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Offices

Factories

Schools

10. Recommended Levels of Illumination

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.

Suitable levels of illuminace

( According to the JIS standard Z 9110-1979)

Illuminance (lux)
1500 to 750
750 to 300
300 to 100
75 to 30

Place
Offices, designing, drawing rooms
Offices, conference rooms, computer rooms
Workrooms, corridors, stairways, restrooms
Indoor emergency stairways

Illuminance ( lux )
3000 to 1500

1500 to 750

750 to 300

300 to 150
75 to 30

Place
Where such work as assembling, inspecting testing,
selecting, extremely precision Visual work
Assembling, inspecting, testing,selecting, precision
visual work
Assembling, inspecting, testing, selecting and visual
ordinary work
Wrapping and packing
Indoor emergency stairways

Illuminance (lux)
1500 to 300

750 to 200

300 to 75

75 to 30
10 to 2

Place
Precision drawing or drafting, precision experimenting ,
library
Classrooms ,library reading rooms,Staff room ,
gymnasia
Lecture halls, assembly room corridors, locker rooms,
stairways, restrooms
Warehouses and emergency stairways
School passages

10

LED Light Meter User Manual

Summary of Contents for MT942

Page 1: ...14 MT942 LED Light Meter User Manual LED Light Meter User Manual Light Source R AVG NO AVG MEM M...

Page 2: ...ce 4 Features 5 Specifications 6 Operation 7 Luminous Intensity Measurement 8 Instrument Description 9 Attention 10 Recommended Levels of Illumination 11 Battery Replacement 12 End Of Life Page 3 3 3...

Page 3: ...Temperature Humidity 10 60 The flux of light received in a unit area of a certain side being shown is popularly known as illumination The measuring unit in both United Kingdom and America is known as...

Page 4: ...ar corrected According to JIS C1609 1993 and CNS 5519 general A class Specifications Measuring lights source LED white light and all visible light Measuring intensities of illumination in Lux or footc...

Page 5: ...if any digits appear on the LCD screen when the light sensor cap is not attached CAP will be shown on the Data Hold ZERO 4 Display Sensor Measuring Range Accuracy Angle deviation from cosine character...

Page 6: ...an change the calibration parameters as to 1 002 the display changes immediately set 200 0 1 008 201 6 press L S button for less than 1 second LCD Light source below the LN flashing pressure or change...

Page 7: ...ss or button to select ft feet or meter 5 Press button for less than one second 6 Press or button to set the distance between the light center of lamp and measurement base level 7 Press button for les...

Page 8: ...N and setup upward 5 Real time auto zero 6 Power ON OFF and disable auto power off 7 Setup downward 8 DATA HOLD and light source select L S 9 Photo detector MEM READ L S Lux FC CD LED Light Meter ZERO...

Page 9: ...light is located at the right top end 0 degree of the light sensor ball plane When the meter is not in use please keep the cap of the light sensor in its place to avoid the photo diode from wearing ou...

Page 10: ...minance lux 3000 to 1500 1500 to 750 750 to 300 300 to 150 75 to 30 Place Where such work as assembling inspecting testing selecting extremely precision Visual work Assembling inspecting testing selec...

Page 11: ...e battery 3 install the battery cover If the symbol appears on the LCD please replace the battery immediately WARNING Caution this symbol indicates that equipment and its accessories shall be subject...

Page 12: ...14...

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