optris CT Operator's Manual
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optris CT Operator's Manual

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

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  • Page 1 Operators manual ® optris LT/ LTF/ LTH/ 1M/ 2M/ 3M/ G5/ P3/ P7 Infrared-thermometer...
  • Page 2 Optris GmbH Ferdinand-Buisson-Str. 14 13127 Berlin GERMANY Tel.: +49 30 500 197-0 Fax: +49 30 500 197-10 E-mail: info@optris.de Internet: www.optris.de...

  • Page 3: Table Of Contents

    Table of Contents Table of Contents Table of Contents ............................. 3 General Information ..........................7 Description ............................7 Warranty ............................8 Scope of Supply ..........................8 Maintenance ............................. 9 Model Overview ..........................10 Factory Default Settings ......................... 12 Technical Data ............................14 General Specifications ........................
  • Page 4 Measurement Specifications [1M/ 2M/ 3M models] ............... 19 Measurement Specifications [G5/ P7 models] ................22 Optical Charts ..........................23 CF Lens and Protective Window ....................34 Mechanical Installation .......................... 38 Mounting Accessories ........................41 Air Purge Collars ..........................42 Further Accessories ........................44 Electrical Installation ..........................
  • Page 5 Table of Contents Outputs and Inputs ..........................57 Analog Outputs ..........................57 Digital Interfaces ..........................58 Relay Outputs ..........................58 Functional Inputs ..........................59 Alarms ............................60 Operating ..............................61 Sensor Setup ..........................61 Error messages ..........................67 Software CompactConnect ........................68 Installation ............................
  • Page 6 Definition............................73 Determination of unknown Emissivity .................... 73 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...

  • Page 7: General Information

    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.

  • Page 8: Warranty

    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...

  • Page 9: Maintenance

    General Information 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).

  • Page 10: Model Overview

    1.5 Model Overview The sensors of the CT series are available in the following basic versions: Model Model codes Measurement Spectral Typical applications range response LT02 -50 to 600 °C CT LT LT15 8-14 µm non-metallic surfaces LT22 -50 to 975 °C...
  • Page 11 General Information 50 to 400 °C 100 to 600 °C CT 3M 3MH1 150 to 1000 °C 2,3 µm metals at low object temperatures (from 50 °C) 3MH2 200 to 1500 °C 3MH3 250 to 1800 °C 100 to 1200 °C CT G5 5,0 µm...

  • Page 12: Factory Default Settings

    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...
  • Page 13 General Information 3MH1 3MH2 3MH3 Lower limit temperature range [°C] Upper limit temperature range [°C] 1000 1500 1800 1200 1650 Lower alarm limit [°C] (normally closed) Upper alarm limit [°C] 1000 1200 (normally open) Lower limit signal output Upper limit signal output Temperature unit °C Ambient temperature compensation...

  • Page 14: Technical Data

    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...

  • Page 15: Electrical Specifications

    Technical Data Software (optional) CompactConnect 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 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 Channel 2 [LT/ G5/ P3/ P7 only]...

  • Page 16: Measurement Specifications [Lt Models]

     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...

  • Page 17: Measurement Specifications [Ctfast/ Cthot]

    Technical Data Signal processing Average, peak hold, valley hold (adjustable via programming keys or software) at ambient temperature 235 °C; whichever is greater Accuracy for thermocouple output: ±2,5°C or ±1% at object temperatures >0 °C, ε = 1 at time constant 200 ms and an object temperature of 25 °C for ambient temperatures (head) <18 °C and >28 °C On the LT02 models the head cable must not be moved during the measurement.
  • Page 18 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) at ambient temperature 235 °C;...

  • Page 19: Measurement Specifications [1M/ 2M/ 3M Models]

    Technical Data 2.5 Measurement Specifications [1M/ 2M/ 3M models] 1MH1 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...
  • Page 20 2MH1 1), 2) 1), 2) Temperature range (scalable) 385...1600 °C 490...2000 °C 50...400 °C 100...600 °C 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 3) 4) System accuracy...
  • Page 21 Technical Data 3MH1 3MH2 3MH3 Temperature range (scalable) 150...1000 °C 200...1500 °C 250...1800 °C Ambient temperature (head) -20...85 °C Storage temperature (head) -40...125 °C Spectral range 2,3 µm Optical resolution 75:1 1) 3) System accuracy ±(0,3 % of reading +2°C) Repeatability ±(0,1 % of reading +1 °C) Temperature coefficient...

  • Page 22: Measurement Specifications [G5/ P7 Models]

    2.6 Measurement Specifications [G5/ P7 models] Temperature range (scalable) 100...1200 °C 250...1650 °C 50...400 °C 0...710 °C Ambient temperature (head) -20...85 °C 0...75 °C -20...85 °C Storage temperature (head) -40...85 °C Spectral range 5,0 µm 3,43 µm 7,9 µm Optical resolution 10:1 20:1 15:1...

  • Page 23: Optical Charts

    The spot size refers to 90 % of the radiation energy. The distance is always measured from the front edge of the sensing head. As an alternative to the optical diagrams, the spot size calculator can also be used on the optris website http://www.optris.com/spot-size-calculator.
  • Page 24 LT25F Optics: SF D:S: 25:1 LT22 Optics: SF D:S: 22:1 LT22 Optics: CF D:S: 22:1 2,3mm@ 50mm D:S (far field) = 6:1...
  • Page 25 Technical Data LT15 LT15F Optics: SF D:S: 15:1 LT15 Optics: CF D:S: 15:1 3,0mm@ 50mm D:S (far field) = 5:1...
  • Page 26 LT10H Optics: SF D:S: 10:1 LT10H Optics: CF1 D:S: 10:1 3,0mm@ 30mm D:S (far field) = 3:1...
  • Page 27 Technical Data LT02 LT02H Optics: SF D:S: Optics: SF D:S: 20:1...
  • Page 28 Optics: CF D:S: 40:1 2,7mm@ 110mm D:S (far field) = 12:1 Optics: SF D:S: 40:1...
  • Page 29 Technical Data 1MH1 2MH1 3MH1-H3 Optics: CF D:S: 75:1 1,5mm@ 110mm D:S (far field) = 14:1 1MH1 2MH1 3MH1-H3 Optics: SF D:S: 75:1...
  • Page 30 Optics: SF D:S: 22:1 Optics: CF1 D:S: 22:1 1,5mm@ 30mm D:S (far field) = 3,5:1...
  • Page 31 Technical Data Optics: CF D:S: 22:1 5mm@ 110mm D:S (far field) = 9:1 Optics: SF D:S: 33:1...
  • Page 32 Optics: CF1 D:S: 33:1 1,0mm@ 30mm D:S (far field) = 4:1 Optics: CF D:S: 33:1 3,4mm@ 110mm D:S (far field) = 11:1...
  • Page 33 Technical Data Optik: SF D:S: 15:1...

  • Page 34: Cf Lens And Protective Window

    2.8 CF Lens and Protective Window The optional CF lens allows the measurement of very small objects Typical Transmission values* if the and can be used in combination with all LT, 1M, 2M and 3M models. CF lens is used (average values): The minimum spot size depends on the used sensing head.
  • Page 35 Technical Data CF lens: Laminar air purge with integrated CF lens with external thread: ACCTCF/ ACCTCFHT CF lens: ACCTCFE/ ACCTCFHTE Protective window: ACCTAPLCF/ ACCTAPLCFHT Protective window with external ACCTPW/ ACCTPWHT thread: ACCTPWE/ ACCTPWHTE LT25F + CF lens 0,5 mm@ 8 mm 0,5 mm@ 6 mm [ACCTAPLCF] D:S (far field) = 1,6:1...
  • Page 36 LT22 + CF lens 0,6 mm@ 10 mm 0,6 mm@ 8 mm [ACCTAPLCF] D:S (far field) = 1,5:1 LT15/ LT15F + CF lens 0,8 mm@ 10 mm 0,8 mm@ 8 mm [ACCTAPLCF] D:S (far field) = 1,5:1...
  • Page 37 Technical Data LT10H + CF lens 1,2 mm@ 10 mm 1,2 mm@ 8 mm [ACCTAPLCF] D:S (far field) = 1,2:1 LT02/ LT02H + CF lens 2,5 mm@ 23 mm 2,5 mm@ 21 mm [ACCTAPLCF] D:S (far field) = 2,5:1...

  • Page 38: Mechanical Installation

    3 Mechanical Installation The CT sensing heads are equipped with a metrical M12x1-thread and can be installed either directly via the sensor thread or with help of the hex nut (included in scope of supply) to the mounting bracket available.
  • Page 39 Mechanical Installation The CThot- and CTP3/ P7-sensors will be delivered with the massive housing and can be installed via the M18x1-thread. Massive housing (Standard on CThot, P3 and P7) Make sure to keep the optical path clear of any obstacles.
  • Page 40 Electronic box The electronic box is also available with closed cover (display and programming keys with no access from outside) [ACCTCOV]. On the CT models LT02, LT02H and LT10H the head cable must not be moved during the measurement.

  • Page 41: Mounting Accessories

    Mechanical Installation 3.1 Mounting Accessories Mounting bracket, adjustable in Mounting bolt with M12x1 thread, Mounting fork with M12x1 one axis [ACCTFB] adjustable in one axis [ACCTMB] thread, adjustable in 2 axes [ACCTMG] The Mounting fork can be combined with the Mounting bracket [ACCTFB] using the M12x1 thread.

  • Page 42: Air Purge Collars

    3.2 Air Purge Collars The lens must be kept clean at all times from dust, smoke, fumes and other contaminants in order to avoid reading errors. These effects can be reduced by using an air purge collar. Make sure to use oil-free, technically clean air, only.
  • Page 43 Mechanical Installation A combination of the Laminar air purge collar with the bottom section of the Mounting fork allows an adjustment in two axes. [ACCTAPL+ACCTMG] Laminar air purge collar [ACCTAPL] The sideward air outlet prevents a cooling down of the object in short distances. Hose connection: 3x5 mm Thread (fitting): M5 The needed amount of air (approx.

  • Page 44: Further Accessories

    Example: LT22 and object with emissivity = 0,85 0,85 x 0,96 = 0,816 Thus the emissivity in the CT has to be set to the resulting value of 0,816. Laser-Sighting tool [D08ACCTLST] battery powered (2x Alcaline AA), for alignment of CT sensing heads.
  • Page 45 [ACCTOEMLSTCB8]. The laser can be connected to the pins 3V SW and GND [►4 Electrical Installation] and switched on and off via the programming keys or via the software. The special double-hole mounting bracket [ACCTFB2] allows a simultaneous mounting of the CT sensing head and the laser head.
  • Page 46 Massive Housing Massive housing, stainless steel [D06ACCTMHS] – also available in aluminum (anodized) or brass The Massive housing allows reproducible and stable measurements on applications with significant and short-term variation in ambient temperatures. It can be combined with the CF lens [ACCTCFE] or with the protective window [ACCTPWE].
  • Page 47 Mechanical Installation Accessories for Massive Housing Air purge collar for massive housing (thread M18x1) Mounting bracket for massive housing, [ACCTAPMH] adjustable in one axis [ACCTFBMH]...
  • Page 48 Pipe Adapter and Sighting Tubes The pipe adapter [ACCTPA] allows an assembling of sighting tubes directly on the CT head. The sighting tubes are available in 3 different lengths: ACCTST20 20 mm ACCTST40 40 mm ACCTST88 88 mm Pipe adapter [ACCTPA]...
  • Page 49 Mechanical Installation Rail Mount Adapter for Electronic box With the rail mount adapter the CT electronics can be mounted easily on a DIN rail (TS35) according EN50022. Rail Mount Adapter [ACCTRAIL] Tilt Assembly for CT heads With this mounting accessory a fine adjustment of the CT head with an off-axis angle +/- 6,5°...

  • Page 50: Electrical Installation

    4 Electrical Installation 4.1 Cable Connections For the electrical installation of the CT please open at first the cover of the electronic box (4 screws). Below the display are the screw terminals for the cable connection. Designation [models LT/ G5/ P3/ P7] +8…36 VDC...
  • Page 51 Please use a stabilized power supply unit with an output voltage in the range of 8–36 VDC which can supply 100 mA. The ripple should be max. 200 mV. Please do never connect a supply voltage to the analog outputs as this will destroy the output! The CT is not a 2-wire sensor!
  • Page 52 Cable Assembling The cable gland M12x1,5 allows the use of cables with a diameter of 3 to 5 mm. Remove the isolation from the cable (40 mm power supply, 50 mm signal outputs, 60 mm functional inputs). Cut the shield down to approximately 5 mm and spread the strands out. Extract about 4 mm of the wire isolation and tin the wire ends.

  • Page 53: Ground Connection

    Electrical Installation 4.2 Ground Connection 4.2.1 1M, 2M, 3M models At the bottom side of the mainboard PCB you will find a connector (jumper) which has been placed from factory side as shown in the picture [bottom and middle pin connected]. In this position the ground connections (GND power supply/ outputs) are connected with the ground of the electronics housing.

  • Page 54: Lt, Ltf, Lth, G5, P3, P7 Models

    4.2.2 LT, LTF, LTH, G5, P3, P7 models At the bottom side of the mainboard PCB you will find a connector (jumper) which has been placed from factory side as shown in the picture [left and middle pin connected]. In this position the ground connections (GND power supply/ outputs) are connected with the ground of the electronics housing.

  • Page 55: Exchange Of The Sensing Head

    Electrical Installation 4.3 Exchange of the Sensing Head From factory side the sensing head has already been After exchanging a head the calibration connected to the electronics and the calibration code has code of the new head must be entered into the electronics.
  • Page 56 [►6 Operating] Sensing Head Cable On all CT models (exception 3M, P3, P7) the sensing head cable can be shortened if necessary. On the models 1M, 2M and CTfast the sensing head cable can be shortened by max. 3 m.

  • Page 57: Outputs And Inputs

    CAUTION: Please do never connect a supply voltage to 5.1 Analog Outputs the analog outputs as this will destroy the output. The CT has two analog output channels. The CT is not a 2-wire sensor! Output channel 1 This output is used for the object temperature. The selection of the output signal can be done via the programming keys [►6 Operating].

  • Page 58: Digital Interfaces

    Please pay attention to the notes on the according interface manuals. 5.3 Relay Outputs The CT can be optionally equipped with a relay output. The relay board will be installed the same way as the digital interfaces. A simultaneous installation of a digital interface and the relay outputs is not possible.

  • Page 59: Functional Inputs

    Outputs and Inputs The switching thresholds are in accordance with the values for alarm 1 and 2 [►5.5 Alarms]. The alarm values are set according to the ►1.6 Factory Default Settings. To make advanced settings (change of low- and high alarm) a digital interface (USB, RS232) and the software is needed.

  • Page 60: Alarms

    5.5 Alarms All alarms (alarm 1, alarm 2, output channel 1 and 2 if used as The CT has the following Alarm features: alarm output) have a fixed hysterese of 2 K (CThot: 1 K). Output channel 1 and 2 [channel 2 on LT/ G5/ P3/ P7 only] To activate the according output channel has to be switched into digital mode.

  • Page 61: Operating

    The signal processing features Peak hold and Valley hold cannot be selected simultaneously. Factory Default Setting To set the CT back to the factory default settings, please press at first the Down-key and then the Mode-key and keep both pressed for approx. 3 seconds.
  • Page 62 Display Mode [Sample] Adjustment Range 142.3C Object temperature (after signal processing) [142,3 °C] fixed 127CH Head temperature [127 °C] fixed 25CB Box temperature [25 °C] fixed 142CA Current object temperature [142 °C] fixed 0-20 = 0–20 mA/ 4-20 = 4–20 mA/ MV5 = 0–5 V/ Signal output channel 1 [0-5 V] MV10 = 0-10 V/...
  • Page 63 Operating Selection of the Output signal. By pressing Up or Down the different output signals can be selected (see table). E0.970 Setup of Emissivity. Pressing Up increases the value, Down decreases the value (also valid for all further functions). The emissivity is a material constant factor to describe the ability of the body to emit infrared energy [►9 Emissivity].
  • Page 64 V---- Setup of Valley hold. In this mode the sensor waits for ascending signals. The definition of the algorithm is according to the peak hold algorithm (inverted). If the value is set to 0.0 the display will show --- (function deactivated). Signal graph with P---- ▬...
  • Page 65 Operating Setup of the Lower limit of temperature range. The minimum difference between lower and upper limit is 20 K. If you set the lower limit to a value ≥ upper limit the upper limit will be adjusted to [lower limit + 20 K] automatically. n 500.0 Setup of the Upper limit of the temperature range.
  • Page 66 If XHEAD is shown the ambient temperature value will be taken from the head-internal probe. To return to XHEAD please press Up and Down together. Especially if there is a big difference between the ambient temperature at the object and the head temperature the use of Ambient temperature compensation is recommended.

  • Page 67: Error Messages

    Operating 6.2 Error messages The display of the sensor can show the following error messages: LT/ G5/ P3/ P7 models: OVER Object temperature too high UNDER Object temperature too low ^^^CH Head temperature too high Head temperature too low 1M/ 2M/ 3M models: 1.

  • Page 68: Software Compactconnect

    7 Software CompactConnect 7.1 Installation Minimum system requirements:  Windows XP, Vista, 7, 8, 10 Insert the installation CD into the according drive on  USB interface your computer. If the autorun option is activated the  Hard disc with at least 30 MByte free space installation wizard will start automatically.

  • Page 69: Communication Settings

    Flow control: Protocol All sensors of the CT series are using a binary protocol. Alternatively they can be switched to an ASCII protocol. To get a fast communication the protocol has no additional overhead with CR, LR or ACK bytes.
  • Page 70 ASCII protocol The models LT02, LT15, LT22, LT02H and LT10H can be switched to ASCII by changing the first figure of block 3 of the head calibration code. This figure has to be changed from 0 to 4 (old sensing head) or 8 to C (new sensing head).
  • Page 71 Software CompactConnect Saving of parameter settings After power on of the CT sensor the flash mode is active. It means, changed parameter settings will be saved in the CT-internal Flash-EEPROM and will be kept also after the sensor is switched off.

  • Page 72: Basics Of Infrared Thermometry

    8 Basics of Infrared Thermometry Depending on the temperature each object emits a certain amount of infrared radiation. A change in the temperature of the object is accompanied by a change in the intensity of the radiation. For the measurement of “thermal radiation”...

  • Page 73: Emissivity

    Emissivity 9 Emissivity 9.1 Definition The intensity of infrared radiation, which is emitted by each body, depends on the temperature as well as on the radiation features of the surface material of the measuring object. The emissivity (ε – Epsilon) is used as a material constant factor to describe the ability of the body to emit infrared energy.

  • Page 74: Characteristic Emissivity

    ► Cove a part of the surface of the measuring object with a black, flat paint with an emissivity of 0,98. Adjust the emissivity of your infrared thermometer to 0,98 and take the temperature of the colored surface. Afterwards, determine the temperature of a directly adjacent area and modify the emissivity until the measured value corresponds to the temperature of the colored surface.

  • Page 75: Appendix A - Table Of Emissivity For Metals

    Appendix A – Table of Emissivity for metals Appendix A – Table of Emissivity for metals Material typical Emissivity Spectral response 1,0 µm 1,6 µm 5,1 µm 8-14 µm Aluminium non oxidized 0,1-0,2 0,02-0,2 0,02-0,2 0,02-0,1 polished 0,1-0,2 0,02-0,1 0,02-0,1 0,02-0,1 roughened 0,2-0,8...
  • Page 76 Material typical Emissivity Spectral response 1,0 µm 1,6 µm 5,1 µm 8-14 µm Lead polished 0,35 0,05-0,2 0,05-0,2 0,05-0,1 roughened 0,65 oxidized 0,3-0,7 0,2-0,7 0,2-0,6 Magnesium 0,3-0,8 0,05-0,3 0,03-0,15 0,02-0,1 Mercury 0,05-0,15 0,05-0,15 0,05-0,15 Molybdenum non oxidized 0,25-0,35 0,1-0,3 0,1-0,15 oxidized 0,5-0,9 0,4-0,9...

  • Page 77: Appendix B - Table Of Emissivity For Non-Metals

    Appendix B – Table of Emissivity for non-metals Appendix B – Table of Emissivity for non-metals Material typical Emissivity Spectral response 1,0 µm 2,2 µm 5,1 µm 8-14 µm Asbestos 0,95 Asphalt 0,95 0,95 Basalt Carbon non oxidized 0,8-0,9 0,8-0,9 0,8-0,9 graphite 0,8-0,9...

  • Page 78: Appendix C - Smart Averaging

    Appendix C – Smart Averaging The average function is generally used to smoothen the output signal. With the adjustable parameter time this function can be optimal adjusted to the respective application. One disadvantage of the average function is that fast temperature peaks which are caused by dynamic events are subjected to the same averaging time.

  • Page 79: Appendix D - Declaration Of Conformity

    Appendix D – Declaration of Conformity Appendix D – Declaration of Conformity...

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