NORD-LOCK Boltight Echometer Premier User Manual

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Echometer

Premier

USER MANUAL

Introduction

Transducer Application Instructions

Boltight Limited

Tel: +44 (0) 1922 669222

Email: enquiries.boltight.uk@nord-lock.com

www.nord-lock.com/Boltight

Operating Instructions

Units and Geometric Properties

Bolt Specifications and Standards

Estimating a Load Factor

Table of Contents

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Page 1 Echometer Premier USER MANUAL Introduction Operating Instructions Bolt Specifications and Standards Transducer Application Instructions Units and Geometric Properties Estimating a Load Factor Boltight Limited Tel: +44 (0) 1922 669222 Email: enquiries.boltight.uk@nord-lock.com www.nord-lock.com/Boltight...
Page 2 Boltight Limited cannot accept any responsibility for any actions arising as a result of misuse of this equipment. The contents of this manual may periodically be subject to alteration. Boltight Limited reserves the right to alter or modify this manual without prior notification. Further copies of this manual can be downloaded from the website www.nord-lock.com/Boltight...
Page 3: Table Of Contents
CONTENTS SECTION 1 – INTRODUCTION 1.1 Echometer premier SECTION 2 – OPERATION INSTRUCTIONS 2.1 Overview 2.2 Specification & features 2.3 Transducer selection 2.4 Project/bolt data files 2.5 Settings 2.6 Options 2.7 Calculation setup 2.8 Measurement 2.9 Measuring bolts 2.10 Measuring new bolts 2.11 Exporting data in Excel format to a PC 2.12 Exporting project data to PC for back-up &...
Page 4: Section 1 - Introduction
SECTION 1 – INTRODUCTION Load in a bolt can be determined ultrasonically by measuring the change in the time-of-flight (TOF) of an ultrasonic wave through a bolt as the bolt is loaded (tightened). This technology was developed in the early 1970’s to keep cryogenic joints together in rocket engines and is still used for that purpose by most of the world’s engine and satellite builders.
Page 5: Section 2 - Operation Instructions
SECTION 2 – OPERATION INSTRUCTIONS 2.1 OVERVIEW Screen functionality LED INDICATOR PROCESSOR WORKING POWER ON TOUCH SCREEN TRANSDUCER PORT PITCH/CATCH PORT: P/C PULSE-ECHO: P/E (SINGLE PIN LEMO) TEMPERATURE PROBE I/O PORT (6 PIN LEMO) PORT (3 PIN LEMO) MINI-USB PORT EXTERNAL CHARGER PORT BOLTIGHT –...
Page 6: Specification & Features
2.2 SPECIFICATION & FEATURES Intuitive operation — No buttons, fewer steps, programmable touch pad QWERTY alpha-numeric input. — Creation, storage, retrieval of individual projects (group of fasteners). — Bolt types for projects (geometry, material, etc.) stored individually for repeated use/retrieval. —...
Page 7 Temperature Transducer — Class A PT100. Microprocessor — 32-bit ARM ® — Single shot. — Time resolution to 0.1ns or better. — 100dB receiver. — Programmable pulser: amplitude, frequency, cycles. Fast A-D and/or dig out control — Windowing (hi res) analog output, scaled to SETUP parameters, 0-10V. —...
Page 8: Transducer Selection
2.3 TRANSDUCER SELECTION A wide variety of ultrasonic transducers are available. Suitability for a specific application is determined based on the transducer’s center frequency, diameter, and damping. However, because there is often a broad range of applications for which transducers are suitable, and these ranges often overlap, it can be difficult to pick the “best”...
Page 9 2.3.3 TRANSDUCER DIAMETER A transducer’s rated diameter actually refers to the diameter of its crystal. A transducer’s diameter affects the efficiently with which it transmits sound as well as the beam width of the transmitted ultrasound. Remember, beam width identifies how dispersed the shock wave becomes as it travels over a specific distance.
Page 10: Project/Bolt Data Files
2.4 PROJECT/BOLT DATA FILES A joint is a structure that contains a collection of bolts whose purpose is to hold the structure together through the combined clamping force of the bolts in the joint. These bolts can all be the same size or may be of different diameters and lengths (types).
Page 11: Settings
2.5 SETTINGS When switching on your unit – the first screen which comes up gives you the option to press SETUP in order to configure the unit. Setup file management — File Backup – You can backup your files. You can select what projects you need to backup to drive B —...
Page 12: Calculation Setup
2.7 CALCULATION SETUP — Enter the Material Modulus if it is different from the selected material in Bolt screen. Enter the Yield value of the material. — E.g.: 8.8 = 640 MPa ; 10.9 = 900 MPa B7 = 724 Mpa —...
Page 13: Measurement
2.8 MEASUREMENT The unit will automatically continue the previously run project. If there are no projects the screen will show “No projects” before going to the Project List screen. Measure Screen SELECTED PROJECT/ VIEW OR CHANGE SELECT NEW PROJECT PROJECT INFO SELECTED BOLT/ VIEW OR CHANGE SELECT NEW BOLT...
Page 14 New project screen — Enter your Project Name and confirm by pressing ENTER. — It will ask if you really want to create a new project. If you do, press YES. If you do not, press NO and you can start again. —...
Page 15 — Choose bolt type or enter a new type by pressing the empty Bolt Type: button, and then NEW. — Screen shows bolt number. — If you assign or create a new bolt type: Name the new type and press ENTER to continue. You will then be asked if you want to create a new bolt type.
Page 16 — To display load, the calculated or calibrated stiffness of the bolt is entered here. Stress and temperature factor and details are default values from material choice. — Elon 0% & Elon 100%: The unit will output a 0-10V DC analog signal from the I/O port.
Page 17: Measuring Bolts
2.9 MEASURING BOLTS — To display load, the calculated or calibrated stiffness of the bolt is entered here. Stress and temperature factor and details are default values from material choice. — If no temperature probe is attached, a message showing “Temperature Sensor Failed” will show. Push the temperature button and manually enter the temperature.
Page 18 + - Window/signal expansion – compression > < Move trace L or R so select different echo packet. AGC Automatic Gain Adjustment. If this button flashes red, press it. PK New signal acquisition <Z – Z> Zero crossing selector, chose different timing zero crossing. STORE will save the scope trace for later viewing –...
Page 19: Measuring New Bolts
2.10 MEASURING NEW BOLTS When the ACCEPT button is pushed from Bolt Reading or Scope screen, the program returns to the Bolt Info screen. — From here the entered data in each field can be inspected by pressing the at the end of each entry.
Page 20: Exporting Data In Excel Format To A Pc
2.11 EXPORTING DATA IN EXCEL FORMAT TO A PC IMPORTANT NOTICE — The USB-PC port is ONLY active when in File Manager and the USB icon is activated. — Once the USB-cable is plugged in, and activated, you cannot enter or change data on from the program. —...
Page 21: Exporting Project Data To Pc For Back-Up & Transfer
The $DATAFILES folder contains the CSV files for each project and all the Bolt types ‘printed’ (CSV): The folder called $DATAFILES contains your generated CSV files information. The Project folder: TST contains the CSV scope files. If multiple projects have been written, you will see them all here. In $DATAFILES copy the $DATAFILES folder to your local hard drive.
Page 22: Section 3 - Bolt Specification & Standards
SECTION 3 – BOLT SPECIFICATION & STANDARDS ISO SPECIFICATION R898 Temperature factor Sound velocity Modulus of elasticity Bolt Sonic stress F° C° In/sec Mm/sec Psi x 10 6 Mpa x 10 3 material factor 0.276 232000 5892800 29.9 Gr. 8.8 0.276 232000 5892800...
Page 23: Section 4 - Transducer Application Instructions
SECTION 4 – TRANSDUCER APPLICATION INSTRUCTIONS Magnetic Transducers — Bolt end finish for the transducer should be minimum of Ra 0.8 micro-meters. — Clean the end of the bolt with Loctite cleaner or equivalent. — Apply small drop of couplant onto the top of the bolt.
Page 24 Glue on Transducers — Bolt end finish for the transducer should be minimum of Ra 0.8 micro-meters. — Clean the end of the bolt with Loctite cleaner or equivalent. — Place a small amount of glue in the centre at end of the bolt using brush/cocktail sticks or similar device.
Page 25: Section 5 - Units Of Measure & Geometric Properties
SECTION 5 – UNITS OF MEASURE & GEOMETRIC PROPERTIES Measurement Modes Pulse/Echo - Pitch/Catch Transducer Frequency Megahertz (MHz) Tone burst length Pulses Analog Output IVolts Measured Item Metric 1 Metric 2 Imperial Length Kilonewtons/mm Kilograms/mm Pounds/Inches Elongation Millimetres Millimetres Inches Diameter Millimetres Millimetres...
Page 26: Section 6 - Estimating A Load Factor
SECTION 6 – ESTIMATING A LOAD FACTOR The following section describes the method to estimate or calculate the theoretical Load Factor for a specific fastener configuration. However, where independent measurement of known loads cannot be made, a close estimate of the load factor can be achieved using the following procedure.
Page 27 E= Modulus of Elasticity of the Bolt Material The value of the Modulus of Elasticity (Young’s Modulus), of the bolt material should be provided by the manufacturer of the bolts being tested. A tabulation of E for common bolt materials is presented in Section 4.
Page 28 Boltight Limited Tel: +44 (0) 1922 669222 Email: enquiries.boltight.uk@nord-lock.com www.nord-lock.com/Boltight...