Emerson's Mobrey Horizontal Magnetic Float Level Switches Are Approved for Safety Instrumented Systems

SIL 1 suitable level switch is ideal for high and low liquid level alarm duties in the oil and gas, power, refining and chemical industries

AUSTIN, TEXAS - Emerson Process Management announces that selected models of its Mobrey Horizontal Magnetic Float Level Switches have been certified in accordance with IEC61508 to attain (Safety Integrity Level) SIL 1 for a single device and SIL 2 for a pair of devices.

Following successful third-party evaluation by global organization Exida, Mobrey Horizontal Magnetic Float Level Switches have the required Failure Modes, Effects and Diagnostic Analysis (FMEDA) report. The models assessed and certified are typically used in the oil and gas, power, refining and chemical industries, and are ideal for high and low liquid level alarm, overfill alarm, and pump control duties.

The use of certified devices provides a measure of quality and reliability, making it much easier to design and implement a safety system in process applications that must comply with the IEC 61508/61511 functional safety standard.

Mobrey Horizontal Magnetic Float Level Switches provide robust and reliable level switching in most liquids. The magnetically coupled design enables reliable operation even when operating in extremes of pressure and temperature. Measurements are unaffected by changes in process temperature, dielectric, or the presence of vapors and there is a wide range of flanges, floats and switching outputs to suit all types of liquid level application.

There are no glands or linkages that could cause leaks, or springs that require maintenance. The snap action mechanism ensures a clean make or break of the switch contacts and there is the option of a hermetically sealed switch mechanism to eliminate freezing and corrosion of contacts and all moving parts. Other options include versions with marine approvals and ATEX certifications for use in hazardous areas.

For more details and to download a copy of the FMEDA Report and the Functional Safety Manual which includes a list of the models covered by the certification, visit www.mobrey.com and click on "Safety" under Product Quick Links.

About Emerson Process Management

Emerson Process Management (http://www.EmersonProcess.com), an Emerson business, is a leader in helping businesses automate their production, processing and distribution in the chemical, oil and gas, refining, pulp and paper, power, water and wastewater treatment, mining and metals, food and beverage, life sciences and other industries. The company combines superior products and technology with industry-specific engineering, consulting, project management and maintenance services. Its brands include PlantWeb(TM), Syncade(TM), DeltaV(TM), Fisher®, Micro Motion®, Rosemount®, Daniel(TM), Ovation(TM) and AMS Suite.

About Emerson

Emerson based in St. Louis, Missouri (USA), is a global leader in bringing technology and engineering together to provide innovative solutions for customers in industrial, commercial, and consumer markets around the world. The company is comprised of five business segments: Process Management, Industrial Automation, Network Power, Climate Technologies, and Commercial & Residential Solutions. Sales in fiscal 2011 were $24.2 billion. For more information, visit www.Emerson.com


Peta Glenister, Emerson Process Management

+44 (0) 1753 756649,


Contact This Company

More from Mechanical Power Transmission

All Topics