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.


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

System Specifications

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Property Specifications
Spectral Sensitivity 320 to 395 nm
Intensity Range 1 mW/cm² to 40 W/cm²
Resolution 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)
Floods/Conveyors
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)

Looking for additional technical specifications? Check out our Resource Library or talk with our technical experts.

Get in touch

How to Measure the Intensity of Your Spot Curing System

Measuring the UV intensity of a spot-curing system is important for maintaining the accuracy of the light-curing process. UV bulbs degrade with use, making it important to regularly check that the system is providing the intensity and dosage levels required for successful curing. A radiometer is used to measure the UV intensity of a light-curing system. For spot lamps, readings can be taken using a lightguide simulator or at the end of the lightguide. In this video, we demonstrate how to measure the intensity from the end of the lightguide.

The Benefits of Using a Radiometer

Radiometers measure the intensity of UV light energy. If you've ever wondered if you really need a radiometer for your UV/visible light curing application, this video is perfect for you.

Part Numbers

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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)

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

Global (CE Marked)

39561

ACCU-CAL™ 50 for Flood Lamps and Conveyors: Complete radiometer (without lightguide adapters or lightguide simulator*); includes storage/carrying case

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

Global (CE Marked)

39554

Flood to Spot Adapter Kit: Kit includes three lightguide adapters (3 mm, 5 mm, and 8 mm) and lightguide simulator*

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

Global (CE Marked)

39556

Lightguide Adapter: Fits 3 mm ID lightguides (5 mm OD)

Global (CE Marked)

39557

Lightguide Adapter: Fits 5 mm ID lightguides (7 mm OD)

Global (CE Marked)

39558

 Lightguide Adapter: Fits 8 mm ID lightguides (10 mm OD)

Global (CE Marked)

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)

Global (CE Marked)

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