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 or in viscous media.
The device is connected via a two-wire connection to a standard isolated switch amplifier with an intrinsically safe control circuit according to DIN 19234 (Namur). This means that the Vibracon is as easy to handle as a proximity switch.
The fixed error message 'line breakage' according to Namur allows safe signal transmission to the PLC or the control system. The simple and robust construction of the vibrating fork, made from stainless steel 318C17, without moving parts, allows the Vibracon to be mounted at any location. Using a test magnet, the level limit switch as well as the sequential circuit can be tested for proper functioning.
Control and monitoring with only one device Pepperl+Fuchs
IS & Ex
Pepperl+Fuchs has expanded its portfolio of K-System isolated barriers for DIN rail mounting (power rail) with the KCD2-SCS interface module. As the first 2-channel AI/AO intrinsic safety barrier with dual function, the module can be configured individually for analogue input or output control signals.
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Level Measurement & Control
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Level Measurement & Control
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The operators in a petrochemical refinery were having great trouble in trying to stabilise the condensate level in a vessel, and this was adversely affecting other loops downstream. Several unsuccessful attempts had been made to retune the controller.
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