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Reed Instruments - Test and Measurement Equipment


REED SD-1128
Light Meter Datalogger w/ Temperature

Datalogger with date/time stamp stores measurements on SD memory card without the need for software.

The REED SD-1128 SD series datalogging light meter has a wide measurement range up to 100,000 Lux (10,000 Foot Candles) and features user selectable sampling rates from 1 to 3600 seconds. Using an SD card (max 16Gb) a user can select a desired sampling rate and quickly generate an Excel file without the use of software.

Optional accessories include a tripod and AC adapter for continuous long-term monitoring. Optional PC software also allows a user to track live measurements.


  • Measures Ambient light levels, as well as temperature with a type J/type K thermocouple thermometer
  • Sensor features photo diode and colour correction filters and meets C.I.E. spectrum specifications
  • Light levels are measured in foot-candles or lux
  • Temperature is measured in °C or °F
  • Easy to read LCD with backlight
  • Data hold and Max/Min record
  • Real time data logger with integral SD memory card (OPTIONAL)
  • Just plug the SD card into the computer and it downloads directly to EXCEL
  • RS-232 and USB computer interface
  • Auto or manual power off
  • NIST Traceable Certification Available


  • Measuring Range: 2,000, 20,000, 100,000 lux
    (200, 2,000, 10,000 Ft-cd)
  • Resolution: 1, 10, 100 lux (0.1, 1, 10 Ft-cd)
  • Accuracy: ±(4% + 2 dgt)
  • Type K Temp.Range: -100.0 to 1300.0°C (-148.0 to 2372°F)
    Resolution: 0.1°C/°F
    Accuracy: ±(0.4% +0.5°C/+1°F)
  • Type J Temp.Range: -100.0 to 1200.0°C (-148.0 to 2192°F)
    Resolution: 0.1°C/°F
    Accuracy: ±(0.4% +0.5°C/+1°F)
  • Auto Sampling Time: 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds
  • Memory Card: SD memory card, 1 GB to 16 GB
  • Data Output: USB/RS232 PC computer interface AC Output: 0.5 Vrms corresponding to each range step
  • Output Impedance: 600Ω
  • Power Supply: 6 x 1.5V UM3/AA batteries
  • Dimensions: 7 x 2.7 x 1.9�
  • Weight: 1.08 lb

REED SD-1128 Light Meter Datalogger

Spec Sheet (PDF)


SD-1128 Light Meter Datalogger


REED SD-1128 Light Meter Datalogger


SD-1128 Light Meter Datalogger w/ NIST


REED SD-1128 Light Meter Datalogger w/ NIST

NIST Traceable Certification Available

NIST Traceable Certification Available - (Optional)

Note: NIST Certification may delay shipment by 1 - 3 Days

Orders over $300 ship FREE to 48 States


Optional Accessories:

 Optional 4GB SD Memory Card

Optional SD Card

 Soft Carrying Case
9" x 4" x 2"


CA-05A Soft Carrying Case


PC Software


8 Channel Windows Compatible Software

Type K Thermocouple Wire Probe


TP-01 Wire Probe

USB Adapter Cable


USB-01 Cable

Orders over $300 ship FREE to 48 States

REED Light Meters and Accessories:
REED LM-81LX Light Meter
LM-81LX Light Meter
20,000 lux
REED R8150 Pocket Light Meter
R8150 Pocket Light
Meter 50,000 lux
REED YK-10LX Light Meter
YK-10LX Light Meter
20,000 lux
REED LM-8000 4-in-1 Multi-function Meter
REED LM-8000
Multi-function Meter

*  *  *  *  *  *  *

  REED SD-1128 Light Meter Datalogger
SD-1128 Light Meter
Datalogger w/Temp
REED SD-9300 Environment Meter Datalogger
SD-9300 Environment
Meter Datalogger

*  *  *  *  *  *  *

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