Hardy LPB User Manual

HI LPB SERIES

LOAD POINT ASSEMBLIES

OPERATION AND INSTALLATION

MANUAL

Corporate Headquarters

9440 Carroll Park Dr., Ste 150
San Diego, CA 92121
Phone: [phone]
FAX: [phone]
Web-Site: http://www.hardysolutions.com

Hardy Process Solutions Document Number: 0596-0238-01 Rev F

Copyright 2011 Hardy Process Solutions, Inc. 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 applica­tions. 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
Ext. 1757 or Emergency Service after hours (Standard Hours 5:30 AM to 5:30 PM

Pacific Standard Time) and weekends

Ext. 1111.

Outside the U.S

Hardy 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 [phone], Ext. 1757.

1-2

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 PROCESS SOLUTIONS IMMEDI­ATELY BY CALLING, FAXING OR E-MAILING TO:

Customer Support Department
HARDY PROCESS SOLUTIONS, INC.
9440 Carroll Park Dr., Ste 150
San Diego, California 92121

Phone: [phone]

[phone]

FAX: [phone]

E-mail: [e-mail]
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 - - - - - - - - - - - - - - - - - - - - - - - - Page 1
Three Load Point Types - - - - - - - - - - - - - - - - - - - - - - Page 1
Unpacking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Page 3
Installation of the Ground Strap - - - - - - - - - - - - - - - - - - - Page 3
Site Preparation - - - - - - - - - - - - - - - - - - - - - - - - - - P a ge 5
Precautions - - - - - - - - - - - - - - - - - - - - - - - - - - - - Page 6
Basic Engineering Principles for
Positioning Load Point Assemblies - - - - - - - - - - - - - - - - - Page 6

Principle #1 - - - - - - - - - - - - - - - - - - - - - - - - - - P a ge 6
Principle #2 - - - - - - - - - - - - - - - - - - - - - - - - - - P a ge 6
Principle #3 - - - - - - - - - - - - - - - - - - - - - - - - - - P a ge 6
Principle #4 - - - - - - - - - - - - - - - - - - - - - - - - - - P a ge 7

Typical Mounting Arrangements - - - - - - - - - - - - - - - - - - Page 7

Round Vessel with 3 Load Point Assemblies - - - - - - - - - - Page 7
Round Vessel with 3 Load Point
Assemblies - Angle Config. #1 - - - - - - - - - - - - - - - - - Page 8
Round Vessel with 3 Load Point
Assemblies - Angle Config. #2 - - - - - - - - - - - - - - - - - Page 8
Square Hopper with 3 Load Point
Assemblies - Even Load Distribution - - - - - - - - - - - - - - Page 9
Square Hopper with 3 Load Point
Assemblies - Uneven Load Distribution - - - - - - - - - - - - - Page 9
Typical 4 - Load Point Assembly Installation - - - - - - - - - - Page 10

Typical 6 - Load Point Assembly Installation - - - - - - - - - - Page 10
Level Requirements - - - - - - - - - - - - - - - - - - - - - - - - Page 1 0
Stiffness - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Page 11
Installation Procedures - - - - - - - - - - - - - - - - - - - - - - - Page 11

Pre-Installation Procedures - - - - - - - - - - - - - - - - - - - Page 11

Installing Load Point Assemblies with

Anchor Bolts - - - - - - - - - - - - - - - - - - - - - - - - - Page 12

Installing the Base Plate - - - - - - - - - - - - - - - - - - - - Page 12

Installing the Top Plate to the Load Surface - - - - - - - - - - - Page 17
Adjusting the Anti-Lift Off Device - - - - - - - - - - - - - - - - - Page 20
Replacing the Load Sensor - - - - - - - - - - - - - - - - - - - - - Page 21
Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - Page 24

Physical Checks - - - - - - - - - - - - - - - - - - - - - - - - Page 24

Electrical Tests for Load Point

Assembly Problems - - - - - - - - - - - - - - - - - - - - - - Page 25

Zero Balance Test - - - - - - - - - - - - - - - - - - - Page 25
Bridge Resistance Test - - - - - - - - - - - - - - - - Page 25
Resistance to Ground Test - - - - - - - - - - - - - - - Page 26

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HI HLPB SERIES LOAD POINT ASSEMBLY

Electrical Termination Cable Color Codes - - - - - - - - - - - - - - Page 26
Model Numbers - - - - - - - - - - - - - - - - - - - - - - - - - - Page 27

Three Leg Systems - - - - - - - - - - - - - - - - - - - - - - - Page 28
Four Leg Systems - - - - - - - - - - - - - - - - - - - - - - - Page 28

Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - Page 28

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 LPB Hermetic Load Point System is

designed to provide accurate output in the most
demanding applications. The load sensor performance
exceeds IP68 and NEMA 6 Standards for Wash Down
Resistance.

The HI LPB Free Sliding Load Point System is
designed for use on medium capacity vessels. The pre
assembled Free Sliding Load Point System consists of
three (3) different low profile mount types (See Figs.
1,2,3) specifically 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 truly hermetically sealed (gauge area and

cable entry), Enhanced C2
bration, 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 the
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 Cali-

Page 1

HI LPB 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 environ­ments, 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 fac­tory, such damage is normally the responsibility
of the carrier and should be reported to them.

• LOAD SENSOR CERTIFICATION SHEETS
ARE AVAILABLE 24 HOURS A DAY AT
OUR WEBSITE: http://www.hardinst.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.

Installation of the
Ground Strap

Step 1. Cut the plastic strap that fastens the

ground strap to the Load Point Assembly.

Step 2. Remove the two shipping brackets from

the load point with a box-end wrench. (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

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HI LPB SERIES LOAD POINT ASSEMBLY

if you are shipping the vessel fully asssem­bled on the load points.

Step 4. Save the two shortest machine screws, the

ones that fasten the shipping brackets to
the base plate. Y ou will use these hex bolts
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 ship­ping bracket to the base. (See Fig. 5)

FIG. 5: GROUND STRAP INSTALLED

Step 6. Install the 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. In the illustration we show 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