Light Meter LM-1200

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Light Meter LM-1200

Product catalog summary

Features:

High measuring range up to 400,000 Lux with high accuracy and rapid response.
Includes a bar-graph and data-hold function for retaining measurement values.
Automatic zeroing and meter correction for spectral relative efficiency.
No manual calculation needed for correction factors with non-standard light sources.
Short rise and fall times with a peak-hold function for light pulses as short as 10 μs.
Auto power off after 30 minutes, with maximum and minimum measurement capabilities.
Relative reading and reset function available.

Specifications:

Display: 3-3/4 digit LCD with a high-speed 42 segment bargraph.
Measuring Range: 40.00 - 400.0 Lux, 4000 - 40,000 Lux, 40,000 - 300 kLux, with equivalent footcandle ranges.
Overrange Display: Displays “OL” symbol.
Spectral Response: CIE Photopic with spectral accuracy of CIE Vλ function f1’≤6%.
Cosine Response: f2’ ≤ 2%.
Accuracy: ±5% reading ±0.5% full scale.
Repeatability: ±3%.
Sampling Rate: 13.3 times/sec for analog bar-graph, 1.3 times/sec for digital display.
Photo Detector: Silicon photo diode with spectral response filter.
Operating Conditions: 0° C to 40° C, 0% to 80% RH.
Storage Conditions: -10° C to 50° C, 0% to 70% RH.
Power Source: 9V battery.
Photo Detector Lead Length: Approximately 150 cm.
Dimensions: 170×80×40 mm.
Weight: 390 g.

Accessories: Soft case, instruction manual, battery.

Catalog excerpts

FEATURES • High measuring Range, up to 400 000 Lux. • High accuracy and rapid response. • Bar-graph • Data-hold function for holding measuring values. • Automatic zeroing. • Meter corrected for spectral relative efficiency. • Correction factor need not be manually calculated for non-standard light sources. • Short rise and fall times. • Peak-hold function for tracing the peak signal of light pulse with a minimum duration of 10 gs. • Auto power off 30 minutes. • Maximum and minimum measurements. • Relative reading & Reset function. The Light Meter LM-1200 is a precision instrument used to measure illuminance (lux, footcandle) in the field. It meets the CIE photopic spectral response specification ans is fully cosine corrected for the angular incidence of light. The illuminance meter is compact, rugged and easy to handle. The light sensitive component used in the meter is a very stable, long-life silicon photo diode and spectral response filter. Accessories: Soft Case, instruction manual, battery.

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