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BenchMark SLHE
User Manual
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Rice Lake BenchMark SLHE User Manual

®
BenchMark Series
Single Point Bench Scales
Technical Manual
22125 Rev D
Contents
Technical training seminars are available through Rice Lake Weighing Systems. Course descriptions and dates can be viewed at www.ricelake.com/training or obtained by calling 715-234-9171 and asking for the training department.
1.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 10" x 10" and 12" x 12" SL Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 12", 18" and 24" Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 12" x 18" Stainless Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5.1 10" x 10" and 12" x 12" SL Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5.2 12" x 18" Stainless Steel Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5.3 12", 18" and 24" Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Leveling Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Connecting the Load Cell Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Grounding the Scale Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5.1 10"x10" and 12"x12" SL Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2 12", 18", and 24" Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.3 Installing Protective Clamshells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 10" x 10" and 12" x 12" SL and SL/HE Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.2 12" x 12" and 12" x 18" Models, Mild Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.3 12" x 18" Model, Stainless Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.4 18" x 18", 18" x 24" and 24" x 24" Models, Mild and Stainless Steel . . . . . . . . . . . . . . . . . . . . . . . . . 17
© Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Specifications subject to change without notice.
Rice Lake Weighing Systems
is an ISO 9001 registered company.
October 23, 2014
Contents i
ii Benchmark Series Single Point Bench Scales
Rice Lake continually offers web-based video training on a growing selection of product-related topics at no cost. Visit www.ricelake.com/webinars.

1.0 Introduction

Important
WARNING
WARNING
Congratulations on choosing a scale from the BenchMark™ series, the highest-quality single-point benchtop scale available. The following types of NTEP-approved BenchMark scales are available:
Authorized distributors and their employees can view or download this manual from the Rice Lake Weighing Systems distributor site at: www.ricelake.com
• The light-capacity SL series featuring stainless steel construction in 10"x10" and 12"x12" platforms with capacities from 5 lb to 100 lb.
• A mid-range model with a 12"x18" platform and a cover and This model is available in capacities from 50 lb to 100 lb.
• The medium-capacity series is construc
ted with stainless steel covers, and mild steel—or optional stainless steel—frame construction. This series is available in sizes from 12" x 12" up to 24" x 24" in capacities from 30 lb to 1,000 lb. This manual covers each scale series.
One exciting feature of the BenchMark series is its ability to be converted into a checkweigher and head from a CW-80 CheckWeigher to your BenchMark scale, the features of a checkweigher are available to you. Contact your Rice Lake Weighing Systems distributor for more information.

1. 1 S af et y

Safety Symbol Definitions:
Indicates a potentially hazardous situation that, if not avoided could result in death or serious injury, and includes hazards that are exposed when guards are removed.
Indicates information about procedures that, if not observed, could result in damage to equipment or corruption to and loss of data.
frame that are constructed of stainless steel.
. By adding the neck
General Safety
Do not operate or work on this equipment unless you have read and understand the instructions and warnings in this manual. Failure to follow the instructions or heed the warnings could result in injury or death. Contact any Rice Lake Weighing Systems dealer for replacement manuals. Proper care is your responsibility.
Failure to heed may result in serious injury of death. DO NOT allow minors (children) or inexperi DO NOT operate without all shields and guards i DO NOT jump on the scale. DO NOT use for purposes other then weight taking. DO NOT place fingers into slots or possible pinch points. DO NOT use any load bearing component that i DO NOT use this product if any of the components are cracked. DO NOT exceed the rated load limit of the unit. DO NOT make alterations or modifications to the unit. DO NOT remove or obscure warning labels. Before opening the unit, ensure the power cord is disconnected from the outl Keep hands, feet and loose clothing
enced persons to operate this unit.
n place.
s worn beyond 5% of the original dimension.
away from moving parts.
et.
Introduction 1

1.2 10" x 10" and 12" x 12" SL Models

Overload Protection Springs
Lift up Protection Screw
Overload Protection Screw
All seven models of the 10" x 10" and 12"x12" SL series have stainless steel covers and frame systems. All models use a single point load cell. The 10, 20, 30, 50, and 100 lb models come standard with a potted single point load cell that offers extra protection against water infiltration but is not designed for washdown use. The 30, 50, and 100 lb models can also be supplied with an RL1140 stainless steel load cell. Extra load cell protection is also available in optional stainless steel “clamshells” which enclose the load cell. See Section 5.0 for information about clamshell installation. All load cells come with
The SL series scales use a sensitive 4-point, spring-plate suspension to minimize shock and overload damage susceptible of light-capacity scales. The system uses a bolt and an overload protection spring at each of four loading points beneath the top cover (see Figure 1-1). Each spring is set for a specific tension so that it will compress to prevent overload damage. If a potentia at that corner compresses. When the spring compresses, the load is taken off the load cell. This eliminates the possibility of overloading the load cell. Likewise, if a load more than 150% of total capacity is placed anywhere on the deck, the springs will compress and remove the load from the load cell.
In addition to the overload protection spring, the SL models inc beneath the load cell to help prevent overload damage.
To protect the load cell from being acciden spider, a lift up protection screw is incorporated into the design (see Figure 1-2).
10 feet of cable.
Figure 1-1. Overload Springs
lly damaging load is placed on a corner of the scale, the spring
orporate a load cell overload protection screw
tally forced upward and damaged by improperly lifting the scale by the
2 Benchmark Series Single Point Bench Scales
Figure 1-2. Lift up Protection Screw

1.3 12", 18" and 24" Models

Top Frame
Overload Protection Screw
Overload Stops
Larger models in the series use mild steel frames and stainless steel deck covers for light washdown with a damp sponge. All models are available with mild steel or optional stainless steel underbody frame construction. The standard load cell is a single point load cell. Options include a stainless steel RL1140 load cell for 12" x 12" and 12" x 18" models and protective stainless steel clamshells for all models using a single point load cell. All load cells come with 10 feet of cabling.
Figure 1-3. 12" x 12" With Overloads
These medium-capacity bench scales provide overload protection for the load cell by positive stops located beneath each corner of the top frame (see Figure 1-3). These stops are set at the factory for 100% of scale capacity Additional overload protection is provided by damage.
an overload screw beneath the load cell to help prevent shock
.

1.4 12" x 18" Stainless Steel

The 12" x 18" model has a stainless steel cover and underbody frame to meet USDA requirements and make it ideal for washdown use. The 12" x 18: comes standard with a single point load cell; a stainless steel load cell is optional for both the 50 lb and 100 lb models. Extra load cell protection is available with the optional stainless steel “clamshell” that encloses the load cell. See Section 5.0 for information about clamshell installati come with 10 feet of cabling.
These medium capacity bench scales provide overload protec of the top frame. These stops are set at the factory for 100% of scale capacity. Additional overload protection is provided by an overload screw beneath the load cell to help prevent shock damage.
tion with positive stops located beneath each corner
on. All load cells
Introduction 3

1.5 Specifications

1.5.1 10" x 10" and 12" x 12" SL Models

Load Cell: Potted single point
(5 lb is not potted) Potted single point, stainless steel load
cell cell optional on 30, 50, and 100 lb
models
Rated Output: 0.91 mV/V Maximum Overload: 200% Overload Protection: Spring loaded spider Cable Length: 10 ft. (3 m) – 6 wire shielded Output Impedance (ohms): 350 Compensated Temperature Range: -10°C/14°F to +50°C/122°F Safe Temperature Range:-30°C/-22°F to +70°C/158°F Dimensions/Capacities:

1.5.2 12" x 18" Stainless Steel Model

Load Cell: Potted single point
Potted single point, stainless steel load cell
optional on 50 lb and 100 lb models
Rated Output: 0.91 mV/V Maximum Overload: 200% Overload Protection: 5 point, independently adjusted Cable Length: 10 ft. (3 m) – 6 wire shielded Output Impedance (ohms): 350 Compensated Temperature Range: -10°C/14°F to +50°C/122°F Safe Temperature Range:-30°C/-22°F to +70°C/158°F Dimensions/Capacities:

1.5.3 12", 18" and 24" Models

Load Cell: 12"x12" and 12"x18":
Potted single-point
18"x18", 18"x24" and 24"x24": Overload Protection: 5 point, independently adjusted Cable Length: 10 ft. (3 m) – 6 wire shielded Rated Output: 0.91 mV/V Output Impedance: 350 Maximum Overload: 200% Compensated Temperature Range: -10°C/14°F to +50°C/122°F Safe Temperature Range:-30°C/-22°F to +70°C/158°F Dimensions/Capacities:
Size Capacity Height
10" x 10"/ 254mm x 254mm
5 lb / 2.3 kg 3.15" / 80 mm
10 lb / 4.5 kg 3.15" / 80 mm
20 lb / 9.1 kg 3.15" / 80 mm
30 lb / 13.6 kg 3.15" / 80 mm
12" x 12"/ 305mm x 305mm
30 lb / 15 kg 3.25" / 92 mm
50 lb / 25 kg 3.25" / 92 mm
100 lb / 50 kg 3.25" / 92 mm
Table 1-1. 10" x 10" and 12" x 12" SL Model Sizes
Size Capacity Height
12" x 18" / 305mm x 457mm
50 lb / 25 kg 4.00" / 102mm
100 lb / 50 kg 4.00" / 102mm
Table 1-2. 12" x 18" Stainless Steel Model Sizes
Size Capacity Height
12" x 12" / 305mm x 305mm
30 lb / 13.6 kg 3.62" / 92mm
50 lb / 25 kg
100 lb / 50 kg
12" x 18" / 305mm x 457mm
50 lb / 25 kg 3.62" / 92mm
100 lb / 50 kg
18" x 18" / 457mm x 457mm
50 lb / 25 kg 5.25" /
133mm
100 lb / 50 kg
150 lb / 75 kg
200 lb / 100 kg
250 lb / 125 kg
300 lb / 150 kg
500 lb / 250 kg
1000 lb / 500 kg
18" x 24" / 457mm x 610mm
50 lb / 25 kg 5.25" /
133mm
100 lb / 50 kg
150 lb / 75 kg
200 lb / 100 kg
250 lb / 125 kg
300 lb / 150 kg
500 lb / 250 kg
1000 lb / 500 kg
24" x 24" / 610mm x 610mm
100 lb / 50 kg 5.25" /
133mm
150 lb / 75 kg
200 lb / 100 kg
250 lb / 125 kg
300 lb / 150 kg
500 lb / 250 kg
1000 lb / 500 kg
Table 1-3. 12", 18, and 24" Model Sizes
4 Benchmark Series Single Point Bench Scales
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