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Distance & Spot Size

As the distance (D) from the object increases, the spot size

(S) of the area measured by the unit becomes larger. The

relationship between distance and spot size for each unit is

listed below. The focal point for each unit is 203mm (8”).

The spot sizes indicate 90% encircled energy.

Содержание QM7420

Страница 1: ...Dual Laser Non Contact Thermometer QM7420 User Manual...

Страница 2: ...ENTS INTRODUCTION 3 FEATURES 3 WIDERANGEAPPLICATION 4 SAFETY 4 DISTANCE SPOTSIZE 5 SPECIFICATIONS 6 FRONTPANELDESCRIPTION 8 INDICATOR 8 BUTTONS 9 MEASURMENTOPERATION 10 BATTERYREPLACEMENT 13 NOTES 13...

Страница 3: ...mometers can be used to measure the temperature of objects surface that is improper to be measured by traditional contact thermometer such as moving object the surface with electricity current or the...

Страница 4: ...ire inspectors Plastic molding Asphalt Marine and Screen printing measure ink and Dryer temperature HVAC R Diesel and Fleet maintenance SAFETY l Use extreme caution when the laser beam is turned on l...

Страница 5: ...e object increases the spot size S of the area measured by the unit becomes larger The relationship between distance and spot size for each unit is listed below The focal point for each unit is 203mm...

Страница 6: ...range D S 40 to 650 oC 40 1202 16 1 Display resolution 0 1 oC 0 1 1000 1 1000 Accuracy for targets Assumes ambient operating temperature of 23 to 25 oC 73 to 77 40 0 40 32 3 6F 2C 0 2F C Per degree 0...

Страница 7: ...sitive polarity Minus sign for negative polarity Diode laser output 1mW Wavelength 630 670nm Class 2 laser product Operating temp 0 to 50 32 to 122 Storage temp 10 to 60 14 to 140 Relative humidity 10...

Страница 8: ...to it When accuracy is critical make sure the target is at least twice as large as the spot size 2 FRONT PANEL DESCRIPTION IR sensor LCD Display Laser Backlight button Down button UP button mode butto...

Страница 9: ...emperature change indication symbol High alarm and low alarm symbol Low power symbols Laser on symbols Symbols for MAX MIN DIF AVG Temperature values for the MAX MIN DIF AVG Current temperature value...

Страница 10: ...High Alarm HAL Low Alarm LAL and Emissivity EMS press and hold the MODE button until the appropriate code appears in the display press the UP and down buttons to adjust the desired values 3 You can t...

Страница 11: ...The diagram shows the sequence of functions in the mode cycle EMS adjustment The Emissivity EMS digitally MDOE adjustable from 0 10 to 1 0 C F pressing up down button or Laser Backlight button to chan...

Страница 12: ...LOW adjustment The high Low alarm adjustable form 40 to 650 oC 40 1202 The function of TRIG means that when the TRIG is turn on press and hold the trigger for more than 10 minutes the device will tur...

Страница 13: ...ay will light if the battery is good Replace the battery if the display if off The meter will automatically power down after approximately 8 seconds after the trigger is released Note Measurement cons...

Страница 14: ...measurements are made This is a result of the cooling process which must take place for the IR sensor 5 BATTERY REPLACEMENT As battery power is not sufficient LCD will display a flashing battery Symb...

Страница 15: ...target is larger than the unit s spot size The smaller the target the closer you should be to it When accuracy is critical make sure the target is at least twice as large as the spot size Distance Spo...

Страница 16: ...ost 90 of typical applications organic materials and painted or oxidized surfaces have an emissivity of 0 95 pre set in the unit Inaccurate readings will result from measuring shiny or polished metal...

Страница 17: ...0 Charcoal powder 0 96 Earth 0 92 to 0 96 Lacquer 0 80 to 0 95 Water 0 92 to 0 96 Lacquer matt 0 97 Ice 0 96 to 0 98 Rubber black 0 94 Snow 0 83 Plastic 0 85 to 0 95 Glass 0 90 to 0 95 Timber 0 90 Cer...

Страница 18: ...h Do not use abrasives or solvents on this instrument Distributed by Electus Distribution Pty Ltd 320 Victoria Rd Rydalmere NSW 2116 Australia www electusdistribution com au Made in China MAINTENANCE...