Fluke Amprobe LM120 Digital Light Meter with Auto Ranging

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 footcandle (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 Autoranging 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 burden of 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.
 
Specifications
Illumination Accuracy at 23°C ± 5°C (73.4°F ± 5°F), < 75% R.H.
Sensor Silicon photodiode and filter
Measurement Rate 2.5 times per second
Range 20, 200, 2000, 20000, 200000 Lux
20, 200, 2000, 20000 Foot candles
Accuracy ± 3% (Calibrated to standard incandescent lamp at 2854°K)
6% other visible light sources
Angle deviation from cosine Characteristics
30° ± 2%
60° ± 6%
80° ± 25%
Cosine Angular corrected per JIS C 1609:1993 and CNS 5119 general A class
Resolution 0.01 fc/lux
General Specifications
Display 3 3/4 digit liquid crystal display (LCD) with a maximum reading of 1999
Sample Rate 2.5 times per second for digital display
Polatity Automatic, positive implied, negative polarity indication
Overrange (OL) or (-OL) is displayed
Zero Automatic
Low Battery Indication  The is displayed when the battery voltage drops below the operating level
Temperature / Humidity Operating -10 °C to 50 °C (32 °F to 122 °F); 0 to 80%RH
Storage -10 °C to 50 °C (32 °F to 122 °F); 0 to 70%RH
Altitude 2000m, indoor operation
Battery 9V NEDA 1604, IEC 6F22, JIS 006P battery
Battery Life 200 hours
Auto Power Off approx 6 min

Location

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