MHK-UC UVC Light Meter
Introduction
MHK-UC is a precise meter that measures ultraviolet UVC radiation.
UVC wavelength is 200-275nm, also known as short wave sterilization ultraviolet. UVC light applications are used for odor control, sterilization, and elimination of VOCs and industrial exhausts containing solvents. The use of UVC in odor control has many applications, including wastewater plants, farms, HVAC (Heating, Ventilation and Air Conditioning), and food processing plants.
Features
Gallium Nitride Based Material Photovoltaic Mode
Display the UVC radiation intensity and UVC dose for all-time
Simultaneously displaying ambient temperature and humidity
Application
Monitoring UVC Lamp Intensity & Aging
Measuring the radiation dose of UVC Lamp
Testing Eyewear UVC Blocking Capabilities
Measuring UVC Lamp Fixture Leakage
Testing UVC Intensity in Semiconductor Fabrication, Offset Printing, Environmental Monitoring and Industrial Process Control.
Device
1. UVC sensor
2. TFT display
3. Power button
4. Select button
5. Enter button
6. Battery compartment cover

Display
1. Battery gauge
2. UVC Intensity unit
3. UVC intensity value
4. UVC Dose unit
5. UVC dose value
6. Air temperature
7. % relative humidity
8. Maximum UVC intensity

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
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 |
Temperature Specification
Temperature Range | -10.0~60.0°C (14~140°F) display |
Display Resolution | 0.1°C (0.1°F) |
Display Options | °C/°F switchable |
Accuracy | ±0.5°C (±0.9°F) |
Response Time | 5~30 seconds |
RH Specification
Measurement Range | 0.0~99.9%RH |
Display Resolution | 1%RH |
Accuracy | ±4.5%RH |
Response Time | <8 seconds for 63% of step change |
General
Display | 2.2" TFT LCD |
Operating | -10°C to 50°C (14°F to 122°F), 0~90% RH non-condensing |
Storage | -10°C to 60°C (14°F to 140°F), <99% RH non-condensing |
Power Supply | Three AA Alkaline Batteries |
Dimensions | 74x148x26.5mm (2.91x5.83x1.04") |
Weight | 119 grams (4.2 oz.) without batteries |