I received this question from an Emerson Process Experts blog reader and DeltaV user who encountered a post on Rosemount 3051S Electronic Remote Sensors (ERS):
Is ERS Hart only, we have numerous 4-20 SIS shutdown functions on levels, and differential pressures, we also have FF levels and PDT's for indication and control, all with capillaries. I would love to be able to get rid of all them. Do you do the options I would need to replace them all?
I received this answer back from the Rosemount team:
The HART-enabled 3051S ERS system can be ordered from our published product data sheets. However, a FF [Foundation fieldbus] version is available by simply ordering a 3051S pressure transmitter with FF protocol and having either one of the transmitters or DeltaV compute the DP [differential pressure].
ERS is an ideal technology for long tap-to-tap spans and applications with severe ambient temperature shift, but capillary on a DP transmitter remains the best option on many high static pressure applications. Before we can verify if ERS can truly replace their capillary mounted transmitters, we would need to have their process details.
A good application article on ERS appeared in Intech magazine:
www.isa.org/InTechTemplate.cfm
It is amazing what you can do once you go with digital communication rather than 4-20 mA and on/off signals. Not just higher accuracy, but application flexibility. Inventory tank gauging went digital decades ago, now we are seeing it in process level too. The Rosemount Raptor system is another good example, taking it even further with the flexibility to use inventory level or process level thanks to open protocols.
In reply to Jonas Berge:
Nice Article Jonas. Didnt see this before
Anshuman Prasad
Director of Integrated Marketing, Rosemount Measurement and Analytical