B-TEK Scales Centurion-DT User manual

PRESENTED BY
JPBOWLIN.COM
817.332.8116
J.P. Bowlin is a quality-driven Calibration Company
that has provided calibration, repair and sales
of all types of weighing and measurement products since 1931.

2014 Centurion Installation Manual
06/2014
Centurion Truck Scale
Includes Models:
Centurion–DT
Centurion-DT-CD
Centurion-AT
Centurion-AT-CD
Hybrid-DT
Hybrid-AT
Installation Manual

2
Contents
Introduction Page 3
BeforeInstallation Page4
Choosing a Site Page 5
Site Preparation / Foundation Page 7
Unpacking Page 8
Installation Page9
Locating Plate Page 14
Module Assembly Page 15
Conduit Installation Page 18
Center Deck Panel and Clip Installation Page 19
Lifting Modules into Place Page 20
Connecting Modules Page 23
Concrete Deck Scales Preparation Page 28
Adjusting the Checking Page 31
Replacing the Dummy Load Cell Stands Page 32
Aligning the Load Cells Page 34
Connecting the Grounding Cables Page 36
Load Cell Cable Wiring Page 38
Maintenance Page42
SpareParts Page43

3
Introduction
This manual is meant as an installation guide for the B-TEK Centurion and Hybrid
series of motor truck scales. This includes the following models:
Centurion-DT (steel deck, digital cell)
Centurion-DT-CD (concrete deck, digital cell)
Centurion-AT (steel deck, analog cell)
Centurion-AT-CD (concrete deck, analog cell)
Hybrid-DT (steel deck, digital cell)
Hybrid-AT (steel deck, analog cell)
The Centurion series of flat top truck scales is available in standard lengths from 10’ to
120’, and varying widths from 10’ to 14’. Depending on how it was ordered, the
individual scale modules can arrive from the factory partially or fully assembled. This
manual attempts to cover all instances.
All models fall under the NTEP certificate of conformance number 03-096A3.
No physical or electrical changes / alterations may be made to the scale during
installation, which may void the warranty. This includes removal, addition or
modification of any steel or components, as well as electrical or program related items.
Check with the local Weights and Measurements authority prior to installation to verify
that the foundation meets all requirements, including those of the National Institute of
Standards and Technology (NIST) and specifically Handbook 44.
Prior to installation it is the customer’s responsibility to verify that the equipment meets
the requirements of the application. Do not begin installation if this is unknown. It is the
customer’s responsibility to ensure that the scale equipment is operated within the
manufacturer’s specifications.
Any repairs must be performed by B-TEK Scales authorized service technicians.
Failure to comply with this policy voids all implied and/or written warranties.
General safety warnings are as follows:
 The scale is designed for vehicular traffic only, do not allow any pedestrian traffic
on the scale
 Do not get out of your vehicle while on the scale
 Keep all hands, feet and clothing away from moving parts
 Do not exceed the specified load limit for the scale
 Do not use the scale for any other purpose than weight measurement
 Use caution when removing snow or other debris from scale deck or beneath the
scale modules

4
Before Installation
Prior to installation verify the following:
 The scale design will meet the customer’s application correctly
 The scale is located so that vehicles can enter and exit easily
 There will be sufficient drainage of water from the scale area
 The approaches on both ends are level and meet the requirements of NIST
Handbook 44, requiring that the first 10’ is on the same plane of the platform
 Do not locate electrical components near any items with magnetic material.
Additionally, do not locate indicators in direct sunlight or in areas subject to extreme
temperature changes as this may affect the accuracy of the weighing.
 You have a copy of the scale and foundation drawings specific to this installation on
site at the time of installation
 You have a copy of this manual on site at the time of installation
 The foundation concrete has had a full twenty-eight day period for proper curing
 All installation and calibration adjustments required for the scale to perform to its
specified accuracy and operation are considered to be part of the standard scale
installation.
 Installations that cannot be finished in one session must ensure that proper signage
and barriers are in place to prevent use of the scale until fully operational

5
Choosing a Site
The first step in installing the scale is to choose an appropriate site. Pertinent steps in
choosing the site are:
- Ensure that the site has adequate approaching / exiting distance to comply with state
and local Weights and Measures regulations. Scale length and scale elevation
(maximum fall per foot allowance) will impact the total area requirement.
The site selected must meet state and local requirements. The following is taken directly
from Handbook 44 (H-44) issued by the National Institute of Standards and Technology.
UR.2.6. Approaches
UR.2.6.1., Vehicle Scales - On the approach end or ends of a vehicle scale installed
in any one location for a period of six months or more, there shall be a straight
approach as follows:
(a) The width at least the width of the platform, and
(b) the length at least one-half the length of the platform but not required to be more
than 40 feet, and
(c) not less than 10 feet of any approach adjacent to the platform shall be constructed
of concrete or similar durable material to insure that this portion remains smooth
and level and in the same plane as the platform. However, rating of sufficient
strength to withstand all loads equal to the sectional capacity of the scale may be
installed in this portion. Any slope in the remaining portion of the approach shall
insure, 1) ease of vehicle access, 2) ease for testing purposes, and 3) drainage
away from the scale.
The scale drawings provided meet part (a) of this requirement. The site must be
located to meet parts (b) and (c).
The site should have adequate room for trucks to properly align with the platform before
pulling on. This is especially important if trucks must turn before driving onto the scale.
Trucks should remain on the scale for a period of time no longer than is necessary for
obtaining the vehicle weight. Drivers / passengers / pedestrians should not exit their vehicles
or use the scale platform as a walkway.
Some jurisdictions require that the scale platform be clearly visible from the location of the
scale instrument. Others will allow the use of closed circuit TV or even a voice intercom.
Obtain official approval before starting construction.

6
- Check all state and local Weights and Measures requirements before breaking
ground to ensure compliance with all regulations.
- Obtain all necessary permits for construction.
- Check all public utilities to ensure that your site is free of underground lines, pipes or
hoses.
- Have assurance that the soil at the site is capable of withstanding a minimum
pressure of 3,000 psf or as specified on the B-TEK, Inc. drawing / print.
- Make sure the site does not intersect existing drains or utilities.
- All surrounding areas must drain away from the scale site.
- Ensure that all overhead objects (i.e. power lines, lights) do not interfere with
unloading and setting the scale modules with a crane.

7
Site Preparation / Foundation
Check and review all blueprints prior to starting work. Steps to follow include:
- Use only the latest engineering drawing sent with the scale order.
- Using a transit, locate the stakes where the scale foundation will be
constructed.
- Excavate to the specified elevation on the drawing / print to comply with the desired
finished scale elevation.
- Construct forms and make sure they are square, plumb, and level.
- Foundation must be accurate to the blueprints within specified tolerances.
The foundation must comply with the blueprint to have an acceptable installation.
- Position cut-to-length rebar into the foundation forms as per illustrations noted on
the B-TEK Scales drawings. (Rebar conforming to ASTM 615 Grade 60 is
recommended.)
- Concrete of 4,000 psi compressive strength is required for the foundation, and piers,
if used.
- The base plates, which support the load cells, are designed to be anchored to the
foundation (or pier) by using expansion bolts placed in concrete after curing.
- B-TEK Scales recommends the use of 3/4” X 7” length expansion bolts, which
provide greater flexibility, to ensure proper positioning of the scale.
- All concrete work must meet standards set forth by the American Concrete Institute
Code.
- Allow the concrete foundation time to cure before erecting the scale. Insufficient
curing time of concrete may result in damage to the structural integrity of the scale
foundation.

8
Unpacking
Unload the shipping crate of scale components prior to unloading scale platform
modules from the truck to verify you have everything included on the packing list.
Open all boxes for individual equipment pieces and perform a physical inspection to be
certain all components are present and have not been damaged during shipping. Any
parts that are missing or damaged must be reported immediately to qualify for warranty
replacement. Digital photos that can be e-mailed are extremely helpful.
The components included in your Centurion or Hybrid truck scale “package” will
include: weighbridge modules, weighbridge connection fasteners, load cells and load
cell base plates, locating plates, shims, load cell cables, bumper checking assemblies,
conduit, and junction boxes with terminal boards. An indicator, printer, surge protection
equipment, and 50’ of home run cable is included with digital Centurion models.
Foundation drawings and an installation manual is included with all scales. Concrete
deck Centurions will include deck sheeting and rebar preinstalled at the factory.
Your Centurion truck scale “package” does not include foundation components such as
concrete, rebar, mesh, forms, deck coping, etc., freight charges, transportation and
permit fees, or material handing and crane fees.

11
Note that the foundation base plates will be a combination of basic plates and combination
plates that have the checking assemblies included as shown below.
BASIC BASE PLATE
COMBINATION BASE PLATE
with SIDE CHECKING (four per scale)

12
For each load cell in the scale, a load cell mount kit will be provided. It consists of the
following:
 Lower receiver
 Upper Receiver
 1/8” thick ring plate
 (2) 1/16” thick shim plates
 Isolation disc
 Debris foam ring
 (2) grounding straps
 (1) bag containing anti-rotation pin
 (1) bag of plate hardware
Note that scale height dimension shown on the supplied drawings include the 1/8” ring
plate and both 1/16” shim plates in the overall stack height. Should additional height
need to be made up, an additional 1/8” shim, part #100-61071, is included for each
load cell location.
Load Cell Mount Kit
DEBRIS FOAM
RING
LOWER RECEIVER
ISOLATION RING
RING PLATE
UPPER RECEIVER
GROUNDING
STRAPS
SHIM PLATES
PLATE
HARDWARE
ANTI-ROTATION
PIN

13
It is recommended to layout all foundation base plates prior to permanently anchoring
to the foundation.
Set the foundation plates in place. Do not secure the plates to the foundation at this
time.
Ensure that the foundation base plates are all level with each other. Shim plates for
use on the top of the foundation base plates are included.
Shim plates are 1/8” in thickness and are meant to make up minor differences in
height. The acceptable height tolerance between all base plates is +/- 1/8”. Verify with
a laser level or transit
If the amount of the difference in height between the base plates cannot be made up
with the use of the shim plates alone, use non-shrinking grout under the base plate to
bring them uniform in height and/or level with the other base plates.

14
Locating Plate
Secure the load cell locating plates to the foundation base plates using the included
hex head bolts (2) M12 X 40mm and (1) M8 X 40mm, lock nuts and flat washers.
Starting with the first 4-cell module locating plates, place a dummy load cell assembly
into the base ring of each locating plate.
locating plate
locating plate with dummy cell
multi-platform style base plate with dummy cell
dummy
cell

15
Module Assembly (if required)
The individual weighbridge modules may have been specified to be shipped to the
installation site already assembled. If not, they must be bolted together prior to being
placed into / onto the foundation. In addition, if not pre-assembled at the factory the
conduit will have to be placed in the module prior to installation.
Concrete deck scales will have the outside module concrete sheeting and rebar
installed at the factory. Scales being bolted together on site will need the center
module sheeting and rebar installed.
side module concrete sheeting and rebar
center module concrete sheeting and rebar

16
Module Assembly (continued)
The left and right halves of weighbridge modules will be bolted together through their
respective connection plates. Be sure that the modules being bolted together are
matching pairs and have the same type of load cell support ends.
First insert (2) 1/2”-13 X 2-1/2” long bolts into the smaller holes to help in aligning the
connection plates. The hex nuts can be added and can be hand tightened at this point.
Insert the 7/8”-9 X 3” connection bolt, lock washer and hex nut into each of the larger
holes on the connection plates. Concrete deck Centurions will use (8) large bolts per
connection plate, while the steel deck versions will use (10).
Hand tighten all bolts until all have been inserted, at which time tightened all to a
minimum of 175 ft. lbs.

17
steel deck connection plates
top view of concrete deck connection plates

18
Conduit Installation
If not ordered as pre-assembled at the factory, the conduit for cable runs must be
installed in the weighbridge. The lengths of conduit will be bundled together with your
“scale package” and can be inserted thru the lifting lugs located on the inside of either
of the module halves. The conduit can be run thru the inside lugs of either module, but
is not needed on both sides.
Module half with conduit run thru inside lifting lugs
The “bell portion” of the poly conduit can be pushed snuggly into the thru hole of the
module’s end plate to secure it in place.
CONDUIT
INTERIOR
LIFTING LUG

19
Center Deck Panel and Clip Installation
Steel deck Centurions, 11’ and wide utilizes center deck panels between the left and
right connected halves. These cover plates are secured by use of a deck panel clip
(#100-60084) and cap screw (#HW-B-1/2-13X1.5SHCS) which are tightened against a
panel tube inside the scale module.
The clip must be oriented as shown below during install. It will rotate 90º clockwise
when tightened and rides up on the panel tube, and will secure against beam inside of
the scale module.
CLIP & BOLT
INSERT CLIP
AND
THREAD INTO
BOLT
COUNTERBORED
HOLE IN PLATE
CLIP WILL
TURN
CLOCKWISE
PANEL
TUBE
CLIP WILL
STOP
AT 90º