Major tech MT942 Manuel de l'utilisateur - Page 3
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1. Description
Measures light from visible luminaries equipped with white light LED, fluorescent,
metal halide, high-pressure sodium and incandescent sources.
2. Safety Precaution
• Do not operate the meter under the environment with explosive gas (material),
•
combustible gas (material) steam or filled with dust.
• In order to avoid reading incorrect data , please replace the battery immediately
•
when the symbol "
• In order to avoid the damage caused by contamination or static electricity, do
•
not touch the circuit board before you take any adequate action .
• Operating Environment: Indoors use, This instrument has been designed for
•
being used in an environment of pollution degree 2.
• Operation Altitude : Up to 2000 M.
• Operating Temperature & Humidity : 5 C~40 C,0%~70%RH.
• Storage Temperature & Humidity :-10
•
EMC:EN61326-1(2006) . IEC61000-4-2(2006).
•
IEC61000-4-3(2006)+(2007).
3.Preface
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 footcandles light ,but in Europe it is also known as meter candlelight.
One foot-candles light is the illumination of light that falls on one side which is
one foot away from a one foot-candlelight and exactly intersecting with the light .
Its abbreviated form is written as 1 Fc= l Lm/ft, similarly, one-meter candlelight
is the illumination of light that falls on a side which is one meter away from a one
meter candlelight and exactly intersecting the light. It is also called Lux i, e. the
flux of light being received in each sq. meter is called the illumination of one lumen.
1FC=10.764 LUX, 1LUX= 0.09290 FC,
LED Light Meter User Manual
CAUTION
Be extremely careful for the following
conditions while measuring.
"appears on the LCD.
˚
˚
C~
60
˚
˚
C,0%~70%RH.
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