EMKO Elektronik offers wide range of thermoresistance sensors with several types (PT100, PT1000), dimensions, fitting, output signal, cable length.
For further information about thermoresistance presented by EMKO see links below:

Thermoresistances

(RT) Standard Bayonet Type
(RTS) Bayonet Bore Type
(RTH) Air Bayonet Type
(RTR) Bayonet Type

(RTI) Inset Type / (RTIT) Inset Type with Transmitter
(RTKR) Terminal Block with Fittingnut / (RTKRT) with Transmitter, Fittingnut

(RTK) Terminal Block Type / (RTKT) with Transmitter

(RTKRI) Inset Type, Fittingnut / (RTKRIT) Transmitter with Fittingnut