The PLCD series detectors from Gigahertz-Optik Inc., Amesbury, Massachusetts, come with an internal amplifier and can be set up for common radiometric and photometric measurements like illuminance (lux) or UV-C irradiance (W/m²).

The sensor outputs currents (0-20 mA or 4-20 mA) over 10 scalable gain range options. The standard detector with built-in amplifier housing is only 37 mm in diameter by 25 mm in height, including the cosine diffuser. OEM versions in custom design housings, optical filtering and input optic to fit a particular application, are available.

One example is the PLCD-UV254 Radiometric Detector for UV-C 254 nm effective irradiance monitoring in UV-C disinfection of air, surfaces and water. The detector is equipped with a cosine diffuser covering a measurement range of 5 mW/cm² to 25 mW/cm². Traceable irradiance sensitivity calibration at 254 nm with certificate is provided by the company’s ISO/IEC 17025 accredited calibration laboratory.

For more information, visit www.gigahertz-optik.com.