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

Monday, April 16, 2018

Swanson Flo Markets - New Video

Here's a new short video highlighting the markets that Swanson Flo serves in the upper midwest United States.

Friday, March 30, 2018

Swanson Flo Performance - Full Capability Instrumentation and Valve Service & Repair

In-house repair as well as field service capabilities for process measurement and control.

Swanson Flo Performance supports every process control customer with region-based, full-capability service and repair. Both in-house and in-field. Built on more than 50 years of applications experience and technical knowledge.

  • From valves and instruments to actuation, fabrication and preventative maintenance. 
  • Our technicians are factory-certified. 
  • Shop is factory audited.
  • Total service for process measurement and control
  • Valve actuation facilities – the "Center of Excellence"
  • Instrument calibration, repair, and trouble-shooting services
Call 800-288-7926 or visit https://swansonflo.com


Wednesday, August 23, 2017

Pressure Instrument Calibration

Calibration of pressure instruments
Proper pressure instrument calibration is critically
important for safety and quality.
Calibration of pressure instruments in industrial environments requires the establishment of known pressure magnitudes. With a stable input pressure established, the pressure measurement instrument is provided with a referential benchmark that can be used to evaluate instrument output. There are several physical test standards or methods that can be applied to pressure instruments.

A deadweight tester, sometimes called a dead-test calibrator, creates accurately known pressure using precise masses and pistons of a known area. The gauge or pressure instrument is connected to the deadweight tester. The device is comprised of tubes that contain either oil or water, with a primary piston positioned above the liquid and a secondary piston across from the place where the gauge connects to the tester. A mass of a known quantity is placed atop the primary piston, which is perfectly vertical. The earth's gravitational field acts upon the mass atop the piston. The combination results in a known value being applied to the deadweight tester and subsequently allows for calibration of the gauge.
deadweight tester
Deadweight tester (Ashcroft)

Once pressure builds inside the deadweight tester, surpassing the weight of the piston, the piston will rise and float atop the oil. By rotating the mass atop the piston, the piston will rotate inside its cylinder and negate any impact from friction. Developments in technology have led to testers being equipped with hand pumps and bleed valves. The same principles applied to a deadweight tester which uses oil are applied to a pneumatic deadweight tester, where gas pressure suspends the mass atop the cylinder instead of oil or water pressure.

The manometer is another device which establishes a pressure standard to calibrate gauges. Alone, the manometer is simply a U shaped tube connecting a source of fluid pressure to the gauge being calibrated. Pressure applied to the gauge will be indicated by the corresponding heights of the fluid in the columns. If the value of the density of the liquid is a precise, known value, the aforementioned constant of the earth's gravitational field will combine with the applied pressure to permit calibration of the gauge.
Digital Test Gauge
Digital Test Gauge (Ashcroft)

Test instruments which couple with the calibration of pressure transmitters are also instrumental in ensuring correct pressure calibration. Electronic and pneumatic test instruments, along with precise air pressure calibration pumps, enable calibrating a pressure transmitter in place, in the field, or on a lab bench. These portable devices, though, require their own calibration to physical standards with referenced properties. While different devices exist for establishing pressure standards in either high or low pressure environments, the shared standard allows for varying types of instrumentation to exhibit similar performance quality and accomplish the same task.

Contact Swanson Flo for any pressure instrument repair or calibration requirement. Visit http://www.swansonflo.com or call 800-288-7926.

Monday, April 24, 2017

Measurement and Control Instruments for the Power Industry

Control Instrumentation for Power Plants
Coal fired power plant.
The coal-fired power generation and combined-cycle power generation industry now demands much more of its control and instrumentation suppliers. Common areas for use are fuel systems, fermenters, gas storage, water treatment, boiler feed water, boiler drum, steam line, cooling water system, generator, condenser, gas cleaning system, flue gas desulfurization, residuals storage and stack.

The document below provides a visual guide of common applications and the instrumentation products that have proven track records in those applications.

Thursday, March 30, 2017

Swanson Flo Performance Brochure

Swanson Flo specialize in valves, automation and instrumentation.  Swanson Flo Performance sets the standard for process control optimization and training that maximizes plant uptime, safety and operating efficiency.

Tuesday, March 14, 2017

Virtual Tour of Swanson Flo Illinois

Swanson Flo has facilities and teams of skilled experts who are uniquely equipped to rapidly combine resources and skills for the maximum benefit of their customers. As the company continues to grow, their investment in new technologies, equipment, facilities, and solutions demonstrate their commitment to build solid client partnerships.

The video below provides a virtual tour of our new Addison, Illinois warehouse, instrument calibration lab, and valve automation center.


For more information, visit Swanson Flo at http://www.swansonflo.com or call 800-288-7926.

Monday, February 27, 2017

Instrumentation Isolation Rings for Harsh, Viscous, and Sticky Pressure Applications

Isolation ring installed view
Isolation ring installed view (courtesy of Ashcroft)
Hard-to-measure fluids such as harsh acids and bases, slurries, adhesives, sludge, paint pigments, and mine slurry can quickly clog or destroy pressure gauges, switches, and transmitters.

For these kinds of applications, the instrument must be isolated from the process media by using a barrier that accurately transmits any pressure changes, while isolating the instrument from direct contact with the media being monitored.

When a pressure instrument is connected directly to a pipeline, solids from the process media can quickly plug the pressure port resulting in erroneous readings. The pressure port on diaphragm seals are prone to clogging too, and won’t solve the problem. The best solution is an isolation ring.

Isolation rings use a flexible inner liner backed with a clean, captive, non-compressible liquid. As the media flows through the pipe, the pressure exerted on the flexible liner is transferred through the liquid directly to the pressure sensing element of the instrument, keeping it completely isolated from the process media.

Isolation rings are designed to protect you from the challenges of clogging, plugging, corrosive media and pulsation. As professionals in the water and wastewater, pulp and paper, mining, and food processing industry know all to well, slurries and digestion processes can clog unprotected pressure instruments, resulting in dangerous conditions and down time.

Isolation rings prevent those problems by protecting the pressure sensing element from the medium. They're designed to overcome the most extreme applications and keep processes running day-in and day-out.

For more information on process instrumentation, call Swanson Flo at 800-288-7926 or visit http://www.swansonflo.com.

The video below gives you a quick look inside an isolation ring and shows how they are used.



Tuesday, November 1, 2016

Welcome to the Swanson Flo Industrial Control and Valve Automation Blog

Swanson Flo Headquarters
Swanson Flo Headquarters,  Plymouth, MN
We're building this blog to provide people interested in process control instrumentation, measurement & control, and valve automation a place to learn about interesting applications, new products, and basic knowledge.

The markets we are attempting to educate are the powergen industry, mining, water and wastewater, agricultural, chemical, food & beverage, pharmaceutical and OEM.

We'll do our best to provide weekly posts to keep the blog fresh and informative, and a place you'll want to check back with regularly.

The world of industrial control is changing rapidly in the United States, partially due to rapidly changing technology, or environmental and legislative pressures. We hope to provide helpful information, based on current realities, that will help solve real world process control problems