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RayTek MARATHON FA, Руководство по эксплуатации

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Accessories

 

Marathon

 

Series

 

FA/FR

 

37

 

8.5

 

RS232/485

 

Interface

 

Converter

 

The

 

RS232/485

 

interface

 

converters

 

have

 

built

‐

in

 

smart

 

switching

 

and

 

have

 

been

 

designed

 

to

 

be

 

fast,

 

allowing

 

for

 

use

 

in

 

either

 

2

‐

wire

 

or

 

4

‐

wire

 

mode,

 

in

 

either

 

multi

‐

drop

 

or

 

stand

‐

alone

 

mode.

 

The

 

RS232/485

 

interface

 

converter

 

is

 

required

 

for

 

multi

‐

drop

 

communications.

 

 

Do

 

not

 

use

 

other

 

commercially

 

available

 

converters,

 

they

 

do

 

not

 

have

 

the

 

necessary

 

features!

 

Order number 

Model 

XXX485CVT 

25 pin to terminal strip interface converter, recommended for direct 

wiring between a serial interface and the terminal block 

XXX485CVT1 

XXX485CVT with 110 VAC power adapter 

XXX485CVT2 

XXX485CVT with 230 VAC power adapter 

XXX485CV 

25 pin to 25 pin interface converter 

XXX485CV1 

XXX485CV with 110 VAC power adapter 

XXX485CV2 

XXX485CV with 230 VAC power adapter 

Table

 

4:

 

Available

 

RS232/485

 

Interface

 

Converters

 

For

 

more

 

information

 

regarding

 

the

 

wiring

 

of

 

the

 

RS232/485

 

interface

 

converter,

 

see

 

section

 

5.6

 

RS232/485

 

Interface

 

Converter

 

on

 

page

 

21

 

and

 

section

 

5.7

 

Connecting

 

to

 

a

 

PC

 

on

 

page

 

21.

 

Содержание MARATHON FA

Страница 1: ...MARATHON FA FR Series 1 Color Fiber Optic Thermometer 2 Color Fiber Optic Thermometer Operating Instructions Rev G 01 2010 53001 ...

Страница 2: ......

Страница 3: ...630 800 ukinfo raytek com Fluke Service Center Beijing China Tel 86 10 6438 691 Tel 86 10 4008103435 Service info raytek com cn Internet http www raytek com Thank you for purchasing this Raytek product Register today at www raytek com register to receive the latest updates enhancements and software upgrades Raytek Corporation Raytek and the Raytek Logo are registered trademarks of Raytek Corporati...

Страница 4: ...OR CONSEQUENTIAL DAMAGES WHETHER IN CONTRACT TORT OR OTHERWISE SOFTWARE WARRANTY The manufacturer does not warrant that the software described herein will function properly in every hardware and software environment This software may not work in combination with modified or emulated versions of Windows operating environments memory resident software less than 100 compatible DOS compatible systems ...

Страница 5: ...5 2 1 Standard Focus 11 3 5 2 2 Close Focus 12 3 6 SCOPE OF DELIVERY 12 4 SENSOR LOCATION 13 4 1 AMBIENT TEMPERATURE 13 4 2 ATMOSPHERIC QUALITY 13 4 3 ELECTRICAL INTERFERENCE 13 4 4 DISTANCE TO OBJECT 13 4 5 SENSOR PLACEMENT 1 COLOR MODE 14 4 6 SENSOR PLACEMENT 2 COLOR MODE 14 4 7 VIEWING ANGLES 15 5 INSTALLATION 17 5 1 MOUNTING THE SENSOR 17 5 2 AIMING 18 5 3 FIBER OPTIC CABLE 18 5 4 INSTALLING T...

Страница 6: ...ES 34 8 1 OVERVIEW 34 8 2 AIR PURGE COLLAR 35 8 3 PROTECTION TUBE 35 8 4 FITTING SYSTEM 36 8 5 RS232 485 INTERFACE CONVERTER 37 8 6 INDUSTRIAL POWER SUPPLY 38 9 PROGRAMMING GUIDE 39 9 1 REMOTE VERSUS MANUAL CONSIDERATIONS 39 9 2 COMMAND STRUCTURE 39 9 3 TRANSFER MODES 40 9 3 1 Poll Mode 40 9 3 2 Burst Mode 40 9 4 RESPONSE TIME IN SETUP MODE 41 9 5 COMMAND LIST 42 9 6 COMMAND EXAMPLES 44 10 MAINTEN...

Страница 7: ...ic Cable to the Electronics Housing 51 10 4 3 Fiber Calibration 52 11 APPENDIX 54 11 1 DETERMINATION OF EMISSIVITY 54 11 2 TYPICAL EMISSIVITY VALUES 54 11 3 TYPICAL SLOPES 56 11 4 SIGNAL REDUCTION FR MODELS 57 11 5 ATTENUATION INFLUENCE ON ACCURACY 58 11 6 TRACEABILITY OF INSTRUMENT CALIBRATION 59 ...

Страница 8: ......

Страница 9: ...ce with the operating instructions is necessary to ensure the expected results Unacceptable Operation The instrument should not be used for medical diagnosis Replacement Parts and Accessories Use only original parts and accessories approved by the manufacturer The use of other products can compromise the operation safety and functionality of the instrument Instrument Disposal Disposal of old instr...

Страница 10: ...d on targets that do not completely fill the measurement spot provided the background is much cooler than the target Each model operates as a temperature measurement subsystem consisting of optical elements spectral filters detector and digital electronics All components are water tight NEMA 4 IEC 529 IP 65 rated and are built to operate on a 100 percent duty cycle in industrial environments Simul...

Страница 11: ... readings 2 1 2 Targets Smaller Than Field of View When a target is not large enough to fill the field of view or if the target is moving within the field of view radiated energies are equally reduced but the ratio of the energies is unaffected and measured temperatures remain accurate This remains true as long as the background temperature is much lower than the target s The following examples sh...

Страница 12: ...tability 1 C Temperature Resolution Current Output 0 05 C 0 01 C for FA1G Display and RS485 1 C Response Time 10 msec 95 selectable to 10 sec Temperature Coefficient 0 03 full scale change per 1 C change in ambient temperature Noise Equivalent Temp NET 1 C peak to peak at target emissivity of 1 00 Emissivity 0 10 to 1 00 in 0 01 increments Signal Processing Peak Hold valley hold averaging Hold tim...

Страница 13: ...ements 300 0 sec holds with external trigger 3 2 General Specifications Display 7 segment LED display individual LED s indicate modes Environmental Rating NEMA 4 IEC 529 IP 65 rated with conduit adapter and compression fitting which prevents liquid from entering through the connector Ambient Temperature Head Fiber Cable 0 to 200 C 32 F to 360 F Electronics Housing 0 to 60 C 32 F to 140 F with cool...

Страница 14: ...0 V Outputs Analog 0 20 mA 4 20 mA 16 bit resolution max current loop impedance 500 Ω Digital RS485 networkable to 32 sensors Baud rate 300 1200 2400 9600 19200 38400 default Adjustable baud rate only available through 2 way RS485 Data format 8 bit no parity 1 stop bit Software selectable 4 wire full duplex non multidrop point to point or 2 wire half duplex multidrop Relay Contacts max 48 V 300 mA...

Страница 15: ...ensions of Optical Head FA Models Figure 3 Dimensions of Optical Head FR Models Figure 4 Dimensions of Electronics Housing Fiber Optic Cable min bend radius Fiber Optic Cable min bend radius Mounting hole 5 mm 0 188 Max fastener head 8 mm 0 31 Hole diameter 21 mm 0 83 ...

Страница 16: ...Technical Data 8 Marathon Series FA FR Figure 5 Adjustable Mounting Bracket for Optical Head ...

Страница 17: ...ents make sure the target completely fills the measurement spot 3 5 1 FA Models 3 5 1 1 Standard Focus Figure 6 Standard Focus Spot Size Charts for FA models Spot S mm Distancse D to Object mm D S 20 1 at focus point Spot S mm Distance D to Object mm D S 100 1 at focus point FA1B FA1C FA1G SF Spot S mm Distance D to Object mm D S 40 1 at focus point FA2B SF Spot S inch Spot S inch Spot S inch inch...

Страница 18: ...D S 20 1 at focus point FA1A FA2A CF1 Spot S mm Distance D to Object mm D S 100 1 at focus point FA1B FA1C CF1 Spot S mm Distance D to Object mm D S 100 1 at focus point FA1B FA1C CF2 Spot S mm Distance D to Object mm D S 40 1 at focus point FA2B CF1 Spot S mm Distance D to Object mm D S 40 1 at focus point FA2B CF2 Spot S inch Spot S inch Spot S inch Spot S inch Spot S inch Spot S inch inch inch ...

Страница 19: ...andard Focus Spot Size Charts for FR models Distance D to Object mm D S 40 1 at focus point Distance D to Object mm D S 20 1 at focus point Spot S mm Spot S mm Spot S mm Distance D to Object mm D S 65 1 at focus point FR1A SF FR1B SF FR1C SF Spot S inch Spot S inch Spot S inch inch inch inch ...

Страница 20: ...ance D to Object mm D S 20 1 at focus point FR1A CF1 Spot S mm Distance D to Object mm D S 20 1 at focus point FR1A CF2 Spot S mm Distance D to Object mm D S 40 1 at focus point FR1B CF1 Spot S mm Distance D to Object mm D S 40 1 at focus point FR1B CF2 Spot S mm Distance D to Object mm D S 65 1 at focus point FR1C CF1 Spot S mm Distance D to Object mm D S 65 1 at focus point FR1C CF2 Spot S inch ...

Страница 21: ...red energy to measure accurately and the instrument will indicate a failure It is good practice to always keep the lens clean The Air Purge Collar helps keep contaminants from building up on the lens If you use air purging make sure an air supply with the correct air pressure is installed before proceeding with the sensor installation 4 3 Electrical Interference To minimize electrical or electroma...

Страница 22: ...s the target completely fills the field of view The following figure illustrates proper placement when using the one color mode Figure 10 Proper Sensor Placement in 1 Color Mode 4 6 Sensor Placement 2 Color Mode The following figure shows head placement under various conditions where two color temperature measurements can be taken Note however that if the sensor signal is reduced more than 95 incl...

Страница 23: ...from the target up to 30 for one color mode or 45 for two color mode Emitted energy Emitted energy Emitted energy Emitted energy Sighting hole smaller than the sensor s field of view Dirty lens or dirty sighting window Smoke steam dust gas in atmosphere Target smaller than field of view and or moves or vibrates in and out of field of view e g wire ...

Страница 24: ...n Series FA FR Figure 12 Acceptable Sensor Viewing Angles Best 90 to target Good 1 Color Mode 30 to 90 to target 2 Color Mode 45 to 90 to target Bad 1 Color Mode 0 to 30 to target 2 Color Mode 0 to 45 to target Acceptable Angles ...

Страница 25: ...through and around any obstacles such as beams walls support columns etc or if your installation requires through conduit before attaching the end to the electronics enclosure Do not attach until you aim the optical head The cable can be disconnected from the electronics box for aiming or threading through conduit during installation The cable is keyed and can only be inserted one way into the ele...

Страница 26: ...ations The fiber optic cable has a small bend radius 36 mm 1 5 in minimum and can be snaked around and through machinery walls and other obstacles If the cable needs to be changed it is field replaceable A calibration program for replaced fiber cables is included with your sensor Longer fiber optic cables allow the electronics enclosure to be well away from hostile environments The fiber optic cab...

Страница 27: ...ed SHIELD bare Also connect the earth ground to the SHIELD bare terminal The following figure shows how to configure the drain wires of both 4 and 12 wire cables before connecting to the sensor and RS485 RS232 converter Figure 14 Configuring the Sensor Cable The complete wiring must have only one common earth ground point Cables can be run to the electronics enclosure through conduit or fastened u...

Страница 28: ...he fiber optics cable hand tighten the compression fitting around the cable and then use a wrench to tighten another 1 1 2 to 2 turns If the cable is too thin then it may be necessary to add a bushing or heat shrink material to increase the cable diameter in order to ensure sealing Hand tighten the compression fitting around the cable and then use a wrench to tighten another 1 to 2 turns 4 wire ca...

Страница 29: ...r either directly or with an appropriate serial cable available from computer supply stores If your computer has a 9 pin serial connector use the supplied 25 pin to 9 pin cable between the interface converter or cable and the computer For appropriate interface converters see section 8 5 RS232 485 Interface Converter on page 37 Figure 17 RS232 485 Interface Converter with pins left XXX485CV or term...

Страница 30: ...s before applying power to the FA FR sensor Do not change RS485 or power connections on the RS485 RS232 converter while the FA FR sensor has power applied as this may cause damage to the Interface converter 5 7 1 Multidrop Installation 4 Wire In 4 wire multidrop installations the data can be transferred in both directions from sensor to PC and reverse Figure 18 Wiring for 4 Wire Sensor Setup 5 7 2...

Страница 31: ...correctly Figure 20 Connections from Sensor to Computer with the Terminal Block To Computer RS232 serial port RS232 485 Interface Converter XXX485CV XXX485CVT Terminal Block for cable extension Electronics Housing 9 VDC power supply or 24 VDC power supply From electronics housing or another sensing head To Computer RS232 serial port RS232 485 Interface Converter XXX485CVT Electronics Housing 9 VDC...

Страница 32: ... addressing of a sensor can be done by means of the Multidrop Software Menu Sensor Setup that came with your sensor As alternative the specific interface commands of the sensor can be used in conjunction with a standard terminal program e g Windows HyperTerminal see section 9 5 Command List p 42 If you are installing two or more sensors in a multi drop configuration please be aware of the followin...

Страница 33: ...a computer The panel is used primarily for setting up the instrument The buttons and LEDs are defined in the following sections Allow the electronics to warm up for 15 minutes before making control panel adjustments Figure 22 Control Panel for FA Model Figure 23 Control Panel for FR Model C F S Є PKH AVG 2C 1C C F MODE 2C 1C Temperature Unit Indicator C or F E Slope Emissivity Peak Hold Averaging ...

Страница 34: ...ing the mode selector button will change the figures on the display to the current setting for each particular mode The following figure illustrates the sequence of operation for the mode selector button when in current temperature mode Figure 24 Mode Selector Button Sequence FA Models Display current temperature Switches between C and F Display Change emissivity default 1 00 Raises and lowers emi...

Страница 35: ... 00 The emissivity is preset at 1 00 For information on determining an unknown emissivity and for sample emissivities refer to section 11 1 Determination of Emissivity and 11 2 Typical Emissivity Values p 54f To change the unit s emissivity setting complete the following 1 Make sure the 1C LED is lit 2 Press the Mode button until the Є LED is lit The current emissivity value shows on the display 3...

Страница 36: ...til the PKH LED is lit 2 Press thec button to both set and activate The display reads in 0 1 seconds Set Peak Hold from 0 1 to 299 9 seconds If Peak Hold is set to 300 0 seconds a hardware reset is needed to trigger another reading If Peak Hold is set to 0 0 seconds the function is deactivated 3 Press the Mode button until the C or F LED is lit If Peak Hold has been activated the Peak LED will sta...

Страница 37: ...ld for the duration of Hold Time Function and setting for valley hold corresponds to the already described Peak Hold function see section 6 2 5 Peak Hold PKH p 28 The Valley Hold function is not available for 2 color units 6 2 8 Overview to Hold Functions The following table lists the various Hold functions along with their resets and timing values Use this table as a guide for programming your se...

Страница 38: ...type Holds indefinitely or until triggered Function available only for FA Models 6 2 9 Setpoints The two Setpoints are deactivated by default alarm mode Activating and adjusting the Setpoints is accomplished through software Once one or both Setpoints are activated the relay changes state as the current temperature passes the setpoint temperature 6 2 10 Deadband Deadband is a zone of flexibility a...

Страница 39: ...cted equipment 6 3 2 Relay Outputs The relay output is used as an alarm for failsafe conditions or as a setpoint relay refer to section 10 2 Fail Safe Operation p 46 Relay outputs relate to the currently displayed temperature on the LED display The relay output can be used to indicate an alarm state or to control external actions The relay can be set to either NO Normally Open or NC Normally Close...

Страница 40: ...4 20 mA Temperature setting for 4 mA FA1A 475 C 887 F FA1B 800 C 1472 F FA1C 1200 C 2192 F FA1G 750 C 1382 F FA2A 250 C 482 F FA2B 400 C 752 F FR1A 500 C 932 F FR1B 700 C 1290 F FR1C 1000 C 1830 F Temperature setting for 20 mA FA1A 900 C 1652 F FA1B 1900 C 3452 F FA1C 3000 C 5432 F FA1G 1675 C 3047 F FA2A 800 C 1472 F FA2B 1700 C 3092 F FR1A 1100 C 2012 F FR1B 1500 C 2732 F FR1C 2500 C 4532 F Pane...

Страница 41: ...lable on FA2 models Laser Sighting L only on FA1A FA2A and FR1A FR1B models Cooling Platform for Electronics Housing W The High Temperature Fiber Cable excludes Viton coating and IP65 NEMA 4 rating 7 1 Cooling Platform for Electronics Housing The cooling platform for the electronics housing can be used for ambient temperatures up to 150 C 302 F For an efficient cooling a water flow of 2 l 0 53 gal...

Страница 42: ...ge Collar with protection tube for optical head XXXFOHAPA Protection Tube XXXFOSTCA Fitting System RS232 485 Interface Converter XXX485CV Industrial Power Supply XXXSYSPS Terminal Block XXX2CTB Terminal Block including 24 VDC power supply and NEMA 4 IP 65 rated housing RAYMAPB High intensity aiming light 150 W XXXHIALFA1 110 VAC powered XXXHIALFA2 230 VAC powered Table 3 Accessories selection Air ...

Страница 43: ...nded to avoid contaminants from settling on the lens Do not use chilled air below 10 C 50 F Also provided is a stainless steel protection tube 150 mm 6 inches long by 25 mm 1 inch diameter that threads onto the front of the air purge collar Figure 31 Air Purge Collar and Protection Tube XXXFOHAPA 8 3 Protection Tube The protection tube is available as an accessory It is 305 mm 12 in long and 32 mm...

Страница 44: ...ription XXXFORFQP Item 1 XXXFORFAP Item 1 Item 2 XXXFORFMF Item 1 Item 2 Item 3 XXXFORFMC Item 1 Item 2 Item 4 Figure 34 Dimension for 4 Bolt Mounting Flange Item 1 Stainless steel air purge with quick release fitting and Sapphire window Air connector NPT Item 2 Stainless steel tube 203 mm 8 in Item 3 Stainless steel 4 bolt mounting flange Item 4 Stainless steel gravity held mounting base ...

Страница 45: ...ures Order number Model XXX485CVT 25 pin to terminal strip interface converter recommended for direct wiring between a serial interface and the terminal block XXX485CVT1 XXX485CVT with 110 VAC power adapter XXX485CVT2 XXX485CVT with 230 VAC power adapter XXX485CV 25 pin to 25 pin interface converter XXX485CV1 XXX485CV with 110 VAC power adapter XXX485CV2 XXX485CV with 230 VAC power adapter Table 4...

Страница 46: ...short circuit and overload protection To prevent electrical shocks the power supply must be used in protected environments cabinets Technical data Protection class class II as per IEC EN 61140 Environmental protection IP20 Operating temperature range 25 C to 70 C 13 F to 158 F AC Input L N wire size 0 5 to 2 mm AWG 24 to 12 DC Output wire size 0 5 to 2 mm AWG 24 to 12 Figure 35 Dimension of Indust...

Страница 47: ...ocked It can be unlocked with the command XXXJ U CR where XXX is the multidrop address 9 2 Command Structure Protocols are the set of commands that define all possible communications with the sensor The commands are described in the following sections along with their associated ASCII command characters and related message format information Types of commands include the following 1 A request for ...

Страница 48: ...nt value of any individual parameter can be requested by the host The unit responds once with the value at the selected baud rate Additionally the user defined output string can be polled 9 3 2 Burst Mode The unit transmits the user defined output string continuously at the selected baud rate which may contain all of the parameters Parameters may also be polled for while the instrument is in burst...

Страница 49: ...al response time is defined as the time that elapses between a change in target temperature and the transmission of a burst string reporting the new temperature Actual digital response time can vary from one reading to the next so the digital response time is defined as the average digital response time The average digital response time depends on the number of characters requested in the output s...

Страница 50: ...0 10 1 00 1 00 Valley hold time FA only F nnn n Average time 4 G nnn n 000 0 300 0 s 000 0 Top of mA range H nnnn 0000 9999 C F High end of sensor range Sensor internal ambient I nnn Switch panel lock J X L locked U unlocked unlocked Relay alarm output control K n 0 off 1 on 2 normally open 3 normally closed 2 Bottom of mA range L nnnn 0000 9999 C F 6 Mode FR only M n 1 1 color 2 2 color 2 Target ...

Страница 51: ... current XO n 0 0 20 mA 4 4 20 mA 4 Second setpoint XP nnnn 0000 to 5432 11 0000 Sensor revision XR Xn set at factory calibration Setpoint relay function XS nnnn 0000 to 5432 9 0000 Trigger XT n XT0 inactive XT1 active Identify unit XU XUFR1A Sensor serial number XV Xnnnnnn set at factory calibration Hysteresis Advanced Hold XY nnnn 0000 3000 C 0002 Attenuation to activate relay 10 FR only Y nn 0 ...

Страница 52: ...de 001 VP 001V P Target temperature 1 color wide 001 W 001 W1210 Burst string contents 001 X Multidrop address 001 XA 001 XA013 001XA 013 Low temperature limit 001 XB 001 XB Deadband 001 XD 001 XD12 001XD 12 Restore factory defaults 001 XF XF 001 XF High temperature limit 001 XH 001 XH1400 Sensor initialization 001 XI 001 XI0 001XI 0 001 XI Laser 001 XL 001 XL1 001XL 1 001 XL1 Sensor model type 00...

Страница 53: ...r repair please contact our Service Department before shipping Phone numbers are listed at the beginning of this document 10 1 Troubleshooting Minor Problems Symptom Probable Cause Solution No output No power to instrument Check the power supply Erroneous temperature Faulty sensor cable Verify cable continuity Erroneous temperature Field of view obstruction Remove the obstruction Erroneous tempera...

Страница 54: ...H 6 low Table 9 Error Codes in 1 Color Mode FA models Condition 2 Color 1 Color wide band 1 Color narrow band Priority Heater control temperature over range ECHH ECHH ECHH 1 high Heater control temperature under range ECUU ECUU ECUU 2 Internal temperature over range EIHH EIHH EIHH 3 Internal temperature under range EIUU EIUU EIUU 4 Wide band detector failure EHHH EHHH temperature 5 Narrow band det...

Страница 55: ...analog outputs For example in 2 color mode if the internal ambient is too high and the attenuation is too high the unit outputs EIHH on the LED s and digital output and 21 mA on the analog output However since 2 color wide band and narrow band temperatures may all be presented simultaneously through RS485 their over and under range conditions are independent Examples of failsafe conditions 1 One c...

Страница 56: ...el hair brush or a soft lens tissue available from camera supply stores 3 Clean remaining dirt using a cotton swab or soft lens tissue dampened in distilled water Do not scratch the surface For finger prints or other grease use any of the following Denatured alcohol Ethanol Apply one of the above to the lens Wipe gently with a soft clean cloth until you see colors on the surface then allow to air ...

Страница 57: ...contaminants get into the open connectors the sensor s accuracy will be compromised After removing the cable or before installing a new cable the ends must be protected at all times until connected to the sensing head and electronics enclosure Cables are shipped with protective end caps Always save these caps for use whenever the fiber optic cable must be disconnected Any contamination to the fibe...

Страница 58: ...the cable connecting sleeve 2 Loosen the cable receptacle screw to release the cable 3 Pull cable from electronics enclosure and immediately place a protective cap over the end of the fiber optic cable Do not use adhesive tape on the cable end Figure 37 Removing the Fiber optic Cable from the Electronics Housing Turn 1 3 mm 0 050 hex wrench counter clockwise until cable is loose Put cable out Firs...

Страница 59: ...ng hex screw Tighten the hex screw with the 1 3 mm 0 050 hex wrench until snug Do not over tighten Figure 38 Attaching the Fiber optic Cable to the Optical Head 10 4 2 2 Attaching the Fiber Optic Cable to the Electronics Housing Complete the following steps to attach the fiber optic cable to the electronics housing 1 Insert the tip of the fiber optic cable into the mating receptacle on the electro...

Страница 60: ...r e g by means of the Windows Explorer 2 For launching the program you have to select the file and to push the Enter button 3 In the following dialog you are requested to select the right COM port with the plugged unit For establishing the communication click on the Done button 4 The main screen appears Click on the Fiber ID button 5 In the following dialog you are requested to input the calibrati...

Страница 61: ...Maintenance Marathon Series FA FR 53 Figure 40 Dialog for the Calibration of the Fiber Cable ...

Страница 62: ...until the correct temperature value is reached This is the correct emissivity for the measured material 2 If possible apply flat black paint to a portion of the surface of the object The emissivity of the paint must be above 0 98 Next measure the temperature of the painted area using an emissivity setting of 0 98 Finally measure the temperature of an adjacent area on the object and adjust the emis...

Страница 63: ... 0 05 0 2 electrolytic 0 2 0 4 oxidized 0 2 0 8 Silver 0 04 Gold 0 3 Steel Haynes cold rolled 0 8 0 9 Alloy 0 5 0 9 polished sheet 0 35 Inconel molten 0 35 oxidized 0 4 0 9 oxidized 0 8 0 9 sandblasted 0 3 0 4 stainless 0 35 electropolished 0 2 0 5 Tin unoxidized 0 25 Iron Titan oxidized 0 7 0 9 polished 0 5 0 75 unoxidized 0 35 Zinc rusted 0 35 oxidized 0 6 polished 0 5 Table 12 Typical Emissivit...

Страница 64: ...uring the following metals with smooth clean unoxidized surfaces Iron Nickel Tantalum Stainless Steel Rhodium Tungsten Cobalt Steel Molybdenum Platinum Molten iron also has an approximate slope setting of 1 060 How to determine slope The most effective way to determine and adjust the slope is to take the temperature of the material using a probe sensor such as an RTD thermocouple or other suitable...

Страница 65: ...t be visible to the sensor at temperatures below the minimum temperature 95 attenuation Figure 41 Typical Percentage of Allowed Signal Reduction FR1A Models Figure 42 Typical Percentage of Allowed Signal Reduction FR1B Models Figure 43 Typical Percentage of Allowed Signal Reduction FR1C Models Target Temperature Maximum Allowed Signal Reduction Target Temperature Maximum Allowed Signal Reduction T...

Страница 66: ...y at the highest temperature and the highest geometrical attenuation is the value guaranteed in our specifications However notice that the accuracy of the instrument is approximately a factor of two or more better than our specification over the majority of the usable temperature and attenuation combinations i e for all geometrical attenuations less than approximately 80 Thus by choosing the senso...

Страница 67: ...cavaties and plates black body sources 25 to 500 C 20 to 800 C Low Temp Secondary Working Standard 20 to 800 C Low Temp Primary Standard Daily check at 1000 1700 and 2500 C Cross check Annual NIST Calibration and historical data results review Annual NIST Calibration and historical data results review Fluke Calibrated blackbody cavaties and plates Fluke Working Standards Fluke Primary Standards Na...

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