FMCW (Frequency Modulated Continuous Wave) Open Air Radar Level Measurement

Non-contact level measurement using radar transmitters for the continuous, contactless level measurement of liquids, pastes, granulates, powders and other solids in a wide variety of industries.

OPERATING PRINCIPLE

• The radar principle used is FMCW (Frequency Modulated Continuous Wave). The FMCW radar emits a high frequency signal whose frequency increases linearly during the measurement phase (called the frequency sweep). 
• The signal is emitted via an antenna, reflected off the product surface and received with a time delay, t. 
• Time delay, t=2d/c, where d is the distance to the product surface and c is the speed of light in the gas above the product. 
• For further signal processing the difference Δf is calculated from the actual transmitted frequency and the received frequency. 
• The difference is directly proportional to the distance.
• A large frequency difference corresponds to a large distance and vice versa. 
• The frequency difference f is transformed via a Fast Fourier Transformation (FFT) into a frequency spectrum and then the distance is calculated from the spectrum.
• The level results from the difference between the tank height and the measured distance.

Learn more about this technology by downloading the Drexelbrook DR Series brochure from this PSI web page.

For additional information, call Piping Specialties, PSI Controls at 800-223-1468 or visit their web site at https://psi-team.com.

Piping Specialties Valve Automation Services

By combining years of experience with the industries top manufacturers of valves, valve actuators, and controls, Piping Specialties has established itself as one of New England's premier valve automation centers. When it comes to design, fabrication, assembly and installation of any valve actuation/automation project, PSI's application experience, engineering know-how, and highly trained technicians makes them an easy choice to be your preferred valve automation partner.

For more information visit https://psi-team.com or call 800-223-1468.

Happy New Year from Piping Specialties!

Happy Holidays from Piping Specialties / PSI Controls

“Winter is the time for comfort, for good food and warmth, for the touch of a friendly hand and for a talk beside the fire: it is the time for home.”- Edith Sitwell

Custom 24" Pressure Balance Universal Elbow Expansion Joint by Hyspan

Elbow pressure balanced expansion joints (also known as corner relief expansion joints) are used on piping system where direction changes and the force exerted on piping and /or associated equipment from pressure thrust is intolerable. This arrangement uses dual connected bellows at line pressure acting in opposite directions.

Elbow pressure balanced expansion joints are designed to compensate for axial movement due to these external forces, thereby protecting the system. 

Hyspan, a world leader in the manufacture of bellows expansion joints, packed slip expansion joints and ball joints for industrial applications. Hyspan produces a complete line of flexible tubular products that meet the needs of diverse industries ranging from scientific research to oil refining.

The image above of a 24” NPS Hyflex pressure balance universal elbow expansion joint that is almost 15 feet long used in a geothermal power plant illustrates their ability to engineer and manufacture custom products to meet any need.

For more information about expansion joints or Hyspan products, contact Piping Specialties, Inc. by calling 800-223-1468 or visit their web site at https://psi-team.com.

We Take Pause and Thank Our Veterans

Veterans Day is not just another holiday. It honors those Americans who fought for our freedom. By celebrating our Veterans, we continue to tell the story of how this country became the most powerful on Earth - through bravery, honor, truth, and determination. 

Our Veterans are our neighbors, friends, family, and co-workers. They took an oath to defend the United States and our Constitution, from all enemies, foreign and domestic. We must never forget their bravery, service, and sacrifice.

PSI/Piping Specialties thanks our Veterans for serving our country and protecting our freedom.

Setting Up and Calibrating the Drexelbrook MultiPoint II Level Switch

This video demonstrates how to calibrate and set the Drexelbrook MultiPoint II level switch.

The Drexelbrook Multipoint II level switch product offers three control points located anywhere along a single vertically inserted level sensing element. This level switch can be used to provide high level, high-high level, and low level control points. It also provides an adjustable differential feature for one of the control points for pump on/pump off control making it ideal for sump level control. It is designed to be intrinsically safe for Class I Groups A,B,C,D and Class II Groups E,F,G (Div. 1 and 2). The unit is mounted in FM approved explosion proof housing. The MultiPoint II has no moving parts and the need for maintenance is therefore eliminated. The Drexelbrook MultiPoint II is an economical solution for processes requiring multiple operating points.

For more information about level instrumentation, contact Piping Specialties, Inc. / PSI Controls by calling 800-223-1468 or visit their web site at https://psi-team.com.