FLUKE 80TK Instruction 电路图.pdf

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1、PN 735985 February 1985 Rev.6, 11/02 1985-2002 Fluke Corporation. All rights reserved. Printed in USA All product names are trademarks of their respective companies. Introduction The Fluke 80TK is a thermocouple converter for use with any K-type thermocouple and a digital multimeter. The 80TK accept

2、s the output of any K-type thermocouple and converts it to 1 millivolt per degree (Celsius or Fahrenheit). A three-position switch acts as a power switch as well as selecting Fahrenheit or Celsius scaling for the output. In addition, the OFF position of the power switch allows you to read the batter

3、y condition via the external multimeter. The thermocouple input accepts wire leads or standard mini- thermocouple connectors. Temperature is measured by exposing or attaching the thermocouple to the surface to be measured. The multimeter displays the temperature directly in degrees Fahrenheit or Cel

4、sius. Specifications Electrical Measurement Range: -50 to 1000 degrees Celsius -58 to 1832 degrees Fahrenheit Resolution: 2000 count display:0.1 C/F in 200 mV range 1.0 C/F in 2V range 3200 count display:0.1 C/F in 300 mV range 1.0 C/F in 3V range 4000 count display:0.1 C/F in 400mV range 1.0 C/F in

5、 4V range Note: Ignore decimal point on 2V, 3V, or 4V range. Maximum Voltage at Thermocouple Input: 60V DC, 24V AC RF Field: Exposure to an RF field interferes significantly with this modules capacity to accurately measure temperature with thermocouples. The interference is temporary and the module

6、suffers no harm when exposed to an RF field of 3 V/m. Accurate temperature measurement capability is completely restored when the module is removed from the RF field. Common sources of RF fields are handheld 2-way radios and cellular telephones. If such a source is suspected of interfering with this

7、 module, either turn off the transmitter or increase the separation between the transmitter and the module. Environmental Ambient Operating Range: 0 to 50C Storage Temperature: -40 to 60C -40 to 140F Humidity:0% to 90% (0 to 35C) 0% to 70% (35 to 50C) Basic Accuracy: ( 23 5C Calibration)* (Applies f

8、or one year after purchase or recalibration) RANGEACCURACY (% of reading + degrees), 1 year -20 to 350C0.5% 2C -4 to 662F0.5% 3.6F 351 to 500C1.75% 2C 664 to 932F*1.75% 3.6F 501 to 1000C2.0% 2C 933 to 1832F2.0% 3.6F -50 to -21C2.5% 2C typical -58 to -5.8F2.5% 3.6F typical Temperature Coefficient: *0

9、C to 18C and 28C to 50C ambient, multiply the basic accuracy specification by 0.1 for each degree above 28 or below 18. For accuracy enhancement between 351C to 500C, subtract 3 degrees from the reading. The accuracy is now 0.75% 2C. * For accuracy enhancement between 663F and 932F, subtract 5.4 deg

10、rees from the reading. The accuracy is now 0.75% 3.6F. Note The basic accuracy specification does not include the error of the probe or the DMM. Please refer to the probe accuracy specification for additional details. General Weight: 4.5 ounces, 126 grams Overall length: 4 5/8 inches, 11.75 mm Batte

11、ry: Standard 9V Battery (NEDA #1604, 6F22, 006P) Battery Life: 1600+ hours, 6.5V minimum Output: 3/4 inch spaced banana plugs, 10 megohm minimum load resistance Accessories 80PK-1 (included): Bead Probe 4 foot K-type thermocouple bead probe, with Teflon tape insulation. Maximum insulation temperatur

12、e: 260C. Accuracy: 2.2C or 0.75% (whichever is greater) from 0 to 800C. 80PK-2A: Immersion Probe (8 or 20.32 cm from tip to probe handle) 80PK-3A: Surface Probe (for flat or curved surfaces) 80PK-4A: Air Probe (protected by stainless steel baffle) 80PK-5A: Piercing Probe (suitable for food use, liqu

13、ids and gels) 80PK-6A: Exposed Junction Probe (exposed bead attached to 6 sheath) 80TK Thermocouple Module Instruction Sheet RadioFans.CN 收音机爱 好者资料库 . 80PK-7: Industrial Surface Probe 80PK-8 Pipe Clamp Probe (For pipe diameter 1/4” to 1 7/8”) 80CK-M: Male Mini-Connector (for attachment of K-type the

14、rmocouple wire) Use and Operation Thermocouples rely upon the difference in temperature between the measuring junction and a reference junction. Traditionally the reference junction is another thermocouple placed in an ice bath, however, the 80TK uses an electronic reference junction. The converter

15、(80TK) must be operated in a thermal environment consistent with its specifications. Measuring Technique Making accurate temperature readings using a thermocouple is a matter of identifying and minimizing the causes of error. The largest contributor to errors is the thermal interface between the mea

16、surement surface and the thermocouple. The next largest contributor is the temperature difference between the thermocouple probe and its environment. Here are some suggestions for improving the accuracy of your temperature measurements. Ensure that there is a good connection between the probe and th

17、e surface you are measuring. You can do this in many ways: 1. Increase the mounting pressure. 2. Use an interface agent (such as silicone grease) between the thermocouple probe and the surface you are measuring. 3. Use a thermal epoxy to attach the thermocouple. When measuring temperatures higher th

18、an ambient, adjust the connection of the probe to the surface until you get the highest temperature reading. Use any of the suggestions given above to do so. When measuring temperatures lower than ambient, adjust the connection of the probe to the surface until you get the lowest temperature reading

19、. Use any of the suggestions given above to do so. When measuring temperatures near ambient, make the reading when the multimeter display is most stable. Warning To avoid electrical shock, do not use this instrument when voltages exceeding 24V ac or 60V dc are present. The probe tip is electrically

20、connected to the output terminals. Temperature Measurement Follow this procedure to correctly use the 80TK. 1. Plug the 80TK into the multimeter. Ensure that the banana plug with the red dot above it plugs into the voltage input and the other plug is in the COM input. 2. Set the multimeter to the 20

21、0, 300, or 400 millivolt range. This setting will read temperatures equal to the number of millivolts the range has (i.e., 320C or F if the millivolt range reads 320 mV. 3. Use the dc volt setting and ignore the decimal for higher temperatures than can be accomodated by the millivolt range. Less res

22、olution is available when using the volt range. 4. Plug the thermocouple into the 80TK thermocouple input connector. If the thermocouple does not have a plug attached, connect the thermocouple wires to the thermocouple input screws inside the 80TK. The yellow coded wire (chromel) connects to the scr

23、ew marked ”+”. 5. Turn on the 80TK and the multimeter. 6. Adjust the thermal connection between the measurement surface and the thermocouple as described previously. 7. Read the temperature on the multimeter. Open Thermocouple Reading If the thermocouple probe has open circuited (i.e. is broken), th

24、e mulimeter will read a steady, constant voltage. The voltage readings are: RangeReading C 1.0V F 2.2V Battery Condition Test 1. Set the power switch to the OFF position. 2. Connect the 80TK to the multimeter. 3. Set the multimeter to the 200, 300, or 400 mV dc range. 4. Read the battery test voltag

25、e on the multimeter. A minimum reading of 75 mV is acceptable and indicates that approximately 100 hours of battery life remain. Battery Replacement Warning To avoid electrical shock, remove the thermocouple from the measurement surface, or disconnect the thermocouple from the instrument before open

26、ing the case. Totally reassemble the instrument before attempting to use it. 1. Set the power switch to the OFF position. 2. Disconnect the 80TK from the multimeter. 3. Unplug or disconnect the thermocouple. 4. Turn the 80TK so the power switch is facing down. Remove the single screw located between

27、 the banana plugs. 5. Grasp one case half in each hand. Pull the two halves apart, beginning at the end with the banana plugs. 6. Remove and replace the battery. 7. Reassemble the 80TK. 8. To reassemble, mate the two case halves at the end with the thermocouple connector, then hinge the two halves t

28、ogether. 80TK Self Test The following test is an easy way to verify proper operation of the 80TK: 1. Follow the Battery Replacement Procedure to open the case. 2. Using a short piece of bare wire, short the input thermocouple terminals together. 3. Plug the 80TK into the multimeter. 4. Turn the mult

29、imeter and the 80TK on. Set the multimeter to 200, 300, or 400 mV range. 5. The multimeter should read the ambient room temperature. RadioFans.CN 收音机爱 好者资料库 80TK Calibration Procedure A calibration cycle of 1 year is recommended to maintain the 80TK within specifications. The required equipment is l

30、isted below. Use Calibration Procedure 1 to calibrate the 80TK for use with any K-type thermocouple. Use Calibration Procedure 2 if the 80TK will be used exclusively with one K-type thermocouple. Always calibrate the Celsius function before calibrating the Fahrenheit function. Location of Calibratio

31、n Adjustments Calibration Procedure 1. Use this procedure to calibrate the 80TK: 1. Verify the condition of the battery as described above and replace the battery if necessary. Follow the Battery Replacement procedure to disassemble the 80TK, but do not remove the battery or reassemble the 80TK. 2.

32、Allow 80TK and the room-temperature water bath to stabilize at room temperature, away from drafts, for at least 30 minutes before proceeding with calibration. Place the reference thermometer into the room temperature water bath. Allow the reading to stabilize. 3. Use the shorting bar to short the 80

33、TK thermocouple input terminals. 4. Plug the 80TK into the dc volts input of the multimeter. Set the multimeter to the 300 mV or equivalent range. 5. Set the switch on the 80TK to CELSIUS position. Adjust R4 to half rotation, then adjust R5 until the reading on the multimeter matches the reading on

34、the mercury reference thermometer 5.0C. Now adjust R4 until the two readings are within 0.1C. Note If the mercury reference thermometer displays F, use the following conversion to get C: 5/9 (temp in F)-32 = (temp in C) 6. Set the switch on the 80TK to the FAHRENHEIT (center) position. 7. Adjust R16

35、 until the reading on the multimeter matches the reading on the mercury reference thermometer 0.2F. Note If the mercury reference thermometer displays C, use the following conversion to get F:9/5(temp in C) + 32 = (temp in F) 8. Set 80TK switch to the OFF position. Remove 80TK from multimeter and re

36、move any connections to the 80TK thermocouple input terminals. 9. Reassemble the 80TK. 10. The 80TK is now calibrated. Calibration Procedure 2. Use this procedure if the 80TK will be used exclusively with one K-type thermocouple: Perform Calibration Procedure 1. Substitute the following for step 3 i

37、n Calibration Procedure 1: 3. Connect the thermocouple to the 80TK thermocouple input, and place the thermocouple into the room temperature bath along with the mercury reference thermometer. Required Equipment Refer to Table 1 for equipment required to calibrate the 80TK. Table 1. Required Equipment

38、 InstrumentMinimum SpecificationRecommended Model Mercury Reference Thermometer0.1C resolutionPrinco Model SAMA-CP45 Dewar Flask and Cap(water bath)2 pint capacity, filled with waterThermos bottle Digital Voltmeter300 mV range, 100 V resolutionFluke Model 87 Series III Shorting bar OR K-type thermoc

39、ouple 1 ohm meets NBS standards(with subminiature K plug) Wire Fluke 80PK-1 To contact Fluke, call one of the following telephone numbers: USA: 1-888-99-FLUKE (1-888-993-5853)Japan: +81-3-3434-0181 Canada: 1-800-36-FLUKE (1-800-363-5853)Singapore: +65-738-5655 Europe: +31 402-675-200Anywhere in the

40、world: +1-425-446-5500 Or, visit Flukes Web site at . Fluke Corporation Fluke Europe B.V. P.O. Box 9090 P.O. Box 1186 Everett WA 98206-90905602 B.D. Eindhoven USAThe Netherlands RadioFans.CN 收音机爱 好者资料库 80TK-4012 80TK Schematic Diagram Replaceable Parts Ref DesPNDescription 735845CASE TOP 735852CASE

41、BOTTOM 735860COVER SWITCH 735944SHIELD, BOTTOM 735910SHIELD, TOP 735928SHIELD CONTACT 747501SCREW,SCREW,PH,PO,STL,4-40,.250 AR1802691IC,OP AMP,TLC271A,PROGRAMMABLE,LOW POWER,SO8 BT1696534BATTERY,PRIMARY ,BATTERY,9V,0-15MA C1 C2942529CAPACITOR,SMR,CAP,CER,0.1UF,+-10%,25V,X7R,0805 C3942552CAPACITOR,SM

42、R,CAP,TA,1UF,+-20%,20V,3216 C4650223CAPACITOR,SMR,CAP,TA,10UF,+-20%,10V,3216 CR1 CR4830489DIODE,BAS16,SMR,DIODE,SI,75V,250MA,SOT-23 CR2876529DIODE,BAT54,SMR,DIODE,SI,SCHOTTKY,30V,200MA,SOT-23 J1 J273599380TK-8008,CONTACT, THERMOCOUPLE MP11276793 80TK-3012,80TK - PCB SM_PIH P1 P273603380TK-8009,PLUG,

43、BANANA Q1 Q2 Q4742676NPN,MMBT3904,SMR,TRANSISTOR,SI,NPN,60V,350MW,SOT-23 Q3820902NPN,MMBT5089,SMR,TRANSISTOR,SI,NPN,30V,200MW,SOT-23 Q5 Q6820910PNP,MMBT5087,SMR,TRANSISTOR,SI,PNP,50V,225MW,SOT-23 R1802725RESISTOR,CERMET,22M,+-1%,0.1W,400PPM,0805,TAPE R10943006RESISTOR,CERMET,2.1K,+-1%,0.1W,100PPM,08

44、05,TAPE R11913731RESISTOR,SMR,RES,CERM,22.1K,+-1%,100PPM,1206 R12802675RESISTOR,SMR,RES,MF,18.2K,+-0.1%,0.1W,25PPM,0805 R13802683RESISTOR,SMR,RES,MF,22.1K,+-0.1%,0.1W,25PPM,0805 R14 R18867296RESISTOR,SMR,RES,CERM,698K,+-1%,.125W,100PPM,1206 R15802717RESISTOR,CERMET,1.82M,+-1%,0.1W,400PPM,0805 R16928

45、085RESISTOR,SMR,RES,VAR,CERM,200K,+-25% R17821447RESISTOR,SMR,RES,CERM,4.22K,+-1%,.125W,100PPM,1206 R19943659RESISTOR,CERMET,10M,+-1%,0.1W,400PPM,0805,TAPE R2 R20928866RESISTOR,SMR,RES,CERM,100K,+-1%,0.1W,100PPM,0805 R21928767RESISTOR,SMR,RES,CERM,4.99K,+-1%,0.1W,100PPM,0805 R22928754RESISTOR,SMR,RE

46、S,CERM,2.43K,+-1%,0.1W,100PPM,0805 R23806240RESISTOR,SMR,RES,CERM,1.2M,+-5%,.125W,200PPM,1206 R24802709RESISTOR,CERMET,4.12M,+-1%,0.1W,400PPM,0805 R3802659RESISTOR,SMR,RES,MF,750K,+-0.25%,0.1W,50PPM,0805 R4106937RESISTOR,SMR,RES,VAR,CERM,100,+-20%,0.25W R5802782RESISTOR,SMR,RES,VAR,CERM,1K,+-20%,0.2

47、5W R6927426RESISTOR,SMR,RES,CERM,182K,+-1%,.125W,100PPM,1206 R7876441RESISTOR,SMR,RES,CERM,604K,+-1%,.125W,100PPM,1206 R8802444RESISTOR,SMR,RES,MF,10K,+-0.1%,0.1W,50PPM,0805 R9802667RESISTOR,SMR,RES,MF,442K,+-0.1%,0.1W,25PPM,0805 S1740225SWITCH,SWITCH,SLIDE,DPTT VR1930065BIPOLAR 4040,SMR,IC,V REF,SH

48、UNT,2.5 V,1%,150 PPM,SOT23 LIMITED WARRANTY & LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs and services are warrante

49、d for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in Flukes opinion, has been misused, altered, neglected or damaged by accident or abnormal conditions of operation or handling. Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke does not warrant that software will be error free or operate without