In a typical refinery, 10% of valves are actuated and 90% are manually operated. This poses a serious problem for end-users if the distributed control system (DCS) does not accurately know how many manual valves are opened or closed, which limits the efficiency of their business operations.
To meet this challenge, Rotork Gears has launched the SPI Smart Position Indicator, designed to provide a more robust, reliable and accurate solution. This solution enables a control centre to monitor any of the valves in a refinery, creating more accurate operational control.
Rotork has received an order for approximately 900 units from a Spanish end user.
The SPI has a large dial display to show the valve position locally and one or two internal switches or sensors for remote indication. The fully sealed aluminium enclosure provides an accurate and reliable valve position signal. For larger valves that are operated with a gearbox, the SPI is mounted to the gearbox input flange. For smaller valves it can be mounted directly on the valve and an optional thrust base is available for rising stem applications. The SPI uses the same ISO 5210 valve adaption as used for electric actuation, which is considerably more robust than alternative ‘arm’ methods.
Environmentally sealed to IP67, the SPI is available in two IECEx/ATEX Ex certified variants for hazardous areas; an Ex e ‘increased safety’ version for gas and dust applications, and an Ex i ‘intrinsic safety’ version for gas only. Additionally, a non-certified safe area version is also available. The SPI is easy to maintain and remains available in the event of failure.
Read the article online at: https://www.hydrocarbonengineering.com/product-news/19092017/rotork-launches-indicator/