About Vibrating Forks
Vibrating fork level switches and detectors from Emerson are ideal for all point liquid level applications.
Ensure safety and maximize efficiency with reliable and cost effective vibrating fork switches
This low maintenance device, designed around the tuning fork principle, provides you with point level detection for alarm, monitoring, and control.
Vibrating fork switches are reliable and perfect for overfill prevention, high and low level alarm and pump protection even in the most challenging of applications.
Emerson’s wide range of switches and detectors ensures that you will find the right device for your needs.
Click to continue reading Ensure safety and maximize efficiency with reliable and cost effective vibrating fork switches
How It Works
Rosemount 2100 Series uses vibrating fork technology. Designed around the tuning fork principle, it consists of a two-pronged fork which vibrates at its natural frequency. The frequency changes depending on the media in which it is immersed. When in air, the forks vibrate at their natural frequency. When liquid covers the forks, the frequency drops.
Changes to the frequency are continuously monitored by the switch electronics, which then change the output state to operate an alarm, pump, or valve.
The reliable vibrating fork switch is ideal for overfill prevention applications.
Emerson’s Rosemount 2120, Rosemount 2130 and Rosemount 2140:SIS are third party- certified according to the requirements of IEC61508, suitable for use in SIL2 systems.
The new-generation Rosemount 2140:SIS combines superior reliability, high diagnostics coverage and advanced proof testing.
Trust your overfill device will work when it is needed.
The ability to verify the integrity of your level switch is key, especially in safety critical processes.
Emerson’s Rosemount 2110, Rosemount 2120, Rosemount 2130 and Rosemount 2140 are equipped with a local test point, for quick and easy functional or partial-proof testing.
Emerson’s Rosemount 2140:SIS takes poof testing to the next level: A fully integrated remote partial proof test can be performed “in process” from the safety of the control room.
Many industries face tighter regulations and the hygienic sector especially. This is no issue for the Rosemount 2120 since compliance to the 3-A and EHEDG standards are confirmed by certification. Materials and processes also comply with requirements of ASME-BPE and FDA, allowing you to meet the most stringent requirements when hygiene and cleanliness are key.
The switch holds material certificates for all wetside parts and surface finish certificates for machined, polished and electro polished finishes. There are also intrinsically safe models with SIL certifications.
Rosemount 2160 combines Emerson’s wireless expertise and vibrating fork technology. It has all the features of the wired level switches and provides easy installation. No need for high infrastructure costs since the switch is totally wireless.
It communicates through Wireless HART and uses a replaceable, intrinsically safe Lithium-Thionyl Chloride power module with PBT enclosure. The battery can run for up to ten years at a one minute update rate.
Featured Videos
Case Studies
Learn how a chemical company achieved overfill prevention and reduced cost with our SIL2 Level Detector
See how an ice-cream producer reduced maintenance and improved quality with our vibrating fork level detectors
See how a customer achieved improved product consistency with Rosemount 2160 Wireless Level Detector
Additional Resources
Level Technology Advisor
Find the right device for your application with Level Technology Advisor
The Engineer’s Guide to Level Measurement
The definitive Engineer’s user guide for level projects in various industries
The Engineer’s Guide to Overfill Prevention
The ultimate guide for all your safety critical applications
Services & Consulting
Lifecycle Services
Maximize plant operating performance from start-up to shutdown with Emerson service technicians.
Project Services
Partner with our project management experts on product details and reduce project complexity.
Educational Services
CEU-certified standard and customized training for specifications, commissioning, and operations.
Consult an Expert
Consult an expert to learn more about Rosemount products
Contact Us
Identify local phone and address information for Emerson to talk more about Rosemount products.