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M310-HT Manual 

Appendix A: Calibration & Emissivity  

  24 

Background Influence On Apparent Emissivity 

When using a blackbody source at temperatures well above ambient, common sense dictates 
how the blackbody will behave. When using a source close to ambient temperatures, different 
things happen. Since the background such as the room, wall, and you could be warmer than the 

blackbody emitter, the energy emitted from the emitter is the sum of the background reflection 
and the emitter temperature. When emitter emissivity is less than 1.0, the background energy 
times (1-emissivity) reflects to the device under calibration.  For this reason, the M310-HT may 
appear to have a higher “apparent emissivity” near ambient than when operated at higher 

temperatures. 
 
 

 

Содержание M310-HT

Страница 1: ...MANUAL M310 HT Blackbody Calibration Source...

Страница 2: ...se Technologies All other trademarks are trademarks registered trademarks and or service marks of their respective holders Service Centers LumaSense Technologies Inc North America Sales Service Santa...

Страница 3: ...ction 9 2 1 CE Declaration 9 2 2 Technical Data 9 2 3 Dimensions 10 3 Installation 11 3 1 Air Outlet Clearance 11 3 2 Line Voltage 11 3 3 RS232C Communication 11 4 Operation 13 4 1 Getting Started 13...

Страница 4: ...on Certificate 19 Emissivity for M310 M315 M316 series blackbodies 20 Accuracy at all wavelengths 20 Using the M310 to calibrate fixed emissivity pyrometers 23 Background Influence On Apparent Emissiv...

Страница 5: ...een yellow supply system conductor 1 2 Safety This manual provides important information on safely installing and operating the M310 HT blackbody Several sections of this manual provide safety warning...

Страница 6: ...e enclosed packing list Note LumaSense Technologies cannot be responsible for shortages against the packing list unless a claim is immediately filed with the carrier Final claim and negotiations with...

Страница 7: ...nearest technical service center Santa Clara California Frankfurt Germany LumaSense Technologies Inc 3301 Leonard Court Santa Clara CA 95054 USA Telephone 1 408 727 1600 1 800 631 0176 Email support...

Страница 8: ...M310 HT Manual General Information 8 To ensure consistent document formatting this page was intentionally left blank...

Страница 9: ...bration See supplied NIST calibration report Temperature Resolution 0 1 C Stability2 0 3 C per 8 hour period Source Non Uniformity Approximately 1 C 250 C or 2 C 400 C Exit Port Diameter 76 mm 3 00 in...

Страница 10: ...M310 HT Manual Introduction 10 2 3 Dimensions M310 HT Front Panel M310 HT Back Panel...

Страница 11: ...m requires constant air flow in the enclosure for proper operation The air outlet fan on the rear panel must not be obstructed Allow at least 3 inches clearance for the outlet region Blocking this por...

Страница 12: ...M310 HT Manual Installation 12 To ensure consistent document formatting this page was intentionally left blank...

Страница 13: ...t temperature 4 1 1 Front Panel Push Buttons PAGE Engages access to controller parameters Do not alter any configurations SCROLL Engages access to menu items underneath the Page menu No need to use th...

Страница 14: ...witch Warning DO NOT UNPLUG THE M310 The blackbody has a cooling fan that remains active until it is powered off If the power is interrupted by external means this cooling will not occur and the devic...

Страница 15: ...transmit output It is recommended for communication distances less than fifty feet between the computer terminal and the instrument Note Multiple instruments cannot be connected to the same port The...

Страница 16: ...You may download our Blackbody Communications program from this location http files mikroninfrared com Blackbody BlackbodyCommsSoftware ver3 zip Connect your USB to RS232 converter to an open USB port...

Страница 17: ...nd upon every start up for unusual noises and smells when applying power 6 4 Fuse Locations The M310 has one or two fuses Refer to the table below Fuse Number Amps volts Location Description F1 120 V...

Страница 18: ...M310 HT Manual Maintenance 18 To ensure consistent document formatting this page was intentionally left blank...

Страница 19: ...characteristic of emitter emissivity has already been calibrated into the system An apparent emissivity of greater than 0 995 can be achieved Recalibration or field calibration using this technique is...

Страница 20: ...14 m was normalized to 1 0 The target emissivity vs wavelength can be read directly from the graph Again you would have to normalize the mean emissivity between 8 and 14 m to 1 0 then correct for othe...

Страница 21: ...will be approximately equivalent to a blackbody that has emissivity 1 011 This will cause your pyrometer to receive 1 1 more infrared energy causing it to read a higher temperature The table below sh...

Страница 22: ...m the graph above 0 943 The blackbody exit radiance at 3 5 m will be approximately equivalent to a blackbody that has emissivity 0 943 This will cause your imager to receive 5 7 less infrared energy c...

Страница 23: ...he table below shows what setpoint to use when calibrating pyrometers infrared thermometers that have fixed emissivity at 0 95 and operate at 8 14 m wavelength This table ass mes the ambient and backg...

Страница 24: ...ent things happen Since the background such as the room wall and you could be warmer than the blackbody emitter the energy emitted from the emitter is the sum of the background reflection and the emit...

Страница 25: ...kbody temperature string w CHR 4 0011PV CHR 5 chr 4 is ascii diamond symbol chr 5 is ascii club symbol chr n is the hex value of n taken from the table section 4 1 5 in Eurotherm comm instruction manu...

Страница 26: ...y the setpoint PRINT sp make a string that is 100 times the sp value sp sp 100 spi FIX sp spi STR spi extract the two decimal values nn from the string decpt RIGHT spi 2 extract the integer values fro...

Страница 27: ...g setpoints CHR 4 0011 CHR 2 setpoint CHR x full setpoint string chr 4 is diamond symbol chr 2 is happy face symbol display the setpoint string PRINT string sent setpoints send the string to controlle...

Страница 28: ...M310 HT Manual Appendix B Sample Communication Program 28 To ensure consistent document formatting this page was intentionally left blank...

Страница 29: ...ocations 17 G General Information 5 H Heater Element 17 I Inspections 17 L Liability 6 Line Voltage 11 M Maintenance 17 O Operation 13 P Packing 7 PID Tuning Constants 13 Push buttons 13 R Repair 6 7...

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