Working...

Light Meters

Extech Instruments

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.

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
<< Back   Next >>