User Manual
Contents
1. 1 and 2 are ASCII char LSB C3h C and 3 are ASCH char Real Tempurature Value Hex2Dec 12C3h 16 273 15 27 03 C Sum CheckSum 66h 12h C3h 3Bh Only Low Byte CR 0Dh gt Carriage Return means End of Message http www ZyTemp com REV 12 31 2013 NE ZyTemp TN9 Infrared Thermometer Module F ERT apse aca MM 4 2 3 How to modify the Emissivity How to write Emissivity into EEPROM Warning misuse may result in EEPROM failure this may destroy the calibration data The device may become useless 1 This Infrared Thermometer module is calibrated with Emissivity 0 95 defaultly Most of Non metal material has emissivity near to 0 95 But the infrared emissivity of normal metal is much lower and may have to modify the setting of the module for certain application 2 The communication format is the same as reading data from the module ItemCode HighByte LowByte CheckSum ItemCode HighByte LowByte CR total 40 clocks amp data Note the sign is not real data but only means following by 3 For writing Emissivity to TN9 the command is S 53h HighByte Emissivity value 04h CheckSum ItemCode HighByte 04h CR 0Dh Emissivity value HighByte hex 100 dec For example HighByte 5F hex 95 dec gt emissivity 95 dec 100 dec 0 95 dec Always keep the LowByte data 04 hex CheckSum value for this example 53 hex 5F hex 04 hex B6 hex 4 The trick for write data to2. External Drawing http www ZyTemp com REV 12 31 2013 NE TN9 Infrared Thermometer Module Zy Temp A now way to measure temperature 4 Serial Output 4 1 Typical Diagram Clock Data GND RS 232 or other Fig 6 Typical Diagram TN9 to TTL Interface MCU V Vce D Data C Clock 2KHz G GND A ActionKey When Pull Low the device will measure Tbb continuousely Note Data Pin is High when there is no data out Time Out gt 2ms http www ZyTemp com REV 12 31 2013 NE ZyTemp TN9 Infrared Thermometer Module Paoli e MM 4 2 Timing of SPI CLOCK DATA Byte 1 Message format cocoa gt 0 1 sec Fig 7 Timing of SPI http www ZyTemp com REV 12 31 2013 NE ZyTemp TN9 Infrared Thermometer Module po lia A i MM 4 2 1 Format of Message MIE Item L 4Ch Tobj Temperature of Obj f 66h Tamb Ambient Temperature MSB 8 bit Data Msb LSB 8 bit Data Lsb Sum Item MSB LSB SUM CR 0Dh End of the message 4 2 2 Example 1 Object Tempurature Tbb Item 4Ch gt L the item code of Object tempurature Data MSB 14h 1 and 4 are ASCII char LSB 2Ah 2 and A are ASCII char Real Tempurature Value Hex2Dec 142Ah 16 273 15 49 475 C Sum CheckSum 4Ch 14h 2Ah 8AH Only Low Byte CR 0Dh gt Carriage Return means End of Message 2 Ambiant Tempurature Tamb Item 66h gt f the item code of Ambient tempurature Data MSB 12h
3. TN9 Infrared Thermometer Module ZyTemp l 5 Interface Demo Board Hub D General Description Hub D is an Interface box with LCD for TN series This Box can work as an interface between the IRTm IRT Module and PC see Fig A Hub_D has a 2 column character type LCD Display it can also work without the PC The Hub will show Tobj amp Tamb data from the IRTm continuously IRT module TNO TN9 Interface Demo Board Hub PC running a program Tbb 99 6C wee Tamb 19 8C Data Power 5V Clock GND Power Hub Reset IRTmReset Action Action E E Fig 8 Typical Application of Hub Model No Hub D Program TNmDB001 exe Fig 9 Hub D http www ZyTemp com REV 12 31 2013 NN ZyTemp TN9 Infrared Thermometer Module PRE lia DEL ZS 6 Interface Program for PC Program TNMDB001 exe a Free version for demostration can be download at http www zytemp com download default asp Running under a DOS window in MS Windows environment Must be used accompanied with HUB D e This program will show Tbb Tobj Tamb in degC degF continuously Status of IRT e Modification of the Emissivity e degC degF unit change http www ZyTemp com REV 12 31 2013 NE
4. a critical component in the proper handling of infrared measurements Concisely emissivity is the ratio of radiation emitted by a surface or blackbody and its theoretical radiation predicted from Planck s law A material s surface emissivity is measured by the amount of energy emitted when the surface is directly observed There are many variables that affect a specific object s emissivity such as the wavelength of interest field of view the geometric shape of the blackbody and temperature However for the purposes and applications of the infrared thermometer user a comprehensive table showing the emissivity at corresponding temperatures of various surfaces and objects is displayed Please visit ZyTemp s website http www zytemp com tutorial emissivity asp to check the emissivity of the materials of interested http www ZyTemp com REV 12 31 2013 NN ZyTemp A now way to measure temperature TN9 Infrared Thermometer Module MM 3 Specification 3 1 Absolute Maximum Rating DC Supply Voltage lt 7 0V 0 5V to V 0 5V Note Stresses beyond those given in the Absolute Maximum Rating table may cause operational errors or damage to the device For normal operational conditions see AC DC Electrical Characteristics Input Voltage Range 3 2 DC Characteristics VDD 3 0V Ta 25 C Operating Voltage Operating Current mA F opp 600KHz Standby Current uA VDD 3 0V
5. Input High Level Vin 2 0 V VDD 3 0V Input Low Level Vit 0 8 V VDD 3 0V Output High I lou 2 0 mA VDD 3 0V Voy 2 4V Output Sink I lon 25 mA VDD 3 0V Voy 0 8V Operating Voltage VDD 4 5V Fo 600KHz CPU Operating Current Standby Current VDD 4 5V Input High Level VDD 4 5V Input Low Level VDD 4 5V VDD 4 5V Voy 3 5V VDD 4 5V Vo 0 8V Output High I Output Sink I http www ZyTemp com REV 12 31 2013 NN TN9 Infrared Thermometer Module ZyTemp A now way to measure temperature MM 3 3 Measurement Specification 33 350 27 662 F 10 50 C 14 122 0 6 C above 0 C 2 2 C whichever is greater 2 0 05 C C 1 16 C F 0 0625 full range 1sec 5 1 0 95 default 0 01 1 step 01 1 4Hz 14 6x13 5x50mm 5um 14um 5 9g 3V or 5V Option http www ZyTemp com REV 12 31 2013 NE ZyTemp TN9 Infrared Thermometer Module y PEEL lia DE R MM 3 4 Pin Assignment of TNO TN9 Warning The Dimension in this drawing is for reference only For actual dimension please download from http www ZyTemp com products download ExtDrawing asp V Vdd G GND D Data Serial Data C Clock Serial Clock A Action Pin pull low to measure floating while to Write Data into the IRT Note TNO TN9 has the same pin assignment Fig 5 the Module
6. NO seorcoiisiarideca see Eta EEE tesa 3 asaedscedesaessessiestdetiadnsdaccccdedeavedesGoasaevdsetveseesescdessdanseeedcescsveedee 10 GESI H id EN Be OU PRU WD AAA ENE OE O O EE E E E E EE 11 4 1 TYPICALIDIAGRAM nit a a e a aaa a E EEE a aa enaa E SESA 11 4 2 TIMING OF SPI 63 sccs e siceee es otee ia EEEa EEEE AEEA E EEE EE EEEE ERRELE EEE EE ERO REEE EEE Rai 12 4 2 1 Formato Message nica a e dents ods E aE E A e dicte 13 ALD EXAM le ssceesae cise O A tea tesacudteeaasaevsageansesduvdausastesedeaseeedvssugcatdeasdcauuesu EE E ORE RRE 13 4 2 3 How to modify Emissivity How to write Emissivity into EEPROM oonnnoninninnninnnnnncnnncnncnnncnn nora nonn crac cnn cnn nono 14 5 INTERFACE DEMO BOARD HUB D 001 scsssssccsssssccesssccscssscccsessscccsssscccessceccessscaccessecsscssscecscscescsssacccesscsccesssceccess 15 6 INTERFACE PROGRAM FOR PC wissccsdesssccsssssecsscnascssscnecescectssdendeccsesesscessoscessscsascsedsnosesssssesssedecssseeneesecsedeessenesescactesoess 16 http www ZyTemp com REV 12 31 2013 NE ZyTemp TN9 Infrared Thermometer Module PRE lia a SSS 1 General Description This document describes the user guide of TNm Series TN0 TN9 Edition July 2006 Copyright All right reserved Reproduction in any manner in whole or in part is straightly prohibited without written permission of ZyTem com This information contained in this document is subject to change without notice Limited Warranty This data sheet contai
7. TN9 is as below a Action pin need to be floating while writing data to TN9 b As you know TN9 will do routine data out by 40 clocks amp datas with communication format After the 40th clock TN9 will pull the CLK amp DATA pin to weak high for waiting if there is External CPU want write data to TN9 Please let External CPU start send 1st clock within the timing T1 after the 40th clock Sms lt Tl lt 10ms c The frequency of CLK should be 2KHz d TN9 will latch the data at negative edge of CLK so data should be ready before the negative edge of Ist writing clock 5 For example Emissivity 0 95 gt S 5F hex 04 hex B6 hex CR Emissivity 0 80 gt S 50 hex 04 hex A7 hex CR 6 Finally how do we know write emmissivity success About 5 ms after you send CLK amp DATA to TN9 completely TN9 should have 3 kinds of response a TN9 will send out the same data which External CPU had written to TN9 We call this ECHO That means write emmissivity success b TN9 will send out S FF hex FF hex CheckSum S FF FF CR That means TN9 find data checksum error a wrong data receiving TN9 will forget the data and you need to re write again c TN9 have no response as above That means TN9 don t get full 40 clocks Please check the clock amp data which control by External CPU Especially please make sure the T1 timing is right http www ZyTemp com REV 12 31 2013 NN
8. TN905 05F Infrared Thermometer Module User Manual ZyTemp A new way to measure temperature ZyTemp TN9 Infrared Thermometer Module palta ca Contents 1 GENERAL DESCRIPTION ivicscccssscssccssssscecsconssessstecessscecsseessccscssdcoosensessococesseadssescnascssseossesenetesoosseecseesseccssondseescedeseseucdecesss 3 EDITION SUEY 2000 icono yicceseeadcavesdenctees cs decev sue aci REEE AE AAE ER EE E Gaia Elina 3 2 THRORY OF OPERATION lt lt scsscescctivevscccssetesvccssssdacencessssssvesssceesastes eunscocasddcsvsseuaccessstusesstacesessasessssesncbestestesvenacecescnveseenss 4 2 1 PRINCIPLES OF OPERATION csssessscccccecssssececececsessnuececececseseseaecececsessaeaecececseseaaecececsesensaaeceeeeeesessaaeeeeececsensaeeeeeceeeeenes 4 2 2 FEATURES OF DESIGN 661355500 scdes8 210005 case Foes EAEE E E E NALA EA Gaieuasbses adelaida da dates 5 2 3 ETELD OF VIE Worst al adan boda 6 2 ALEMISSIVID Y cacon anat EE E E E E Gonceasw4s E A E 7 J SPECIFICATION AAA 5 E co ssstuccvssebucdssstouesutessescbsatsosesudodessnsedesesteseeescesoveeses 8 3 1 ABSOLUTE MAXIMUM RATING ccccecsessscccececeessseceeececseseauececececsensaaesesececeesesueaeseeecsenesseaeseeecscsessaaeseescecsenssaeeeeceeceaaaeaes 8 32 DC CHARACTERISTICS ni eine A EA EEEE AEE n iis 8 3 3 MEASUREMENT SPECIFICATION ccccessessscecececsesssscecececseseececececseseaesecececeesesuesesecececeessaeseecceesesaaeseeececsesesaeseeeeeesensaeaes 9 3 4 PIN ASSIGNMENT OF TNO T
9. egC requiring up to 30 minutes to stabilize while ZyTemp s TNm error differential is only 0 7degC needing only 7 minutes to restabilize e TNm products operate from a 3 Volt power supply while many other older IRTs still require a 9 Volt supply e ZyTemp has maintained a NIST or National Measurement Laboratory traceable Temperature Primary Standard All the TNm products are calibrated under traceable infrared standard sources The calibration data and serial number are saved in a EEPROM on the module http www ZyTemp com REV 12 31 2013 NE ZyTemp TN9 Infrared Thermometer Module PRE lia e SSA 2 3 Field of View What is D S 5 1 This device has a D S 5 1 Distance Spot 5 1 SpotSize 2 Distance 10 Fig 2 Field of View When the Distance is 10 inch then the measurement spot size is 2 inch When the Distance is 20 inch then the measurement spot size is 4 inch In other words the FOV Field of View is 4 8 x 2 9 6 degree Beware the Vignette Good Design No Vignette lt i Fig 3 Good Design Field of View http www ZyTemp com REV 12 31 2013 NN ZyTemp TN9 Infrared Thermometer Module Paoli e Bad Design Vignette The Sensor see the edge of the housing So the measurement in fact is the averaging of the real target and the edge of housing 5 TIAS yey 2 4 Emissivity Understanding an object s emissivity or its characteristic radiance is
10. ns information specific to products manufactured at the time of its publication Contents herein do not constitute a warranty Trademark Acknowledgements All trademarks are the property of their respective owners http www ZyTemp com REV 12 31 2013 NE ZyTemp TN9 Infrared Thermometer Module PEE li ale MM 2 Theory of Operation 2 1 Principles of Operation 10t 10 1 10 10 10 10 10 10 Wael ength TT TT ETA AT Meers A ag oe s E A Radio TV Micro Infrared Ultraviolet X rays Y rays Cosmic Waves Waves Waves radiation radiation 2 Frequency eee AAA A AAA 1 Seconds f 3X 10 3xX 107 rays 2 16 v ax 3x10 3x10 3x10 3x10 3x109 Red Orange Y llow Green Blue violet dd E Pez 14 1 6x10 s Fig 1 the Infrared Radiation Spectreum Infrared just like any light ray is an Electromagnetic Radiation with lower frequency or longer wavelength than visual light Anything above absolute zero 273 15 degrees Celsius or 0 degrees Kelvin radiates in the infrared Even ice cube snow your refrigerator emit infrared The Stefan Boltzmann Law where the total radiation energy is proportional to the fourth power of the absolute temperature and Wien Displacement Law the product of the peak wavelength and the temperature is found to be a constant are implemented in the TNm infrared thermometer module The infrared radiation of measure target is collected by a infrared mirror through a IR filter of 5 o
11. r 8um cut in frequency to the infrared thermopile detector The detector signal will be amplified and digitalize by the low noise and high linearity OP and AD convertor The ambient temperature sensor usually included in the same package as the thermopile detector is set in the space near the optical system to detect the fast change of the ambient temperature The signal processing section receives the signals from these temperature sensors to calculate the target surface temperature by a mathematical algorithm http www ZyTemp com REV 12 31 2013 NE ZyTemp TN9 Infrared Thermometer Module Paoli e SS 2 2 Features of Design The TNm infrared thermometer module is specially designed for a high sensitivity high accuracy low noise and low power consumption A number of design features contribute to the performance MEMS thermopile detector and a high accurate ambient temperature compensation technics care used for the TNm infrared thermometer module ZyTemp has developed a proprietary Infrared System On Chip device that integrates all hardware items onto one IC Using this innovative SoC technology TNm infrared thermometer module has become a highly affordable and compact product e ZyTemp s products can faithfully withstand a thermal shock of 10degC 18degF Our products are adept in maintaining accuracies under widely changing environmental conditions For example the errors from environmental changes of older IRTs can reach 1 6d
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