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Light Meters

Light Meters
Light Meters
A light meter is test device used to measure the amount of ambient light present in an environment. The light measurement is expressed in foot-candles or lux, which are the non-SI and SI units of illuminance cast on a surface by a light source.

Light meters are commonly used to increase the energy efficiency of an interior lighting system. A photoelectric sensor measures the amount of light in a room, and designers can adjust output of luminaires to suit the environment.

Light meters offer a great deal of flexibility and accuracy, depending on the model. Testers can measure luminance up to 999,900 lux with a resolution up to 0.1 lux. They are accurate within 3 to 5 percent at distances up to several meters.

LM Series Image
  • Analog DC Voltage Output to Operate with Chart Recorder or Data Logger (LM-120 Only)
  • Silicon Photodiode Sensor and Filter for Accuracy and High-Resolution
  • Measure in Lux or Foot-Candles, Front Panel Switchable
  • Auto Power-Off to Save Battery Life
  • Simple, One-Handed Operation
  • Zero Adjustment (LM-120 Only)
These portable, easy-to-use digital light meters measure interior illumination levels from fluorescent, metal halide, high-pressure sodium or incandescent sources. Switch off, 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.
LM-LED Series Image
  • Accurate Measurements with Spectral Response Close to CIE Luminous Spectral Efficiency
  • Measurements According to JISC1609:1993 and CNS 5119 General A Class Specifications
  • Lux or Foot-Candle Measurement Units, User Selectable
  • Max Recording Captures Highest Light Measurement
  • Measuring Lights Source Include All Visible Ranges
  • Extendable Wire (Approximately 5 ft)
  • Angled Light Cosine Correction
  • Data Hold
This professional tester accurately measures light output of LED sources for all visible light ranges.
401025 Series Image
  • Accurately Displays Light Level in Terms of Fc or Lux over Three Ranges: Fc (0-200, 0-2000 and 0-5000Fc) and Lux (0-2000, 0-20000, 0-50000Lux)
  • Resolution of 0.1Fc or 1Lux with 5% Accuracy
  • Select Fast (1 Second) or Slow (2 Seconds) Response
  • Monitor Light Levels Using Outputs; 1mV per Count Analog Output for Capturing Readings to a Recorder
  • Utilizes Precision Photo Diode and Color Correction Filter; Cosine/Color Corrected
  • Complete with 9V Battery
  • Large 3-1/2 Digit (1999 Count) LCD with Over-range Indication
  • Two Ranges: 200.0 (0.1Fc) and 2000 (1Fc)
  • 5% Basic Accuracy
  • Precision Color-Corrected, Photo-Diode Sensor
  • Battery Operated with Low Battery Indication
  • Complete with 9V Battery, Remote Light Sensor with 47" (1.2m) Cable, and Built-in Stand
EA30 Series Image
  • Compact and Rugged Design Features Large Display
  • 40,000Fc in 4 Ranges and 400,000Lux in 5 Ranges
  • Data Hold Freezes Reading on Display
  • MIN/MAX Readings
  • Cosine and Color Corrected Measurements
  • Low Battery and Overrange Indication
  • Auto Power Off to Save Battery Life
  • Utilizes Precision Silicon Photodiode Sensor with 3ft Coiled Cable for Easy Storage
  • Complete with Built-in stand, Remote Sensor with Protective Cover, Protective Rubber Holster, and 6 AAA Batteries
  • Large Display with Bargraph
  • Peak Hold Captures Short Light Pulses to 100µSec
  • Relative Function for Zero or Difference from Reference Value
EA31 Series Image
  • Compact and Rugged Design Features Large Display
  • 20,000Fc in 4 Ranges and 20,000Lux in 5 Ranges
  • Data Hold Freezes Reading on Display
  • MIN/MAX Readings
  • Cosine and Color Corrected Measurements
  • Low Battery and Overrange Indication
  • Auto Power Off to Save Battery Life
  • Utilizes Precision Silicon Photodiode Sensor with 3ft Coiled Cable for Easy Storage
  • Complete with Built-in stand, Remote Sensor with Protective Cover, Protective Rubber Holster, and 6 AAA Batteries
EA33 Series Image
  • Wide Measurement Range to 99,990Fc (999,900Lux) with Resolution of 0.001Fc and 0.01Lux
  • Luminous Intensity (Candela) Calculations
  • Ripple Function Excludes the Effect of Stray Light from the Primary Light Source Measurements
  • Auto Power Off with Disable Feature
  • Multiple Point Average Function
  • Timed-Hold, Relative in Absolute Value or % Deviation, and Comparator Function with High Low Alarms
  • Cosine and Color Corrected, CNS 5119 Class II
  • Complete with Built-in Stand, Light Sensor and Protective Cover with 36" (0.9m) Cable, Protective Holster, 6 AAA Batteries, and Carrying Case
HD450 Series Image
  • HD450 Datalogger Model Automatically Stores up to 16,000 Readings or Manually Store/Recall up to 99 Readings
  • Wide Range to 40,000Fc or 400,000Lux
  • Cosine and Color Corrected Measurements
  • Utilizes Precision Silicon Photo Diode and Spectral Response Filter
  • Peak Mode (10mS) Captures Highest Readings
  • Relative Mode Indicates Change in Light Levels
  • Min/Max and Data Hold
  • Large Backlit LCD Display with 40-Segment Bar Graph
  • Heavy Duty Rugged Double Molded Housing
  • Built-in USB Port
  • Includes Light Sensor with 3ft (1m) Cable and Protective Cover, Windows Compatible Software with USB Cable, Hard Carrying Case, and 9V Battery
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