LMI Technologies Gocator 2130 User manual

USER MANUAL
Gocator Line Profile Sensors
Gocator 2100, 2300, 2400 Series; Gocator 2880
Firmware version:4.7.x.xx
Document revision:D

Gocator Line Profile Sensors: User Manual 2
Copyright
Copyright © 2017 by LMI Technologies, Inc. All rights reserved.
Proprietary
This document, submitted in confidence, contains proprietary information which shall not be
reproduced or transferred to other documents or disclosed to others or used for manufacturing or any
other purpose without prior written permission of LMI Technologies Inc.
No part of this publication may be copied, photocopied, reproduced, transmitted, transcribed, or
reduced to any electronic medium or machine readable form without prior written consent of LMI
Technologies, Inc.
Trademarks and Restrictions
Gocator™ is a registered trademark of LMI Technologies, Inc. Any other company or product names
mentioned herein may be trademarks of their respective owners.
Information contained within this manual is subject to change.
This product is designated for use solely as a component and as such it does not comply with the
standards relating to laser products specified in U.S. FDA CFR Title 21 Part 1040.
Contact Information
LMI Technologies, Inc.
9200 Glenlyon Parkway
Burnaby BCV5J 5J8
Canada
Telephone: [phone]
Fax: [phone]
www.lmi3D.com

Gocator Line Profile Sensors: User Manual 3
Table of Contents
Copyright 2
Table of Contents 3
Introduction 12
Gocator Overview 13
Safety and Maintenance 14
Laser Safety 14
Laser Classes 15
Precautions and Responsibilities 15
Class 3B Responsibilities 16
Nominal Ocular Hazard Distance (NOHD) 17
Systems Sold or Used in the USA 18
Electrical Safety 18
Handling, Cleaning, and Maintenance 19
Environment and Lighting 19
Getting Started 21
Hardware Overview 22
Gocator Sensor 22
Gocator Cordsets 22
Master 100 23
Master 400 / 800 / 1200 / 2400 24
Master 810 / 2410 25
Calibration Targets 27
System Overview 27
Standalone System 27
Dual-Sensor System 28
Multi-Sensor System 29
Installation 30
Mounting 30
Orientations 31
Grounding 33
Gocator 33
Recommended Practices for Cordsets 33
Master Network Controllers 34
Grounding When Using a DIN Rail (Master
810/2410) 35
Installing DIN Rail Clips: Master 810 or 2410 35
Configuring Master 810 36
Setting the Divider 37
Encoder Quadrature Frequency 37
Setting the Debounce Period 38
Rut-Scanning System Setup 38
Layout 38
System Setup 39
Software Configuration 40
System Operation 40
Network Setup 41
Client Setup 41
Gocator Setup 44
Running a Standalone Sensor System 44
Running a Dual-Sensor System 45
Next Steps 48
How Gocator Works 49
3D Acquisition 49
Clearance Distance, Field of Viewand
Measurement Range 50
Resolution and Accuracy 51
X Resolution 51
Z Resolution 52
Z Linearity 52
Profile Output 54
Coordinate Systems 54
Sensor Coordinates 54
System Coordinates 55
Part and Section Coordinates 58
Switching between Coordinate Systems 58
Spacing (Data Resampling) 59
Data Generation and Processing 60
Surface Generation 60
Part Detection 60
Sectioning 61
Part Matching 61
Measurement and Anchoring 62
Output and Digital Tracking 62
Gocator Web Interface 64
Unblocking Flash 64
Google Chrome 64
Internet Explorer 65
Firefox 66
Microsoft Edge 67
User Interface Overview 69
Toolbar 70
Creating, Saving and Loading Jobs (Settings) 71

Gocator Line Profile Sensors: User Manual 4
Recording, Playback, and Measurement
Simulation 72
Recording Filtering 74
Downloading, Uploading, and Exporting
Replay Data 75
Metrics Area 78
Data Viewer 78
Status Bar 78
Log 79
Frame Information 79
Interface Language 80
Quick Edit Mode 80
Management and Maintenance 81
Manage Page Overview 81
Sensor System 82
Dual- and Multi-sensor Systems 82
Buddy Assignment 83
Over Temperature Protection 84
Sensor Autostart 84
Layout 84
Device Exposure Multiplexing 91
Networking 92
Motion and Alignment 93
Alignment Reference 93
Encoder Resolution 94
Encoder Value and Frequency 94
Travel Speed 94
Jobs 95
Security 96
Maintenance 97
Sensor Backups and Factory Reset 98
Firmware Upgrade 99
Support 100
Support Files 101
Manual Access 101
Software Development Kit 102
Scan Setup and Alignment 103
Scan Page Overview 103
Scan Modes 104
Triggers 105
Trigger Examples 109
Trigger Settings 110
Maximum Input Trigger Rate 112
Maximum Encoder Rate 112
Sensor 112
Active Area 112
Tracking Window 114
Transformations 115
Exposure 117
Single Exposure 118
Dynamic Exposure 118
Multiple Exposure 119
Spacing 121
Sub-Sampling 121
Spacing Interval 122
Advanced 123
Material 124
Camera Gain and Dynamic Exposure 125
Alignment 125
Alignment States 125
Alignment Types 126
Alignment: with and without Encoder
Calibration 126
Aligning Sensors 126
Clearing Alignment 130
Filters 130
Gap Filling 131
Median 132
Smoothing 132
Decimation 133
Surface Generation 134
Part Detection 137
Part Detection Status 141
Edge Filtering 143
Data Viewer 144
Data Viewer Controls 144
Video Mode 147
Exposure Information 147
Exposures 147
Overexposure and Underexposure 148
Spots and Dropouts 149
Profile Mode 150
Surface Mode 152
Height Map Color Scale 155
Sections 155

Gocator Line Profile Sensors: User Manual 5
Region Definition 157
Intensity Output 158
Models 159
Model Page Overview 159
Part Matching 160
Using Edge Detection 161
Creating a Model 164
Modifying a Model's Edge Points 166
Adjusting Target Sensitivity 169
Setting the Match Acceptance Criteria 170
Running Part Matching 170
Using Bounding Box and Ellipse 170
Configuring a Bounding Box or an Ellipse172
Running Part Matching 173
Using Part Matching to Accept or Reject a
Part 174
Sections 174
Creating a Section 177
Deleting a Section 179
Measurement 180
Measure Page Overview 180
Data Viewer 181
Tools Panel 182
Adding and Configuring a Measurement
Tool 182
Source 183
Streams (Sections) 184
Regions 184
Feature Points 187
Fit Lines 189
Geometric Features 190
Decisions 191
Filters 192
Measurement Anchoring 194
Enabling and Disabling Measurements 199
Editing a Tool or Measurement Name 200
Changing a Measurement ID 200
Duplicating a Tool 201
Removing a Tool 201
Reordering Tools 202
Profile Measurement 202
Area 202
Measurements, Features, and Settings 204
Bounding Box 206
Measurements, Features, and Settings 207
Bridge Value 209
Understanding the Window and Skip
Settings 210
Measurements and Settings 211
Using Window and StdDev as Metrics
Measurements 213
Circle 214
Measurements, Features, and Settings 215
Dimension 216
Groove 219
Intersect 223
Measurements, Features, and Settings 223
Line 225
Measurements, Features, and Settings 226
Panel 229
Position 232
Measurements, Features, and Settings 233
Round Corner 235
Strip 238
Script 242
Surface Measurement 244
Bounding Box 245
Measurements, Features, and Settings 246
Countersunk Hole 249
Measurements, Features, and Settings 252
Dimension 258
Edge 262
Paths and Path Profiles 265
Measurements, Features, and Settings 266
Ellipse 276
Measurements, Features, and Settings 277
Hole 279
Measurements, Features, and Settings 281
Measurement Region 283
Opening 284
Measurements, Features, and Settings 287
Measurement Region 291
Plane 291
Measurements, Features, and Settingss 294
Position 295
Measurements, Features, and Settingss 296

Gocator Line Profile Sensors: User Manual 6
Stud 298
Measurements, Features, and Settings 300
Measurement Region 302
Volume 302
Script 304
Feature Measurement 305
Dimension 305
Intersect 309
Scripts 313
Built-in Functions 313
Output 318
Output Page Overview 318
Ethernet Output 319
Digital Output 323
Analog Output 326
Serial Output 327
Dashboard 330
Dashboard Page Overview 330
State and Health Information 330
Statistics 332
Measurements 332
Performance 332
Gocator Emulator 334
System Requirements 334
Limitations 335
Downloading a Support File 335
Running the Emulator 336
Adding a Scenario to the Emulator 337
Running a Scenario 337
Removing a Scenario from the Emulator 338
Using Replay Protection 339
Stopping and Restarting the Emulator 339
Running the Emulator in Default Browser 339
Working with Jobs and Data 340
Creating, Saving, and Loading Jobs 340
Playback and Measurement Simulation 341
Downloading, Uploading, and Exporting
Replay Data 342
Downloading and Uploading Jobs 345
Scan, Model, and Measurement Settings 346
Calculating Potential Maximum Frame Rate 346
Protocol Output 347
Remote Operation 347
Gocator Accelerator 349
System Requirements 350
Benefits 350
Installation 350
Gocator Accelerator Utility 350
Dashboard and Health Indicators 353
SDK Application Integration 353
Gocator Device Files 355
Live Files 355
Log File 355
Job File Structure 356
Job File Components 356
Accessing Files and Components 357
Configuration 357
Setup 358
Filters 359
XSmoothing 359
YSmoothing 359
XGapFilling 360
YGapFilling 360
XMedian 360
YMedian 360
XDecimation 361
YDecimation 361
XSlope 361
YSlope 361
Trigger 362
Layout 363
Alignment 364
Disk 365
Bar 365
Plate 366
Devices / Device 366
Tracking 369
Material 369
IndependentExposures 371
SurfaceGeneration 371
FixedLength 372
VariableLength 372
Rotational 372
SurfaceSections 373

Gocator Line Profile Sensors: User Manual 7
ProfileGeneration 373
FixedLength 374
VariableLength 374
Rotational 374
PartDetection 374
EdgeFiltering 376
PartMatching 376
Edge 376
BoundingBox 376
Ellipse 377
Replay 378
RecordingFiltering 378
Conditions/AnyMeasurement 378
Conditions/AnyData 379
Conditions/Measurement 379
Streams/Stream (Read-only) 379
ToolOptions 380
MeasurementOptions 381
FeatureOptions 381
StreamOptions 382
Tools 382
Profile Types 382
ProfileFeature 382
ProfileLine 383
ProfileRegion2d 383
SurfaceTypes 383
Region3D 383
SurfaceFeature 383
SurfaceRegion2d 384
Geometric Feature Types 384
Parameter Types 384
ProfileArea 386
ProfileBoundingBox 388
ProfileBridgeValue 389
ProfileCircle 391
ProfileDimension 392
ProfileGroove 394
ProfileIntersect 396
ProfileLine 397
ProfilePanel 399
ProfilePosition 402
ProfileRoundCorner 403
ProfileStrip 405
Script 407
SurfaceBoundingBox 407
SurfaceCsHole 409
SurfaceDimension 412
Tool 414
SurfaceEllipse 417
SurfaceHole 418
SurfaceOpening 421
SurfacePlane 423
SurfacePosition 425
SurfaceStud 426
SurfaceVolume 429
Tool 431
Tool 432
Custom 433
Output 434
Ethernet 434
Ascii 437
EIP 437
Modbus 437
Digital0 and Digital1 438
Analog 438
Serial 439
Selcom 440
Ascii 440
Transform 440
Device 441
Part Models 442
Edge Points 443
Configuration 443
Protocols 445
Gocator Protocol 445
Data Types 446
Commands 446
Discovery Commands 447
Get Address 447
Set Address 448
Get Info 449
Control Commands 450
Protocol Version 451
Get Address 451

Gocator Line Profile Sensors: User Manual 8
Set Address 452
Get System Info V2 452
Get System Info 455
Get States 456
Log In/Out 457
Change Password 457
Assign Buddies 458
Remove Buddies 459
Set Buddy 459
List Files 459
Copy File 460
Read File 460
Write File 461
Delete File 462
User Storage Used 462
User Storage Free 462
Get Default Job 463
Set Default Job 463
Get Loaded Job 463
Get Alignment Reference 464
Set Alignment Reference 464
Clear Alignment 465
Get Timestamp 465
Get Encoder 465
Reset Encoder 466
Start 466
Scheduled Start 467
Stop 467
Get Auto Start Enabled 467
Set Auto Start Enabled 468
Get Voltage Settings 468
Set Voltage Settings 469
Get Quick Edit Enabled 469
Set Quick Edit Enabled 469
Start Alignment 470
Start Exposure Auto-set 470
Software Trigger 471
Schedule Digital Output 471
Schedule Analog Output 472
Ping 472
Reset 473
Backup 473
Restore 474
Restore Factory 474
Get Recording Enabled 475
Set Recording Enabled 475
Clear Replay Data 476
Get Playback Source 476
Set Playback Source 476
Simulate 477
Seek Playback 477
Step Playback 478
Playback Position 478
Clear Measurement Stats 479
Read Live Log 479
Clear Log 479
Simulate Unaligned 480
Acquire 480
Acquire Unaligned 480
Create Model 481
Detect Edges 481
Add Tool 482
Add Measurement 482
Read File (Progressive) 483
Export CSV (Progressive) 483
Export Bitmap (Progressive) 484
Get Runtime Variable Count 485
Set Runtime Variables 485
GetRuntimeVariables 486
Upgrade Commands 486
Start Upgrade 487
Start Upgrade Extended 487
Get Upgrade Status 487
Get Upgrade Log 488
Results 488
Data Results 488
Stamp 489
Video 490
Profile 490
Resampled Profile 491
Profile Intensity 492
Resampled Profile Intensity 492
Surface 493
Surface Intensity 494

Gocator Line Profile Sensors: User Manual 9
Surface Section 494
Surface Section Intensity 495
Measurement 496
Operation Result 496
Exposure Calibration Result 497
Edge Match Result 497
Bounding Box Match Result 498
Ellipse Match Result 498
Event 498
Feature Point 499
Feature Line 499
Health Results 499
Modbus Protocol 505
Concepts 505
Messages 505
Registers 506
Control Registers 507
Output Registers 508
State 508
Stamp 509
Measurement Registers 510
EtherNet/IP Protocol 512
Concepts 512
Basic Object 513
Identity Object (Class 0x01) 513
TCP/IP Object (Class 0xF5) 513
Ethernet Link Object (Class 0xF6) 513
Assembly Object (Class 0x04) 514
Command Assembly 514
Runtime Variable Configuration Assembly 515
Sensor State Assembly 516
Sample State Assembly 517
Implicit Messaging Command Assembly 518
Implicit Messaging Output Assembly 519
ASCIIProtocol 521
Connection Settings 521
Ethernet Communication 521
Serial Communication 522
Polling Operation Commands (Ethernet Only) 522
Command and Reply Format 523
Special Characters 523
Command Channel 523
Start 524
Stop 524
Trigger 524
LoadJob 525
Stamp 525
Clear Alignment 526
Moving Alignment 526
Stationary Alignment 526
Set Runtime Variables 527
Get Runtime Variables 527
Data Channel 527
Result 527
Value 528
Decision 529
Health Channel 529
Health 530
Standard Result Format 530
Custom Result Format 531
Selcom Protocol 532
Serial Communication 532
Connection Settings 532
Message Format 532
Development Kits 534
GoSDK 534
Setup and Locations 535
Class Reference 535
Examples 535
Sample Project Environment Variable 535
Header Files 535
Class Hierarchy 535
GoSystem 536
GoSensor 536
GoSetup 536
GoLayout 536
GoTools 537
GoTransform 537
GoOutput 537
Data Types 537
Value Types 537
Output Types 537
GoDataSet Type 538
MeasurementValues and Decisions 539

Gocator Line Profile Sensors: User Manual 10
Operation Workflow 539
Initialize GoSdk APIObject 540
Discover Sensors 541
Connect Sensors 541
Configure Sensors 541
Enable Data Channels 541
Perform Operations 541
Limiting Flash Memory Write Operations 543
GDK 544
Benefits 544
Supported Sensors 544
Typical Workflow 545
Installation and Class Reference 545
Required Tools 545
Getting Started with the Example Code 546
Building the Sample Code 546
Tool Registration 546
Tool Definitions 547
Entry Functions 547
Parameter Configurations 548
Graphics Visualization 549
Debugging Your Measurement Tools 551
Debugging Entry Functions 552
Tips 552
Backward Compatibility with Older Versions
of Tools 552
Define new parameters as optional 552
Configuration Versioning 552
Version 554
Common Programming Operations 554
Input Data Objects 554
Setup and Region Info during Tool
Initialization 555
Computing Region Based on the Offset
from an Anchor Source 555
Part Matching 556
Accessing Sensor Local Storage 556
Print Output 556
Tools and Native Drivers 557
Sensor Discovery Tool 557
GenTL Driver 558
16-bit RGB Image 562
16-bit Grey Scale Image 563
Registers 565
XMLSettings File 566
Interfacing with Halcon 566
Setting Up Halcon 567
Halcon Procedures 570
Generating Halcon Acquisition Code 574
CSV Converter Tool 575
MountainsMap Transfer Tool 577
Configuring Gocator to Work with the Transfer
Tool 578
Using the Mountains Map Transfer Tool 578
Troubleshooting 581
Specifications 583
Sensors 583
Gocator 2100 & 2300 Series 583
Gocator 2320 586
Gocator 2130 and 2330 588
Gocator 2140 and 2340 590
Gocator 2342 592
Gocator 2150 and 2350 594
Gocator 2170 and 2370 597
Gocator 2375 600
Gocator 2180 and 2380 603
Gocator 2400 Series 606
Gocator 2410 608
Gocator 2420 611
Gocator 2880 Sensor 614
Gocator 2880 615
Sensor Connectors 618
Gocator Power/LAN Connector 618
Grounding Shield 618
Power 619
Laser Safety Input 619
Gocator I/O Connector 620
Grounding Shield 620
Digital Outputs 620
Inverting Outputs 621
Digital Input 621
Encoder Input 622
Serial Output 623
Selcom Serial Output 623
Analog Output 623

Gocator Line Profile Sensors: User Manual 11
Master Network Controllers 625
Master 100 625
Master 100 Dimensions 626
Master 400/800 627
Master 400/800 Electrical Specifications 628
Master 400/800 Dimensions 630
Master 810/2410 631
Electrical Specifications 633
Encoder 634
Input 636
Master 810 Dimensions 638
Master 2410 Dimensions 639
Master 1200/2400 640
Master 1200/2400 Electrical Specifications 641
Master 1200/2400 Dimensions 642
Accessories 643
Return Policy 645
Software Licenses 646
Support 652
Contact 653

Gocator Line Profile Sensors: User Manual 12
Introduction
This documentation describes how to connect, configure, and use a Gocator. It also contains reference
information on the device's protocols and job files, as well as an overview of the development kits you
can use with Gocator. Finally, the documentation describes the Gocator emulator and accelerator
applications.
The documentation applies to the following sensors:
lGocator 2100 series
lGocator 2300 series
lGocator 2400 series
lGocator 2880
B revision Gocator sensors are only supported by firmware version 4.3 or later. These sensors
are compatible with SDKapplications built with version 4.x of the SDK. The sensors are also
compatible with jobs created on sensors running firmware 4.3.
C revision Gocator sensors are only supported by firmware version 4.5 SR1 or later. These
sensors are compatible with SDKapplications built with version 4.x of the SDK. The sensors are
also compatible with jobs created on sensors running firmware 4.x.
Notational Conventions
This documentation uses the following notational conventions:
Follow these safety guidelines to avoid potential injury or property damage.
Consider this information in order to make best use of the product.

Gocator Line Profile Sensors: User Manual 13
Gocator Overview
Gocator laser profile sensors are designed for 3D measurement and control applications. Gocator
sensors are configured using a web browser and can be connected to a variety of input and output
devices. Gocator sensors can also be configured using the provided development kits.

Gocator Line Profile Sensors: User Manual 14
Safety and Maintenance
The following sections describe the safe use and maintenance of Gocator sensors.
Laser Safety
Gocator sensors contain semiconductor lasers that emit visible or invisible light and are designated as
Class 2M, Class 3R, or Class 3B, depending on the chosen laser option. For more information on the laser
classes used in Gocator sensors, Laser Classes on the next page.
Gocator sensors are referred to as components, indicating that they are sold only to qualified customers
for incorporation into their own equipment. These sensors do not incorporate safety items that the
customer may be required to provide in their own equipment (e.g., remote interlocks, key control; refer
to the references below for detailed information). As such, these sensors do not fully comply with the
standards relating to laser products specified in IEC 60825-1 and FDA CFR Title 21 Part 1040.
Use of controls or adjustments or performance of procedures other than those specified herein
may result in hazardous radiation exposure.
References
1. International standard IEC 60825-1 (2001-08) consolidated edition, Safety of laser products – Part 1:
Equipment classification, requirements and user's guide.
2. Technical report 60825-10, Safety of laser products – Part 10. Application guidelines and explanatory
notes to IEC 60825-1.
3. Laser Notice No. 50, FDA and CDRH (https://www.fda.gov/Radiation-Emit-
tingProducts/ElectronicProductRadiationControlProgram/default.htm)

Gocator Line Profile Sensors: User Manual Safety and Maintenance • 15
Laser Classes
Class 3R laser components
Class 3R laser products emit radiation where direct
intrabeam viewing is potentially hazardous, but the
risk is lower with 3R lasers than for 3B lasers. Fewer
manufacturing requirements and control measures
for 3R laser users apply than for 3B lasers. Eye
protection and protective clothing are not required.
The laser beam must be terminated at the end of
an appropriate path. Avoid unintentional
reflections. Personnel must be trained in working
with laser equipment.
Class 3B laser components
Class 3B components are unsafe for eye exposure.
Usually only eye protection is required. Protective
gloves may also be used. Diffuse reflections are
safe if viewed for less than 10 seconds at a
minimum distance of 13 cm. There is a risk of fire if
the beam encounters flammable materials. The
laser area must be clearly identified. Use a key
switch or other mechanism to prevent
unauthorized use. Use a clearly visible indicator to
show that a laser is in use, such as “Laser in
operation.” Restrict the laser beam to the working
area. Ensure that there are no reflective surfaces in
this area.
Labels reprinted here are examples only. For accurate specifications, refer to the label on your
sensor.
For more information, see Precautions and Responsibilities below.
Precautions and Responsibilities
Precautions specified in IEC 60825-1 and FDA CFR Title 21 Part 1040 are as follows:
Requirement Class 2M Class 3R Class 3B
Remote interlock Not required Not required Required*
Key control Not required Not required Required – cannot remove
key when in use*
Power-on delays Not required Not required Required*
Beam attenuator Not required Not required Required*

Gocator Line Profile Sensors: User Manual Safety and Maintenance • 16
Requirement Class 2M Class 3R Class 3B
Emission indicator Not required Not required Required*
Warning signs Not required Not required Required*
Beam path Not required Terminate beam at useful
length
Terminate beam at useful
length
Specular reflection Not required Prevent unintentional
reflections
Prevent unintentional
reflections
Eye protection Not required Not required Required under special
conditions
Laser safety officer Not required Not required Required
Training Not required Required for operator and
maintenance personnel
Required for operator and
maintenance personnel
*LMI Class 3B laser components do not incorporate these laser safety items. These items must be added and completed by customers
in their system design. For more information, see Class 3B Responsibilities below.
Class 3B Responsibilities
LMI Technologies has filed reports with the FDA to assist customers in achieving certification of laser
products. These reports can be referenced by an accession number, provided upon request. Detailed
descriptions of the safety items that must be added to the system design are listed below.
Remote Interlock
A remote interlock connection must be present in Class 3B laser systems. This permits remote switches
to be attached in serial with the keylock switch on the controls. The deactivation of any remote switches
must prevent power from being supplied to any lasers.
Key Control
A key operated master control to the lasers is required that prevents any power from being supplied to
the lasers while in the OFF position. The key can be removed in the OFF position but the switch must not
allow the key to be removed from the lock while in the ON position.
Power-On Delays
A delay circuit is required that illuminates warning indicators for a short period of time before supplying
power to the lasers.
Beam Attenuators
A permanently attached method of preventing human access to laser radiation other than switches,
power connectors or key control must be employed.
Emission Indicator
It is required that the controls that operate the sensors incorporate a visible or audible indicator when
power is applied and the lasers are operating. If the distance between the sensor and controls is more
than 2 meters, or mounting of sensors intervenes with observation of these indicators, then a second
power-on indicator should be mounted at some readily-observable position. When mounting the

Gocator Line Profile Sensors: User Manual Safety and Maintenance • 17
warning indicators, it is important not to mount them in a location that would require human exposure
to the laser emissions. User must ensure that the emission indicator, if supplied by OEM, is visible when
viewed through protective eyewear.
Warning Signs
Laser warning signs must be located in the vicinity of the sensor such that they will be readily observed.
Examples of laser warning signs are as follows:
FDA warning sign example IEC warning sign example
Nominal Ocular Hazard Distance (NOHD)
Nominal Ocular Hazard Distance (NOHD)is the distance from the source at which the intensity or the
energy per surface unit becomes lower than the Maximum Permissible Exposure (MPE) on the cornea
and on the skin.
The laser beam is considered dangerous if the operator is closer to the source than the NOHD.
The following table shows example calculations of the NOHDvalues for each Gocator model and laser
class, assuming continuous operation of the laser. As a configurable device the Gocator, lets you set the
laser exposure (laser on-time) independently of the frame period (total cycle time for data acquisition).
Continuous operation of the laser means that the laser exposure is configured to be identical to the
frame period, which is also referred to as 100% duty cycle. However, in many applications the laser
exposure can be smaller than the frame period (less than 100% duty cycle) thereby reducing the NOHD.
The table therefore shows the worst-case NOHD.
Model Laser Class Model Constant Class IMPE(mW) Class IIMPE(mw) Class INOHD(mm) Class IINOHD
(mm)
2x20 2M 101 0.39 0.98 259 103
2x30 2M 101 0.39 0.98 259 103
3R 351 0.39 0.98 900 358
3B 2246 0.39 0.98 5759 2292
2x40 2M 101 0.39 0.98 259 103
3R 351 0.39 0.98 900 358
3B 2246 0.39 0.98 5759 2292

Gocator Line Profile Sensors: User Manual Safety and Maintenance • 18
Model Laser Class Model Constant Class IMPE(mW) Class IIMPE(mw) Class INOHD(mm) Class IINOHD
(mm)
2x50 2M 101 0.39 0.98 259 103
3R 351 0.39 0.98 900 358
3B 2246 0.39 0.98 5759 2292
2x70 2M 98 0.39 0.98 251 100
3R 341 0.39 0.98 875 348
3B 1422 0.39 0.98 3645 1451
2x75 3B-N 8817 0.64 13777
2x80 2M 95 0.39 0.98 245 97
3R 335 0.39 0.98 859 342
3B 1031 0.39 0.98 2645 1052
To calculate the NOHDvalue for a specific laser class, use the following formula:
NOHD= Model Constant / MPE
Model Constant includes a consideration of the fan angle for the individual models.
Systems Sold or Used in the USA
Systems that incorporate laser components or laser products manufactured by LMI Technologies
require certification by the FDA.
Customers are responsible for achieving and maintaining this certification.
Customers are advised to obtain the information booklet Regulations for the Administration and
Enforcement of the Radiation Control for Health and Safety Act of 1968: HHS Publication FDA 88-8035.
This publication, containing the full details of laser safety requirements, can be obtained directly from
the FDA, or downloaded from their web site at https://www.fda.gov/Radiation-
EmittingProducts/ElectronicProductRadiationControlProgram/default.htm.
Electrical Safety
Failure to follow the guidelines described in this section may result in electrical shock or equipment
damage.
Sensors should be connected to earth ground
All sensors should be connected to earth ground through their housing. All sensors should be mounted
on an earth grounded frame using electrically conductive hardware to ensure the housing of the sensor
is connected to earth ground. Use a multi-meter to check the continuity between the sensor connector
and earth ground to ensure a proper connection.
Minimize voltage potential between system ground and sensor ground
Care should be taken to minimize the voltage potential between system ground (ground reference for
I/O signals) and sensor ground. This voltage potential can be determined by measuring the voltage

Gocator Line Profile Sensors: User Manual Safety and Maintenance • 19
between Analog_out- and system ground. The maximum permissible voltage potential is 12 V but should
be kept below 10 V to avoid damage to the serial and encoder connections.
For a description of the connector pins, see Gocator I/O Connector on page 620.
Use a suitable power supply
The +24 to +48 VDC power supply used with Gocator sensors should be an isolated supply with inrush
current protection or be able to handle a high capacitive load.
Use care when handling powered devices
Wires connecting to the sensor should not be handled while the sensor is powered. Doing so may cause
electrical shock to the user or damage to the equipment.
Handling, Cleaning, and Maintenance
Dirty or damaged sensor windows (emitter or camera) can affect accuracy. Use caution when
handling the sensor or cleaning the sensor's windows.
Keep sensor windows clean
Use dry, clean air to remove dust or other dirt particles. If dirt remains, clean the windows carefully with
a soft, lint-free cloth and non-streaking glass cleaner or isopropyl alcohol. Ensure that no residue is left
on the windows after cleaning.
Turn off lasers when not in use
LMI Technologies uses semiconductor lasers in Gocator sensors. To maximize the lifespan of the sensor,
turn off the laser when not in use.
Avoid excessive modifications to files stored on the sensor
Settings for Gocator sensors are stored in flash memory inside the sensor. Flash memory has an
expected lifetime of 100,000 writes. To maximize lifetime, avoid frequent or unnecessary file save
operations.
Environment and Lighting
Avoid strong ambient light sources
The imager used in this product is highly sensitive to ambient light hence stray light may have adverse
effects on measurement. Do not operate this device near windows or lighting fixtures that could
influence measurement. If the unit must be installed in an environment with high ambient light levels, a
lighting shield or similar device may need to be installed to prevent light from affecting measurement.
Avoid installing sensors in hazardous environments
To ensure reliable operation and to prevent damage to Gocator sensors, avoid installing the sensor in
locations
lthat are humid, dusty, or poorly ventilated;
lwith a high temperature, such as places exposed to direct sunlight;
lwhere there are flammable or corrosive gases;
lwhere the unit may be directly subjected to harsh vibration or impact;

Gocator Line Profile Sensors: User Manual Safety and Maintenance • 20
lwhere water, oil, or chemicals may splash onto the unit;
lwhere static electricity is easily generated.
Ensure that ambient conditions are within specifications
Gocator sensors are suitable for operation between 0–50° C and 25–85% relative humidity (non-
condensing). Measurement error due to temperature is limited to 0.015% of full scale per degree C. The
storage temperature is -30–70° C.
The Master network controllers are similarly rated for operation between 0–50° C.
The sensor must be heat-sunk through the frame it is mounted to. When a sensor is properly heat
sunk, the difference between ambient temperature and the temperature reported in the sensor's
health channel is less
than 15° C.
Gocator sensors are high-accuracy devices, and the temperature of all of its components must
therefore be in equilibrium. When the sensor is powered up, a warm-up time of at least one hour is
required to reach a consistent spread of temperature in the sensor.