattern to be
certain the gasket is compressed equal in all locations.
