Cygnus M3-DIVE User manual

Cygnus DIVE
Ultrasonic Thickness Gauge for Divers
Operation Manual
Covers Gauge Model: M3-DIVE
Doc No. M3-DIVE-M-ENG_Iss9.docx
June 2021
(Mk3 DIVE Gauges)

Cygnus DIVE Operating Manual
M3-DIVE-M-ENG_Iss9.docx
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Contents
1. Introduction......................................................................7
Cygnus DIVE Underwater Thickness Gauge................................7
Cygnus Instruments...............................................................8
2. Gauge Kit Contents ...........................................................9
3. The DIVE Gauge ..............................................................10
Features of the DIVE Gauge ..................................................10
Fitting the DIVE Gauge .........................................................10
4. Batteries .........................................................................13
Important Notes..................................................................13
Use in Hyperbaric Conditions .................................................13
Shipping of Lithium Batteries.................................................13
Fitting the Battery ...............................................................13
Removing the Battery ..........................................................14
Charging the Battery............................................................15
5. Fitting the Ultrasonic Probe ............................................16
Important –Cap Fitment ......................................................16
Connecting the Probe ...........................................................16
Probe Calibration Check Message ...........................................17
Securing the Probe while Diving.............................................18
6. Ultrasonic Probes (Transducers).....................................19
Important Notes..................................................................19
Probe Types........................................................................19
Single Element Probes..........................................................19
Twin Element Probes............................................................20
Identifying Single or Twin Element Probes ...............................20
Probe Identification Band......................................................21
Probe Frequencies ...............................................................21
Probe Measurement Ranges ..................................................22
Probe Selection Chart...........................................................24
Single Element Probes and Protective Membranes.....................25
Changing the Protective Membrane on Single Element Probes.....26
Automatic Probe Type Detection ............................................27
Twin Element Probe Wear Indication.......................................27
7. Measure Modes ...............................................................28
Multiple Echo Mode (ME).......................................................28
Single Echo Mode (SE) .........................................................28

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Echo-Echo Mode (EE) ...........................................................29
Measuring Small Diameter Pipe & Tubes..................................30
8. Why should I Calibrate my Thickness Gauge?.................31
9. Using the DIVE Gauge.....................................................32
Turning the Gauge On ..........................................................32
Zeroing the Probe (twin crystal) ..........................................33
Turning the Gauge Off..........................................................33
Before Each Dive .................................................................34
The Measurement Screen......................................................35
No Probe Connected Message .............................................35
Low Battery Level .............................................................36
Displaying Thickness Measurements ....................................36
The A-Scan Display ...........................................................36
A-Scan Display in Single Echo Mode....................................37
Surface Preparation .............................................................37
Taking a Thickness Measurement ...........................................39
Measuring Small Pipe with Twin Crystal Probes.........................39
Signal Strength Indication.....................................................39
Echo Bars in Multiple Echo Mode ............................................40
Stability Indication in Single Echo & Echo-Echo Modes...............41
10. Interpreting the A-Scan Display in Multiple Echo Mode42
Pits and Flaws .....................................................................43
Heavy Corrosion..................................................................44
11. Interpreting the A-Scan Display in Single Echo Mode ..46
Measuring Over Corrosion Pits ...............................................47
12. Interpreting the A-Scan Display in Echo-Echo Mode ....49
13. Changing Gauge Settings.............................................50
The Two Button System........................................................50
Button Functions in Menus .................................................50
Button Functions in Setup Screens.......................................51
Gauge Settings Saved with Probe Type ...................................51
Displaying the Menu.............................................................52
Menu Tree Diagram .............................................................53
Data Logging Menu (DATA LOG MENU).................................54
A-Scan Range Setting (A-SCAN RANGE) ...............................54
Turning the A-Scan Display On or Off (A-SCAN DISPLAY)........55
Setting the Velocity of Sound (VELOCITY).............................55
Calibrating to a Known Thickness (CALIBRATE) .....................56
Two Point Calibration (CALIBRATE 2 POINT)..........................57

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Ladder Step Wedge ..........................................................57
Two Point Calibration Procedure .........................................58
Zeroing the Twin Crystal Probe (ZERO PROBE) ......................59
Material Velocity of Sound List (MATERIAL LIST)....................61
Measurement Units (UNITS) ...............................................62
Thickness Measurement Resolution (RESOLUTION) ................62
Multiple Echo Mode ..........................................................62
Single Echo and Echo-Echo Modes .....................................62
Deep Coat Feature (DEEP COAT) .........................................63
Changing the Measurement Mode (MEASURE MODE) ..............63
Probe Type Selection (PROBE TYPE).....................................64
Setting the Power Save Timer (POWER-SAVE TIMER) .............64
Calibration Lock Feature .......................................................65
14. Data Logging ...............................................................66
AutoLog Feature..................................................................66
Grouping Measurements .......................................................67
Measurement Screen while Data Logging.................................67
Starting a Data Logging Session (START LOGGING) ..................68
Ending a Data Logging Session (STOP LOGGING) .....................68
Starting a new Group of Measurements (START NEW GROUP) ....69
Deleting the Last Measurement (DELETE LAST) ........................69
Clearing the Data Logger Memory (CLEAR MEMORY) .................70
Viewing the Data Logging Status (DATA LOGGER STATUS).........71
Setting the AutoLog RELEASE period (DLOG RELEASE TIME) ......71
15. HelmetView Remote Display ........................................72
Fitting the Mounting Bracket..................................................72
16. Topside Repeater Remote Display Kit ..........................74
Part Numbers......................................................................74
Kit Contents........................................................................74
Operation...........................................................................75
Turning the Unit On...........................................................75
Turning the Unit Off ..........................................................75
Changing the Displayed Units .............................................75
Display Hold Function ........................................................75
Automatic Display Backlight................................................75
Connecting to the DIVE Gauge............................................75
Testing the Link................................................................76
Changing the Batteries ......................................................76
Topside Repeater with Video Overlay ......................................76

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Connecting the Video Signal ...............................................77
Positioning the On-Screen Display .......................................77
17. CygLink Surface Display and Control Kit ......................79
Part Numbers......................................................................79
Kit Contents........................................................................79
Connection Diagram.............................................................80
Connector Details and Signals ...............................................80
Using CygLink with HelmetView .............................................80
Installing CygLink ................................................................81
Requirements...................................................................81
Upgrading........................................................................81
Installing .........................................................................81
COM Port Numbers ..............................................................82
Setting the COM Port Manually............................................82
Finding your COM Port Number ...........................................82
Connecting to the Gauge ......................................................83
First time USB Connection..................................................83
Connecting the Gauge to CygLink for the First Time ...............84
Connecting to the Gauge Afterwards ....................................85
Disconnecting from the Gauge ............................................85
Manual Connection Settings................................................85
Changing Gauge Settings......................................................86
Material Velocity List .........................................................86
A-Scan Measurement Cursors................................................87
Using the A-Scan Cursors with Twin Crystal Probes ................87
CygLink Surveys and Data Logging.........................................88
Editing the Survey Details ..................................................89
Editing the Survey Group Details.........................................90
Producing a Survey Report Document ..................................90
Transferring Data Logged Measurements from the DIVE gauge ...91
Logging Measurements Directly in CygLink ..............................92
Reference and Minimum Thickness Criteria ...........................92
Pre-Set Measurement Comments List...................................92
Adding Comments or Notes to a Measurement ......................93
To Change the COM Port number assigned by Windows®...........94
Opening Device Manager....................................................94
CygLink Trouble Shooting .....................................................95
Connection Problems –USB Drivers.....................................95
Wiring Problems ...............................................................96

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18. General Points on Thickness Gauging using Multiple
Echo Measurements..............................................................97
19. Care and Servicing.......................................................98
Cleaning the Gauge..............................................................98
Batteries ............................................................................98
Environmental.....................................................................98
Repairs ..............................................................................99
Returning the Gauge for Servicing..........................................99
20. Replaceable Parts ......................................................100
Wrist Strap....................................................................... 100
Push Buttons .................................................................... 100
21. Spares and Accessories List.......................................101
Ultrasonic Probes............................................................... 101
Probe Spares for S*C 13mm (½”) Probes .............................. 101
Probe Spares for S*A 6mm (¼”) Probes................................ 101
Gauge Spares ................................................................... 102
Accessories....................................................................... 102
Miscellaneous Spares ......................................................... 103
22. Technical Specifications.............................................104
23. Table of Sound Velocities...........................................107
Reading Conversions ....................................................... 108
24. Recycling and Disposal (EC Countries).......................109
25. Shipping of Lithium-Ion Batteries..............................110
Battery Information ........................................................... 110
26. Warranty Information................................................111
27. Pressure Test Statement............................................112
28. Connection Diagram: Umbilical Cable ........................113
29. Connection Diagram: Umbilical to TSR.......................114
30. Connection Diagram: DIVE to Umbilical .....................115
31. Index .........................................................................116

Cygnus DIVE Operating Manual
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1. Introduction
Cygnus DIVE Underwater Thickness Gauge
The Cygnus DIVE Underwater Thickness Gauge has been
specifically designed for the professional diver undertaking metal
thickness surveys in both shallow and deep water sites. It has
been design to withstand the extreme environments encountered
while providing quick, clear and accurate metal thickness
measurements using the Cygnus Multiple Echo technique and
Single Echo / Echo-Echo options.
The Cygnus DIVE Underwater Thickness gauge is pressure rated to
a maximum depth of 300 meters sea water (984 ft).
The gauge can be worn on the diver’s fore-arm allowing one hand
to remain free while carrying out the thickness survey. A bright
colour display shows the thickness measurement in large numbers.
Thickness measurements are further backed up by an A-scan
display. Measurement data can be sent to the surface via a RS-
485 serial data link where they can be data logged and used to
produce a survey report using Cygnus’CygLink software.
Measurements can be displayed in Metric (mm) or Imperial (inch)
units and measurement resolution can be selected from 0.01
1
,
0.05 or 0.1 mm, (0.001
2
, 0.002 or 0.005 inch). Thickness
measurements can easily be calibrated to a known thickness or to
a known Velocity of Sound.
The gauge is a solid-state electronic instrument which, under
normal operating conditions, will give many years of active
service.
Although designed for ease of operation first time users
should carefully read this manual to familiarise themselves
with the features of the gauge
1
Single Echo Mode Only
2
Single Echo Mode Only

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Cygnus Instruments
Cygnus Instruments Limited, founded in 1983, pioneered the
development of the Digital Ultrasonic Multiple-Echo Technique
used for measurement through coatings. This has long since been
the standard required to ensure that accurate measurements are
taken without the need to zero the gauge or remove any coatings
first.
Our philosophy is to work closely our customers to provide high
quality products, engineered to serve heavy industry & harsh
environments. Cygnus Ultrasonic thickness gauges are designed to
be reliable and simple to use. We have an unrivalled reputation in
over 45 countries around the world.
CYGNUS Instruments Ltd.
Cygnus House, 30 Prince of Wales Road,
Dorchester, Dorset, DT1 1PW England.
Website: www.cygnus-instruments.com
Tel: [phone]
Fax: [phone]
[e-mail]
Cygnus UAE
Cygnus Instruments Middle East
P.O. Box 127267
Jebel Ali Free Zone (JAFZA)
Dubai, UAE
Website: www.cygnus-instruments.com
Telephone: [phone]
[e-mail]
CYGNUS Instruments Inc.
Cygnus Instruments, Inc.
6900 Phillips Hwy, Suite 8
Jacksonville, FL 32216, USA.
Tel: [phone]
Fax: [phone]
www.cygnusinstruments.com
[e-mail]
CYGNUS Singapore (S) Pty. Ltd.
63 Jalan Pemimpin
#04-01 Pemimpin Industrial Building
Singapore 577219
Tel : [phone]
Fax : [phone]
www.cygnus-instruments.sg
[e-mail]

Cygnus DIVE Operating Manual
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2. Gauge Kit Contents
The DIVE gauge is supplied as a complete kit in a tough Peli®
transportation case. Everything you need to begin taking thickness
measurements is included in the kit.
1. Cygnus DIVE Gauge Body and Wrist Strap
2. Ultrasonic Probe(s) with Coiled Cable
3. Two Rechargeable Batteries
4. Membrane Couplant, 25ml bottle
5. Battery Charger and Charger Base
6. AC Mains Lead for Battery Charger
7. Ultrasonic Couplant Gel (Blue), 100ml bottle
8. Test Block 15mm (or ½”) thick in Mild Steel
9. Spare Probe Membranes
10. Membrane Key
11. Silicone Grease, 50g tube
12. USB Flash Drive with Documentation
3
13. Calibration Certificate
14. Operating Manual
3
With Data Logging Option and software

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3. The DIVE Gauge
Features of the DIVE Gauge
Left Side View showing Button, Battery
& Probe Connector with Cap Fitted
Right Side View showing Button,
Battery Retaining Screw & Probe
Connector
Fitting the DIVE Gauge
The DIVE gauge can be worn on the fore-arm of the diver allowing
one hand to remain free during thickness surveys. The gauge is
secured with a tough elasticated strap with a quick release buckle,
the strap can be tightened easily using one hand and being
elasticated it will maintain its grip on the diver’s dry suit.
Probe
Connector
(Cap Fitted)
Left
Button
Battery
Probe
Connector
Right
Button
Colour
Display
Battery
Screw