Description
The Amprobe LM-120 light meter measures the visible light from fluorescent,
metal halide, high-pressure sodium or incandescent sources. It is a portable,
easy-to-use digital light meter designed for simple one-hand operation
reading in Lumen (lux) or foot candle (fc) units. The LM-120 measures a wide
range of light up to 20,000 fc or 200,000 lux with an accurate,
high resolution of 0.01 fc/lux. This unit is Auto-ranging plus manual
ranging with ability to Zero out the reading before taking a measurement.
Use the LM-120 light meter to measure the illumination level in the interior
and to switch off or reduce or increase the output level of lighting fixtures.
Reduce the energy burdenof the building by significantly
increasing the efficiency of its lighting system.
One lux is the illumination from a one candela lamp perpendicular
to a surface one meter squared at a distance of one meter.
One fc is the illumination from a one candela lamp perpendicular
to a surface one foot squared at a distance of one foot.
1 foot-candle = 10.764 Lux and 1 lux = 0.09290 footcandles.
Features
Measure in lux or footcandles, front panel switchable
Measuring range to 200,000 Lux or 20,000 foot candles
Silicon photodiode sensor and filter
Data hold to freeze reading on the digital display
Min/max ability to show high and low readings
Autoranging plus manual range
Zero function to null display before a reading
Auto power off to save battery life
Includes protective sensor cap
Large, 3-1/2 digit display
Specifications
Feature
LM-100
LM-120
Ranging Manual Automatic/Manual
Illumination sensor Silicon photodiode and filter
Range lux 20, 200, 2000, 20000, 200000
Range footcandles 20, 200, 2000, 20000
Calibration point 2854 °K Cosine Angular corrected
per JIS C 1609:1993 and CNS 5119 general A class
Data Data hold Data hold, min/max
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