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Summary of Contents for Major tech MT942
- Page 1 MT942 LED Light Meter LED Light Meter User Manual User Manual...
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Page 2: Table Of Contents
LED Light Meter User Manual Contents Page 1. Description ..................2. Safety Precaution ................. 3.Preface ....................4. Features ....................5. Specifications ..................6. Operation ..................... 7. Luminous Intensity Measurement ............8. Instrument Description ................. 9. Attention ....................10. Recommended Levels of Illumination ..........11. -
Page 3: Description
LED Light Meter User Manual 1. Description Measures light from visible luminaries equipped with white light LED, fluorescent, metal halide, high-pressure sodium and incandescent sources. 2. Safety Precaution CAUTION Be extremely careful for the following conditions while measuring. • Do not operate the meter under the environment with explosive gas (material), •... -
Page 4: Features
LED Light Meter User Manual therefore, Nbr. of foot (meter) candlelight = Nbr .of Lumen Area(sq .foot or sq .meter) Nbr .of Lumen= Nbr. of foot (or meter) × area 4. Features • Overload Indication: LCD screen will show “OL” on the upper left-hand corner. •... -
Page 5: Specifications
LED Light Meter User Manual 5. Specifications 4000 count, maximum display 3999 Display Silicon photodiode with filter Sensor Measuring Range 40, 400, 4000,40000, 400000 Lux 40, 400, 4000, 40000 Footcandles ±3% (Calibrated to standard Incandescent Accuracy lamp 2856°K and Corrected LED day while light Spectrum) 6% other visible light source 30 °... - Page 6 LED Light Meter User Manual screen. make sure that it is Attached to the light sensor. • MAX/AVG/MIN Press “ ” button simultaneously Lockup data maximum and average and minimum value of measure data. Press the “ ” button for more than 1 seconds to disable this feature .
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Page 7: Luminous Intensity Measurement
LED Light Meter User Manual • READ ( read memory ) Press button for more than one second to display the store values , the READ LCD will display R and MEM and NO . 01~ NO . 99, press Keys to review all the stored values , for example , NO.1 NO.2 until NO.99 . -
Page 8: Instrument Description
LED Light Meter User Manual 8. Instrument Description Light Source LED Light Meter Lux/FC L S . . READ ZERO 1-Display ( LCD). 2-LUX/FC/CD button. 3-MEM/READ. 4-MAX/AVG/MIN and setup upward. 5-Real time auto zero. 6-Power ON/OFF and disable auto power off. 7-Setup downward. -
Page 9: Attention
LED Light Meter User Manual • Relative Spectral (Sensitivity) • The deviation from the comparative standards for luminosity is determined by • JIS standard C 1609-1993. • Peak sensitivity wavelength : 550 nm (Typ.Ta=25°C) WAVELENGTH (nm) • Corrected LED day white light Spectrum 350 400 450 500 550 600 650 700 750 WAVELENGTH λ... -
Page 10: Recommended Levels Of Illumination
LED Light Meter User Manual • When it is not in use for a long time, please take the batteries • Away. And avoid keeping it in a place of high temperature and humidity. 10. Recommended Levels of Illumination Suitable levels of illuminace ( According to the JIS standard Z 9110-1979) Offices Illuminance (lux) -
Page 11: Battery Replacement
LED Light Meter User Manual 11. Battery Replacement WARNING If the symbol “ ” appears on the LCD, please replace the battery immediately 1.Remove the battery cover 2.Replace the battery 3.install the battery cover 12. End Of Life Caution: this symbol indicates that equipment and its accessories shall be subject to a separate collection and correct disposal...
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