Your search for "endress+hauser hygienic conductivity sensors" revealed the following:

Endress+Hauser Prosonic FDU91 ultrasonic sensor for non-contact level and flow measurement
Endress+Hauser CYR51 mechanical cleaning unit for optical sensors
Endress+Hauser CYR51 automatic mechanical cleaning unit front view
Endress+Hauser Memosens CCS58E ozone sensor
Endress+Hauser CCS58E Memosens digital ozone sensor
Endress+Hauser CPL51E digital pH sensor
Endress+Hauser CPL51E Memosens digital pH sensor
Endress+Hauser CUS52D digital turbidity sensor
Endress+Hauser CPS42E digital ORP sensor
Endress+Hauser CPS42E Memosens digital ORP sensor
Endress+Hauser CPS72E digital ORP sensor
Endress+Hauser CPS72E Memosens digital ORP sensor
Endress+Hauser Ceraliquid CPS41 analog pH sensor
Endress+Hauser CPS41 analog pH sensor front view
Endress+Hauser COS61D optical oxygen sensor
Endress+Hauser COS61D Memosens digital oxygen sensor
Endress+Hauser CM82 Liquiline compact transmitter
Endress+Hauser CM82 Liquiline digital transmitter
Endress+Hauser Memosens CPS11E digital pH sensor
Endress+Hauser CPS11E Memosens pH sensor
Endress+Hauser CAS51D digital nitrate SAC sensor
Endress+Hauser QWX43 Fermentation Monitor