uNIT-LL Luminance Meter - General Purpose

This System includes our model 2153 luminance sensor, featuring an integral lens that provides a fixed field of view of 13 degrees.  It is ideally suited for measurement of the brightness of diffuse surfaces or uniform light sources, such as the intensity of displays.

 

Combined with our highly popular S471 portable photometer, the system provides simple and precise measurements.  The package includes a battery charger and necessary connector cables.

Under the UDT Instruments brand, Gamma Scientific manufactures a broad range of precision photometers, radiometers, colorimeters and photosensors for optical measurement application.

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Precision-matched Measurement Solutions

S471 Optical Power Meter

  • High Accuracy Measurements
  • Programmable Average Readings in Low Pass or Boxcar Average
  • High Speed Update Rate
  • Optional USB to Serial Bridge Converter
  • Long Battery Lifetime or Use External Power

2153 Photometric Sensor

  • Luminance Measurements cd/m2 and foot-lamberts (fL)
  • Integrated fixed-focus lens for non-contact measurement
  • 13 Degree Fixed Field of View

S471 OPTICAL POWER METER GENERAL SPECIFICATIONS

Electronic

7 Gains, auto/manual selection

Computer Interfaces

RS-232 or USB

Sample rates

(Display Enabled) > 2 Hz   (Display Disabled) up to 53 Hz

Analog Output Scale

± 1, 2, or 4 VDC

Communication Rate

9600 Baud

Operational Battery Life

32 Hours with backlight off, 24 Hours with backlight on

Operating Temperature

10 to 60° C

Storage Temperature

-20 to 35° C for up to 1 year

External Power Source

12 VDC at 3.3 A or 100-240 VAC 50/60 Hz with supplied power adaptor, 40 W max

Internal Power Source

Rechargeable integral battery pack -- 5 NiMH AA, 1800 mAHr batteries

Calibration Capacity

9 Continuous or 50 single-point

Calibration Traceability

Traceable to NIST with optional ISO/IEC 17025 accredited

Relative Humidity

Up to 99% (non-condensing)

Regulatory Compliance

TUV, UL, CSA, CE

 

2153 PHOTOMETRIC SILICON DETECTOR GENERAL SPECIFICATIONS

CIE V (λ) Function

f1’   ≤ 3%

Active Area

1 cm2

Dynamic Range

1 x 10-2 to 1 x 106 cd/m2

Calibration

ISO17025, NIST Traceable

Cable

2 meter, included

Specifications are subject to change without notice.