Amprobe Light Meter w/Auto Ranging
Amprobe 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 Features:Measure in lux or footcandles, front panel switchableMeasuring range to 200,000 Lux or 20,000 foot candlesSilicon photodiode sensor and filterData hold to freeze reading on the digital displayMin/max ability to show high and low readingsAutoranging plus manual rangeZero function to null display before a readingAuto power off to save battery lifeIncludes protective sensor capLarge, 3-1/2 digit display No hassle 1-Year warranty Included Accessories: Batteries (installed), carrying case, users manual 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 30°60°80° Characteristics± 2% ± 6% ± 25% Cosine Angular corrected per JIS C 1609:1993 and CNS 5119 general A class Resolution 0.01 fc/luxGeneral SpecificationsDisplay 3¾ digit liquid crystal display (LCD) with a maximum reading of 1999 Sampling Rate 2.5 times per second for digital display Polarity Automatic, positive implied, negative polarity indication Overrange (OL) or (-OL) is displayed Zero Automatic Low battery indication The battery symbol is displayed when the battery voltage drops below the operating level Temperature / Humidity: Operating -10°C to 50°C (14°F to 122°F), 0 to 80%RHStorage -10°C to 50°C (14°F to 122°F), 0 to 70%RH Altitude 2000m, indoor operation Power Supply 9V NEDA 1604, IEC 6F22, JIS 006P battery Battery life 200 hours Auto Power Off approx 6 min Dimension (Base) 130 x 63 x 38 mm (5.1 x 2.5 x 1.5in.) Dimension (Sensor) 80 x 55 x 29 mm (3.2 x 2.2 x 1.1in.) Weight 220 g (.48 lb.) include battery Agency Approvals & CertificationsEN61326-1 This product complies with requirements of the following European Community Directives: 89/336/EEC (Electromagnetic Compatibility) and 73/23/EEC (Low Voltage) as amended by 93/68/EEC (CE Marking). However, electrical noise or intense electromagnetic fields in the vicinity of the equipment may disturb the measurement circuit. Measuring instruments will also respond to unwanted signals that may be present within the measurement circuit. Users should exercise care and take appropriate precautions to avoid misleading results when making measurements in the presence of electronic interference.