Publicly Available Specification 55 is presently with the IEC in the ISO 5500n series of standards. The resulting standards will be similar to the ISO 9000 or 14000 series that have been widely adopted. PAS 55 addresses Asset Management.
The vast majority of field devices in use today have the capability to communicate the diagnostic information on their health and general condition. Unfortunately, it is estimated that 85 – 90% of this data is not being used as part of an integrated maintenance strategy.
The primary message being delivered by the champions of wireless is that it will enable full access to the rich information contained in today’s smart instruments and in particular the diagnostic information thus providing you the benefits of complete predictive maintenance. Of course it is never quite this easy.
The most common implementation of Industrial Wireless, especially WirelessHART is to install a “thumb” on the ‘spare’ outlet of a conventional HART transmitter so that the HART information can be accessed wirelessly practically anywhere. In my mind this is a step back because most control systems support HART communications directly...
The majority of new electronic field devices being installed today all have some form diagnostics capability and most of those also have some way of communicating their overall general health to another system that can make use of this information to improve overall plant reliability.
Control's ControlTalk author Gregory K. McMillan has put together a new book entitled "Essentials of Modern Measurements and Final Elements in the Process Industry." It is published by ISA Press and can be ordered from www.isa.org/books and from Amazon.com.
Yes, I said AvantisPRO 5.0. This is the latest version of the powerful asset management software suite that is a core product of Invensys Operations Management. It isn't quite out yet, but it will get its formal release at the Invensys user group meeting September 21.