Disqus - Latest Comments for JimCahill

Re: Laser-based Microleak Detection Improves Aerosol Production Efficiency and Product Safety

Jim Cahill — Wed, 27 May 2026 11:53:44 -0000

Hi Armin, I caught up with Graeme. He shared with me that yes, this system is certified for use as part of a waterbath alternative process in conjunction with pre-pressure tested cans and associated quality management system.

Re: Control Loop Foundation Learning Website

Jim Cahill — Mon, 18 May 2026 09:57:28 -0000

Yes, unfortunately this site is no longer available.

Re: Moving Beyond Local Pressure Gauge Readings

Jim Cahill — Mon, 23 Feb 2026 14:45:35 -0000

Hi Neal, thanks for your comment. Let me check with our pressure measurement team. You can also reach out in a chat session on Emerson.com or send an email to our pressure measurement specialists at RMT-NA.SpecialistPressure@emerson.com .

Re: Positioners and Partial Stroke Tests in Safety Applications

Jim Cahill — Thu, 08 Jan 2026 14:38:03 -0000

Hi Sagar, I checked with Riyaz Ali , and here is how he reply back to me about your question.

SOV health monitoring can be done by innovative patented technology from DVC6200 SIS, which can deterministically test the plunger stuck condition of SOV. In this case, Logic Solver pulses the SOV momentarily and DVC picks up the differential pressure blip to record the event in its NVM (Non Volatile Memory).

Here is a technical write-up on how it works.

We also have added technology within DVC6200 SIS, which can initiate pulse on its own to SOV pneumatically mounted in series, downstream to SOV. In this case, Logic Solver pulsing is not required. If you need more technical details, I would be glad to share.

I've added a link to Riyaz's LinkedIn profile if you want to reach out directly to him.

Re: Answers to Coriolis Meter Drive Gain Diagnostic Questions

Jim Cahill — Tue, 07 Oct 2025 14:28:31 -0000

Hi @Rami, Can you forward this question to our Coriolis experts at flow.support@emerson.com ? They will have your email address to respond directly back to you. Thanks!

Re: Modern Burner Management Control and Optimization

Jim Cahill — Tue, 09 Sep 2025 20:02:17 -0000

Hi Mohamed, I heard back from Steven and wanted to share his response.

"The exact rules around voltage vary between the codes. For example, the mandatory text of NFPA 85 does not call out a specific voltage requirement, however the Annex material recommends safety controls to use at most 120 volts and has increased ground fault protection requirements for voltages above 50 volts. NFPA 86 and 87 explicitly restrict safety control voltage to 250 volts or less. All three texts allow both AC and DC current across their stated voltage ranges."

Re: Generator Excitation 101

Jim Cahill — Mon, 18 Aug 2025 11:20:14 -0000

Hi @Brian Johnston, I caught up with my friends in our Power & Water Solutions business regarding your questions. They also received your email. I'll post their answers here for others to see.

"
How does a wind turbine manage to produce compliant energy?
Modern wind turbines have a power converter connected to their AC generator that ensures a synchronous power output to match the grid’s 60Hz frequency. Look up “Doubly Fed Induction Generator” if you want to learn more.

How does PV solar create inertia to enter the grid?
PV Solar can’t produce synchronous inertia like a rotating turbine, however by using Grid-Forming Inverters, they can create a ‘synthetic inertia’ to mimic that capability. There are many videos on YouTube that explain how these ingenious devices work.

Where is the excitation and was told it was not required.
Not sure we understand your question, but taking a guess. The ‘Excitation” is created in the windings of a generator rotor by an external control and power system. Through extremely fast voltage signals, the system ensures the power output from the generator is at the prescribed setpoints for stable Active and Reactive Power.

Where is the synchronizing equipment and was told we run it up to speed and switch it on.
Not sure we understand your question, but taking a guess. To synchronize a generator to the grid often occurs in a control room or substation at the power plant. Using an electronic device called a Synchronizer, the generating asset’s output is matched to the grid’s frequency through pulse signals from the Synchronizer. On a turbine-generator, this usually requires the turbine to be rotating near synchronous speed (3600RPM) and once the phases are correctly matched, the generator breaker connecting to the switchyard is closed. The generator is then ‘loaded’ to push megawatts to the customers. Loading is essentially putting more fuel or steam into the turbine to create more mechanical power. Speed remains constant at 3600 sustained by the grid frequency.
"

Re: Engineer’s Guide to Tank Gauging

Jim Cahill — Mon, 30 Jun 2025 08:57:07 -0000

Hi Riaz, Could you send this to our Global Response Center team at ContactUs@emerson.com? They can connect you with a local sales team in your area.

Re: San Antonio—A Wonderful Venue for Emerson Exchange

Jim Cahill — Thu, 15 May 2025 09:23:17 -0000

Thanks, Prateek!

Re: Zedi On-Prem Versus Cloud-Based SCADA Podcast

Jim Cahill — Mon, 24 Mar 2025 16:12:44 -0000

Hola Amehed, por favor, hágamelo saber donde se encuentra y voy a tener el equipo de ventas local en contacto con usted.

Re: Safety Shutdown Valves with Quick Exhaust and Partial Stroke Testing

Jim Cahill — Tue, 29 Oct 2024 16:27:56 -0000

Hi Javier, I received a note back from Riyaz.

I think there are two different topics under discussion

* Use of VB in place of QEV, which may cause instability during PST through DVC.
* Second one is local control panel and diagram to depicting difference between conventional panel and Smart Control panel, saving considerable number of I/O’s

The schematics, shown in your previous post is with LCP100. Now we have LCP200 also released in addition to LCP100. Essentially number of I/O counts reductions remain same but additional features in LCP200.

LCP200 is posted on link below.
https://www.emerson.com/documents/automation/product-bulletin-fisher-lcp200-local-control-panel-en-4180936.pdf

Re: Downloadable Fisher Specification Manager Software

Jim Cahill — Thu, 08 Aug 2024 11:34:51 -0000

Henry, visit https://go.emersonautomation.com/FSMDownload to download. I just downloaded it and it started up OK for me. If it doesn't for you, connect with your Impact Partner or Emerson sales office, depending on where in the world you are located.

Re: Downloadable Fisher Specification Manager Software

Jim Cahill — Mon, 01 Apr 2024 09:12:52 -0000

The latest version is 2.22.01

Re: Downloadable Fisher Specification Manager Software

Jim Cahill — Fri, 29 Mar 2024 10:06:33 -0000

Hi Kalpana, I'm checking with the team in Marshalltown about this. I'll share what I hear back.

Re: How to Rotate a Coriolis Flow and Density Meter Transmitter Display

Jim Cahill — Fri, 09 Feb 2024 13:15:49 -0000

Hi Michael, Here's how our Flow Support team responded when I passed you question along:

"As long as we speak of a Coriolis, you can installed at any orientation as long as you have meter completely full.

We put recommendations on prefer sensor orientation but those are just recommendations."
https://uploads.disquscdn.c...

Re: What is My Pressure Transmitter’s Calibration Frequency?

Jim Cahill — Fri, 05 Jan 2024 10:45:56 -0000

Hi Aijaz, I received this response from our Rosemount Pressure Specialist team:

"These stabilities periods are simply the way we specify stability for the different sensor modules. They do not indicate that the transmitter doesn’t need to be calibrated during that full period.

Calibration frequency depends on several factors including application conditions and customer accuracy requirements. See page 87 of the 3051S manual linked below for an explanation of how to determine calibration frequency.

https://www.emerson.com/doc... "

Re: Downloadable Fisher Specification Manager Software

Jim Cahill — Mon, 17 Jul 2023 10:12:00 -0000

Hi Jessica, Send me an email at jim.cahill@emerson.com, and I'll connect you with one of our experts to work through this with you.

Re: How Coriolis Meter Drive Gain Indication Works

Jim Cahill — Thu, 06 Jul 2023 14:04:18 -0000

Hi Abdullah, can you email our flow support team at flow.support@emerson.com and share information such as installation pictures, model codes, serial numbers, configuration files, data longs, etc?

It could be something simple like incorrect configuration, or it could be something more complicated related to the application itself.

Re: How Coriolis Meter Drive Gain Indication Works

Jim Cahill — Thu, 06 Jul 2023 08:54:09 -0000

Hi Abdullah, I'm checking with our Flow Support team on this (flow.support@emerson.com).

Re: When is a SIL Suitability Rating Required for Final Control Elements?

Jim Cahill — Wed, 05 Jul 2023 09:35:09 -0000

Hi Jeffrey, thanks for your note and sorry for the delayed response as I've been away the last couple of weeks. Here's what Riyaz shared back with me. "'Final Element' of SIF loop consists of valve body, actuator, SOV, any other accessories, in the pneumatic loop, should be SIL suitable for use in Safety Instrumented Function (SIF) loop, with assigned SIL suitability target."

Re: Ultrasonic Precision Cutting

Jim Cahill — Sat, 20 May 2023 08:14:11 -0000

Ben, thanks for sharing these additional capabilities and benefits!

Re: Reducing Cavitation in Piping

Jim Cahill — Tue, 24 Jan 2023 09:45:33 -0000

@CuriousSan, Melissa shared back with me, "Thank you for the question. If there is cavitation damage, its location is mostly dependent on the geometry the flow is passing through. Often, the flow is skewed so that there is a high velocity/low pressure area. If this low pressure area is near a pipe wall, that is where the damage is more likely to occur. With valves, if cavitation damage is occurring in the downstream pipe and the valve is installed at a different angle, the damage would probably also shift by the same angle. In your situation, if your pumps have a similar geometry and are installed in the same orientation, it makes sense that the damage would be in the same location in the pipe directly downstream of the pump. It isn’t in that location because cavitation damage usually occurs at the 12 o’clock position, though, it’s due to the geometry of the flow path internal to the pump."

Re: Reducing Cavitation in Piping

Jim Cahill — Thu, 08 Dec 2022 09:30:26 -0000

Hi @CuriousSan , I'm checking with Melissa on this one... thanks!

Re: OSI monarch and CHRONUS demonstration

Jim Cahill — Mon, 08 Aug 2022 13:03:22 -0000

Rob, thanks for the catch! I've updated the post.

Re: Changing Guided Wave Radar Probe Length

Jim Cahill — Thu, 16 Jun 2022 08:58:14 -0000

Hi Karthikeyan, Send an email to our experts at RMT-NA.SpecialistLevel@emerson.com, Specialist-Temperature.RMT-AP@Emerson.com, Specialists-ProcessLevel.RMT-EUR@Emerson.com -- whichever is closest to your location to reach a specialist to help you with this issue.

Disqus - Latest Comments for JimCahill

Re: Laser-based Microleak Detection Improves Aerosol Production Efficiency and Product Safety

Re: Control Loop Foundation Learning Website

Re: Moving Beyond Local Pressure Gauge Readings

Re: Positioners and Partial Stroke Tests in Safety Applications

Re: Answers to Coriolis Meter Drive Gain Diagnostic Questions

Re: ​​​Modern Burner Management Control and Optimization​

Re: Generator Excitation 101

Re: Engineer’s Guide to Tank Gauging

Re: San Antonio—A Wonderful Venue for Emerson Exchange

Re: Zedi On-Prem Versus Cloud-Based SCADA Podcast

Re: Safety Shutdown Valves with Quick Exhaust and Partial Stroke Testing

Re: Downloadable Fisher Specification Manager Software

Re: Downloadable Fisher Specification Manager Software

Re: Downloadable Fisher Specification Manager Software

Re: How to Rotate a Coriolis Flow and Density Meter Transmitter Display

Re: What is My Pressure Transmitter’s Calibration Frequency?

Re: Downloadable Fisher Specification Manager Software

Re: How Coriolis Meter Drive Gain Indication Works

Re: How Coriolis Meter Drive Gain Indication Works

Re: When is a SIL Suitability Rating Required for Final Control Elements?

Re: Ultrasonic Precision Cutting

Re: Reducing Cavitation in Piping

Re: Reducing Cavitation in Piping

Re: OSI monarch and CHRONUS demonstration

Re: Changing Guided Wave Radar Probe Length

Re: Modern Burner Management Control and Optimization