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MAX
Operating Manual
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Dakota Ultrasonics MAX Operating Manual

OPERATION MANUAL
DAKOTA ULTRASONICS
MAX II
Ultrasonic Bolt Tension Monitor
TABLE OF CONTENTS
CHAPTER ONE INTRODUCTION ...................................................................... 1
1.1
GENERAL DISCLAIMER .......................................................................................................... 1
1.2
SAFTEY ................................................................................................................................ 1
1.3
WARRANTY .......................................................................................................................... 2
CHAPTER TWO ABOUT THIS MANUAL .......................................................... 3
2.1
NEW TO ULTRASONICS? ....................................................................................................... 3
2.2
NEW TO FASTENER MEASUREMENT? ..................................................................................... 3
2.3
MAX II OVERVIEW ................................................................................................................ 3
2.4
TOP & SUBMENU REFERENCE .............................................................................................. 6
CHAPTER THREE QUICK START GUIDE ........................................................ 8
3.1
OVERVIEW ........................................................................................................................... 8
GETTING THE MAX II READY ................................................................................................. 8
3.2
3.3
SETTING UP THE MAX II ....................................................................................................... 8
3.4
CREATING A NEW GROUP TO STORE MEASUREMENTS ........................................................ 12
3.5
SETTING THE APPROXIMATE LENGTH .................................................................................. 19
3.6
MEASURING REFERENCE LENGTHS ..................................................................................... 22
MEASURING ELONGATIONS ................................................................................................. 23
3.7
CHAPTER FOUR KEYBOARD, MENU, & CONNECTOR REFERENCE ........ 25
4.1
MENU KEY (OPERATION & SUB MENUS) .............................................................................. 25
4.2
CAL – MENU ...................................................................................................................... 27
4.3
MATL (MATERIAL) – MENU ................................................................................................. 27
4.4
GEOM (GEOMETRY) – MENU .............................................................................................. 28
DISP (DISPLAY) – MENU ..................................................................................................... 29
4.5
4.6
TUNE – MENU ................................................................................................................... 30
4.7
GATES – MENU ................................................................................................................ 30
4.8
AUTO – MENU ................................................................................................................... 31
4.9
SETUP – MENU ................................................................................................................. 32
DATA – MENU ................................................................................................................. 32
4.10
4.11
UTIL (UTILITIES) – MENU .................................................................................................. 33
4.12
XFER (TRANSFER) – MENU .............................................................................................. 34
4.13
ON/OFF KEY ................................................................................................................... 34
4.14
FREEZE KEY .................................................................................................................. 34
SETUPS KEY .................................................................................................................. 35
4.15
4.16
AUTO SET KEY ............................................................................................................... 35
4.17 DATA KEY ...................................................................................................................... 35
4.18
STORE KEY .................................................................................................................... 35
4.19
CLEAR KEY .................................................................................................................... 35
MEAS (MEASUREMENT MODE) KEY .................................................................................. 35
4.20
4.21
OK KEY ........................................................................................................................... 36
4.22
ESC KEY ......................................................................................................................... 36
4.23
WHEEL KEYS……………………………. .......................................................................... 36
4.24
ENTER KEY .................................................................................................................... 36
4.25
NAVIGATING THE HOT MENUS .......................................................................................... 36
TOP & BOTTOM END CAPS ............................................................................................... 38
4.26 T
RANSDUCER CONNECTOR ...................................................................................................... 38
B
ATTERY COVERS (BACKUP) .................................................................................................... 38
USB
TYPE B CONNECTOR ....................................................................................................... 38
RS-232
LARMS CONNECTION (LEMO 1 – 5 PIN) .................................................................................. 39
A A
NALOG OUTPUT (LEMO 1 – 5 PIN) ......................................................................................... 39
P
OWER CONNECTOR (LEMO 1 – 2 PIN) .................................................................................... 39
SERIAL CONNECTION (LEMO 1 – 5 PIN) ...................................................................... 38
CHAPTER FIVE THEORY OF OPERATION ................................................... 40
5.1
ULTRASONIC MEASUREMENT OF BOLTS .............................................................................. 40
FEATURES OF THE MAX II .................................................................................................. 40
5.2
5.3
ULTRASONIC WAVES .......................................................................................................... 41
5.4
MEASUREMENT MODES ...................................................................................................... 41
CHAPTER SIX BOLT PREPARATION ............................................................ 43
6.1
USE OF ULTRASONIC COUPLANT ........................................................................................ 43
6.2
TRANSDUCER CONTACT REQUIREMENTS ............................................................................ 43
BOLT END REFLECTORS ..................................................................................................... 45
6.3
CHAPTER SEVEN TRANSDUCER SELECTION ............................................ 47
7.1
SELECTING THE TRANSDUCER ............................................................................................ 47
CHAPTER EIGHT MEASURING SYSTEM ZERO (CALIBRATION) ............... 48
8.1
INTRODUCTION .................................................................................................................. 48
CALIBRATION / ZERO MISNOMER ......................................................................................... 48
8.2
8.3
CREATING A GROUP TO DOCUMENT ZERO (CALIBRATION) DATA .......................................... 49
8.4
AUTO ZERO/CALIBRATION .................................................................................................. 57
8.5
USING A STANDARD BOLT .................................................................................................. 62
8.6
CALIBRATION / ZERO BARS & TRIPLE SIDED GLASS BLOCK ................................................. 77
CHAPTER NINE TEMPERATURE COMPENSATION .................................... 93
9.1
PURPOSE .......................................................................................................................... 93
9.2 MANUAL MODE .................................................................................................................. 93
9.3
SEMI AUTOMATIC MODE ..................................................................................................... 95
9.4
AUTOMATIC MODE .............................................................................................................. 96
CHAPTER TEN BOLT MATERIAL CALIBRATION ......................................... 98
WHY CALIBRATE? ............................................................................................................ 98
10.1
10.2
VELOCITY CALIBRATION .................................................................................................... 98
10.3
STRESS FACTOR CALIBRATION ........................................................................................ 102
10.4
TEMPERATURE FACTOR CALIBRATION ............................................................................. 106
CHAPTER ELEVEN LOAD MEASURMENT .................................................. 109
11.1
CALCULATING LOAD FACTOR .......................................................................................... 109
11.2
CALIBRATING LOAD FACTOR (FIELD CALIBRATION) .......................................................... 111
11.3
PERFORMING A FIELD CALIBRATION ................................................................................ 112
CHAPTER TWELVE MEASUREMENT & WAVEFORM DISPLAY ............... 127
12.1
QUANTITIES OF MEASUREMENT ...................................................................................... 127
DISPLAY VIEW OPTIONS ................................................................................................. 128
12.2
12.3
ADJUSTING THE DISPLAY ................................................................................................ 134
12.4
GAIN .............................................................................................................................. 139
12.5
GATES ........................................................................................................................... 143
12.6
THRESHOLDS ................................................................................................................. 146
INTERPRETING THE WAVEFORM ...................................................................................... 149
12.7
12.8
MANUALLY LOCATING THE ECHO .................................................................................... 151
12.9
AUTOMATIC ECHO OPTIMIZATION .................................................................................... 153
12.10
UNLOADED LENGTH AND ELONGATION MEASUREMENTS ................................................ 156
CHAPTER THIRTEEN ADDITIONAL FEATURES ........................................ 157
13.1
QUALITY/CORRELATION (TRANSDUCER PLACEMENT) ...................................................... 157
BRIGHTNESS .................................................................................................................. 157
13.2
13.3
COLOR ........................................................................................................................... 158
13.4
DIM ................................................................................................................................ 160
13.5
GRAPHICS OPTIONS (LOOK & FEEL) ................................................................................ 161
13.6
PULSE ........................................................................................................................... 162
PULSER VOLTAGE .......................................................................................................... 163
13.7
13.8
DAMPING ....................................................................................................................... 165
13.9
DIGITIZER ...................................................................................................................... 165
13.10
POLARITY .................................................................................................................... 167
13.11
ALARM MODE ............................................................................................................... 168
13.12
ANALOG OUTPUT ......................................................................................................... 170
KEY CLICK ................................................................................................................... 171
13.13
13.14
DATE & TIME ................................................................................................................ 172
13.15 UPGRADE GAUGE ........................................................................................................ 173
13.16
FREEZE & CAPTURE ..................................................................................................... 174
13.17
STORAGE .................................................................................................................... 175
CHAPTER FOURTEEN DATA STORAGE – SETUP, EDIT, & VIEW FILES 177
INTRODUCTION TO GROUP (SPREADSHEET) FORMAT ....................................................... 177
14.1
14.2
CREATING A NEW GROUP ............................................................................................... 177
14.3
STORING A READING ...................................................................................................... 180
14.4
VIEWING STORED READINGS ........................................................................................... 181
14.5
DELETING GROUPS (FILES) ............................................................................................ 183
EDITING A GROUP (FILE) ................................................................................................ 186
14.6
14.7
CHANGING THE ACTIVE FILE - OPEN ................................................................................ 188
14.8
CLOSING AN ACTIVE FILE - CLOSE .................................................................................. 190
CHAPTER FIFTEEN SETUPS – CREATE, STORE, EDIT, & RECALL ........ 191
15.1
INTRODUCTION TO SETUPS............................................................................................. 191
OPENING A SETUP ......................................................................................................... 191
15.2
15.3
SAVING A SETUP ............................................................................................................ 192
15.4
DELETING A SAVED SETUP ............................................................................................. 195
15.5
USING THE DEFAULT SETUP ........................................................................................... 197
15.6
SELECTING A LANGUAGE ................................................................................................ 198
CHAPTER SIXTEEN SOFTWARE, FILE TRANSFER, & UPGRADES ........ 200
COMPUTER SYSTEM REQUIREMENTS .............................................................................. 200
16.1
16.2
INSTALLING DAKVIEW ..................................................................................................... 200
16.3
COMMUNICATING WITH MAX II ....................................................................................... 200
16.4
USING THE XFER MENU (MAX II) ................................................................................... 201
16.5
SELECTING STORAGE DEVICE ........................................................................................ 201
COPYING FILES (SETUPS, DATA, & SCREENSHOTS) ........................................................ 202
16.6
16.7
UPGRADING THE MAX II ................................................................................................. 204
CHAPTER ONE INTRODUCTION
The Dakota Ultrasonics model MAX II is used to measure the stretch (elongation, load, stress and %strain) of a fastener under tension. This is accomplished ultrasonically by sending an ultrasonic wave down the length of the fastener and accurately measuring the change in transit time between an unloaded versus loaded fastener/bolt, and calculating a physical stretch. The objective for using ultrasonics, over conventional/mechanical methods is accuracy. Most conventional methods refer to a torque value which has limited accuracy due to the coefficient of friction. The coefficient of friction is difficult to determine, as it depends on the control and application of lubrication.
The MAX II avoids the coefficient of friction entirely, using the transit time of a wave, Hooke’s law, and Young’s modulus to accurately calculate the stretch on a bolt. Since the MAX II cannot physically stretch a bolt, both conventional/mechanical methods and the MAX II are complimentary and used in conjunction.
Dakota Ultrasonics maintains a customer support resource in order to assist users with questions or difficulties not covered in this manual. Customer support may be reached at any of the following:
Dakota Ultrasonics Corporation 1500 Green Hills Road, #107 Scotts Valley, CA 95066 USA Telephone: (831) 431-9722 Facsimile: (831) 431-9723 www.dakotaultrasonics.com
1.1 General Disclaimer
The manual should be read and understood prior to using the MAX II. This operating manual provides the user with all the general information necessary to use and adjust the designed features. However, this manual is not a certified NDT/Bolting training course, nor is it intended to be one. Training, according to company requirements, is recommended. The responsibility for proper use of the instrument rests solely on the user.
1.2 Safety
Using the MAX II while standing in water or in a wet environment can result in serious electric shock, injury, and even death.
Operating the MAX II with damaged or inadequate cables and power source can result in serious electric shock, injury, and even death.
Failure to read this manual and understand the proper operation of the MAX II can result in inaccurate measurements, and lead to decisions which cause property damage, personal injury, or even death.
Use of the MAX II for any other purpose, or in any other manner than described in this manual invalidates the warranty and can result in serious electric shock, injury, and even death.
1.3 Warranty
The Dakota Ultrasonics MAX II carries a two year limited warranty. The warranty only applies to MAX II units being operated as described in this manual. Software and hardware failures of the unit will be repaired or replaced at Dakota Ultrasonics discretion. Dakota Ultrasonics will not be held liable for any damage caused, interruption of business, loss of profits, etc., resulting from such failures. Dakota Ultrasonics will not be liable to repair or replace a unit, which has been damaged, used inappropriately, or subject to unauthorized repair by the purchaser.
CHAPTER TWO ABOUT THIS MANUAL
This chapter is intended to help you make the best use of this manual. Readers may have different knowledge of ultrasonic bolt measurement and may find parts of this manual repetitive or unnecessary.
2.1 New To Ultrasonics?
There are a variety of ultrasonic applications currently being utilized in today’s industry. For example weld inspection, thickness measuring, immersion testing of flaws, etc. The use of ultrasound to measure forces in fasteners is relatively new compared to the previously mentioned traditional applications.
Ultrasonic measurement of bolts provides an extremely accurate means of determining fastener load, provided the correct techniques are utilized. As a new user, careful consideration of this entire manual is highly recommended.
2.2 New to fastener measurement?
Assuming you are familiar with ultrasonics, but unfamiliar with fastener measurement, the chapters on transducer selection and the theory of operation can be skipped entirely.
The MAX II measures load on the fastener by measuring the amount the fastener stretches. As load is applied to the fastener, it stretch’s just as a spring would stretch. The stretch is proportional to the load while the load is less than the elastic limit of bolt. By measuring the stretch of the fastener and knowing the physical properties of the fastener, the load of the fastener can be calculated. The MAX II measures the fastener stretch by ultrasonically measuring the change in length.
Be sure to setup and experiment with a test fixture of some kind as a means of becoming familiar with your MAX II.
2.3 MAX II Overview
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In order to understand how to operate the MAX II, it’s best to start off with an understanding of what it is we’re looking at exactly. The MAX II has a lot of great features, tools, and flexibility to assist you with all of your bolting applications. Let’s have a brief look at the screens you’ll be looking at most often:
A. Repeatability/Stability Indicator – Indicates the reliability of the measured
bolt length. When all the vertical bars are fully illuminated and the last digit on the digital thickness value is stable, the MAX II is reliably measuring the same
value on a consistent basis. B. Battery Icon – Indicates the amount of battery life the MAX II has remaining. C. Temperature – Indicates the current temperature of either the temperature
sensor, or manual value entered.
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MAX II Bolt Tension Monitor
D. Alarm – Indicates that the alarm feature has been activated and currently in
use.
E. RF A-Scan Display (split screen) – Displays the radio frequency sound wave
reflection returned the opposite end of the bolt being measured. The RF view displays both the positive and negative cycles.
F. Quantity – Displays the current quantity setting used (elongation, load, stress,
strain or time).
G. Digital Measurement – Display in inches, millimeters, KSI, KIPS, %strain,
time (nanoseconds).
H. Rectified A-Scan Display – Displays either the positive or negative half cycle
wave reflection returned from the opposite end of the bolt being measured, depending on the polarity selected.
I. Time & Date – Feature to display either the time, date, or both time and date
on the main measurement screen.
J. Hot Menu items – We call this menu section our “hot menu”, as these items
are the most commonly adjusted features, requiring quick access from the user. They can be displayed and scrolled by pressing the MEAS key at any time. The MEAS key advances forward and the ESC key backwards to the
next hot menu item. Alternatively, the UP,DOWN, LEFT and RIGHT arrow keys on the left button wheel can be used to either scroll through the sub menu items, or advance to the next HOT MENU items list. There are 4 HOT MENU lists that contain the most commonly adjusted items from the tabbed menus, and in the same order as the tabbed menus. Note: Some of the lists contain multiple tabbed menu items in order to condense the number
of HOT MENU lists. K. Units – Displays the current measurement units being used (English, Metric). L. Gain & Step Size – The gain and increment step size can be continuously
used and adjusted at any time using the UP and DOWN arrow keys on
the right button wheel to scroll the value, and the GAIN key to activate the
Digit Edit screen to adjust the step size. M. Scan Bar – Another view of bolt length in a deflection style horizontal bar.
This is a visual tool that would enable the user the ability to see the length
from a graphics perspective. N. Large Digital Measurement – Display in inches, millimeters, KSI, KIPS,
%strain, time (nanoseconds). O. Feature Status Bar – Indicates the features currently enabled and in use in
the following order:
Measurement Mode Alarm Capture (screen shots) Quantity Temperature
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Velocity (material)
P. Temperature – Depending on the display view selected full/split screen, the
temperature will be displayed in either of two different locations on the screen.
Q. Digital Measurement – In full screen view, the measurement will be displayed
in either of two different locations (full/split screen).
R. RF A-Scan Display (full screen) – Displays the radio frequency sound wave
reflection returned the opposite end of the bolt being measured. The RF view displays both the positive and negative cycles.
2.4 Top & Submenu Reference
The following table is a quick menu reference guide. The MAX II has 11 top level menu titles, and multiple submenu items as illustrated below. The MAX II also has 4 ‘hot menu’ subsets of the same menu structure. These are the most commonly adjusted submenu items from each of the top level menus. They can be quickly
accessed from the main measurement screen by pressing the LEFT and RIGHT arrow keys multiple times using the left button wheel, and pressing the UP and
DOWN arrow keys on the left button wheel to select the appropriate submenu item. Refer to Chapter Four for additional definitions and information on the keypad and menu items.
1st Main Hot Menu Additional Hot Menus Note: “Log” is also listed in the 1st main Hot Menu, and is used to access data storage if no log file is
currently open, or display log or grid file if open.
Start >>
CAL MATL GEOM DISP TUNE GATES AUTO SETUP
ZERO MODE UNITS QUANTITY VIEW GAIN POLARITY AUTO SET OPEN
ZERO TYPE LOAD FACTOR BRIGHTNESS PULSE GATE 1 APPROX LEN SAVE
MEASURE
ZERO
LOAD CAL
MODE
LOAD CAL
CALC
WIDTH GATE 3 LANGUAGE
RECT WAVE THRESHOLD 3
DETECT MARK
VELOCITY LOAD OFFSET COLORS PULSER
VOLTAGE
STRESS
FACTOR
TEMP COEF EFFECTIVE
AREA DIM DAMPING GATE 2 DEFAULT
DELAY DIGITIZER THRESHOLD 2
LEN
THRESHOLD 1 MEASURE
MODE
DELETE
SETUP
6
>> End
DATA UTILS XFER
NEW TEMP MODE BACKUP
SETUPS
EDIT ALARM COPY DATA
OPEN ALARM LOW COPY
SCREENS
CLOSE ALARM HIGH UPGRADE
GAUGE
MAX II Bolt Tension Monitor
DELETE ONE
FILE
DELETE ALL
DATA
SET DATE ABOUT
SUMMARY SHOW DATE
ANALOG OUTPUT
KEY CLICK STORAGE
CAPTURE TO
FILE
7
CHAPTER THREE QUICK START GUIDE
3.1 Overview
This section demonstrates the basic procedures for setting up and measuring bolts using the MAX II. More in depth explanations pertaining to the individual functions and features can be found in the chapters that follow.
Here we go!
3.2 Getting the MAX II ready
Making all the connections
In order to get the MAX II ready for operation; the following connections must be made:
1) Remove the MAX II from the carrying case.
2) Connect the transducer cable to the transducer, and plug the lemo connector into the gauge.
3) If a temperature sensor is being used, connect the sensor to the MA X II.
3.3 Setting up the MAX II
Please Read: In this section the MAX II will be setup in its simplest form. Remember
this is only a quick start guide to get the user up and measuring bolts. Before we setup the gauge to measure basic elongation, the following assumptions must be made: A preset material type will be used. The user will not be re-measuring the fasteners at a later date to monitor relaxation of the joint over time. This eliminates the need for an instrument zero/calibration. All these assumptions will be answered and explained in detail in the chapters that follow.
Selecting the Quick Start Setup
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MAX II Bolt Tension Monitor
1) Press the ON/OFF key to power up the MAX II.
2) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right and the ESC key multiple times to tab left until the SETUP menu is highlighted and displaying the submenu items. Alternatively, press the LEFT and RIGHT arrow keys multiple times using the left button wheel.
3) Use the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the sub menu items until OPEN is highlighted.
4) Press the ENTER key to display the list of setups.
5) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the setup list until the QUICK START setup is highlighted.
6) Press the ENTER key to display the confirmation screen.
7) Press the OK key to select the setup and return to the menu screen, or ESC to cancel the selecting the setup.
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Selecting the Units
Note: The Quick Start setup, selected in the previous section, automatically
defaults to english units – inches. Follow the procedure below to change the units to metric, if needed.
1) Press the MENU key multiple times to tab right and the ESC key multiple times to tab left until the MATL menu is highlighted and displaying the submenu items. Alternatively, press the MENU key once, followed by pressing the LEFT and RIGHT arrow keys multiple times using the left button wheel to scroll the tabbed menus.
2) Use the UP and DOWN arrow keys to scroll through the sub menu items until UNITS is highlighted.
3) Press the LEFT and RIGHT arrow keys multiple times using the right button wheel to scroll through the unit options IN (inches), IN HR (inches hi resolution), MM (millimeters), and MM HR (millimeters hi resolution).
Note: The high-resolution options display an additional digit of resolution to the measurement. This mode is typically used when measuring very short bolts with very little elongation.
Selecting the Material Type
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MAX II Bolt Tension Monitor
This section allows the user the ability to select a material from a list of preset material types. Keep in mind that we are measuring elongation only. If your material is not in the list, select a similar material type. When measuring in elongation mode, the measurement consists of a difference equation only (Loaded Length – Unloaded Length = Length). Therefore, it doesn’t matter if the ultrasonic length is different from the actual physical length, because the Length will be the same. Example: 2.0080” physical loaded length – 2.0000” physical unloaded length = 0.0080” Length which is equivalent to 2.1080” ultrasonic loaded length – 2.1000” ultrasonic unloaded length = 0.0080” Length.
1) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the sub menu items until TYPE is highlighted.
2) Press the ENTER key to display the list material types.
3) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the material list until the appropriate type is highlighted.
4) Press the ENTER key to display the confirmation screen.
5) Press the OK key to select the type and return to the menu screen, or ESC to cancel selecting the material type.
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3.4 Creating a New Group to Store Measurements
Now that the MAX II is all setup, this section will explain how to get started measuring unloaded initial lengths. In order to do this, we need to create a group that contains bolts. A group can have up to 250 bolts, each bolt containing 1 reference length (L­REF), and up to 51 elongations. Keep in mind that the MAX II uses a group to store measurements and all gauge settings at the time of measurement.
Creating a Group Name
1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right, and the ESC key multiple times to tab left, until the DATA menu is highlighted and displaying the submenu items. Alternatively, press the MENU key once, followed by pressing the LEFT and RIGHT arrow keys multiple times using the left button wheel to scroll the tabbed menus.
Note: Pressing the key will automatically open the DATA tabbed menu.
2) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the sub menu items until NEW is highlighted.
3) Press the ENTER key to display the New Group Edit Box.
4) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the new Group List Items until NAME is highlighted.
5) Press the ENTER key to activate the Alpha Edit Box.
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MAX II Bolt Tension Monitor
6) Press the UP, DOWN, LEFT, & RIGHT arrow keys using the left button wheel to highlight the appropriate alpha characters.
7) Press the ENTER key to select a character and advance to the next field of the Group Name.
8) Use the CLR key to backspace if necessary.
9) Repeat steps 6 - 8 until the Group Name is completed.
10) Press the OK key to save the Group Name and return to the Group List
Items menu, or ESC to cancel entering the Group Name.
Creating a Group Note
1) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the new Group List Items until NOTE is highlighted.
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Dakota Ultrasonics
2) Press the ENTER key to activate the Alpha Edit Box.
3) Press the UP, DOWN, LEFT, & RIGHT arrow keys using the left button wheel to highlight the appropriate alpha characters.
4) Press the ENTER key to select a character and advance to the next field of the Group Note.
5) Use the CLR key to backspace if necessary.
6) Repeat steps 3 - 5 until the Group Note is completed.
7) Press the OK key to save the Group Note and return to the Group List
Items menu, or ESC to cancel entering the Group Note.
Selecting the Number of Bolts in the Group
Note: A group can contain up to 250 bolts. There must be at least 1 bolt in a
group.
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MAX II Bolt Tension Monitor
1) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the new Group List Items until NUM BOLTS is highlighted.
2) Press the ENTER key to display the Digits Edit Box.
3) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll the highlighted value.
4) Press the LEFT and RIGHT arrow keys multiple times using the left button wheel to scroll the digit locations.
5) Repeat steps 3 & 4 until the NUM BOLTS value is correctly displayed.
6) Press the OK key to save the NUM BOLTS and return to the Group List
Items menu, or ESC to cancel entering the NUM BOLTS.
Note: If a number greater than 250 is entered, an error message box “VALUE
IS OUT OF RANGE” will be displayed.
7) Press the OK key to display the Digits Edit Box and re-enter the NUM BOLTS.
8) Press the OK key to save the NUM BOLTS and return to the Group List
Items menu, or ESC to cancel entering the NUM BOLTS.
Selecting the Number of Readings Per Bolt
Note: A bolt can have up to 51 possible measurements and 1 initial length (L-
REF). There must be at least one reading per bolt.
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1) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the new Group List Items until NUM READS is highlighted.
2) Press the ENTER key to display the Digits Edit Box.
3) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll the highlighted value.
4) Press the LEFT and RIGHT arrow keys multiple times using the left button wheel to scroll the digit locations.
5) Repeat steps 3 & 4 until the NUM READS value is correctly displayed.
6) Press the OK key to save the NUM READS and return to the Group List
Items menu, or ESC to cancel entering the NUM READS.
Note: If a number less than 1 or greater than 51 is entered, an error message
box “VALUE IS OUT OF RANGE” will be displayed.
7) Press the OK key to display the Digits Edit Box and re-enter the NUM READS.
8) Press the OK key to save the NUM READS and return to the Group List Items menu, or ESC to cancel entering the NUM READS.
If there’s not enough memory available to create the group, an error message box “NOT ENOUGH MEMORY” will be displayed. Press the OK or ESC key to
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MAX II Bolt Tension Monitor
return to the Group List Items menu. It may be necessary to free some memory in the MAX II at this time.
Selecting the Starting Bolt Number
Note: Depending on the application and layout of the project, the user won’t
always want the starting bolt to be 1. This feature allows the user to define what the starting number will be.
1) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the new Group List Items until START BOLT NUM is highlighted.
2) Press the ENTER key to display the Digits Edit Box.
3) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll the highlighted value.
4) Press the LEFT and RIGHT arrow keys multiple times using the left button wheel to scroll the digit locations.
5) Repeat steps 3 & 4 until the START BOLT NUM value is correctly displayed.
6) Press the OK key to save the START BOLT NUM and return to the Group List Items menu, or ESC to cancel entering the START BOLT NUM.
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Note: If a value is enter that is greater than the maximum number of bolts allowed per group (250), an error message box “VALUE IS OUT OF RANGE” will be displayed.
7) Press the OK key to display the Digits Edit Box and re-enter the START BOLT NUM.
8) Press the OK key to save the START BOLT NUM and return to the Group
List Items menu, or ESC to cancel entering the START BOLT NUM.
Selecting the Auto Increment Direction
The Auto Increment feature gives the user the ability to specify which direction to advance the cursor after storing a reading.
1) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the new Group List Items until INCR. DIR is highlighted.
2) Press the LEFT and RIGHT arrow keys multiple times using the left button wheel to toggle the Increment direction NONE, NORTH, EAST, SOUTH, or WEST.
3) When the correct Increment direction is dis played, continue on to the next section “Saving the Group”.
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MAX II Bolt Tension Monitor
Saving the Group
Once all the parameters are set, the user has the option of saving or canceling the new group.
1) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the new Group List Items until CREATE NEW GROUP? is highlighted.
2) Press the ENTER key to accept the group parameters, and activate the confirmation screen.
3) Press the OK key to save the New Group, or the ESC key to cancel the New Group setup and return to the DATA menu.
4) Press the MEAS key to return to the measurement screen to begin
measuring reference lengths.
3.5 Setting the Approximate Length
In order to utilize the AUTO SET feature of the MAX II, when measuring reference lengths, the MAX II has to know where to start looking for the detection. We can accomplish this by entering an approximate length into the gauge. The MAX II will automatically take the value entered and scan +/- 5% in both directions of the approximate length for the detection signal. The approximate length is a very valuable feature that can be used to pin point a specific detection area. This feature will be further discussed later in the manual.
Setting the Approximate Length using the Hot Menus
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Dakota Ultrasonics
1) Press the MEAS key once to activate measure menu items. Press the MEAS key multiple times to move down and the ESC key multiple times to move up, until the ALEN cell is highlighted. Alternatively, press the UP and DOWN arrow keys multiple times using the left button wheel.
2) Press the ENTER key to display the Digits Edit Box.
3) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll the highlighted value.
4) Press the LEFT and RIGHT arrow keys multiple times using the left button wheel to scroll the digit locations.
5) Repeat steps 3 & 4 until the ALEN value is correctly displayed.
6)
Press the OK key to return to the measurement screen, or ESC to cancel entering the ALEN.
The user can also access and set the approximate length from the tabbed menus. However, this method is more tedious than making the adjustments using the Hot Menus. The procedure using the tabbed menus is outlined below:
Setting the Approximate Length using the Tabbed Menus
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MAX II Bolt Tension Monitor
1) Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right, and the ESC key multiple times to tab left, until the AUTO menu is highlighted and displaying the submenu items. Alternatively, press the LEFT and RIGHT arrow keys multiple times using the left button wheel.
2) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll through the sub menu items until APPROX. LEN. is highlighted.
3) Press the ENTER key to display the Digits Edit Box.
4) Press the UP and DOWN arrow keys multiple times using the left button wheel to scroll the highlighted value.
5) Press the LEFT and RIGHT arrow keys multiple times using the left button wheel to scroll the digit locations.
6) Repeat steps 4 & 5 until the Approx. Len. value is correctly displayed.
7) Press the OK key to set the Approx. Len. and return to the menu screen, or ESC to cancel entering the Approx. Len..
8) Finally, press the MEAS key to return to the measurement screen and begin measuring reference lengths.
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Dakota Ultrasonics
3.6 Measuring Reference Lengths
At this point, the MAX II is setup and ready to start measuring reference lengths. We’ve already setup a bolt group to store the reference length data, and now need to display the group storage locations prior to making measurements.
Storing a Reading
1) Press the MEAS key once to activate measure menu items. Press the MEAS key multiple times to move down and the ESC key multiple times to
move up until the LOG cell is highlighted. Alternatively, press the UP and DOWN arrow keys multiple times using the left button wheel.
Note: Pressing the key will automatically open the Group View Box.
2) Press the ENTER key to display the Group View Box.
3) Press the UP, DOWN, LEFT, & RIGHT arrow keys using the left button wheel to scroll the target cell cursor to the desired storage location.
Note: The approximate lengths must always be located in the first column A for all bolts in the group.
4) Place a small amount of couplant on the transducer and attached it to the bolt. Make sure that the transducer is seated so that there is no couplant
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