J(NO2) and J(NO3) - Filter Radiometer
Filter-radiometers are available to measure photolysis rates of NO2 and NO3 . Filter-radiometers are available as 2-pi and 4 pi-instruments for use on the ground and in research aircraft. Signal output is an analog voltage.
- 2 pi and 4 pi –versions
- Aircraft - compatible versions
Calibration service of JNO2-filter radiometers and spectrographs
The calibration service is permanently available and instruments can be sent for calibration at any time of the year. The instruments are operated in parallel with our J(NO2) - master devices and with an absolutely calibrated actinic spectral radiometer at a mountain site. The master- spectrograph is calibrated regularly using a 1000 Watt FEL standard, NIST- and PTB- traceable. Spectrographs, sent in for calibration are absolutely calibrated with the 1000 Watt – lamp and in an atmospheric inter-comparison with our master-spectrograph.