UVC Germicidal Radiation Meter

UVC254E UVC Light Meter

Keywords: UVC light meter, 254nm UV meter, UVC irradiance meter, germicidal UV monitor, UVC intensity tester

Narrow-band 254nm UVC radiometer for verifying germicidal lamp output and disinfection dose.

The UVC254E is a dedicated narrow-band UVC radiometer engineered to measure the 254nm germicidal wavelength emitted by UVC disinfection lamps. With a tight spectral window of 248–262nm (254nm peak) and a measuring range up to 39.99 mW/cm², it lets installers, facility managers and equipment makers confirm lamp intensity, estimate accumulated disinfection dose, and verify that installed UVC systems still deliver effective sterilizing radiation.

Its compact handheld body, single-button operation and clear digital readout make routine lamp inspection fast and repeatable, while the sub-0.1% stray-light rejection keeps readings trustworthy even around strong visible or broadband sources.

Key Features

1.  Narrow-band 254nm detection — spectral coverage 248–262nm centered on the 254nm germicidal peak for true UVC-only readings.

2.  Wide irradiance range — spans 1 µW/cm² to 39.99 mW/cm², suitable for both low-dose surface checks and high-power lamp verification.

3.  High stray-light rejection — parasitic light beyond the UV band is below 0.1%, so visible or broadband light will not corrupt the UVC value.

4.  ±8% measurement accuracy — reliable enough for lamp commissioning, acceptance testing and periodic re-certification.

5.  Portable and simple — handheld body with a 3× CR2450 lithium battery supply and 2 readings per second for quick on-site inspection.

How to Use

1.  Power on — insert the 3× CR2450 batteries and press the power button; the unit self-checks and is ready in seconds.

2.  Position the sensor — aim the detector at the UVC lamp at the distance and angle specified by the lamp manufacturer.

3.  Read the value — the screen shows the live UVC irradiance; the meter samples twice per second for a stable reading.

4.  Check overload — if the input exceeds range the display shows "OL"; move farther from the source or shield the sensor.

Technical Specifications

Applications

1.  Verification of UVC germicidal lamps in hospitals, laboratories and cleanrooms.

2.  Commissioning and acceptance testing of UVC air/ surface disinfection systems.

3.  Periodic re-certification of installed UVC fixtures to confirm effective sterilizing dose.

4.  R&D and quality control of UV sterilization equipment and lamps.