UV-Sensor  mit ¼'' - screw thread, ca. 30° opening angle 

options:

A1 -   quartz disc
D   -   attenuation-/spreading disc
Y1 -   integrated electronic voltage output, extended sensor housing
Y2 -   integrated electronic current output, extended sensor housing
C   -   with sensor circle-plug connector M12
B   -   sensor with UVC- filter