Safety Precaution - RS Pro RS-3809 Bedienungsanleitung

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),
combustible gas (material) steam or filled with dust.
• In order to avoid reading incorrect data, please replace the battery immediately when
the symbol " "appears on the LCD.
• 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˚C~60˚C,0%~70%RH.
• 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 1ft away
from a 1ft 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 1m away from a 1m 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,
Nbr. of foot (meter) candlelight = Nbr. of Lumen
Area(sq. foot or sq. meter)
25/12/2017 Version No. 001
LED Light Meter / English
1