Operating instructions Infrared temperature sensor TW20xx
Contents
1. xs 4 4 Lower threshold delay To make sure the output impulse is correctly identified e g by a downstream control system the output impulse can be lengthened e Lower threshold delay EF dr zx 4 5 Switching functions oe mai EAR art eu oe Wen en Pe Pe ER gy TT I wt e oni at o fart Men KN Se ee ha Teperature profile Switch signal Hno Switch signal Hno with upper and lower threshold delay Switch signal Hnc Switch signal Hnc with upper and lower threshold delay 4 6 Internal signal processing Temperature I Switch point see Lower upper threshold delay Switching 4 7 Analogue output UK The infrared temperature sensor is equipped with an analogue output OUT2 4 20 mA The maximum load is 500 Q The output current is linear to the measured temperature The output current is linear to the measured temperature Within the overall measuring range the required measuring range can be set to C or F using parameter ASP2 scale beginning and parameter AEP2 scale end Emissivity of materials The infrared temperature sensor reacts to the thermal energy infrared radiation emitted by an object The ability to radiate heat depends on the type of material and its surface properties A description of the calculation of emissivity is in Chapter 13 Page 23 The ability of a body to emit infrared radiation is expressed by a material constant called emissivity coeffici2. 65 C it must be either cooled or shielded from excess radiant heat by means of a deflector plate 12 4 Error indications Overload output The corresponding LED will flash at 4 Hz The P display shows SL 1 at 2 HZ 21 Display ac alternately shows overtempera ture and measurement reading at 0 5 Hz The corresponding LED flashes at 4 Hz when the output is switched off Incorrect connection of SUP switching output LED flashes at 2 Hz ply voltage LED display switching output and analogue Overtemperature supply voltage output are deactivated When voltage 2 16 lt approx 16 V V the device switches on and the switching outputs are activated Temperature below lower threshold The display shows Ut Temperature above upper i threshold The display shows Ut 13 Ways to determine emissivity Technical literature or operating manuals often contain data on the emissivity of various materials This information should be used with caution however It is important to know for which temperature and which wavelength the emissivity value Is applicable Furthermore the stated emissivity values were obtained under ideal conditions In actual practice the total emissivity of the target object will vary depending on the amount of extraneous radiation transmitted through the object from the background or reflected onto the object from the foreground The emissivity can be determined using one of the following methods Con
3. conforms to these standards Radio interference may arise if the infrared temperature sensor is intercon nected with such peripheral devices which have not been properly interference suppressed This may necessitate additional interference suppression measures 3 General Description The infrared temperature sensor detects temperatures and monitors temperature ranges without contact The sensor detects the infrared energy radiated by a hot object and converts this to an electric switch signal The advantage of this technique is that there is no me chanical contact between the sensor and the hot object The instrument is suitable for the following applications e Measurements at moving or hard to reach objects e Measurements at surface treated or voltage carrying objects e Measurements at sticky materials such as dough or aggressive chemicals e Applications requiring fast response times The rugged stainless steel housing enables the instrument to be used in harsh industrial environments The instruments are splash proof according to IP65 DIN 40050 The infrared temperature sensor has an analogue output and a switching contact which can be used as normally closed or normally open contact depend ing on the configuration 4 Function The infrared temperature sensor measures the temperature without contact to the target The infrared sensor is equipped with an analogue output and an open collector output The instrument s display p
4. CE 706365 00 03 2014 ifm electronic Operating instructions Infrared temperature sensor eferctoreoo TW20xx 7 li 109 D Contents 1 General 4 1 1 Information about this manual 4 1 2 Liability and Warranty seroorernrorsrrrrorersvorsnrernvrrsvrernrersversnrsesversvrsnnressvrssvveennen 4 1 3 Copyright meerervrvrrervrrvernrernrervresversversresnresvessvesnvessvesnessvessvesnressrsssvssvessvenns 5 ES E 5 2 1 Intended use 5 2 2 User s responsiblity 0 0 eee ecsesesecssecssscesssesseecsescsesceesssesseeceesceeseatessesseseneeees 5 2 3 Safety requirements cccccscesccsccssscsesssecssecseccsescsesssecseecsescsessseseeesnsensees 5 2 4 Electromagnetic Compatibility ssrrrvrrrvrrnvrrnvornrrrvrrrvensvennvervrrrvrrsversveenvennnn 5 3 General Descnpton 6 4 Function PE 6 4 1 Switching threshold cccccscsesscsssccssccsescesseessseceeceesceesaessesceescerseteeeeneees T 4 2 Output signal oo ccc ccsecssssecsescsecssscseseecsesssecsesescseseeeseeseaeseesceeseeseateeeeees 7 4 3 Upper threshold delay s seseeseeneeneenseneenesnrsrrunrnnrerrsrrsrrnnrnrrnrrnrrnnrnnrerrerrnereene 7 4 4 Lower threshold dea H 4 5 Switching FUNCTIONS cee ccscsccsescsecssesseeseecsesseecsesescsesssecaeseeecanseatsaeseaeseneees 8 4 6 Internal signal processing rrrrrrrnvrrnrrrnvrrnvrrn rn vrrnnrrrnrrrnrarnrernvernrrnnrernrernnennn 9 4 7 Analogue oufput 9 5 Electrical connection r
5. T 2 End of range Analogue end value for the range of OUT2 Advanced functions select menu advanced functions 9 2 Advanced functions Upper threshold delay Lower threshold delay oo normally opened mc normally closed Honda OUT2 Beginning of range Analogue start value for the range of OUT2 Output function Dampin Damping for the temperature display ping switch outputs and analogue output Peak hold function Configuration of the peak hold function EEN WW Adaptation of the radiation characteristics of Emissivity coefficient the target object Test function Activates diagnostics for self test un Temperature unit Temperature displayed in F or C 15 10 Setup The infrared temperature sensor uses the intensity of infrared radiation for non contact temperature measurements It is necessary to configure the infrared tem perature sensor to the respective emissivity coefficient of the measuring object to obtain exact measuring results gt 13 Emissivity coefficient tables An incorrectly set emissivity coefficient leads to wrong temperature readings Set the emissivity coefficient after connecting the supply voltage or resetting the parameters to factory settings The display then shows three horizontal strokes The emissivity is set as follows gt Press Enter gt The display shows EPS 1 gt Press Enter gt the display shows non E gt V hold key until the required value is displayed Pre
6. TE GOODS OR SERVICES LOSS OF USE 26 DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER IN CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE 17 Default settings factory settings Default parameters TW2000 TW2001 TW2002 TW2011 User con WE figuration se oc oc oc o wi 230 orc 960 C sac 5 aspa o 250 C so oc ap 1000 1600 2500 1600 ce n e D Weitere Informationen unter www ifm com 2
7. anel shows the measured temperature 6 e It generates 2 output signals according to the configured function OUT1 Switching threshold OUT2 Analogue output 4 20 mA 4 1 Switching threshold OUT1 changes its switching status when the configured upper and lower thresh olds SP1 rP1 are exceeded First set the switch point SP1 in C or F Then set the lower threshold rP1 UK When you adjust the upper threshold SP1 the lower threshold rP1 will change accordingly The span remains the same If SP1 is lowered to a value where the span cannot be maintained as rP1 would then fall below its minimum value the rP 1 is kept with its minimum value If SP1 subsequently increases again rP1 also immediately increases 4 2 Output signal The following switching functions can be selected e Normally open contact EF gt ou i Hna normally open e Normally closed contact EF gt aw i Hrac normally closed 4 3 Upper threshold delay Once the sensor has detected a temperature which exceeds the switching threshold SP1 the time delay dS1 starts running When this delay period has elapsed the output OUT1 activates switching This status is sustained until the lower threshold rP 1 is violated If this occurs before the time delay has elapsed the delay will reset This function can be used for example to suppress spurious impulse signals at the output Z e Upper threshold delay E F gt 05 i
8. ent or just emissivity This coefficient lies between 0 and 100 A body with ideal radiation black body has a coefficient of 100 At the same temperature bodies with real radiation emit a lower radiation Therefore the emissiv ity coefficient is lt 100 Um mit dem Infrarot For this reason adjust the emissivity coefficient of the target object on the infrared temperature sensor to be able to determine the exact temperature With the configured lower emissivity coefficient the infrared temperature sensor automatically com pensates for the lower radiation e Emissivity EF gt EFS i xs 5 Electrical connection A ATTENTION The infrared temperature sensor may only be installed by a skilled qualified electrician Do not connect the instrument while the voltage supply source Is turned on Please observe international safety regulations at all times gt Switch to neutral and verify absence of voltage gt Connect the instrument according to the following schematic el BN MS 14 l gt 2WHI I our DEN l Test Input N brown a output Din A K black Se Collector switching output 1 Imax 100 MA ma a The infrared temperature sensor must be protected against high voltage and strong electromagnetic fields Use a shielded cable connecting it via connector casing to the device housing H Use a flyback diode when switching inductive loads 6 Shielding and Grounding 6 1 Equipotential bonding The infra
9. hilip Soeberg Peter Jansen Anatoly Sokolov Reinhard Jessich Nils Kristian Strom Magnus Johansson Michael Stumpf Artur Lipowski Stefan Swanepoel Marek Michalkiewicz Eric B Weddington Colin O Flynn Joerg Wunsch Bob Paddock Dmitry Xmelkov Reiner Patommel The Regents of the University of California Michael Rickman All rights reserved Redistribution and use in source and binary forms with or without modification are permitted provided that the following conditions are met Redistributions of source code must retain the above copyright notice this list of conditions and the following disclaimer Redistributions in binary form must reproduce the above copyright notice this list of condi tions and the following disclaimer in the documentation and or other materials provided with the distribution Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permis sion THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WAR RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED INNO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL SPECIAL EXEMPLARY OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO PROCUREMENT OF SUBSTITU
10. k hold function oe GW Ph 11 6 Reset all parameters to factory settings gt rES select in menu advanced functions gt Press Enter gt A or and hold gt Is displayed gt Press Enter gt The display shows After a reset to factory settings configure the emissivity coefficient Er 34 again to obtain exact measuring results 20 12 Operation After connecting the supply voltage the infrared temperature sensor will be automatically initialized and will perform a self diagnosis After approx 0 5 sec the sensor Is ready to operate and the instrument runs the signal processing 12 1 Display of the configuration parameters in the main menu gt Press Enter to access the main menu gt Y press key until the required parameter is displayed gt Press Enter UK gt The display will indicate the parameter value for 30 sec After that it returns to Run Mode 12 2 Display of the configuration parameters for advanced functions gt Press Enter gt V Press key until the parameter E F is displayed gt Press Enter gt Y Press key until the required parameter is displayed gt Press Enter gt The display will indicate the parameter value for 30 sec After that it returns to Run Mode 12 3 Ambient temperature The maximum permissible ambient operating temperature for the infrared tem perature sensor is 65 C If the instrument is used in ambient temperatures above
11. ng UV radiation must be complied with at all times It is imperative to comply with the safety instructions and the accident protection regulations valid for the area of application Explanation of symbols Important safety related references in this manual are marked with a symbol A ATTENTION This symbol points out guidelines If you do not observe them the device might be damaged malfunctioning or even fail to operate CAUTION This symbol points out hints and information which should be heeded for efficient and trouble free operation gt Action This symbol instructs the operator to take action gt Reaction Result This symbol indicates the result of the action taken 1 2 Liability and Warranty All information compiled in this manual is in accordance with applicable regula tions The statements made are based on state of the art technology and reflect our ex tensive knowledge and many years of experience Always carefully read this Operating Manual before beginning any work on or with the in strument especially prior to installation and initial setup The Manufacturer shall not be held liable for any damages or malfunctions aris ing from a disregard of the warnings and instructions contained herein 1 3 Copyright This Operating Manual should be treated as confidential It is solely intended for use by persons involved with the instrument This manual may not be made available to a third party without prior Manufact
12. red temperature sensor housing is connected to the shielding via the cable connector Differences in ground potentials might cause an equalising current to flow between devices through a cable shielded at both ends In this case be sure to install an additional equipotential bonding line To avoid an equalising current the infrared temperature sensor can be mounted electrically insulated The shielding must be connected to the plant s earthing system lf the infrared temperature sensor is installed without an insulator and with out potential equalisation the interference voltage may not exceed 32V 11 7 Operating controls and display The infrared temperature sensorr TW20xx features a 4 digit display 3 control keys and 3 LEDs The instrument s display panel shows the measured temperature 00 GI O av 1 to 3 Indicator LEDs LED 1 indicates switching output of the respective output LED 2 temperature in F LED 3 temperature in C Indicates temperature value Indicates parameters and configuration Indicates overload at switching output 12 8 Menu 8 1 Display of measurement reading 8 2 Main menu t Display of measurement reading Advanced functions 19 8 3 Advanced functions t Main menu 9 Menu explanation 9 1 Main menu Parameter Function Zommen OUT1 Upper threshold Upper threshold which activates OUT OUT1 Lower threshold Lower threshold which activates OUT OU
13. rvrrnrervrrnvernrrsvrrnresvrrnresvernrssvrrsrernressernen 19 11 6 Reset all parameters to factory seine 20 12 Operation eececccsseccsecssecssrscssecseescseecsuescstecsuescsusessecutseatecuesetesseeseansensesses 12 1 Display of the configuration parameters in the main men 12 2 Display of the configuration parameters for advanced functions 12 3 Ambient temperature rrrrrrnrrrrnronrvrrrsvrrrsvrrerveresversnrensvrersvrssnvessressvressnren 12 4 Error INdiCations ccccccccscssccseccseecssscsescseeceeceesseesseesaeeeesssesesessaeseeeeees 13 Ways to determine emissivity rrrrrnrrrnrrrnrrnnrrrnvrrsvrrnnrrrvrrrvrrnnrrrnrernrernrrrnrennn 22 13 1 Emissivity coefficient ole 29 14 Maintenance 25 14 1 Cleaning the pyrometer leng 25 15 Shipping packaging and depoeal 25 15 1 Transport Inspektion sesessesreenresrrerrenrrerrnsrrsrrnsrrnnrnnrnnnrrnrrnerrnrreerrnerenrrns 20 15 2 Prva 26 16 Copyright ENEE 26 17 Default settings factory settings rrrrrrnrrrvrrnrrrvrrnrrrvrrnrervrrrrervrrnrrrnrrrnennen 27 1 General 1 1 Information about this manual The Operating Manual shall enable the user to properly install the infrared tem perature sensor and the required accessories Before starting installation be sure to read and understand this entire manual in particular the chapter on safety The instructions contained in this manual especially those concerning safety as well as site specific regulations governi
14. s or gt Switch over A or V from the advanced functions menu to the main menu from the main menu to the measurement reading The instrument features a keylock Activate deactivate the keylock as fol lows gt Press key A Y simultaneously and hold them down for 10 sec gt The display shows loc or unlock for 1 sec If you press both keys A V only briefly you will exit the layer ESC func tion 11 2 Change between the menu layers Change to the submenu advanced Use parameter EF functions gt Select submenu with V and press Enter to change to the submenun Back to measurement reading gt Wait 30 sec Or gt return with A or V virom the submenu to the main menu from the main menu to the measure ment reading 11 3 Test function The infrared temperature sensor features an integrated diagnostics function to check signal processing the switching output and the analogue output It can be activated either using the control keys or by a static signal 10 34 V according to IEC 61131 2 on Pin 5 Voltage must be applied for at least t gt 300 ms The unit performs a self test The display shows ut analogue output 20 5 mA To deactivate the diagnostics function the static signal must be available for a period of 300 msec Low 18 If the diagnostics function is activated using the control keys on the instrument it will remain in this mode for 10 sec If the diagnostics function is not
15. ss Enter gt The current temperature value is displayed The infrared temperature sensor now works with this configured emissivity until it is changed again 11 Operating parameters When you reset adjust the operating parameters the instrument remains in run mode It continues to operate using the current parameter settings until you have finished configuring by pressing Enter 11 1 Setting parameters general information Select parameter Enter gt Press Enter to access the main Daw gt menu Select output function Enter CPD Press key V until the required output O ay gt op function is displayed Outi1O F AC Show parameter value Enter gt Press Enter DAS gt gt Current parameter value is dis played OutiO F C The infrared temperature sensor will display the parameter value for 30 sec After that the display will once again indicate the measurement as a percentage 4 Change parameter value Zem gt Press A or V and hold for 3 s m C E gt displays are first flashing then they are continuously lit Hold key A or V AE gt Numerical values scroll through eter The new value has been saved and will take effect Confirm parameter value See oun F C gt Press Enter Sar m 2S gt The display indicates the param OutlO F C 17 Adjust additional parameters gt Start again with step 2 Exit operating parameters layer gt Wait 30
16. ssary Dust can be removed by simply blowing it away or by using a soft brush special lens cleaning cloth is ideal but any soft clean lint free cloth will be Suitable If the lens is quite dirty use a very mild liquid detergent and rinse carefully with clear water while holding the device pointed down Apply as little pressure as pos sible to avoid scratching the lens 15 Shipping packaging and disposal 15 1 Transport Inspektion Unpack and inspect the entire shipment immediately upon receipt to make sure it is complete and undamaged If the container package shows visible signs of dam age please refuse the shipment If this is not possible accept the shipment on the condition that the freight carrier s delivery record is noted with the extent of the damage in order to file a claim Should you discover a concealed loss or damage report it to the shipper or freight carrier immediately If the period for filing claims has expired you will no longer be able to make any claims for compensation of damage or loss 25 15 2 Packaging The packages used are made of carefully selected environmentally compatible materials and are thus recyclable Please ensure that they are disposed of in an ecologically sound manner 16 Copyright The device software contains portions of the avr libc library Portions of avr libc are Copyright c 1999 2007 Keith Gudger Theodore A Roth Bjoern Haase Juergen Schilling Steinar Haugen P
17. tact measurements Measure the temperature with a contact thermocouple and measure the surface temperature with a pyrometer Adjust the emissivity coefficient on the pyrometer until both devices show the same temperature When measuring with the thermo couple make sure to have good thermal contact and low heat dissipation 22 Using a reference emissivity coefficient Apply matte black colour to a part of the surface to be measured This part has an emissivity of 94 At first measure the temperature of the coloured part Then make a comparative measurement right next to the coloured part and adjust the emissivity on the pyrometer until it displays the previous measurement reading again 13 1 Emissivity coefficient tables List of emissivity coefficients of different materials in Moder Twa000 8 Baking oven ter SS Bitumen ootngpape e Game f Skn numen f 23 Model TW2000 Sad 1809 Steel rusty 18 Cement Model TW2001 TW2011 TW2002 Asbestoscement Jeo 1 gt Iron heavily scaled 190 18 gt Iron rollingskn FH Graphite filed smooth 18 0 gt Copper oxidised o JI Nike 0 Porcelain gazed 180 160 gt 24 Model TW2001 TW2011 TW2002 Sot fH Ssa 180 18 gt Pottery glazed Jm 0 gt Bricks 18 90 ze 140 600 14 Maintenance 14 1 Cleaning the pyrometer lens A false temperature reading will be given when the lens Is dirty Therefore check the lens periodically and clean it if nece
18. urer s consent Please contact the Manufacturer if the need should arise 2 Safety This chapter outlines all important safety aspects to be considered for optimum employee protection and to ensure safe and reliable operations UK 2 1 Intended use The infrared temperature sensor is solely intended for use as described in this manual Operational safety can only be ensured when the instrument is used for its In tended purpose Jede The use of the infrared temperature sensor for any other purpose beyond what is specified in this manual is prohibited Using the instrument In any other manner will be considered as improper The Manufacturer Authorised Agent shall not be held liable for any dam ages or loss resulting from such unintended or improper use in this case the risk is solely borne by the user 2 2 User s responsiblity The infrared temperature sensor may only be used when it is in perfect working condition 2 3 Safety requirements The instrument operates at low voltage 10 34 V DC The power supply unit must conform to directive EN50178 SELV PELV 2 4 Electromagnetic Compatibility The instrument complies with the requirements of EC Directive 89 336 EEC changed by 91 263 EEC 92 31 EEC 93 68 EEC relating to radio interference suppression and electromagnetic compatibility European certification EN 61000 6 4 EN 61000 6 2 EN 61000 4 2 3 4 6 EN 55011 When connecting a power supply unit make sure that is also
19. used connect the diagnostics input Pin 5 to minus As an alternative use a 4 pole cable box where Pin 5 is not assigned 11 4 Damping function When the target object s temperature is erratic the damping function smoothens these temperature fluctuations in order to stabilize the measuring signal The UK JOD greater the time constant a mir the lower the effect of these fluctuations on the yielded temperature reading 1 Output signal without smoothing function 2 Output signal with smoothing function 11 5 Peak hold function It might often be desirable to determine the peak temperature during a defined time period for example when the objects to be measured move past the infrared temperature sensor resulting in temperature readings which would appear to be cyclical In this mode the displayed temperature reading will not drop between tar geted objects The peak temperature reading will be held for a preset time period The hold time F HL ai can be set at 100 300 and 500 msec The maximum temperature sampled during the defined hold time will be saved It makes sense to choose a hold time which is approximately 1 5 times as long as the cycle of the mov ing targets This avoids temperature drops Any changes are recognised at once A Measuring object in front of infrared temperature sensor Hold time second internal hold time Measuring readings with peak hold function Measuring readings without pea
20. vrvrvvvvrrvvnnnvvvvvrenvvnrvrvrenensrvsnvrevesesvssrvnnessrrsrvvessssrsvvvvene 10 6 Shielding and Grounding ccccecccsccsscseessscsesseccesseecseseeceesaecaesseeseseeeseseaees 11 6 1 Equipotential bonding cccccesccssssscsrscssscsrscsrscsescrscrscsesesseceesseeseeeean 11 7 Operating controls and display srrrvrrrvrrrvrrrvrrvrrrvrrsverrvernrernrervrrsversrrenrervrernen 12 O MONU ee i EE E E EE EAE E E EEEE EEE EN 13 8 1 Display of measurement reading ccccccesecsccssecssccsescesssesseecessesseestens 13 8 2 Main men 13 8 3 Advanced functions rrvrrvrrrrrrvvrernrvvrvnnnrrvrvrrersrensrrsvrersrsrenssrsreessrsrvneernvven 14 9 Menu explanation esvrrvrersvrerrvrvnrverrvrensnrenssrensvrensvressvevsrevsvressvrnesrevesrenssresennen 15 9 1 Main menu 15 0 2 Advanced functions 0 0 00 ceeeesescescsccceseeeeeecseeeeeeseueesceneeeesenseneseesneesentneesesaes 15 10 Setup 16 11 Operating parameters cccccesecssecssesseesseessescsesssesesesesescatsestsestscatecateseteentess 17 2 11 1 Setting parameters general mtormaton 17 11 2 Change between the menu layers nmmsmrarrrorrarerrrsvernrrsrernrernrrnrrrnrrnvennnn 18 11 3 Test function e nennensensenennsnnsnerenrsrrsrrnrrsrnnrnrrnrrsrasrnranrnrrnrrsrrsrnsrnnrnrrnresrens 18 11 4 Damping function r rorerorervrrsrrrnrorvrrrvrrsvrrsvrrnrervrrsvrrsvrrnrsrnrssvrrsvrrnvennrennen 19 11 5 Peak hold function erervrrnrervrrnre
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