Showing posts with label instrumentation. Show all posts
Showing posts with label instrumentation. Show all posts

Simplifying Plant Safety instrumentation

White paper courtesy of United Electric Controls

Safety implementation typically is done by a group that includes plant instrument engineers and technicians, who are charged with finding simple and reliable solutions. Often, these situations involve the question of when to shut a process down. Such decisions frequently hinge on key process variables such as flow, level, temperature and pressure. these must be in a specified range at various locations within chemical and petrochemical plants, refineries and power plants, including everything from critical process vessels to eye wash stations.

For such point safety applications, a properly designed and implemented digital switch with self-diagnostics can be an important part of the answer. As an element of a multiple technology solution, a digital switch-based approach can help eliminate common-mode failures, significantly improve response time, achieve needed safety integrity levels (SILs), and simplify plant safety instrumentation.

To read the entire white paper, see the embedded document below:

Upgrading a Mechanical Pressure Switch to an Electronic (Solid State) Version

This video demonstrates how to upgrade from a traditional mechanical pressure switch to a solid state pressure switch.

The example here uses the United Electric Controls One Series as the example.

This type of product (One Series) allows you to choose from explosion-proof, intrinsically safe and energy limited models that monitor gauge pressure, differential pressure or temperature. With up to two fully adjustable set points and deadbands, available 4-20 mA analog output, and absolutely no moving parts. They are used in a wide variety of applications where mechanical switches are not considered.