Mechatronics Canada

May 12, 2022

 

MC Emersons New Emergency Shutdown Discrete Valve Controller 1 400

Recently, Emerson introduced the TopWorxTM DX PST with HART® 7. Units provide valuable valve data and diagnostic information, enabling the digital transformation of process applications. The new DX PST integrates seamlessly with existing valves and control systems, giving operators access to critical valve data, trends, and diagnostics that can be used to predict and schedule maintenance.

The DX PST’s partial stroke test ensures the system’s reliable function without shutting down the process. A safety feature that confirms the valve will fully close and stop the process if an emergency is detected, and the test is activated by simply pressing the local PST button — no additional equipment is required. To prevent critical failure in upset conditions, the unit will override testing to perform an emergency shutdown (ESD).

Certified for operation in harsh and hazardous applications, the adaptive DX PST is designed to ensure the integrity of valves, improving overall safety and facility uptime in oil and gas, refinery, chemical, industrial energy and mining applications.

“The digital transformation of the process industry continues to make operations safer and more productive,” said Prayag Vatsraj, Global Product Manager of Emerson’s Switchbox. “The DX PST with HART 7 supports digital transformation by providing reliable data that delivers valuable insight into the condition of valve assemblies that ensures the integrity of the system without shutting down the process.”

The HART® protocol, the specifications of which are owned by the FieldComm Group, builds another layer of information that ensures data, trends and diagnostics are monitored and tied into the Industrial Internet of Things. This information can be used to effectively predict and schedule maintenance.

Capable of Safety Integrity Level 3 (SIL 3), the DX PST is available with an integrated 2oo2 or 2oo3 solenoid valve redundancy when paired with ASCOTM Series Advanced Redundant Control System (ARCS) to further enhance safety and open terminals that allow an additional pressure transmitter along with two pressure switches. The discrete valve controller offers simple local and remote calibration.

 

To learn more about Emerson's new Emergency Shutdown Discrete Valve Controller, click here 

 

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MC PepperlFuchs Monitoring Condition of Plants w Vibration Sensors 3a 400

To enable long-term monitoring of vibrations, Pepperl+Fuchs recently launched a new portfolio of vibration sensors. You can find out what distinguishes these products in the following blog article. Using a wind turbine as an application example, we will also show you how you can use vibration and acceleration sensors in combination to keep an eye on both long-term and short-term changes in vibration.

The portfolio of vibration sensors

Pepperl+Fuchs has recently started offering a range of vibration sensors to perform reliable measurements of vibration velocity and acceleration in low or high frequency ranges. Compared to similar products, Pepperl+Fuchs’ vibration sensors have approvals up to SIL 2, a large measuring range of up to 128 mm/s, and automatic condition detection for ball bearings. Due to their robust housing and encapsulated electronics, the sensors impress with maintenance-free operation and a particularly long service life.

The three designs in the portfolio are available with different certifications and approvals. In this way, you can find the right vibration sensor for every application:

  • VIM3 series: The compact VIM3 series is suitable for applications up to SIL 1/PL c, and has output options for analog or IO-Link.
  • VIM6 series: The VIM6 series is approved for hazardous areas up to Zone 1/21. With an extended temperature operating range of -40°C … +125 °C, the sensors are ideal for high-temperature areas.
  • VIM8 series: Due to a particularly robust housing made of duplex steel, the vibration sensors of the VIM8 series are designed for use in offshore applications as well as in harsh and hazardous areas of Zone 1/21. Moreover, the sensors have an approval up to SIL 2/PL d.

 

Vibration sensors vs. acceleration sensors

Not only vibration sensors, but also acceleration sensors from Pepperl+Fuchs are used to measure changes in vibration: Both record the vibration acceleration in g. Nevertheless, the sensors differ in their technical operating principle and are therefore each suitable for different applications.

 

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