The vertical float level switch from Mobrey carries a stainless steel sheathed permanent magnet which rises and falls in the glandless pressure tube with changing liquid level.

Switching is achieved with the unique Mobrey "3-magnet" system, giving snap-action "latch-on" switching. A switch mechanism is mounted inside the enclosure adjacent to the pressure tube. Vertical movement of the float magnet in the pressure tube simultaneously actuates the secondary and tertiary magnets in the switch mechanism to operate the contacts.

The "3-magnet" system enables the float magnet to pass on and actuate switch mechanisms at other levels. Switch mechanisms already actuated cannot re-set until the return of the primary magnet actuates the magnet system once again.

All the models in the Mobrey range of float switches are available for use with the Rosemount 702 wireless discrete transmitter, allowing plant managers to cost-effectively access valuable data about the performance and safety of their plant.

Owing to the high cost of wiring, most process plants have hundreds or even thousands of discrete measurement points that are not connected to the control system. The advent of wireless communications allows process plant managers to save up to 90% of installation cost compared with wired technologies, enabling them to collect more data at central locations than has ever been possible before.

To find out more click on the link below:

http://www2.emersonprocess.com/en-US/news/pr/Pages/808-wireless-float.aspx