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Posts Tagged ‘solenoid valve’

Inferring Aseptic Valve Diaphragm Maintenance

Posted in Final Control Element, Profibus on Thursday, December 6th, 2012. 2 comments so far
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Emerson’s Tom Holemans shared a recent problem-solving story with me about a pharmaceutical manufacturer’s desire to reduce aseptic valve maintenance costs and increase overall availability by switching from a preventive to predictive maintenance approach. As a process industry specialist with ASCO Numatics my role is to work closely with manufacturers to help identify ways we […]

Q and A on Digital Valve Controllers and Solenoids in Safety Applications

Posted in Final Control Element, Safety on Tuesday, August 21st, 2012. No comments yet
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A reader emailed some great questions to an earlier post, Clarifications on the Use of the DVC6000 SIS in Safety Applications. The post, featuring the thoughts of Emerson’s Riyaz Ali, addressed misconceptions about the use of digital valve controllers and solenoids in safety instrumented functions (SIFs). I turned to Riyaz to help me address the […]

Additional Clarifications on Digital Valve Controllers in Safety Applications

Posted in Final Control Element, Safety on Thursday, March 1st, 2012. 2 comments so far
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A few months ago, I attempted to clear up some misconceptions about the use of digital valve controllers in safety applications in a post, Clarifications on the Use of the DVC6000 SIS in Safety Applications. It addressed misconceptions about references to the obsolete DIN 19250 standard, failsafe DVC 6000 SIS, SIL 3 suitability not being […]

Clarifications on the Use of the DVC6000 SIS in Safety Applications

Posted in Final Control Element, Safety on Thursday, December 1st, 2011. 3 comments so far
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I had the chance to catch up with Emerson’s Riyaz Ali at the Emerson Exchange last month in Nashville. You may recall Riyaz from many process safety-related posts. In his conversations with process automation and safety professionals, he has been encountering some misconceptions he hoped we could clear up in this post. These misconceptions surround […]

Testing the Safety Valve in a Safety Instrumented Function

Posted in Emerson Exchange, Safety on Thursday, November 11th, 2010. No comments yet
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Safety instrumented functions (SIFs), also known as safety loops, are comprised of a sensor to sense the process condition, a logic solver to decide the safety action to take, and a final element to perform the action. Emerson’s Riyaz Ali and I & C Specialist’s C B Chakradhaar gave a presentation at the 2010 Emerson […]