Testing & qualification
Here radiation is the test quantity, not the tool – from fluorescent penetrant testing through transmission measurement and light metrology to qualification in a regulated environment. A test becomes reproducible only with a documented spectrum, a defined geometry and traceable calibration.
UV measurement in medicine and GMP settings
Short answer: calibrated sensor, documented geometry, fixed interval
In a GMP environment UV measurements have to be traceable, documented and reproducible – from the calibration certificate to the measurement procedure. The article names the specific requirements in pharma, biotechnology and medical devices.
Validating UV reactors
Measurand: reduction equivalent fluence (RED) in mJ/cm² at the reactor
A UV reactor for drinking water is judged not by its lamp power but by the dose collected by the least favourably treated parcel of water. The article puts DIN 19294, ÖNORM M 5873, the EPA Guidance Manual and NSF/ANSI 55 side by side.
Fluorescent Penetrant Testing & Industrial Inspection
Measurand: UV-A irradiance ≥ 10 W/m², visible light per ISO 3059
In fluorescent penetrant testing the final judge is an eye or a camera – sensitive, but not calibrated. The article shows how UV-A irradiance, field uniformity and ambient light make the test reproducible.
Viewing conditions to ISO 3059
Whether a fluorescent indication is seen comes down to two numbers: the UV-A irradiance and the residual white light at the inspection station. The article sets out the ISO 3059 limit values, the requirements for UV-A radiometers and lux meters, and…
Laser Processes & Transmission Testing
Measurand: transmittance at the laser wavelength, scattered fraction
Transmission testing determines what fraction of the laser radiation passes through the transparent joining partner and arrives at the joint plane. The article explains measurement at the processing wavelength and its limits.
Photovoltaics & Solar Simulation
Measurand: spectral irradiance, uniformity, temporal stability
A solar cell is a spectrally selective converter, so a solar simulator has to match not just the power but the spectrum of the sun. The article explains spectral match, uniformity and stability under IEC 60904-9.
LED measurement
Measuring the spectrum, irradiance and luminous flux of UV, VIS and NIR LEDs – with SR900, RMD Pro, RMD Touch and integrating sphere. With a lamp comparison of halogen, fluorescent and LED.
