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IS-RPI is a recent development in intrinsically safe process control. The Pepperl+Fuchs IS-RPI (intrinsically safe remote I/O system) can easily be adapted to new or existing remote I/O applications and
P&F says that all currently available temperature sensors can be connected to its KFD2-UT-Ext1 universal-transmitter isolator. The many different input signals are converted by this intelligent device into
The Vibracon Namur limit switch has been specially developed for use with liquids in Ex areas. It is not sensitive to air bubbles or deposit build-up, regardless of whether it is used in turbulent liquids
While traditional proximity sensors often make use of plastic housings, or metal foil construction, which while quite practical for many less demanding roles in industry, will often show a shorter working
Causes of explosions
Three conditions must be present for an explosion to take place:
p Combustible material - gas, vapours, dust etc.
p Electrical or thermal energy - of sufficient value.
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