optris CTratio 1M Series User manual

Operator‘s Manual
optris®CTratio
1M/ 2M
Fiber Optics Ratio Thermometer

Optris GmbH
Ferdinand-Buisson-Str. 14
13127 Berlin
Germany
Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.optris.global

Table of Contents 3-
Table of Contents
Table of Contents .............................................................................................................................................3
1General Information.................................................................................................................................7
1.1 Description ....................................................................................................................................... 7
1.2 Warranty........................................................................................................................................... 9
1.3 Scope of Supply............................................................................................................................... 9
1.4 Maintenance................................................................................................................................... 10
1.5 Safety Note..................................................................................................................................... 10
1.6 Cautions ......................................................................................................................................... 10
1.7 Factory Default Settings................................................................................................................. 11
2Technical Data........................................................................................................................................13
2.1 General Specifications ................................................................................................................... 13
2.2 Electrical Specifications.................................................................................................................. 14
2.3 Measurement Specifications [1M models] ..................................................................................... 15

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2.4 Measurement Specifications [2M models] ..................................................................................... 16
2.5 Optics ............................................................................................................................................. 17
3Mechanical Installation..........................................................................................................................20
3.1 Accessories.................................................................................................................................... 23
3.2 Laser Sighting ................................................................................................................................ 25
4Electrical Installation.............................................................................................................................26
4.1 Cable Connections......................................................................................................................... 26
4.2 Ground Connection ........................................................................................................................ 28
5Outputs and Inputs................................................................................................................................29
5.1 Analog Output ................................................................................................................................ 29
5.2 I/O pins........................................................................................................................................... 30
5.3 Programming Interface................................................................................................................... 31
5.4 Relay Outputs................................................................................................................................. 32
5.5 Alarms ............................................................................................................................................ 33

Table of Contents 5-
6Operating ................................................................................................................................................34
6.1 Sensor Setup.................................................................................................................................. 34
7IRmobile app...........................................................................................................................................38
8Software Ratio Connect ........................................................................................................................40
8.1 Installation ...................................................................................................................................... 40
8.2 Communication Settings ................................................................................................................ 42
8.2.1 Serial Interface........................................................................................................................... 42
8.2.2 Protocol...................................................................................................................................... 42
9Basics of Infrared Thermometry...........................................................................................................43
9.1 The Ratio Principle......................................................................................................................... 44
10 Emissivity ...............................................................................................................................................46
10.1 Definition......................................................................................................................................... 46
10.2 Determination of unknown Emissivity ............................................................................................ 46
10.3 Characteristic Emissivity ................................................................................................................ 47

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10.4 Characteristic Slope Values........................................................................................................... 48
10.5 Determination of unknown Slope values........................................................................................ 48
10.6 Attenuation ..................................................................................................................................... 48
Appendix A –Emissivity Table Metals.........................................................................................................50
Appendix B –Emissivity Table Non Metals.................................................................................................52
Appendix C –Smart Averaging.....................................................................................................................53
Appendix D –Declaration of Conformity .....................................................................................................54

General Information 7-
1 General Information
1.1 Description
Thank you for choosing the optris® CTratio infrared thermometer.
The sensors of the optris CTratio series are noncontact infrared temperature sensors.
They calculate the surface temperature based on the emitted infrared energy of objects. The CTratio can
work in the 1-color-mode as well as in the ratio- or 2-color-mode [►9 Basics of Infrared Thermometry].
The optical sensing head of the CTratio is made of stainless steel (IP65/ NEMA-4 rating) and is connected
via a rugged fiber optics, which is protected by a stainless steel armour, with the sensor electronics (die
casting zinc box).
1-color-mode [1C]
The 1-color-mode is best for measuring the temperature of objects in areas where no sighting obstructions
(solid, gases or dust) exist. The measurement object must fill completely the measurement spot, if the 1-
color-mode is used.
2-color-mode [2C]
In this mode the object temperature will be determined from the ratio of the signal of two separate and
overlapping infrared bands. The 2-color-mode is best for measuring the temperature of objects which are
partially obscured by other objects, openings or viewing windows that reduce energy and by dirt, smoke or
steam in the atmosphere. Another benefit of the 2-color-mode is that the measurement object can be smaller
than the measurement spot, provided the background is cooler than the target [►9.1 The Ratio Principle].

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The CTratio sensing head is a sensitive optical system. Please use only the thread for
mechanical installation.
Avoid abrupt changes of the ambient temperature.
Avoid mechanical violence on the head –this may destroy the system (expiry of warranty).
If you have any problems or questions, please contact our service department.
Read the manual carefully before the initial start-up. The producer reserves the right to change
the herein described specifications in case of technical advance of the product.
► All accessories can be ordered according to the referred part numbers in brackets [ ].

General Information 9-
1.2 Warranty
Each single product passes through a quality process. Nevertheless, if failures occur please contact the
customer service at once. The warranty period covers 24 months starting on the delivery date. After the
warranty is expired the manufacturer guarantees additional 6 months warranty for all repaired or substituted
product components. Warranty does not apply to damages, which result from misuse or neglect. The
warranty also expires if you open the product. The manufacturer is not liable for consequential damage or in
case of a non-intended use of the product.
If a failure occurs during the warranty period the product will be replaced, calibrated or repaired without
further charges. The freight costs will be paid by the sender. The manufacturer reserves the right to
exchange components of the product instead of repairing it. If the failure results from misuse or neglect the
user has to pay for the repair. In that case you may ask for a cost estimate beforehand.
1.3 Scope of Supply
CTratio sensing head with fibre connection cable and electronic box
USB cable (Micro-USB, USB-C and USB-A cable included)
1 mounting nut
Mounting bracket, adjustable in one axis
Operator’s Manual

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1.4 Maintenance
Lens cleaning: Blow off loose particles using clean compressed air. The lens surface can be cleaned with a
soft, humid tissue (moistened with water) or a lens cleaner (e.g. Purosol or B+W Lens Cleaner).
Never use cleaning compounds which contain solvents (neither for the lens nor for the housing).
1.5 Safety Note
The CTratio is equipped with an integrated laser that serves to align the optics
with the target.
►3.2 Laser Sighting
1.6 Cautions
Avoid static electricity. The fiber optical cable has a minimum bending radius of 40 mm.
In case of problems or questions which may arise when you use the CTratio, please contact our service
department.
Read the manual carefully before the initial start-up. The producer reserves the right to change the herein
described specifications in case of technical advance of the product.