ACCU-CAL™ 50 Radiometers

For use with UV Spot Lamps & UV Flood Lamps

CE Marked – Available Globally

The ACCU-CAL™ 50 radiometer UV intensity meter is a simple-to-operate device that measures UV-A (320-390nm) intensity and dose (energy). Degradation of UV curing bulbs, lightguides, and reflectors can significantly reduce intensity, resulting in incomplete cures.

The ACCU-CAL™ 50 allows operators to validate, monitor, and document a UV curing process. A low intensity measurement signals an operator to replace the bulb, lightguide, or reflector. The ACCU-CAL™ 50 can also be used to confirm that operators are properly shielded from UV exposure.

  • Measurement range up to 40W/cm2
  • Only one calibration per year
  • Durable temperature-resistant sensor
  • Comes with sturdy carrying case
  • PTB and NIST traceable

Take advantage of the opportunity to evaluate our light curing systems for two weeks free of charge through our Try-and-Buy program.


Spectral Sensitivity:  320 to 395 nm

Intensity Range:  1 mW/cm2 to 40 W/cm2

Intensity (1 mW/cm2; to three significant digits) 
Dose (1 mJ/cm2)

Calibration Period:  12 months

Operating Temperature Ranges Optometer: +5 to +40°C

Detector: 120°C continuous, Peak 200°C

Measurement Modes: 
Intensity (mW/cm2 and W/cm2)
Peak Intensity (mW/cm2 and W/cm2)
Dose (J/cm2)

Light Sources
Lightguides (3 mm, 5 mm, and 8 mm)

Power Supply:  Two (2) AA batteries

Battery Life:  250 hours (automatic shutoff after 1 hour)

Sensor Dimensions: 
Photo-Sensor Diameter = 9 mm
Diameter = 37 mm
Thickness = 8 mm
Cable Length = 1 M

Meter Dimensions: 
120 mm (Length) x 65 mm (Width) x 23 mm (Thickness)

Radiometers & Accessories

Part # Product/Description
39561 ACCU-CAL™ 50 for Flood Lamps and Conveyors: Complete radiometer (without lightguide adapters or lightguide simulator*); includes storage/carrying case
39560 ACCU-CAL™ 50 for Spot and Flood Lamps and Conveyors: Complete radiometer with lightguide adapters (3 mm, 5 mm, and 8 mm) and lightguide simulator*; includes storage/carrying case)
39554 Flood to Spot Adapter Kit: Kit includes three lightguide adapters (3 mm, 5 mm, and 8 mm) and lightguide simulator*
39556 Lightguide Adapter: Fits 3 mm ID lightguides (5 mm OD)
39557 Lightguide Adapter: Fits 5 mm ID lightguides (7 mm OD)
39558 Lightguide Adapter: Fits 8 mm ID lightguides (10 mm OD)
38408 5 mm lightguide simulator* with a standard D connection

*A lightguide simulator is used to measure direct spot lamp intensity (required to calculate lightguide transmission)

Images & Diagrams

Part Number 39560 ACCU-CAL 50 for Spots, Floods & Conveyors

PN 39560
ACCU-CAL™ 50 for spots, floods and conveyors.

Part Number 39561 ACCU-CAL 50 for Floods and Conveyors

PN 39561
ACCU-CAL™ 50 for floods and conveyors.

ACCU-CAL 50 Radiometer
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