optris CT User manual

Operators manual
optris®CT
Infrared-thermometer
LT/ LTF/ LTH/ 1M/ 2M/ 3M/ G5/ P3/ P7

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

-Table of Contents 3-
Table of Contents
Table of Contents .............................................................................................................................................3
1General Information.................................................................................................................................7
1.1 Description ....................................................................................................................................... 7
1.2 Warranty........................................................................................................................................... 8
1.3 Scope of Supply............................................................................................................................... 8
1.4 Maintenance..................................................................................................................................... 9
1.5 Model Overview.............................................................................................................................. 10
1.6 Factory Default Settings................................................................................................................. 12
2Technical Data........................................................................................................................................14
2.1 General Specifications ................................................................................................................... 14
2.2 Electrical Specifications.................................................................................................................. 15
2.3 Measurement Specifications [LT models]...................................................................................... 16
2.4 Measurement Specifications [CTfast/ CThot]................................................................................. 17

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2.5 Measurement Specifications [1M/ 2M/ 3M models] ....................................................................... 19
2.6 Measurement Specifications [G5/ P7 models]............................................................................... 22
2.7 Optical Charts................................................................................................................................. 23
2.8 CF Lens and Protective Window.................................................................................................... 34
3Mechanical Installation..........................................................................................................................38
3.1 Mounting Accessories .................................................................................................................... 41
3.2 Air Purge Collars ............................................................................................................................ 42
3.3 Further Accessories ....................................................................................................................... 44
4Electrical Installation.............................................................................................................................50
4.1 Cable Connections......................................................................................................................... 50
4.2 Ground Connection........................................................................................................................ 53
4.2.1 1M, 2M, 3M models ................................................................................................................... 53
4.2.2 LT, LTF, LTH, G5, P3, P7 models ............................................................................................. 54
4.3 Exchange of the Sensing Head...................................................................................................... 55

-Table of Contents 5-
5Outputs and Inputs................................................................................................................................57
5.1 Analog Outputs............................................................................................................................... 57
5.2 Digital Interfaces............................................................................................................................. 58
5.3 Relay Outputs................................................................................................................................. 58
5.4 Functional Inputs............................................................................................................................ 59
5.5 Alarms ............................................................................................................................................ 60
6Operating ................................................................................................................................................61
6.1 Sensor Setup.................................................................................................................................. 61
6.2 Error messages.............................................................................................................................. 67
7Software CompactConnect...................................................................................................................68
7.1 Installation ...................................................................................................................................... 68
7.2 Communication Settings ................................................................................................................ 69
8Basics of Infrared Thermometry...........................................................................................................72
9Emissivity ...............................................................................................................................................73

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9.1 Definition......................................................................................................................................... 73
9.2 Determination of unknown Emissivity ............................................................................................ 73
9.3 Characteristic Emissivity ................................................................................................................ 74
Appendix A –Table of Emissivity for metals...............................................................................................75
Appendix B –Table of Emissivity for non-metals.......................................................................................77
Appendix C –Smart Averaging.....................................................................................................................78
Appendix D –Declaration of Conformity .....................................................................................................79

-General Information 7-
1 General Information
1.1 Description
Thank you for choosing the optris® CT infrared thermometer.
The sensors of the optris CT series are noncontact infrared temperature sensors.
They calculate the surface temperature based on the emitted infrared energy of objects [►8 Basics of
Infrared Thermometry]. The sensor housing of the CT head is made of stainless steel (IP65/ NEMA-4
rating) –the sensor electronics is placed in a separate box made of die casting zinc.
The CT 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 [ ].

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

-General Information 9-
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 water based glass cleaner.
Never use cleaning compounds which contain solvents (neither for the lens nor for the housing).

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1.5 Model Overview
The sensors of the CT series are available in the following basic versions:
Model
Model codes
Measurement
range
Spectral
response
Typical applications
CT LT
LT02
-50 to 600 °C
8-14 µm
non-metallic surfaces
LT15
LT22
-50 to 975 °C
CT fast
LT15F
-50 to 975 °C
8-14 µm
fast processes
LT25F
CT hot
LT02H
-40 to 975 °C
8-14 µm
high ambient temperatures (up to 250 °C)
LT10H
CT1M
1ML
485 to 1050 °C
1,0 µm
metals and ceramic surfaces
1MH
650 to 1800 °C
1MH1
800 to 2200 °C
CT 2M
2ML
250 to 800 °C
1,6 µm
metals and ceramic surfaces
2MH
385 to 1600 °C
2MH1
490 to 2000 °C

-General Information 11-
CT 3M
3ML
50 to 400 °C
2,3 µm
metals at low object temperatures (from 50 °C)
3MH
100 to 600 °C
3MH1
150 to 1000 °C
3MH2
200 to 1500 °C
3MH3
250 to 1800 °C
CT G5
G5L
100 to 1200 °C
5,0 µm
measurement of glass
G5H
250 to 1650 °C
CT P3
P3
50 to 400 °C
3,43 µm
temperatures of thin film plastics
CT P7
P7
0 to 710 °C
7,9 µm
In the following chapters of this manual you will find only the short model codes.
On the 1M, 2M, 3M and G5 models the whole measurement range is split into several sub ranges (L, H, H1 etc.).

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1.6 Factory Default Settings
The unit has the following presetting at time of delivery:
Signal output object temperature
0-5 V
Emissivity
0,970 [LT/ G5/ P3/ P7]
1,000 [1M/ 2M/ 3M]
Transmissivity
1,000
Averaging (AVG)
0,2 s
LT15F/ LT25F: 0,1 s
1M/ 2M/ 3M: 0,001 s
Smart Averaging
inactive
LT15F, LT25F, 1M, 2M, 3M: active
Peak hold
inactive
Valley hold
inactive
LT
1ML
1MH
1MH1
2ML
2MH
2MH1
3ML
3MH
Lower limit temperature range [°C]
0
485
650
800
250
385
490
50
100
Upper limit temperature range [°C]
500
1050
1800
2200
800
1600
2000
400
600
Lower alarm limit [°C]
(normally closed)
30
600
800
1200
350
500
800
100
250
Upper alarm limit [°C]
(normally open)
100
900
1400
1600
600
1200
1400
300
500

-General Information 13-
3MH1
3MH2
3MH3
G5L
G5H
P3
P7
Lower limit temperature range [°C]
150
200
250
100
250
50
0
Upper limit temperature range [°C]
1000
1500
1800
1200
1650
400
710
Lower alarm limit [°C]
(normally closed)
350
550
750
200
350
70
30
Upper alarm limit [°C]
(normally open)
600
1000
1200
500
900
200
100
Lower limit signal output
0 V
Upper limit signal output
5 V
Temperature unit
°C
Ambient temperature compensation
(Output at OUT-AMB as 0-5 V signal on
LT, G5 and P7)
internal head temperature probe
Baud rate [kBaud]
115
Smart Averaging means a dynamic average adaptation at high signal edges.
[Activation via software only]. ►Appendix C –Smart Averaging

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2 Technical Data
2.1 General Specifications
Sensing head
Electronic box
Environmental rating
IP65 (NEMA-4)
IP65 (NEMA-4)
Operating Temperature
see: Measurement Specifications
0...85 °C
Storage temperature
see: Measurement Specifications
-40...85 °C
Relative humidity
10...95 %, non-condensing
Material
stainless steel
die casting zinc
Dimensions
28 mm x 14 mm or 32 mm x 14 mm, M12x1
89 mm x 70 mm x 30 mm
Dimensions CThot/ CT P3/ P7
55 mm x 29,5 mm, M18x1 (with massive housing)
Weight
40 g
420 g
Weight CThot/ CT P3/ P7
205 g (with massive housing)
Cable length
1 m (only LT02, LT15, LT22, CTfast)
3 m (Standard at CThot, 1M, 2M, 3M, G5, P3 and P7) 1)
8 m
15 m
Cable diameter
2,8 mm
Ambient temperature cable
max. 180 °C [High temperature cable for CThot: 250 °C]
Vibration
IEC 68-2-6: 3G, 11 –200 Hz, any axis
Shock
IEC 68-2-27: 50G, 11 ms, any axis

-Technical Data 15-
Software (optional)
CompactConnect
1) The 3M models are only available with 3 m cable length
2.2 Electrical Specifications
Power Supply
8–36 VDC
Current draw
max. 100 mA
Outputs/ analog
Channel 1
Channel 2 [LT/ G5/ P3/ P7 only]
selectable: 0/ 4–20 mA, 0–5/ 10 V, thermocouple (J or K) or alarm output (Signal source:
object temperature)
Head temperature [-20...180 °C/ -20...250 °C on LT02H and LT10H] 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
mV
Thermocouple
max. loop resistance 500 Ω(at 8-36 VDC)
min. 100 KΩ load impedance
20 Ω
Digital interfaces
USB, RS232, RS485, CAN, Profibus DP, Ethernet (optional plug-in modules)
Relay outputs
2 x 60 VDC/ 42 VACRMS, 0,4 A; optically isolated (optional plug-in module)
Functional inputs
F1-F3; software programmable for the following functions:
external emissivity adjustment
ambient temperature compensation

-16 -
trigger (reset of hold functions)
Input impedance F2 and F3: 43 kΩ
2.3 Measurement Specifications [LT models]
LT02
LT15
LT22
Temperature range (scalable)
-50...600 °C
-50...975 °C
Ambient temperature (head)
-20...130 °C
-20...180 °C
Storage temperature (head)
-40...130 °C
-40...180 °C
Spectral range
8...14 µm
Optical resolution
2:1
15:1
22:1
System accuracy 1), 2)
±1,0 °C or ±1,0 % 3)
Repeatability 1)
±0,5 °C or ±0,5 % 3)
Temperature coefficient 5)
±0,05 K/ K or ±0,05 %/ K (whichever is greater)
Temperature resolution (NETD) 3), 4)
0,1 K
0,05 K
Response time (95 % signal)
150 ms
Warm-up time
10 min
Emissivity/ Gain
0,100...1,100 (adjustable via programming keys or software)
Transmissivity
0,100...1,100 (adjustable via programming keys or software)
Interface (optional)
USB (programmable adapter)

-Technical Data 17-
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 200 ms and an object temperature of 25 °C
5) for ambient temperatures (head) <18 °C and >28 °C
On the LT02 models the head cable must not be moved during the measurement.
2.4 Measurement Specifications [CTfast/ CThot]
LT15F
LT25F
LT02H
LT10H
Temperature range (scalable)
-50...975 °C
-40...975 °C
Ambient temperature (head)
-20...120 °C
-20...250 °C
Storage temperature (head)
-40...120 °C
-40...250 °C
Spectral range
8...14 µm
Optical resolution
15:1
25:1
2:1
10:1
System accuracy 1), 2)
±2°C or ±1% 3)
±1,5°C or ±1% 3)
Repeatability 1)
±0,75 °C or ±0,75 % 3)
±0,5 °C or ±0,5 % 3)
Temperature coefficient 5)
±0,05 K/ K or ±0,05 %/ K (whichever is greater)
Temperature resolution (NETD) 3), 4)
0,2 K
0,04 K
0,25 K

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LT15F
LT25F
LT02H
LT10H
Response time (90 % signal)
9 ms
6 ms
100 ms
Warm-up time
10 min
Emissivity/ Gain
0,100...1,100 (adjustable via programming keys or software)
Transmissivity
0,100...1,100 (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 ≥ 20 °C
4) at time constant 100 ms with smart averaging and an object temperature of 25 °C
5) for ambient temperatures (head) <18 °C and >28 °C
On the CThot models [LT02H/ LT10H] the head cable must not be moved during the
measurement.

-Technical Data 19-
2.5 Measurement Specifications [1M/ 2M/ 3M models]
1ML
1MH
1MH1
2ML
Temperature range (scalable)
485...1050 °C
650...1800 °C
800...2200 °C
250...800 °C
Ambient temperature (head)
-20...100 °C
-20...125 °C
Storage temperature (head)
-40...100 °C
-40...125 °C
Spectral range
1,0 µm
1,6 µm
Optical resolution
40:1
75:1
40:1
System accuracy 1) 2)
±(0,3 % of reading +2°C)3)
Repeatability 1)
±(0,1 % of reading +1 °C)3)
Temperature coefficient 5)
±0,05 K/ K or ±0,05 %/ K (whichever is greater)
Temperature resolution (NETD)
0,1 K 3)
Exposure time (90 % signal)
1 ms 4)
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
2) Accuracy for thermocouple output: ±2,5°C or ±1%
3) = 1/ Response time 1s
4) with dynamic adaptation at low signal levels
5) for ambient temperatures (head) <18 °C and >28 °C

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2MH
2MH1
3ML
3MH
Temperature range (scalable)
385...1600 °C
490...2000 °C
50...400 °C 1), 2)
100...600 °C 1), 2)
Ambient temperature (head)
-20...125 °C
-20...85 °C
Storage temperature (head)
-40...125 °C
-40...125 °C
Spectral range
1,6 µm
2,3 µm
Optical resolution
75:1
22:1
33:1
System accuracy 3) 4)
±(0,3 % of reading +2°C)5)
Repeatability 3)
±(0,1 % of reading +1 °C)5)
Temperature coefficient 7)
±0,05 K/ K or ±0,05 %/ K (whichever is greater)
Temperature resolution (NETD)
0,1 K 5)
Exposure time (90 % signal)
1 ms 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) Specification valid at TObject ≥ start of measurement range + 50°C
3) at ambient temperature 235 °C
4) Accuracy for thermocouple output: ±2,5°C or ±1%
5) = 1/ Response time 1s
6) with dynamic adaptation at low signal levels
7) for ambient temperatures (head) <18 °C and >28 °C