UVC Irradiance Meter
NIST traceable, hand-held UV light irradiance meter with an integral sensor. Compact and durable for single-handed use.
- Measure UV in the wavelength range of 246 – 268nm
- Measurements are shown in mW/cm2
- Supplied with certificate of calibration
Typical applications include monitoring drop off of UV bulbs and tubes and transmission testing of PPE, screens and guards.
Please note this meter should not be used for checking occupational UV light exposure, please contact us if you are looking to make health and safety measurements.
Features & Specifications
The UVC Irradiance Meter offers high precision in measuring UVC light intensity, specifically designed for monitoring germicidal and disinfection applications. This device delivers real-time data on UVC irradiance, allowing users to verify that systems are operating effectively for microbial control. Compact and user-friendly, it’s ideal for healthcare, laboratories, industrial sites, and HVAC settings where accurate UVC monitoring is critical. With its sensitive UVC sensor and durable design, this meter is an indispensable tool for professionals committed to UVC efficacy and safety compliance.
- Measurement of UVC irradiation level to determine the time to achieve a dose necessary to inactivate (kill) specified micro-organisms.
- Monitoring drop off of UVC light irradiance during the operating life of UVC germicidal bulbs and tubes.
The sensor consists of a Silicon Carbide (SIC) photodiode chip and a UV filter. It is completely insensitive to UV and visible light longer than 280nm and infrared radiation. The meter’s spectral response only covers the UV region from 245 – 270nm.
To operate your UV meter, aim the sensor window located on the top panel of the meter directly at a UV source. Press and hold push-button switch on the face of the unit. Aim sensor window in the top panel of meter directly at UV source. Note reading on LCD and record if required.
The battery operation voltage is 9V down to 6.5V. Below 6.5V the LCD numbers will begin to dim, indicating the need for a battery replacement. Under “typical” service load, the battery should last about 2 years.
- Wear eye and skin protection when checking UV lamps (a face shield that provides wrap-around protection is ideal).
- Allow lamps to warm-up prior to taking readings (at least 5 minutes).
- When comparing different types of lamps consider readings to be relative rather than absolute.
- Lamps that peak near 255 nm (newer designs) will read higher than lamps that peak near 265 nm.
- Do not subject the meter to extremes in temperature, humidity, shock or dust.
- Use a dry, soft cloth to clean the instrument. Keep the sensor free of oil, dirt, etc.
| Measurement unit | mW/cm2 |
| UV spectral response | 246 – 268 nm |
| Peak response | 250 – 260 nm |
| Measuring range | 0 – 19.9 mW/cm2 |
| Display graduation | 0.1 mW/cm2 |
| Display | 3.5 digit LCD |
| Weight | 128 g |
| Dimensions | 105 mm x 60 mm x 3 mm |
| Operating temperature range | 0 – 37oC |
| Operating humidity | 5 – 80 & RH |
| Power supply | 9 V battery |
| Sensor | GaAsP photodiode |
| Accuracy | + / – 10 % Ref NIST |
| Calibration interval | 6 – 12 months depending on usage |
Health and Safety Services
The health and safety services we provide are all designed and tailored specifically to your organisation to help you achieve compliance with this lesser-known area of health and safety in the workplace.
From site reviews, assessments to risk management training and specific training for employers & employees you can rest assured that we can guide your organisation to achieving compliance and control your risks.
See our health and safety services here or call 01787 370187 or email sales@uv-light.co.uk.