MICRO-EPSILON optoNCDT 1900 Series User manual

ILD1900-10
ILD1900-25
ILD1900-50
Operating Instructions
optoNCDT 1900

MICRO-EPSILON
MESSTECHNIK
GmbH & Co. KG
Koenigbacher Str. 15
94496 Ortenburg / Germany
Tel. [phone] / 168-0
Fax [phone] / 168-90
e-mail [email protected]
www.micro-epsilon.com
Intelligent laser optical displacement measurement

optoNCDT 1900
Contents
1. Safety ........................................................................................................................................ 9
1.1 Symbols Used ................................................................................................................................................. 9
1.2 Warnings.......................................................................................................................................................... 9
1.3 Notes on CE Marking .................................................................................................................................... 10
1.4 Intended Use ................................................................................................................................................. 11
1.5 Proper Environment....................................................................................................................................... 11
2. Laser Safety............................................................................................................................ 12
3. Functional Principle, Technical Data ..................................................................................... 14
3.1 Short Description........................................................................................................................................... 14
3.2 Advanced Surface Compensation ................................................................................................................ 15
3.3 Technical Data ............................................................................................................................................... 16
4. Delivery ................................................................................................................................... 18
4.1 Unpacking, Included in Delivery.................................................................................................................... 18
4.2 Storage .......................................................................................................................................................... 18
5. Installation .............................................................................................................................. 19
5.1 Instructions for Installation ............................................................................................................................ 19
5.1.1 Reflection Factor of the Target Surface ....................................................................................... 19
5.1.2 Error Influences ........................................................................................................................... 20
5.1.2.1 Light from other Sources ......................................................................................... 20
5.1.2.2 Color Differences ..................................................................................................... 20
5.1.2.3 Temperature Influences ........................................................................................... 20
5.1.2.4 Mechanical Vibration ............................................................................................... 20
5.1.2.5 Movement Blurs ....................................................................................................... 20
5.1.2.6 Surface Roughness .................................................................................................. 21
5.1.2.7 Angle Influences ....................................................................................................... 22
5.1.3 Optimizing the Measuring Accuracy ........................................................................................... 23
5.2 Mounting, Dimensions................................................................................................................................... 24
5.2.1 General ......................................................................................................................................... 24
5.2.2 Attachment ................................................................................................................................... 24
5.3 Indicator Elements at Sensor ........................................................................................................................ 26

optoNCDT 1900
5.4 Electrical Connections................................................................................................................................... 27
5.4.1 Connection Possibilities ............................................................................................................... 27
5.4.2 Pin Assignment............................................................................................................................. 29
5.4.3 Supply voltage.............................................................................................................................. 30
5.4.4 Laser On ....................................................................................................................................... 31
5.4.5 Analog Output .............................................................................................................................. 32
5.4.6 Multifunction Input........................................................................................................................ 33
5.4.7 RS422 Connection with USB Converter IF2001/USB.................................................................. 33
5.4.8 Digital Output................................................................................................................................ 34
5.4.9 Connector and Sensor Cable....................................................................................................... 35
6. Operation ................................................................................................................................ 36
6.1 Getting Ready for Operation ......................................................................................................................... 36
6.2 Operation via Web Interface.......................................................................................................................... 37
6.2.1 Preconditions................................................................................................................................ 37
6.2.2 Access via Web Interface ............................................................................................................. 38
6.2.3 Measurement Configuration......................................................................................................... 40
6.2.4 Measurement Presentation via Web Browser.............................................................................. 41
6.2.5 Video Signal via Web Browser ..................................................................................................... 43
6.3 Parametrization via ASCII Commands .......................................................................................................... 45
6.4 Timing, Measurement Value Flux .................................................................................................................. 45
6.5 Menu Structure, Operation via Membrane Keys........................................................................................... 46
7. Setting Sensor Parameters.................................................................................................... 48
7.1 Preliminary Remarks about the Setting Possibilities..................................................................................... 48
7.2 Overview Parameter....................................................................................................................................... 48
7.3 Inputs ............................................................................................................................................................. 49
7.4 Synchronization ............................................................................................................................................. 50
7.4.1 Synchronization via Sync +/- Connections ................................................................................. 50
7.4.2 Synchronization via Multi-Function Input..................................................................................... 52
7.5 Data Recording.............................................................................................................................................. 53
7.5.1 Preliminary Remark ...................................................................................................................... 53
7.5.2 Measurement Configuration......................................................................................................... 53
7.5.3 Measuring Rate ............................................................................................................................ 53
7.5.4 Triggering...................................................................................................................................... 54
7.5.4.1 General...................................................................................................................... 54
7.5.4.2 Triggering Data Recording ....................................................................................... 56
7.5.4.3 Triggering Data Output ............................................................................................. 56

optoNCDT 1900
7.5.5 Masking the Evaluation Range, ROI ............................................................................................ 57
7.5.6 Exposure Mode ............................................................................................................................ 58
7.5.7 Peak Selection.............................................................................................................................. 59
7.5.8 Error Processing........................................................................................................................... 59
7.6 Signal Processing.......................................................................................................................................... 60
7.6.1 Preliminary Remark ...................................................................................................................... 60
7.6.2 Averaging...................................................................................................................................... 60
7.6.2.1 General...................................................................................................................... 60
7.6.2.2 Moving average ........................................................................................................ 61
7.6.2.3 Recursive average .................................................................................................... 62
7.6.2.4 Median ...................................................................................................................... 62
7.6.3 Output Trigger .............................................................................................................................. 63
7.6.4 Data Reduction, Output Data Rate............................................................................................... 63
7.7 Outputs .......................................................................................................................................................... 64
7.7.1 Overview ....................................................................................................................................... 64
7.7.2 Digital Output, RS422................................................................................................................... 66
7.7.2.1 Values, Ranges ......................................................................................................... 66
7.7.2.2 Behavior of the Digital Output................................................................................... 68
7.7.3 Analog Output .............................................................................................................................. 70
7.7.3.1 Output Scaling .......................................................................................................... 70
7.7.3.2 Output Scaling with the Select Button...................................................................... 71
7.7.3.3 Output Scaling via Hardware Input .......................................................................... 72
7.7.3.4 Calculation of the Measurement Value at the Current Output ................................. 73
7.7.3.5 Calculation of the measurement value from the voltage output .............................. 74
7.7.4 Switching Outputs ........................................................................................................................ 75
7.7.5 Data Output .................................................................................................................................. 76
7.8 System Settings............................................................................................................................................. 77
7.8.1 General ......................................................................................................................................... 77
7.8.2 Unit, Language ............................................................................................................................. 77
7.8.3 Key Lock ....................................................................................................................................... 77
7.8.4 Load and Save ............................................................................................................................. 78
7.8.5 Import, Export............................................................................................................................... 80
7.8.6 Access Authorization.................................................................................................................... 81
7.8.7 Reset Sensor ................................................................................................................................ 82
8. Digital Interfaces RS422 ........................................................................................................ 83
8.1 Preliminary Remarks...................................................................................................................................... 83
8.2 Measurement Data Format............................................................................................................................ 83
8.3 Conversion of the Binary Data Format .......................................................................................................... 84

optoNCDT 1900
9. Cleaning.................................................................................................................................. 85
10. Software Support with MEDAQLib ........................................................................................ 85
11. Liability for Material Defects.................................................................................................. 86
12. Decommissioning, Disposal.................................................................................................. 86
13. Service, Repair ....................................................................................................................... 86
Appendix
A 1 Optional Accessories..................................................................................................................................... 87
A 2 Factory Setting............................................................................................................................................... 89
A 3 ASCII Communication with Sensor ............................................................................................................... 90
A 3.1 General .......................................................................................................................................................... 90
A 3.2 Overview Commands .................................................................................................................................... 92
A 3.2.1 General Commands ..................................................................................................................... 95
A 3.2.1.1 HELP ......................................................................................................................... 95
A 3.2.1.2 GETINFO, Sensor information ................................................................................. 96
A 3.2.1.3 LANGUAGE Web interface ....................................................................................... 96
A 3.2.1.4 RESET, boot sensor ................................................................................................. 97
A 3.2.1.5 RESETCNT, Reset counter........................................................................................ 97
A 3.2.1.6 ECHO, Switching the Command Reply, ASCII Interface.......................................... 97
A 3.2.1.7 PRINT, Sensor settings ............................................................................................. 98
A 3.2.1.8 SYNC......................................................................................................................... 99
A 3.2.1.9 TERMINATION .......................................................................................................... 99
A 3.2.2 User Level................................................................................................................................... 100
A 3.2.2.1 LOGIN, Change of the User Level .......................................................................... 100
A 3.2.2.2 LOGOUT, Change into User Level .......................................................................... 100
A 3.2.2.3 GETUSERLEVEL, User Level Request ................................................................... 100
A 3.2.2.4 STDUSER, Set Standard User................................................................................ 100
A 3.2.2.5 PASSWD, Change Password.................................................................................. 100
A 3.2.3 Triggering.................................................................................................................................... 101
A 3.2.3.1 TRIGGERLEVEL, Active level triggering................................................................. 101
A 3.2.3.2 TRIGGERMODE...................................................................................................... 101
A 3.2.3.3 TRIGGERSOURCE, Trigger source ........................................................................ 101
A 3.2.3.4 TRIGGERAT, Effect of the Trigger Input.................................................................. 101
A 3.2.3.5 MFILEVEL, Input Level Multi-Function Input .......................................................... 101

optoNCDT 1900
A 3.2.3.6 TRIGGERCOUNT, Number of Output Measurement Values.................................. 102
A 3.2.3.7 TRIGGERSW, Software Trigger Pulse..................................................................... 102
A 3.2.4 Interfaces .................................................................................................................................... 103
A 3.2.4.1 BAUDRATE, RS422 ................................................................................................ 103
A 3.2.4.2 ERROROUT1/2, Activate Switching Output............................................................ 103
A 3.2.4.3 ERRORLEVELOUT1/2, Output Level Switching Output......................................... 103
A 3.2.4.4 ERRORLIMITCOMPARETO1/2................................................................................ 103
A 3.2.4.5 ERRORLIMITVALUES1/2 ........................................................................................ 104
A 3.2.4.6 ERRORHYSTERESIS .............................................................................................. 104
A 3.2.4.7 ERROROUTHOLD .................................................................................................. 104
A 3.2.5 Handling of Setups..................................................................................................................... 105
A 3.2.5.1 IMPORT................................................................................................................... 105
A 3.2.5.2 EXPORT .................................................................................................................. 105
A 3.2.5.3 MEASSETTINGS, Load / Save Measurement Settings.......................................... 106
A 3.2.5.4 BASICSETTINGS, Load / Save Device Settings .................................................... 106
A 3.2.5.5 SETDEFAULT, Factory Settings .............................................................................. 106
A 3.2.6 Analog Output ............................................................................................................................ 107
A 3.2.6.1 ANALOGRANGE ..................................................................................................... 107
A 3.2.6.2 ANALOGSCALEMODE, Scaling the Analog Output .............................................. 107
A 3.2.6.3 ANALOGSCALERANGE, Scaling Limits with Two-Point Scaling ........................... 107
A 3.2.6.4 ANALOGSCALESOURCE ....................................................................................... 107
A 3.2.7 Key Function............................................................................................................................... 108
A 3.2.7.1 KEYLOCK, Set Key lock.......................................................................................... 108
A 3.2.8 Measurement.............................................................................................................................. 108
A 3.2.8.1 TARGETMODE, Measurement Task ....................................................................... 108
A 3.2.8.2 MEASPEAK, Choice of the Peak in the Video Signal............................................. 108
A 3.2.8.3 MEASRATE, Measuring rate ................................................................................... 108
A 3.2.8.4 SHUTTER, Exposure Time ..................................................................................... 109
A 3.2.8.5 SHUTTERMODE ..................................................................................................... 109
A 3.2.8.6 EXPOSUREMODE .................................................................................................. 109
A 3.2.8.7 LASERPOW, Laser Power....................................................................................... 109
A 3.2.8.8 ROI, Video Signal, Masking the Evaluation Range ................................................ 109
A 3.2.8.9 COMP, Averaged Measurements............................................................................ 110
A 3.2.8.10 List of Possible Signals for Mastering..................................................................... 110
A 3.2.8.11 MASTER.................................................................................................................. 111
A 3.2.8.12 MASTERSIGNAL..................................................................................................... 111
A 3.2.8.13 MASTERSOURCE................................................................................................... 111

optoNCDT 1900
A 3.2.9 Data output................................................................................................................................. 112
A 3.2.9.1 OUTPUT, Selection of Measurement Value Output................................................ 112
A 3.2.9.2 OUTREDUCEDEVICE, Output Reduction of Measurement Value Output............. 112
A 3.2.9.3 OUTREDUCECOUNT, Data Output Rate................................................................ 112
A 3.2.9.4 OUTHOLD, Error Processing.................................................................................. 112
A 3.2.9.5 GETOUTINFO_RS422, Query Selected Data......................................................... 113
A 3.2.9.6 List of Possible RS422 Signals ............................................................................... 113
A 3.2.9.7 OUT_RS422 ............................................................................................................ 113
A 3.3 Example Command Sequence During Selection of Measurement Value.................................................. 114
A 3.4 Error Messages............................................................................................................................................ 114
A 4 Control Menu ............................................................................................................................................... 117
A 4.1 Tab Home..................................................................................................................................................... 117
A 4.2 Tab Settings ................................................................................................................................................. 117
A 4.2.1 Inputs.......................................................................................................................................... 117
A 4.2.2 Data Recording........................................................................................................................... 118
A 4.2.3 Signal Processing....................................................................................................................... 120
A 4.2.4 Outputs ....................................................................................................................................... 121
A 4.2.5 System Settings.......................................................................................................................... 123

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Safety
optoNCDT 1900
1. Safety
The handling of the sensor assumes knowledge of the operating instructions.
1.1 Symbols Used
The following symbols are used in this operating instructions:
Indicates a hazardous situation which, if not avoided, may result in minor or moderate injury.
Indicates a situation that may result in property damage if not avoided.
Indicates a user action.
iIndicates a tip for users.
Measure Indicates hardware or a software button/menu.
1.2 Warnings
Avoid unnecessary laser radiation to be exposed to the human body.
Switch off the sensor for cleaning and maintenance.
Switch off the sensor for system maintenance and repair if the sensor is integrated into a system.
Caution - use of controls or adjustments or performance of procedures other than those specified may cause harm.
Connect the power supply and the display-/output device in accordance with the safety regulations for electrical
equipment.
> Risk of injury
> Damage to or destruction of the sensor

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Safety
optoNCDT 1900
Avoid shocks and impacts to the sensor.
> Damage to or destruction of the sensor
Mount the sensor only to the existing holes on a flat surface. Clamps of any kind are not permitted
> Damage to or destruction of the sensor
The power supply may not exceed the specified limits.
> Damage to or destruction of the sensor
Protect the sensor cable against damage. Attach the cable load-free, hold the cable after appr. 25 cm and hold
the pigtail on the connector e.g. zip tie.
> Destruction of the sensor
> Failure of the measuring device
Avoid continuous exposure to fluids on the sensor.
> Damage to or destruction of the sensor
Avoid exposure to aggressive materials (washing agent, penetrating liquids or similar) on the sensor.
> Damage to or destruction of the sensor
1.3 Notes on CE Marking
The following apply to the optoNCDT 1900:
- EU directive 2014/30/EU
- EU directive 2011/65/EU
Products which carry the CE mark satisfy the requirements of the EU directives cited and the relevant applicable harmonized Euro-
pean standards (EN). The measuring system is designed for use in industrial environments.
The EU Declaration of Conformity is available to the responsible authorities according to EU Directive, article 10.

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Safety
optoNCDT 1900
1.4 Intended Use
- The optoNCDT 1900 system is designed for use in industrial and laboratory applications.
- It is used
for measuring displacement, distance, position and thickness
for in-process quality control and dimensional testing
- The system must only be operated within the limits specified in the technical data, see Chap. 3.3.
- The sensor must be used in such a way that no persons are endangered or machines and other material goods are damaged in
the event of malfunction or total failure of the sensor.
- Take additional precautions for safety and damage prevention in case of safety-related applications.
1.5 Proper Environment
- Protection class: IP67
Lenses are excluded from protection class. Contamination of the lenses leads to impairment or failure of the function.
- Temperature range
Operation: 0 °C ... 50 °C (+32 ... +104 °F)
Storage: -20 °C ... 70 °C (-4 ... +158 °F)
- Humidity: 5 - 95 % (non-condensing)
- Ambient pressure: Atmospheric pressure
iThe protection class is limited to water, no penetrating liquids or similar!

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Laser Safety
optoNCDT 1900
2. Laser Safety
The optoNCDT 1900 sensors operate with a semiconductor laser with a wavelength of 670 nm
(visible/red). The sensors fall within Laser Class 2. The laser is operated on a pulsed mode, the maximum optical power is ≤ 1 mW.
The pulse frequency depends on the adjusted measuring rate (0.25 ... 10 kHz). The pulse duration of the peaks is regulated depend-
ing on the measuring rate and reflectivity of the target and can be 4 ... 3995 µs.
Laser radiation. Close your eyes or immediately turn away if the laser beam hits the eye. Irritation or injury of the
eyes possible.
iObserve the laser protection regulations.
Although the laser output is low, directly looking into the laser beam must be avoided. Close your eyes or immediately turn away if the
laser beam hits the eye. Lasers of Class 2 are not subject to notification and a laser protection officer is not required.
The following warning labels (English / German) are attached to the sensor cable.
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
IEC 60825-1: 2014
P 1mW; =670nm
COMPLIES WITH 21 CFR 1040.10 AND 1040.11
EXCEPT FOR CONFORMANCE WITH IEC 60825-1
ED. 3., AS DESCRIBED IN
LASER NOTICE NO. 56, DATED MAY 8, 2019.
LASERSTRAHLUNG
NICHT IN DEN STRAHL BLICKEN
LASER KLASSE 2
nach DIN EN 60825-1: 2015-07
P 1mW; =670nm
Fig. 1 Laser labels on the sensor cable
Fig. 2 Laser warning sign on the sensor housing

Page 13
Laser Safety
optoNCDT 1900
During operation of the sensor, the pertinent regulations according to IEC 60825-1 on „Safety of laser products“ must be fully ob-
served at all times. The sensor complies with all applicable laws for the manufacturer of laser devices.
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
IEC 60825-1: 2014
P 1mW; =670nm
COMPLIES WITH 21 CFR 1040.10 AND 1040.11
EXCEPT FOR CONFORMANCE WITH IEC 60825-1
ED . 3., AS DESCRIBED IN
LASER NOTICE NO . 56, D ATED MA Y 8, 2019.
Fig. 3 Sensor cable and sensor with laser sign, ILD 1900
iIf both warning labels are covered over when the unit is installed the user must ensure that supplementary labels are applied.
Laser operation is indicated by LED, see Chap. 5.3.
The housing of the optical sensors may only be opened by the manufacturer, see Chap. 11.
For repair and service purposes, the sensors must always be sent to the manufacturer.

Page 14
Functional Principle, Technical Data
optoNCDT 1900
3. Functional Principle, Technical Data
3.1 Short Description
The optoNCDT 1900 uses the principle of optical triangulation, that is, a visible, modulated point of light is projected onto the target
surface.
The diffuse part of the reflection of this point of light is displayed depending on distance on a position-resolving element (CMOS) by
an receiver optic which is arranged to the optical axis of the laser beam in a defined angle.
A signal processor in the sensor calculates the distance of the point of light on the measuring object to the sensor by means of the
output signal of the CMOS elements. The distance value is linearized and output by means of the analog or RS422 interface.
Current Voltage Digital value 1
3 mA 262077
4 mA (SMR) 98232
12 mA (MMR) 131000
20 mA (EMR) 163768
3 mA
5.2 V / 10.2 V
0 V
2.5 V / 5 V
5 V / 10 V
5.2 V / 10.2 V 262078
MR SMR
MR = Measuring range
SMR = Start of measuring range
MMR = Mid of measuring range
EMR = End of measuring range
Fig. 4 Definition of terms
1) For distance values without zero setting resp. mastering only.

Page 15
Functional Principle, Technical Data
optoNCDT 1900
3.2 Advanced Surface Compensation
The optoNCDT 1900 is equipped with an intelligent surface control feature. New algorithms generate stable measurement results
even on demanding surfaces where changing reflections occur. Furthermore, these new algorithms compensate for ambient light up
to 50,000 lux. Therefore, this is the sensor with the highest resistance to ambient light in its class which can even be used in strongly
illuminated environments.

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Functional Principle, Technical Data
optoNCDT 1900
3.3 Technical Data
Model ILD1900- 10 25 50
Measuring range 10 mm 25 mm 50 mm
Start of measuring range 20 mm 25 mm 40 mm
Midrange 25 mm 37.5 mm 65 mm
End of measuring range 30 mm 50 mm 90 mm
Measuring rate 1 Continuously adjustable between 0.25 ... 10 kHz
adjustable in 7 steps: 10 kHz / 8 kHz / 4 kHz / 2 kHz / 1.0 kHz / 500 Hz / 250 Hz
Linearity 2≤ ±2 µm ≤ ±5 µm ≤ ±10 µm
≤± 0.02 % FSO
Repeatability 3< 0.4 µm < 0.8 µm < 1.6 µm
Temperature stability 4±0.005 % FSO/K
Spot diameter
(± 10 %) 5
SMR 115 x 150 µm 200 x 265 µm 220 x 300 µm
MMR 60 x 65 µm 70 x 75 µm 95 x 110 µm
EMR 120 x 140 µm 220 x 260 µm 260 x 300 µm
smallest
Ø
60 x 65 µm
bei 25 mm
65 x 70 µm
bei 35 mm
85 x 90 µm
bei 55 mm
Light source Semiconductor laser < 1 mW, 670 nm (red)
Laser safety class Class 2 according to IEC 60825-1 : 2014
Permissible ambient light 50,000 lx
Power supply 11 ... 30 V DC, 24 V / P < 3 W
Control inputs 1 x HTL/TTL Multifunction input Trigger in / slave in / zero setting / mastering / teach
1x RS422 synchronization input (trigger in, sync in, master/slave, master/slave alternating)
Digital interface RS422 / 18 bit, PROFINET 6, EtherNet/IP 6
Analog output 4 ... 20 mA / 0 ... 5 V / 0 ... 10 V (16 bit; freely scalable within the measuring range)

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Functional Principle, Technical Data
optoNCDT 1900
Model ILD1900- 10 25 50
Digital output 2 x switching output (error & limit value): npn, pnp, push pull
Synchronization possible for simultaneous or alternating measurements
Connection
integrated cable with 3 m length, open ends, min. bending radius 30 mm fixed mounted;
or 0.3 m pigtail with 17-pol. M12 connector
optional extension on 3 m / 6 m / 9 m / 15 m possible (see accessories for suitable cables)
Temperature
range
operation 0 ... +50 °C (+32 ... +122 °F)
storage -20 ... +70 °C (-4 °F ... +158 °F)
Shock (DIN-EN 60068-2-27) 15 g / 6 ms
Vibration (DIN-EN 60068-2-6) 20 g / 20 ... 500 Hz
Protection class
(DIN-EN 60529) IP67
Material Aluminium housing
Weight appr. 185 g (with pigtail), appr. 300 g (with cable)
Control and Display
Elements
Select & function buttons: interface selection, mastering (zero), teach, presets,
quality slider, frequency selection, factory settings
Web interface for setup 7: application-specific presets, peak selection, video signal,
freely selectable averaging possibilities, data reduction, setup management
2 x color LED for power / state
FSO = Full Scale Output, SMR = Start of measuring range, MMR = Mid of measuring range, EMR = End of measuring range
The specified data apply to a white, diffuse reflecting surface (Micro-Epsilon reference ceramic for ILD sensors)
1) Factory setting: 4 kHz measuring rate, Median 9; to change the factory setting requires an IF2001/USB converter (see accessories)
2) Based on digital output
3) Characteristic of measurements with 4 kHz and Median 9
4) Based on digital output in midrange
5) Spot diameter determined for punctual laser with Gauß fitting (full 1/e² width)
6) Connection with interfaces (see accessories)
7) Connection to PC via IF2001/USB (see accessories)

Page 18
Delivery
optoNCDT 1900
4. Delivery
4.1 Unpacking, Included in Delivery
- 1 Sensor ILD1900
- 1 Assembly instruction
- 1 Calibration protocol
- Accessories (2 pieces screw M3x40 and 2 pieces centering elements)
Carefully remove the components of the measuring system from the packaging and ensure that the goods are forwarded in such
a way that no damage can occur.
Check the delivery for completeness and shipping damage immediately after unpacking.
If there is damage or parts are missing, immediately contact the manufacturer or supplier.
Optional accessories are available in the appendix, see Chap. A 1.
4.2 Storage
Storage temperature: -20 ... +70 °C (-4 °F ... +158 °F)
Humidity: 5 - 95 % (non-condensing)

Page 19
Installation
optoNCDT 1900
5. Installation
5.1 Instructions for Installation
5.1.1 Reflection Factor of the Target Surface
In principle the sensor evaluates the diffuse part of the reflected laser light.
Laser beam
Ideal diffuse reflection Real reflectionDirect mirror reflection
Laser beam Laser beam

2
Fig. 5 Reflection factor of the target surface
A statement concerning a minimum reflectance is difficult to make because even a small diffuse fraction can be evaluated from highly
reflecting surfaces. This is done by determining the intensity of the diffuse reflection from the CMOS signal in real time and subse-
quent compensation, see Chap. 3.2. Dark or shiny objects being measured, e.g. black rubber, may require longer exposure times.
The maximum exposure time is dependent on the measuring rate and can only be increased by reducing the sensor’s measuring rate.

Page 20
Installation
optoNCDT 1900
5.1.2 Error Influences
5.1.2.1 Light from other Sources
Thanks to their integrated optical interference filters the optoNCDT 1900 sensors offer outstanding performance in suppressing light
from other sources. However, this does not preclude the possibility of interference from other light sources if the objects being mea-
sured are shiny and if lower measuring rates are selected. Should this be the case it is recommended to use suitable shields to screen
the other light sources or switch on the background suppression function. This applies in particular to measurement work performed
in close proximity to welding equipment.
5.1.2.2 Color Differences
Because of intensity compensation, color difference of targets affect the measuring result only slightly. However, such color differ-
ences are often combined with different penetration depths of the laser light into the material. Different penetration depths then result
in apparent changes of the measuring spot size. Therefore color differences in combination with changes of penetration depth may
lead to measuring errors.
5.1.2.3 Temperature Influences
When the sensor is commissioned a warm-up time of at least 20 minutes is required to achieve uniform heat distribution in the sensor.
If measurement is performed in the micron accuracy range, the effect of temperature fluctuations on the sensor holder must be con-
sidered. Due to the damping effect of the heat capacity of the sensor, sudden temperature changes are only measured with delay.
5.1.2.4 Mechanical Vibration
If the sensor is to be used for resolutions in the µm to sub-µm range, special care must be taken to ensure stable and vibration-free
mounting of sensor and target.
5.1.2.5 Movement Blurs
If the objects being measured are fast moving and the measuring rate is low, it is possible that movement blurs may result. Always
select a high measuring rate for high-speed operations, therefore, in order to prevent errors.