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Thermal Detection provide the solution for sterilising items of plant with the temperature sensor remaining in situ.

The Serum Institute of India needed to be able to fit duplex PT100 temperature sensors to their Rütten Engineering 100 litre sterile flasks as a permanent fitment. The objective was to have a quick release plug and socket arrangement such that the PT100 plug could be left uncovered whilst the flasks were put through the sterilisation cycle.

 

Thermal Detection were able to meet the strict requirements laid down by the Serum Institute by supplying the SSA200 sterilisable PT100 probe assembly which had been originally designed for this type of application.

 

All the wetted materials of construction were in 316L stainless steel including the 6 pin male connector body with the seal being provided by a glass based dielectric which resists upper temperatures of 260°C and pressures as high as 69 bar. This glass seal is unaffected by steam or water and the pins of the male connector are gold plated nickel.  

 

The mating, quick release female connector is of the bayonet type and was manufactured in nickel plated aluminium. The signal transmission lead wires, which were Teflon insulated within a silicone rubber sleeve, were 3 metres in length and housed in a protective flexible conduit 7mm in diameter and also in 316L stainless steel.