Hardy HI LPRE05 User Manual
HI HLPS SERIES
LOAD POINT ASSEMBLIES
OPERATION AND INSTALLATION
MANUAL
Corporate Headquarters
9440 Carroll Park Drive, Suite 150
San Diego, CA 92121
Phone: (858) 278-2900
FAX: (858) 278-6700
Web-Site: http://www.hardysolutions.com
Hardy Process Solutions Document Number: 0596-0237-01 Rev G
Copyright 1999-2013 Hardy Process Solutions All Rights Reserved. Printed in the U.S.A. (941028)
Local Field Service
Hardy has over 200 field technicians in the U.S., and more positioned throughout the
world to assist you in your support needs. We also have factory engineers who will
travel to your facility anywhere in the world to help you solve challenging applica
tions. We're ready to support you with:
• Installation and start-up
• Routine maintenance and certification
• Plant audits and performance measurement
• Emergency troubleshooting and repair
To request Emergency Service and Troubleshooting, Start-up, Installation, Calibration, Verification or to discuss a Maintenance Agreement please call 800-821-5831
Option 4 or Emergency Service after hours (Standard Hours 6:00 AM to 5:30 PM
Pacific Standard Time) and weekends 800-821-5831 Option 4.
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Outside the U.S
Hardy Process Solutions has built a network of support throughout the globe. For specific field service options available in your area please contact your local sales agent
or our U.S. factory at +1 858-292-2710, Option 4.
CAUTION: UNPACK WITH CARE
WHEN UNPACKING, DO NOT DISCARD THE PACKING CASE OR ANY PACKING MATERIAL, UNTIL THE
CONTENTS OF THE PACKING CASE ARE
INSPECTED AND CAREFULLY COMPARED WITH
THE SHIPPING DOCUMENTS.
IF ANYTHING IS UNSATISFACTORY, PLEASE
NOTIFY HARDY INSTRUMENTS IMMEDIATELY BY
CALLING, FAXING OR E-MAILING TO:
Customer Support Department
HARDYPROCESS SOLUTIONS
9440 Carroll Park Drive, Suite 150
San Diego, California 92121
Phone: (800) 821-5831
(858) 278-2900
FAX: (858) 278-6700
E-mail: hardysupport@hardysolutions.com
Web Address: www.hardysolutions.com
A RETURN AUTHORIZATION NUMBER IS REQUIRED
BEFORE RETURNING ANY DAMAGED PRODUCT.
CALL THE CUSTOMER SUPPORT DEPARTMENT TO
GET THE NUMBER. YOUR COMPANY NAME,
ADDRESS, TELEPHONE NUMBER, SERIAL NUMBER
OF THE UNIT AND A BRIEF DESCRIPTION OF THE
PROBLEM SHOULD BE READY WHEN CALLING.
IN CASE OF DAMAGE DUE TO SHIPPING, NOTIFY
THE DELIVERING CARRIER IMMEDIATELY FOR AN
INSPECTION.
Table of Contents
Table of Contents
General Information - - - - - - - - - - - - - - - - - - - - - - - - 1
Three Load Point Types - - - - - - - - - - - - - - - - - - - - - - 2
Unpacking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3
Installation of the Ground Strap - - - - - - - - - - - - - - - - - - - 3
Site Preparation - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Precautions - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Basic Engineering Principles for Positioning Load Point Assemblies - 5
Principle #1 - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Principle #2 - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Principle #3 - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Principle #4 - - - - - - - - - - - - - - - - - - - - - - - - - - 6
Typical Mounting Arrangements - - - - - - - - - - - - - - - - - - 6
Round Vessel with 3 Load Point Assemblies 7
Round Vessel with 3 Load Point Assemblies - Angle Config. #1 - 7
Round Vessel with 3 Load Point Assemblies - Angle Config. #2 - 8
Square Hopper with 3 Load Point Assemblies - Even
Load Distribution - - - - - - - - - - - - - - - - - - - - - - - 8
Square Hopper with 3 Load Point Assemblies - Uneven
Load Distribution - - - - - - - - - - - - - - - - - - - - - - - 9
Round Vessel with 4 Load Point Assemblies - - - - - - - - - - 9
Typical 4 - Load Point Assembly Installation - - - - - - - - - - 10
Typical 6 - Load Point Assembly Installation - - - - - - - - - - 11
Level Requirements - - - - - - - - - - - - - - - - - - - - - - - - 11
Stiffness - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
Installation Procedures - - - - - - - - - - - - - - - - - - - - - - - 12
Pre-Installation Procedures - - - - - - - - - - - - - - - - - - - 12
Installing Load Point Assemblies with Anchor Bolts - - - - - - - 13
Installing the Base Plate - - - - - - - - - - - - - - - - 13
Installing the Top Plate to the Load Surface - - - - - - 18
Adjusting the Anti-Lift Off Device - - - - - - - - - - - - - - - - - 21
Replacing the Load Sensor - - - - - - - - - - - - - - - - - - - - - 21
Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - 25
Physical Checks - - - - - - - - - - - - - - - - - - - - - - - - 25
Electrical Tests for Load Point Assembly Problems - - - - - - - 25
Zero Balance Test - - - - - - - - - - - - - - - - - - - 25
Bridge Resistance Test - - - - - - - - - - - - - - - - 26
Resistance to Ground Test - - - - - - - - - - - - - - - 26
Electrical Termination Cable Color Codes - - - - - - - - - - - - - - 27
Model Numbers - - - - - - - - - - - - - - - - - - - - - - - - - - 28
Three Leg Systems - - - - - - - - - - - - - - - - - - - - - - 28
Four Leg Systems - - - - - - - - - - - - - - - - - - - - - - - 29
Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
i
HI HLPS SERIES LOAD POINT ASSEMBLY
ii
OPERATION AND INSTALLATION MANUAL
Congratulations, on your purchase of the Hardy Process Solutions
Load Point Assembly. This product, is engineered to set a new standard in load point assemblies. Hardy combined new innovations with
previously extra cost features and just plain common sense features
and provided you with optimum performance unequaled anywhere.
General Information The Hardy HI HLPS Hermetic Load Point System
provides accurate output in the most demanding
applications. The load sensor performance exceeds
IP68 and NEMA 6 Standards for Wash Down Resis
tance.
Use the HI HLPS Free Sliding Load Point System for
medium capacity vessels. The pre-assembled Free
Sliding Load Point System consists of three low pro
file mount types (See Figs. 1,2,3) that are designed to
eliminate the effects of unwanted forces and resulting
in exceptional load measuring accuracy.
Each load point consists of a stainless steel load sensor which is hermetically sealed (gauge area and cable
entry), Enhanced C2
tion, matched mV/V and mV/V/Ohm and a 1/4 inch
conduit adapter. The load points are pre-assembled at
our factory, eliminating any assembly in th e field.
Each load point is fitted with a grounding strap and
anti-lift-off protection. The load points mounting
hardware is available in either stainless or galvanized
steel.
®
Second Generation Calibra-
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Page 1
HI HLPS SERIES LOAD POINT ASSEMBLY
Three Load Point Types
FIG. 1: FIXED PIN LOAD POINT
Page 2
FIG. 2: BUMPER PIN LOAD POINT
FIG. 3: FREE SLIDING PIN LOAD POINT
OPERATION AND INSTALLATION MANUAL
Unpacking • Do not remove the load point assembly from it’s
packaging until just before installation. Although
the load sensor is designed for harsh environ
ments, it is a precision instrument and should be
treated as such.
• Inspect the box, packing and the load point
assembly for any signs of damage that might
occur during shipment. Since almost all of the
load point assemblies are shipped F.O.B. our fac
tory, such damage is normally the responsibility
of the carrier and should be reported to them.
• LOAD SENSOR CERTIFICATION SHEETS
ARE AVAILABLE 24 HOURS A DA Y IN
THE SUPPORT SECTION OF OUR WEB
SITE: http://www.hardysolutions.com
• Write down the serial number(s) on the inside of
the back cover for reference when talking to
Hardy Customer Service. Store this information
in a secure dry location for future reference.
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Installation of the Ground Strap
Step 1. Cut the plastic strap that fastens the
ground strap to the Load Point Assembly.
Step 2. Use a box-end wrench to remove the two
shipping brackets from the load point. (See
Fig. 4)
FIG. 4: REMOVING SHIPPING BRACKETS
Step 3. Remove the shipping brackets, which are
intended only for use during shipment
from the factory. They offer no protection
Page 3
HI HLPS SERIES LOAD POINT ASSEMBLY
if you are shipping the vessel fully
assembled on the load points.
Step 4. Save the two shortest machine screws (the
hex bolts that fasten the shipping brackets
to the base plate). You will use them to
install the ground strap. (See Fig. 1-4)
Step 5. Place one of the ground strap connectors
over the threaded hole in the base plate.
These are the ones that fastened the ship
ping bracket to the base. (See Fig. 5)
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FIG. 5: GROUND STRAP INSTALLED
Step 6. Install a hex bolt. Tighten with a box-end
wrench.
Step 7. Place the other ground strap connector
over the threaded hole in the top plate.
Step 8. Install the other hex bolt. Tighten with a
box-end wrench.
Step 9. Fig. 5 shows the ground strap installed on
the left side when facing the front of the
load point assembly. However, you can
install the strap on either side if necessary.
NOTE: Do not connect the ground strap to the base plate on
the right side and to the top plate on the left side or
vice versa. Crossing over will interfere with the load
cell performance.
Page 4
OPERATION AND INSTALLATION MANUAL
Site Preparation • All mounting surfaces for the base and loading
plate must be level. The distance between the
mounting surface of the loading plate and base
must be within 1/32” of the nominal height, “H”.
The Load Point Assemblies in a system must be
level to within +/- 0.5
• When mounting the base plate on concrete, use
grout to level the plate.
• Do any welding before installing the load points.
• Provide proper drainage to prevent the load point
assembly from standing in water.
Precautions • Always treat the Load Sensor as a precision
instrument. Leave the load point assembly in its
packaging until it is time for installation.
• NEVER CARRY OR SWING THE LOAD SENSORS BY THEIR CABLES.
• Never allow moisture to get into any int erconnections.
• HARDY SOLUTIONS RECOMMENDS THAT
YOU DO NOT CUT YOUR ADVANTAGE
OR ADVANTAGE LITE® LOAD SEN
o
.
®
SOR CABLE. BECAUSE YOUR C2®
ACCURACY WILL BE AFFECTED AND
THE WARRANTY VOIDED.
Basic Engineering Principles for Positioning Load Point Assemblies
Principle #1 • Position the Load Points Assemblies so that the
load (weight) is distributed as evenly as possible
between each load point assembly in the scale.
• When the installation does not allow even distribution of the load, select higher capacity load
point assemblies.
NOTE: All load point assemblies must have the same capacity
when used in one scale.
Page 5
HI HLPS SERIES LOAD POINT ASSEMBLY
Principle #2 • All scales should include one fixed pin-load
mount (F), one bumper pin-load mount (B). All
other load point assemblies in a scale must be the
free-sliding mount (S).
Principle #3 • Place the fixed pin-load mount and the bumper
pin load mount as far as possible from each other .
• The fixed pin load mount and the bumper pin
load mount must be mounted in the same longitu
dinal axis.
• In applications that use three load points it is
sometimes difficult to mount the fixed-pin and
bumper load mounts in-line. Therefore the fixed
pin and bumper load mounts can be positioned at
o
a 45
angle from each other and 45o from the
free-pin load mount. See the mounting diagrams
below for more information.
Principle #4 • If possible, the fixed-pin load mount should be
installed so that the load mount is oriented in the
direction of travel (e.g. when under a conveyor,
the load mount must be in the same longitudinal
axis with the direction of the travel of the con
veyor). The load mount must be oriented in the
direction of any prevalent side force.
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Typical Mounting Arrangements
NOTE: You can orient the load point assemblies to meet your
system installation requirements. All load point
o
assemblies can be rotated 360
in 90o increments. The
examples above are recommendations only. The only
requir ed orientation is that the bumper load cell must
point either towards or directly away from the fixed
load point.
Use the load cell cable for the pointer to ensure that
the vessel cannot rotate and allow the cells to slide off
their mounts.
Page 6
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