Lux meters, light meters
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Lux
https://en.wikipedia.org/wiki/Lux
Extech 401025: Foot Candle/Lux Light Meter
Includes analog output and fast/slow response feature
Features:
- Accurately displays light level in terms of Fc or Lux over three ranges
- Select fast (1 second) or slow (2 seconds) response time
- Analog output of 1mV per count for capturing readings to a recorder
Extech 407026: Heavy Duty Light Meter with PC Interface
Light meter with four lighting types Tungsten/Daylight, Fluorescent, Sodium, and Mercury
Features:
- Simultaneous display of Foot Candles or Lux
- Super large 1.4” (1999 count) LCD display
- % displays differential from reference point
- “ZERO” Re-Calibration
- Utilizes precision photo diode and color correction filter
- Cosine and color corrected measurements
- ±4% accuracy is enhanced by selecting lighting type (Tungsten/Daylight, Fluorescent, Sodium, Mercury)
- Record/Recall MIN, MAX and AVG readings, Data Hold plus Auto shut off
- Built-in RS232 serial interface, optional software
Extech 45170: Hygro-Thermo-Anemometer-Light Meter
Pocket size rugged 4-in-1 meter for Humidity, Temperature, Air Velocity and Light
Features:
- Ergonomic pocket size housing with large dual LCD simultaneous display of
- Temperature and Air Velocity or Relative Humidity
- Characters on display reverse direction depending on Hygro-Thermo-Anemometer or Light Mode
- Data Hold to freeze the displayed value
- Records Min/Max readings
- Built-in low friction vane wheel improves accuracy of air velocity in ft/min, MPH, m/s, km/h, and Knots
- Built-in precision thin-film capacitance humidity sensor for fast response
- Built in thermistor for ambient temperature measurements
- High temperature measurements using Type K thermocouple
- Utilizes precision photo diode and color correction filter
- Cosine and color corrected light measurements
- Auto power off, Low Battery and overrange indication
- Complete with built-in Humidity sensor, Light sensor and Vane wheel, wrist strap, and 9V battery
SDL470: UVA/UVC Light Meter/Datalogger
Short-/Long-wave UV Irradiance Light Meter with Datalogging
Features:
- UVA probe captures long-wave 365nm UV irradiance measurements under a UVA (black light) source
- UVC probe captures short-wave 254nm UV irradiance measurements under a UVC light source
- Cosine correction filter and metal housing
- Datalogging feature records readings with date and time stamp on an SD card (included) in Excel® format
- Offset adjustment used for zero function or to make relative measurements
- Adjustable data sampling rate from 1 to 3600 seconds
- Stores 99 readings manually
- Type K/J Thermocouple input for temperature measurements (probes sold separately)
- Large backlit LCD display
- Record/Recall MIN, MAX readings, Data Hold plus Auto power off with disable function
- Complete with built-in tilt stand, SD memory card, UVA light sensor with protective cover, UVC light sensor, hard case, Universal AC adaptor, and 6 x AA batteries
Extech LT300: Light Meter
Digital and Analog display of light in Foot-candles or Lux
Features:
- Wide range to 20,000Fc or 200,000 Lux with high resolution to 0.01 Fc/Lux
- Relative mode indicates change in light levels, peak mode captures highest reading
- Remote light sensore on 12″ (305mm) coiled cable – expandable to 24″
- Utilizes precision photo diode and color correction filter
- Large LCD display with analog bargraph
- Backlight for readings in low light levels
- Complete with 9V battery, light sensor with protective cover, protective holster, and pouch case