Valve position monitoring with the F31K2

F31K2 dual sensor, mounted on a pneumatic valve actuator

F31K2: the robust outdoor solution for Ex areas

F31K2 dual sensor with highly visible valve position indicator
F31K2 - the robust, impermeable, and durable sensor solution for valve position monitoring is now available with intrinsically safe Ex i approval for Zone 0/ Zone 20 gas and dust areas, as well as with Mb mining approval.

This generation of dual sensor from Pepperl+Fuchs uses non-contact and wear-free inductive sensor technology to monitor valve positions on pneumatic valve actuators, in the same way that this is used to monitor the rotation of fittings, valves, and flaps.

No mechanical contact is required. The sensor is mounted on the drive, and is hermetically sealed and separated from the actuator, which is simply fixed to the drive shaft using a screw.

The actuator is optionally available with a concise Open/Close valve display so that the valve position is easy to read, even from a great distance.

The two intrinsically safe NAMUR binary signals and the solenoid valve activation are conveniently connected via plug-in terminals in the terminal compartment.

The dual sensor is available with ATEX and IEC Ex global approvals for gas and dust areas, as well as a mining approval for underground applications.In addition, the sensor is also approved for functional safety applications up to SIL 2.

The high degree of protection IP66/67/69, combined with the -40 °C to 100 °C temperature range, and the impact-resistant housing (7 joules) makes this solution an extraordinarily robust, durable, and maintenance-free solution for both indoor and outdoor applications.

At a glance:
Open solution for valve position feedback with highly visible integrated valve position indicator.

Direct mounting on pneumatic valve actuators.

IEC Ex/ATEX approval for Zone 0 and Zone 20.

Weather-resistant housing for Ex outdoor applications.

Impact-resistant housing (7J) for Ex areas.

Designed for use up to SIL 2 in accordance with IEC 61508.

Tel: 0161 633 6431

Published in Valve User Magazine Issue 51

Winter 2019 // Issue 51
Read latest articles Pageflip Magazine Version Download Magazine