HL-UC Desktop UVC Light Meter
Features
Gallium Nitride Based Material Photovoltaic Mode
Desktop/wall-mountable
Display the UVC radiation intensity and UVC dose for all-time
Only one buttons and easy to operate
Visual alarm indicates UVC reception
Application
Monitoring UVC Lamp Intensity & Aging
Measuring the radiation dose of UVC Lamp
Testing Eyewear UVC Blocking Capabilities
Measuring UVC Lamp Fixture Leakage
Device
1. Power button
2. UVC sensor
3. 5VDC Power socket
4. Display panel

Display
1. Radiation intensity unit
2. UVC radiation intensity
3. Radiation dose unit
4. UVC radiation dose

UVC Dosage
UVC dosage, also called “exposure dosage”, is a way to measure how much total UVC energy has radiated a particular surface. This is the most crucial element in UVC system design, because UVC dosage is the primary determinant in whether or not the UVC radiation have successfully achieved pathogen inactivation. This meter calculates the dose in real time and displays it in the screen.
UVC Dose formula:
UVC Dose (J/cm2)=UVC Intensity (W/cm2) x Exposure time (seconds)
Or
UVC Dose (µJ/cm2)=UVC Intensity (µW/cm2) x Exposure time (seconds)
The dose units’ conversions are as follows:
1 kJ/cm2=1000 J/cm2
1 J/cm2=1000 mJ/cm2
1 mJ/cm2=1000 µJ/cm2
Alarm
When the meter detects UVC radiation, if the radiation intensity exceeds 10 µW /cm2, the meter will flash a red light alarm every 2 seconds. It prompts the user that there is now UVC radiation detected.
Placement
HL-UC can be placed on the desktop; it also can be pasted onto the wall by using double-sided adhesive to stick the back of the meter.
Spectral Response

The peak point of spectral response is at 265 nm.
Specifications
UVC Specification
UVC intensity measurement range | 0 to 3500 µW/cm2 (0 to 3.5mW/cm2) |
Spectral detection range | 220 to 280 nm |
Peak point of spectrum | 265 nm |
Measurement accuracy | ±4% or ±1 digits |
Resolution | 1.0 µW/cm2 |
UVC dose measurement range | 0 to 999.99 kJ/cm2 |
General Specification
Operating | -10°C to 50°C (14°F to 122°F), 5~95% RH non-condensing |
Storage | -10°C to 60°C (14°F to 140°F), <99% RH non-condensing |
Power supply | 5.0VDC 1.0A |
Dimensions | 77x77x33mm (3.03x3.03x1.3”) |
Weight | 85grams (3.0oz.) without adapter |