Showing posts with label Ashcroft. Show all posts
Showing posts with label Ashcroft. Show all posts

Tuesday, November 27, 2018

Differential Pressure Gauge Designed for Harsh Environments

Ashcroft F5509/F6509
Ashcroft F5509/F6509
The Ashcroft F5509/F6509 differential pressure gauges are used for monitoring differential pressure between two separate pressure sources. Designed for harsh environments, these models provide high reliability and safety. A perfect solution for challenging application and installation requirements.

The F5509/F6509 differential gauges are ideal where safe and reliable pressure measurement is essential:

Process Control Markets:
  • Refineries 
  • Chemical and Petrochemical Plants
  • Water and Wastewater Pressure Control
  • Mining and Metals
  • Filter, Level and Flow Measurement
For more information about any Ashcroft product, contact Swanson Flo by calling 800-288-7926 or by visiting https://swansonflo.com.

Saturday, May 20, 2017

Ashcroft Awards Swanson Flo Coveted "Distributor of Distinction Award"

For the fourth consecutive year, pressure and temperature instrument manufacturer Ashcroft, Inc. named Swanson Flo of Plymouth Minnesota the Ashcroft "Distributor of Distinction" for 2016. This award recognizes and honors Ashcroft Distributors who deliver exceptional growth, revenue, and commitment, and stands as Ashcroft's most respected and highest honor for their Distributors.

Swanson stood out from the pack in 2016 with a 17% increase in bookings over their previous year, despite a very tough economy for industrial distribution. Swanson Flo attributes the increase to their focus on developing new business at targeted accounts, increasing the size of their sales force, and turning up new applications at existing accounts.

From left to right:  Bill Johnson, Sales Manager, Western Division;
Robbin Jensen, Insides Sales Manager; Tom Howe, Owner/CEO,
Sandy Grinvalds, Ashcroft; and Sid Sondag, Director Sales & Marketing.

Sunday, April 30, 2017

Protect Your Instrumentation with Diaphragm Seals

Flanged diaphragm seal
Flanged diaphragm seal
(Ashcroft)
Pressure measurement is a common element of industrial operations and control systems. Fluid processing can often involve media that is potentially harmful to pressure sensing devices. The media may be corrosive to the sensor material, or other media properties may impact the performance or usable life of the instrument. In process control environments, diaphragm seals play a role in protecting items like pressure sensors from damage by process fluids.

The diaphragm seal is a flexible membrane that seals across the connecting path to a sensor and isolates the sensor from the process media. System pressure crosses the barrier without inhibition, enabling accurate measurement, but the process fluid does not. Typical materials composing diaphragm seals are elastomers, with a wide variety of specific materials available to accommodate almost every application.

In the operating principle of the diaphragm seal, the sealed chamber created between the diaphragm and the instrument is filled with an appropriate fluid, allowing for the transfer of pressure from the process media to the protected sensor. The seals are attached to the process by threaded, open flange, sanitary, or other connections.  Diaphragm seals are sometimes referred to as chemical seals or gauge guards. Stainless steel, Hastelloy, Monel, Inconel, and titanium are used in high pressure environments, and some materials are known to work better when paired with certain chemicals.
Threaded diaphragm seal
Threaded diaphragm seal

Sanitary processes, such as food, beverage, and pharmaceuticals, use diaphragm seals to prevent the accumulation of process fluid in pressure ports, a possible source of contamination. If such a buildup were to occur, such as milk invading and lodging in a port on a pressure gauge, the resulting contamination compromises the quality and purity of successive batches. Extremely pure process fluids, like ultra-pure water, could be contaminated by the metal surface of a process sensor. Some pneumatic systems rely on the elimination of even the smallest pressure fluctuations, and diaphragm seals prevent those by ensuring the separation of the process materials from the sensors.

Sanitary diaphragm seal with gauge
Sanitary diaphragm
seal with pressure gauge.
Diaphragm seals are not without some application concerns, and devices are now built to address and counter many potential issues related to the use of diaphragm seals with process monitoring instruments and equipment. Products seek to eliminate any and all dead space, allow for continuous process flow, and are self-cleaning thanks to continuous flow design. Some high pressure seals come equipped with anti-clogging features, accomplished by the elimination of internal cavities while protecting gauges. Multi-purpose seals reduce temperature influence and improve instrument performance while pinpointing and diffusing areas of high stress. These pre-emptive measures result
in longer instrument life-cycles and improved performance while ensuring protection from corrosion.

There are numerous options and available diaphragm seal variants. Share your application specifics with a product specialist, combining your own process knowledge and experience with their product application expertise to develop an effective solution.

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.