Reed R8100SD-NIST Data Logging Light Meter

Original price was: $544.00.Current price is: $489.60.



REED R8100SD-NIST Data Logging Light Meter

(Replaced SD-1128-NIST)

Reed R8100SD-NIST Datasheet (PDF)

Real-time data logger with integrated SD memory card measures/records ambient light levels in Foot Candles or Lux and contact temperature with optional type J/K thermocouple probe.


REED R8100SD Offers

The R8100SD has a wide measurement range up to 100,000 Lux (10,000 Foot Candles) and features Data hold, Max/Min functions, and an easy-to-read backlit LCD display. Using a SD card (max 16GB), a user can manually record up to 99 readings or automatically by selecting a desired sampling rate from 1 to 3600 seconds. Quickly generate an Excel file with raw data, all without the use of software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring.


  • Measures ambient light levels in Foot Candles or Lux
  • Photo diode and colour correction filters meet C.I.E. spectrum specifications
  • Contact temperature measurement with a type J/K thermocouple option
  • Temperature is measured in °C or °F
  • Real-time data logger with integrated SD memory card
  • User selectable sampling rate from 1 to 3600 seconds
  • Easy-to-read backlit LCD display
  • Data hold and Min/Max functions
  • Tripod mount for long-term monitoring
  • Low battery indicator and auto shut off


REED R8100SD Specifications

Measuring Ranges Lux: 2,000, 20,000, 100,000
Fc: 200, 2,000, 10,000
Type K Temperature: -148.0 to 2372.0°F (-100.0 to 1300°C)
Type J Temperature: -148.0 to 2192.0°F (-100.0 to 1200°C)
Accuracy Lux: ±(4% + 2 Lux)
Fc: <2,000: ±(4% rdg.+ 2 Fc) 2,000-10,000: ±(4% rdg.+ 20 Fc)
Temp: >-58°F (-50°C) ±(0.4% + 1°F (0.5°C)) <-58°F (-50°C) ±(0.4% + 1.8°F (1°C))
Resolution Lux: 1, 10, 100
Fc: 0.1, 1, 10
Temp: 0.1°F (0.1°C)
Response Time <1 second
Sensor Type Photo diode & color correction filter
Autoranging Yes
Display 5-digit LCD
Backlit Display Yes
Data Hold Yes
Min Yes
Max Yes
Auto Zero Yes
Overrange Indicator Yes
Datalogging Capabilities Yes
Real-Time Clock and Date Stamp Yes
Selectable Sampling Rate Yes (1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds)
External Memory Yes, expandable up to 16GB with SD card (optional)
Auto Shut-off Yes (after 10 minutes/off)
Kick Stand Yes
Tripod Mountable Yes
Low Battery Indicator Yes
Power Supply 6 x AA Batteries or AC Adapter (optional)
Data Output Yes (RS-232)
Battery Life Sampling Time Dependent
Product Certifications CE
Operating Temperature 32 to 122°F (0 to 50°C)
Storage Temperature 14 to 140°F (-10 to 60°C)
Operating Humidity Range 10 to 80%
Dimensions 7 x 2.7 x 1.9″ (117 x 68 x 45mm)
Weight 17.3oz (489g)


What’s included with the REED R8100SD

  • Data Logging Light Meter
  • Detachable Light Sensor
  • Sensor Cover
  • Soft Carrying Case
  • Batteries
  • Calibration Certificate


Ideal Applications for the REED R8100SD

  • OSHA work environment compliance
  • Cinematography and photography applications
  • Museum exhibits
  • Lighting system installation
  • Environmental monitoring
  • Interior design projects
  • Industrial applications

Additional information

Weight 3 lbs
Dimensions 10 × 7 × 8 in

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