Cardinal CenterPoint DB-SP User manual

3500-0418-0M Rev A • DB-SP Load Cell Kits
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DB-SP
Load Cell Kits
Technical Manual

3500-0418-0M Rev A • DB-SP Load Cell Kits
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3500-0418-0M Rev A • DB-SP Load Cell Kits
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TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Load Cell Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
2
Stand Dimensions – DB-20000SP(S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. .
3
Stand Dimensions – DB-30000SP(S), DB-50000SP(S), DB-
75000SP(S) . . . . . . . .
4
System Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GENERAL INSTALLATION GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
6
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
LOAD CELL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DB-SP Wiring Color Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .
8
JUNCTION BOX WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Load Cell Wiring Color Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. .
9
TRANSIENT SUPPRESSION BOX WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
10
LOAD CELL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
11
PARTS IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
13
Mild Steel and Stainless Steel Stand for DB-20000 Load Cells . . . . . . . . . . . . . . . . 13
Mild Steel and Stainless Steel Stand
for DB-30000, DB-50000, and DB-75000 Load Cells . . . . . . . . . . . . . . . . . . . . . . .
.
15
Serial Number_______________________
Date of Purchase ____________________
Purchased From_____________________
___________________________________
___________________________________
RETAIN THIS INFORMATION FOR FUTURE USE
PRECAUTIONS
Before using this product, read this manual
and pay special attention to all
"NOTIFICATION" symbols:
DANGER!
WARNING!
CAUTION!

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Copyright
All rights reserved. Reproduction or use, without expressed written permission, of editorial or
pictorial content, in any manner, is prohibited. No patent liability is assumed with respect to the
use of the information contained herein.
Disclaimer
While every precaution has been taken in the preparation of this manual, the Seller assumes
no responsibility for errors or omissions. Neither is any liability assumed for damages
resulting from use of the information contained herein. All instructions and diagrams have
been checked for accuracy and ease of application; however, success and safety in working
with tools depend largely upon the individual accuracy, skill, and caution. For this reason, the
Seller is not able to guarantee the result of any procedure contained herein. Nor can they
assume responsibility for any damage to property or injury to persons occasioned from the
procedures. Persons engaging the procedures do so entirely at their own risk.
FCC Compliance Statement
This equipment generates uses, can radiate radio frequency, and if not installed and used in
accordance with the instruction manual, may cause interference to radio communications. It
has been designed within the limits for a Class A computing device pursuant to Subpart J of
Part 15 of FCC rules to provide reasonable protection against such interference when
operated in a commercial environment. Operation of this equipment in a residential area may
cause interference in which case the user will be responsible to take whatever measures
necessary to correct the interference.
You may find the booklet “How to Identify and Resolve Radio TV Interference Problems”
prepared by the Federal Communications Commission helpful. It is available from the U.S.
Government Printing Office, Washington, D.C. 20402. Request stock No. 001-000-00315-4.

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INTRODUCTION
Cardinal Scale’s DB-SP CenterPoint load cell heavy-capacity mounting kits utilize the time-
tested and reliably proven model DB double-ended stainless steel load cells that feature a
center load design. The stands are available in either stainless steel or mild steel powder-
painted industrial tan and they bolt directly to the floor and tank. The DB-SP’s environmentally
sealed load cells are NTEP, OIML, and VCAP certified for quality and accuracy. The DB-SP
CenterPoint load cell kits are perfect for mixing, blending, batching, inventory control, and
general weighing. Combine them with one of Cardinal’s state-of-the-art 200 series weight
indicators for a complete digital weighing system.
The DB-SP CenterPoint series feature stainless steel, environmentally sealed, center-load,
pin-mount, double-ended shear beam load cells, with standard system capacities that range
from 60,000 to 300,000 lbs (27,000 to 136,000 kg).
This manual should be studied thoroughly before attempting to install the load cell kit and must
be used in conjunction with certified drawings of the particular scale being installed.
In case of conflict, the certified drawings will govern.
Safety should always be the prime consideration during all phases of the installation. Failure to
comply with the instructions in this manual will void all warranty implied or stated.
All systems need to be safety-checked or chained to prevent failure. A qualified engineer
should be consulted that has determined that the vessel to be used is structurally sound and
capable of being supported by three or four points when filled to capacity.

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SPECIFICATIONS
Specification
Description
Load Cell Model: DB series
Load Cell Type: Stainless steel, center-load, double-ended shear beam load
cells
Load Cell Protection Class:
IP68
Load Cell Capacities:
20,000 lb (9,070 kg) up to 75,000 lb (34,000 kg)
Load Cell Cable: 30 ft / 9 m
Stand Type:
Bolt-in-place design with leveling screws
Stand Construction:
Stainless steel or powder-painted mild steel
Junction Box Type: Stainless steel 4-cell trim box
Junction Box Cable Length
to Indicator: 30 ft / 9 m with 9-pin D connector
Included: Each kit consists of three or four stand assemblies, load cells,
load cell stands, stainless steel NEMA 4 junction box, and load
cell cable.
System Capacities: Standard Capacities range from 60,000 lb (27,000 kg) up to
300,000 lb (136,000 kg)
Indicators: A wide selection of digital weight indicators are also available
from Cardinal Scale
Weighing Applications: Tanks, hoppers, silos, and bins. New installations or existing
conversions
Load Cell Certifications:
NTEP, OIML, and VCAP
Load Cell Capacities
MODEL CONSTRUCTION CAPACITY SHIPPING
WEIGHT
DB-20000SP Stainless Steel 20,000 lb / 9,070 kg 18 lb / 8.2 kg
DB-30000SP Stainless Steel 30,000 lb / 13,605 kg 18 lb / 8.2 kg
DB-50000SP Stainless Steel 50,000 lb / 22,700 kg 18 lb / 8.2 kg
DB-75000SP Stainless Steel 75,000 lb / 34,000 kg 18 lb / 8.2 kg

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SPECIFICATIONS, CONT.
Stand Dimensions – DB-20000SP(S)

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SPECIFICATIONS, CONT.
Stand Dimensions – DB-30000SP(S), DB-50000SP(S), DB-75000SP(S)

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SPECIFICATIONS, CONT.
System Capacities
3 Load Cell Systems | Mild Steel Stands
MODEL LOAD CELL
CONSTRUCTION
LOAD CELL
CAPACITY
SYSTEM
CAPACITY
SHIPPING
WEIGHT
DB-20000SP-3 Stainless Steel 20,000 lb / 9,070 kg 60,000 lb / 27,215 kg 94 lb
DB-30000SP-3 Stainless Steel 30,000 lb / 13,605 kg 90,000 lb / 40,825 kg 343 lb
DB-50000SP-3 Stainless Steel 50,000 lb / 22,700 kg 150,000 lb / 68,040 kg 343 lb
DB-75000SP-3 Stainless Steel 75,000 lb / 34,000 kg 225,000 lb / 100,000 kg 343 lb
3 Load Cell Systems | Stainless Steel Stands
MODEL LOAD CELL
CONSTRUCTION
LOAD CELL
CAPACITY
SYSTEM
CAPACITY
SHIPPING
WEIGHT
DB-20000SPS-3 Stainless Steel 20,000 lb / 9,070 kg 60,000 lb / 27,215 kg 94 lb
DB-30000SPS-3 Stainless Steel 30,000 lb / 13,605 kg 90,000 lb / 40,825 kg 343 lb
DB-50000SPS-3 Stainless Steel 50,000 lb / 22,700 kg 150,000 lb / 68,040 kg 343 lb
DB-75000SPS-3 Stainless Steel 75,000 lb / 34,000 kg 225,000 lb / 100,000 kg 343 lb
4 Load Cell Systems | Mild Steel Stands
MODEL LOAD CELL
CONSTRUCTION
LOAD CELL
CAPACITY
SYSTEM
CAPACITY
SHIPPING
WEIGHT
DB-20000SP-4 Stainless Steel 20,000 lb / 9,070 kg 80,000 lb / 36,280 kg 124 lb
DB-30000SP-4 Stainless Steel 30,000 lb / 13,605 kg 120,000 lb / 54,420 kg 456 lb
DB-50000SP-4 Stainless Steel 50,000 lb / 22,700 kg 200,000 lb / 90,800 kg 456 lb
DB-75000SP-4 Stainless Steel 75,000 lb / 34,000 kg 300,000 lb / 136,000 kg 456 lb
4 Load Cell Systems | Stainless Steel Stands
MODEL LOAD CELL
CONSTRUCTION
LOAD CELL
CAPACITY
SYSTEM
CAPACITY
SHIPPING
WEIGHT
DB-20000SPS-4 Stainless Steel 20,000 lb / 9,070 kg 80,000 lb / 36,280 kg 124 lb
DB-30000SPS-4 Stainless Steel 30,000 lb / 13,605 kg 120,000 lb / 54,420 kg 456 lb
DB-50000SPS-4 Stainless Steel 50,000 lb / 22,700 kg 200,000 lb / 90,800 kg 456 lb
DB-75000SPS-4 Stainless Steel 75,000 lb / 34,000 kg 300,000 lb / 136,000 kg 456 lb

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GENERAL INSTALLATION GUIDELINES
1. The mounting surface for the base plate and top plate must clear of debris and rough spots
and be level within ± 0.5 degrees to minimize side loads and extraneous forces. If the
mounting surfaces are not level, the base plate has four leveling screws that can be
adjusted up or down as necessary to level the module. Because deflections in legs and
supporting structures may cause additional side forces that greatly affect accuracy, check if
level and plumb again when the container is fully loaded. Cross-bracing of legs or other
support structures may need reinforcement to correct this. Deflections of the module’s top
or base plate due to loading should not exceed ± 0.5 degrees.
2. Mounting systems use three or four mounts. The load on each mounting assembly should
vary by no more than 20 percent. Add shims where necessary to achieve correct load
distribution.
3. During installation, dummy load cells can be used to prevent overload damage.
NOTE: If the actual load cells are used during the installation, extreme care must
be taken to prevent overload damage. A tank or hopper weighing several tons
can exert huge forces when dropped only a fraction of an inch.
4. All piping or conduit should be horizontal and flexible. If flexible piping is not used, make
sure the distance from the tank to the first pipe support is 20-30 times the pipe diameter. In
smaller, lower-capacity tanks and hoppers, isolating resultant forces becomes extremely
critical. When possible, flexible conduit piping should be used close to the tank instead of
the rigid variety.
5. Load cells should not be installed in the modules until all welding is completed. If possible,
use a dummy load cell when welding to maintain the finished height. If welding is
unavoidable after load cell installation, ground in such a manner as to prevent welding
current from passing through the load cell. Ground the welder as closely as possible to the
point of welding.