Optris CT XL 3M Operating Manual

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Infrared Sensor

CT XL LT/ 3M

®

Operators manual

Optris GmbH
Ferdinand-Buisson-Str. 14
D – 13127 Berlin
GERMANY

Tel.: [phone]
Fax: [phone]

E-mail: [e-mail]
Internet: www.optris.com

CE-Conformity

The product complies with the following standards:
EMC: EN 61326-1:2006

(Basic requirements)
EN 61326-2-3:2006
Safety Regulations: EN 61010-1:2001

The product accomplishes the requirements of the EMC Directive 2004/108/EG
and of the Low Voltage Directive 2006/95/EG. This product is in conformity with
Directive 2011/65/EU of the European Parliament and of the Council of 8 June
2011 on the restriction of the use of certain hazardous substances in electrical and
electronic equipment.

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. References to other chapters are marked as [► ...].

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.

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Content

Page Page
Description 3 Relay Outputs 31

Scope of Supply 3 Functional Inputs 32
Maintenance 3 Alarms 33
Cautions 4 Operating 34
Model Overview 4 Sensor Setup 34
Factory Default Settings 5 Error Messages 40
Technical Data 6 Software CompactConnect 41
General Specification 6 Installation 41
Electrical Specification 7 Communication Settings 42
Measurement Specification [LT model] 8 Basics of Infrared Thermometry 44
Measurement Specification [3M models] 9 Emissivity 45
Optical Charts 11 Definition 45

Mechanical Installation 20 Determination of unknown Emissivities 45
Accessories 22 Characteristic Emissivities 46

Air Purge Collar 22 Appendix A – Emissivity Table Metals 47
Mounting Brackets 23 Appendix B – Emissivity Table Non Metals 49
Rail Mount Adapter for Electronic box 24 Appendix C – Smart Averaging 50

Electrical Installation 25

Cable Connections 25
Ground Connection 28

Outputs and Inputs 30

Analog Outputs 30
Digital Interfaces 31

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PLEASE NOTE: Never use cleaning
compounds which contain solvents
(neither for the lens nor for the housing).

The CT XL sensing head is a sensitive optical system. Please use only the thread for mechanical
installation.
Avoid mechanical violence on the head – this may destroy the system (expiry of warranty).

Description

The sensors of the optris CT XL series are noncontact infrared temperature sensors.
They calculate the surface temperature based on the emitted infrared energy of objects [► Basics of
Infrared Thermometry]. The sensor housing of the CT XL head is made of stainless steel (IP65/ NEMA-4
rating) – the sensor electronics is placed in a separate box made of die casting zinc.

Scope of Supply

 CT XL sensing head with connection cable and electronic box
 Mounting nut
 Operators manual

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 water based
glass cleaner.

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Cautions

Avoid abrupt changes of the ambient temperature. In case of problems or questions which may arise when
you use the CT XL, please contact our service department.

Model Overview

The sensors of the CT XL series are available in the following basic versions:

Model Model codes Measurement range spectral typical applications
response

CT XL LT LT -50 to 975 °C 8-14 µm non-metallic surfaces
CT XL 3M 3ML 50 to 400 °C 2,3 µm metallic surfaces
3MH 100 to 600 °C 2,3 µm metallic surfaces
3MH1 150 to 1000 °C 2,3 µm metallic surfaces
3MH2 200 to 1500 °C 2,3 µm metallic surfaces
3MH3 250 to 1800 °C 2,3 µm metallic surfaces

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Smart Averaging means a
dynamic average adaptation at
high signal edges [activation via
software only].

[► Appendix C]

Factory Default Settings

The unit has the following presetting at time of delivery:

Signal output object temperature 0-5 V
Emissivity 0,970 [LT]
1,000 [3M]
Transmissivity 1,000
Averaging (AVG) 0,2 s [LT]
inactive [3M]
Smart Averaging inactive [LT], active [3M]
Peak hold inactive
Valley hold inactive

LT 3ML 3MH 3MH1 3MH2 3MH3

Lower limit temperature range [°C] 0 485 50 100 150 200 250
Upper limit temperature range [°C] 500 1050 400 600 1000 1500 1800
Lower alarm limit [°C] 30 100 250 350 550 600

(normally closed)

Upper alarm limit [°C] 100 300 500 600 1000 1400

(normally open)

Lower limit signal output 0 V
Upper limit signal output 5 V
Temperature unit °C
Ambient temperature compensation internal head temperature probe

(on LT output at OUT-AMB as 0-5 V signal)

Baud rate [kBaud] 115

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Technical Data

General Specifications

Sensing head Electronic box

Environmental rating IP65 (NEMA-4) IP65 (NEMA-4)
Ambient Temperature -20...85 °C -40...85 °C 1)
Storage temperature -40...85 °C -40...85 °C
Relative humidity 10...95%, non condensing 10...95%, non condensing

Material stainless steel die casting zinc
Dimensions 112 mm x 32 mm, M30x1 89 mm x 70 mm x 30 mm
Weight 120 g 420 g

Cable length 3 m (standard), 8 m, 15 m (8 and 15 m only available at LT)
Cable diameter 2,8 mm
Ambient temperature cable 180 °C max.

Vibration IEC 68-2-6: 3G, 11 – 200Hz, any axis
Shock IEC 68-2-27: 50G, 11ms, any axis

Software (optional) CompactConnect

1)

The functionality of the LCD display can be limited at ambient temperatures below 0 °C.

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Electrical Specifications

Power Supply 8–36 VDC
Current draw max. 100 mA

Outputs/ analog
Channel 1 selectable: 0/ 4–20 mA, 0–5/ 10 V, thermocouple (J or K) or alarm output
(Signal source: object temperature)

Channel 2 [LT only] Head temperature [-20...180 °C]
as 0–5 V or 0–10 V output or alarm output
(Signal source switchable to object temperature or electronic box temperature if
used as alarm output)

Alarm output Open collector output at Pin AL2 [24 V/ 50 mA]
Output impedances

mA max. loop resistance 500 Ω (at 8-36 VDC),
mV min. 100 KΩ load impedance
Thermocouple 20 Ω

Digital interfaces USB, RS232, RS485, CAN, Profibus DP, Ethernet (optional plug-in modules)
Relay outputs 2 x 60 VDC/ 42 VAC

, 0,4 A; optically isolated (optional plug-in module)

RMS

Functional inputs F1-F3; software programmable for the following functions:

- external emissivity adjustment,

- ambient temperature compensation,

- trigger (reset of hold functions)

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Measurement Specifications [LT model]

LT
Temperature range (scalable) -50...975 °C
Spectral range 8...14 µm

Optical resolution 75:1
System accuracy

Repeatability 1) ±0,5°C or ±0,5% 3)
Temperature resolution (NETD) 0,1 °C

1) 2)

±1°C or ±1% 3)

3) 4)

Response time (90 % signal) 120 ms
Warm-up time 10 min

Emissivity/ Gain 0,100...1,100 (adjustable via programming keys or software)
Transmissivity 0,100...1,000 (adjustable via programming keys or software)
Signal processing Average, peak hold, valley hold (adjustable via programming keys or
software)

1)

at ambient temperature 235 °C; whichever is greater

2)

Accuracy for thermocouple output: ±2,5°C or ±1%

3)

at object temperatures >0 °C, ε = 1

4)

at time constant 100ms and an object temperature of 25 °C

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Measurement Specifications [3M models]

3ML 3MH
Temperature range (scalable) 50...375 °C 1) 100...600 °C 1)
Spectral range 2,3 µm 2,3 µm

Optical resolution 60:1 100:1
System accuracy

Repeatability 2) ±(0,1 % of reading +1 °C)
Temperature resolution 0,1 °C
Response time (90 % signal) 1 ms

2) 3)

±(0,3 % of reading +2 °C)

4)

0,1 °C

5)

1 ms

4)

4)

4)

5)

Emissivity/ Gain 0,100...1,100 (adjustable via programming keys or software)
Transmissivity 0,100...1,000 (adjustable via programming keys or software)
Signal processing Average, Peak hold, Valley hold, (adjustable via programming keys or
software)

1)

TObject > THead+25 °C

2)

at ambient temperature 235 °C

3)

Accuracy for thermocouple output: ±2,5°C or ±1%

4)

 = 1/ Response time 1s

5)

with dynamic adaptation at low signal levels

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Measurement Specifications [3M models]

3MH1 3MH2 3MH3
Temperature range (scalable) 150...1000 °C 200...1500 °C 250...1800 °C
Spectral range 2,3 µm 2,3 µm 2,3 µm

Optical resolution 300:1 300:1 300:1
System accuracy

Repeatability 2) ±(0,1 % of reading +1 °C)
Temperature resolution 0,1 °C
Response time (90 % signal) 1 ms

2) 3)

±(0,3 % of reading +2 °C)

4)

0,1 °C

6)

1 ms

4)

6)

4)

4)

0,1 °C
1 ms

5)

6)

Emissivity/ Gain 0,100...1,100 (adjustable via programming keys or software)
Transmissivity 0,100...1,000 (adjustable via programming keys or software)
Signal processing Average, Peak hold, Valley hold, (adjustable via programming keys or
software)

1)

TObject > THead+25 °C

2)

at ambient temperature 235 °C

3)

Accuracy for thermocouple output: ±2,5°C or ±1%

4)

 = 1/ Response time 1s

5)

at object temperatures > 300 °C

6)

with dynamic adaptation at low signal levels

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The size of the measuring object and the optical resolution of the infrared thermometer determine
the maximum distance between sensing head and measuring object.
In order to prevent measuring errors the object should fill out the field of view of the optics
completely.
Consequently, the spot should at all times have at least the same size like the object or should be
smaller than that.

LT

Optics: SF

D:S (focus distance) = 75:1/ 16mm@1200mm
D:S (far field) = 34:1

Optical Charts

The following optical charts show the diameter of the measuring spot in dependence on the distance
between measuring object and sensing head. The spot size refers to 90 % of the radiation energy.
The distance is always measured from the front edge of the sensing head.

D = Distance from front of the sensing head to the object
S = Spot size
The D:S ratio is valid for the focus point.

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LT

Optics: CF1

D:S (focus distance) = 75:1/ 0,9mm@70mm
D:S (far field) = 3,5:1

LT

Optics: CF2

D:S (focus distance) = 75:1/ 1,9mm@150mm
D:S (far field) = 7:1

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LT

Optics: CF3

D:S (focus distance) = 75:1/ 2,75mm@200mm
D:S (far field) = 9:1

LT

Optics: CF4

D:S (focus distance) = 75:1/ 5,9mm@450mm
D:S (far field) = 18:1

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3MH Optics: SF

D:S (focus distance) = 100:1
11mm@ 1100mm
D:S (far field) = 38:1

3ML Optics: SF

D:S (focus distance) = 60:1
18,3mm@ 1100mm
D:S (far field) = 30:1

3MH Optics: CF1

D:S (focus distance) = 100:1
0,85mm@ 85mm
D:S (far field) = 3:1

3ML Optics: CF1

D:S (focus distance) = 60:1
1,4mm@ 85mm
D:S (far field) = 3:1

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