The April technology evening featured Alvin Seitz of Bürkert who outlined a fairly new flowmeter technology using surface acoustic waves (SAW). So, are SAW flowmeters the greatest thing since sliced Coriolis?
Ann de Beer (left) awards Alvin Seitz (right) the SAIMC presentation certificate.
Yes, and no. Yes they are multivariable devices, which give values for temperature and flow rate. And density sort of: they are capable of detecting changes in density, without giving a definitive value. This will almost certainly be improved as the technology matures. Still on the plus side, they are considerably cheaper than equivalent Coriolis flowmeters, and have a single, unobstructed tube, making them a good fit with the food and beverage or pharmaceutical industries. They also occupy far less pipe length and accuracy is quoted at 0,4% of reading at flow rates above 1 m/s.
No, they are not a direct replacement for Coriolis meters – yet. For one, they need 40 diameters of straight pipe upstream of the device. For another, the range is currently limited to line sizes from DN 15 to DN 50, but this will no doubt change over time. The accuracy of density measurement is something the R&D team is refining, but look out for future improvements.
There was lively interaction with the audience during the presentation and lengthy discussion afterwards. The branch thanks Alvin and Bürkert.
SAIMC: Secunda branch July 2019, SAIMC
, SAIMC May Technology Evening
On 16 May 2019 Kevin Preston from Phoenix Contact gave a very interesting and explanatory presentation on SIL (functional safety).
Safety Integrity Level (SIL) is by definition ...
Read more...SAIMC: From the President’s desk July 2019, SAIMC
On behalf of the SAIMC, I am proud to announce that there are multiple initiatives that have progressed well within our organisation: Automation as an engineering discipline in South Africa
As most ...
Read more...SAIMC: Vaal branch July 2019, SAIMC
The May Technical Evening was presented by Krzyszstof Lapacz from ifm – South Africa. He is responsible for business development and industrial networking.
Krzyszstof gave an in-depth technical presentation ...
Read more...SAIMC: Tshwane branch July 2019, SAIMC
The committee wishes to thank Nico Marneweck from Endress+Hauser for serving on the committee since the branch’s inception. Unfortunately Nico’s work commitments have changed and he is not available to ...
Read more...SAIMC: Durban branch July 2019, SAIMC
Durban branch held its June technology meeting at the Durban Country Club on Wednesday 5th June. It was another well-attended meeting with over 45 people in attendance.
Prinesh Mari, who is a senior ...
Read more...SAIMC: Johannesburg branch July 2019, SAIMC
, SAIMC SICK of safety regulations?
At the May meeting of the SAIMC Johannesburg branch held at SICK Automation, Stephen Eltze brought some fun into the safety discussion. As a nation of would-be taxi drivers, ...
Read more...SAIMC: From the President’s desk June 2019, SAIMC
We have reached the half-way point of 2019 and I am shocked at how time has just flown by for me personally. But, that is usually the result when you are fully engaged and busy with things that occupy ...
Read more...SAIMC: Durban branch June 2019, SAIMC
The May technology evening was moved out a day to accommodate the public holiday on 1 May and the topic of IO-Link attracted an excellent attendance at the Durban Country Club, in spite of the disruption ...
Read more...SAIMC: Secunda branch June 2019, SAIMC
On 4 April, Theo Wassenaar from Emerson Automation Solutions gave an informative presentation on ‘Steam trap monitoring with pervasive sensing and plantweb insight’.
Over the years, steam traps have ...
Read more...SAIMC: Vaal branch June 2019, SAIMC
At the last technology evening, Jacques Parrot, a project engineer from SICK Automation, gave an in-depth presentation on “Greenhouse phenomena and the looming legal requirements that emission producing ...