Installation
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3
2.0
Installation
This section provides an overview of the Benchmark HD installation procedure and grounding information.
2.1 Unpacking the Benchmark
Immediately after unpacking, visually inspect the Benchmark HD to ensure that the unit is undamaged. The shipping carton
should contain the bench scale and this manual. If the scale was damaged in shipment, notify Rice Lake Weighing Systems
and the shipper immediately.
2.1.1 Leveling the Scale
Place the scale in the desired location. Lift off the deck cover and locate the bubble level (
).
Figure 2-1. Top Plate Removed Showing Bubble Level Location
Adjust the four corner feet until the scale is level and all feet contact the support surface, so that the scale does not rock.
Lock the jam nuts on the feet when the final level is correct.
2.2 Connecting the Load Cell Cable
The Benchmark HD comes with a standard 10' of color-coded load cell cable.
The load cell is temperature compensated for an exact length of 10'.
Do not cut the load cell cable.
See the indicator manual to determine the proper load cell cable input connectors. Use the following color codes to wire the
load cell cable. Once complete, install the top cover for the bench scale back onto the scale.
2.3 Grounding the Scale Base
Bench scales can build up static electricity charge during weighing operations. If powerful enough, this charge can travel
through the load cell cable to the indicator. To prevent this, all bench scales should be adequately grounded so that static
charges and transient electrical surges can drain directly to the ground. A recommended practice is to connect the scale base
to an AC ground circuit using at least #12 wire. All Benchmark series scales have either a grounding screw or a hole for such a
grounding screw located on the bottom of the lower frame for this purpose.
6-Wire Color Code
Function
Red
+ Signal
White
- Signal
Green
+ Excitation
Black
- Excitation
Blue
+ Sense
Yellow
- Sense
Table 2-1. Load Cell Wiring
Bubble Level Location
Benchmark HD Deck Cover
IMPORTANT
