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Summary of Contents for ZyTemp TN905-05F
- Page 1 TN905-05F Infrared Thermometer Module User Manual...
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Page 2: Table Of Contents
IAGRAM 4.2 T SPI ................................12 IMING OF 4.2.1 Format of Message ...............................13 4.2.2 Example ................................13 4.2.3 How to modify Emissivity? (How to write Emissivity into EEPROM)..............14 5 INTERFACE DEMO BOARD: HUB-D.........................15 6 INTERFACE PROGRAM FOR PC ..........................16 http://www.ZyTemp.com REV. 07/20/2004... -
Page 3: General Description
Limited Warranty: This data sheet contains 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. 07/20/2004... -
Page 4: Theory Of Operation
) 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. 07/20/2004... -
Page 5: Features Of Design
For example, the errors from environmental changes of older IRTs can reach 1.6degC, requiring up to 30 minutes to stabilize, while ZyTemp's TNm error differential is only 0.7degC, needing only 7 minutes to restabilize. -
Page 6: Field Of View
When the Distance is 20 inch, then the measurement spot size is inch. In other words, the FOV(Field of View) is 4.8 x 2 = 9.6 degree Beware the Vignette Good Design, No Vignette Fig 3. Good Design Field of View http://www.ZyTemp.com REV. 07/20/2004... -
Page 7: Emissivity
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... -
Page 8: Specification
VDD = 4.5V STBY Input High Level μA VDD = 4.5V Input Low Level μA VDD = 4.5V VDD = 4.5V, V = 3.5V Output High I -2.0 VDD = 4.5V, V = 0.8V Output Sink I http://www.ZyTemp.com REV. 07/20/2004... -
Page 9: Measurement Specification
Accuracy Tobj=15~35°C, Tamb=25°C +/-0.6°C Full Range Accuracy, Tamb=23+/-3°C +/-2%, 2°C Resolution 1/16°C=0.0625 (full range) Response Time (90%) 1sec Emissivity 0.95 default, 0.01~1 step.01 Update Frequency 1.4Hz Dimension 14.6x13.5x40.58mm Wave Length 5um-14um Weight 5.9g Power Supply 3V or 5V Option http://www.ZyTemp.com REV. 07/20/2004... -
Page 10: Pin Assignment Of Tn0; Tn9
TN9 Infrared Thermometer Module 3.4 Pin Assignment of TN0; 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: TN0;... -
Page 11: Serial Output
Fig 6. Typical Diagram TN9 to TTL Interface (MCU) V:Vcc 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 > 2ms http://www.ZyTemp.com REV. 07/20/2004... -
Page 12: Timing Of Spi
TN9 Infrared Thermometer Module 4.2 Timing of SPI CLOCK DATA 500us Byte 0 Byte 1 Message format Item MSB LSB Sum CR DATA DATA 20ms > 0.1 sec Fig 7. Timing of SPI http://www.ZyTemp.com REV. 07/20/2004... -
Page 13: Format Of Message
66h “f” the item code of Ambient tempurature Item 12h ( “1” and “2” are ASCII char) Data C3h ( “C” and “3” are ASCII char) Real Tempurature Value [Hex2Dec(12C3h)]/16-273.15= 27.03 ℃ CheckSum 66h+12h+C3h=3Bh (Only Low Byte) 0Dh ’Carriage Return’ means End of Message http://www.ZyTemp.com REV. 07/20/2004... -
Page 14: How To Modify Emissivity? (How To Write Emissivity Into Eeprom)
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 & data which control by External CPU. Especially, please make sure the T1 timing is right. http://www.ZyTemp.com REV. 07/20/2004... -
Page 15: Interface Demo Board: Hub-D
PC running a (TN0; TN9) Interface Demo Board (Hub) program Tbb= 99.6C Tamb= 19.8C Data Power +5V Clock Power Hub Reset IRTm Reset Action Action Fig 8. Typical Application of Hub Model No:Hub-D Program: TNmDB001.exe Fig 9. Hub-D http://www.ZyTemp.com REV. 07/20/2004... -
Page 16: Interface Program For Pc
TN9 Infrared Thermometer Module 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 This program will show: Tbb (Tobj) ;...
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