Two Point Calibration of the Foxboro IDP-10-T Pressure Transmitter

The Foxboro / Schneider Electric I/A Series Electronic Pressure Transmitters are a complete family of D/P Cell, gauge, absolute, multirange, multivariable, and premium performance transmitters, as well as transmitters with remote or direct connect seals, all using field-proven silicon strain gauge sensors and common topworks.

A common HART electronics module is used for all HART Pressure Transmitters. Also, because all configuration and calibration data is stored in the sensor, you can replace a HART module with another HART module without transmitter reconfiguration or recalibration.

The video below provides step-by-step instructions for two point calibration of the IDP-10-T pressure transmitter.

Flowserve Limitorque WG Series Gear Operator Installation, Maintenance, and Operation Guide

WG Series Gear Operator
WG Series Gear Operator (Limitorque)
The most basic function of a valve is to be opened and closed, allowing or preventing a process media to flow. Gearboxes, such as the WG series, provide the mechanical advantage to make hand operation possible for most valves.

The Flowserve Limitorque WG series of worm gearboxes is designed for quarter-turn butterfly, ball, and plug valve applications as well as quarter-turn and multi-turn dampers and offers unsurpassed quality and longevity in a wide variety of weatherproof, submersible and buried-service applications.

The following installation and maintenance manual (IOM) explains how to install and maintain the Flowserve Limitorque WG operator. Information on installation, disassembly, reassembly, lubrication and spare parts is provided in the embedded document below.

Alternatively, you can conveniently download the Limitorque WG Series Installation, Operation, and Maintenance in PDF here.

Happy New Year from Mead O'Brien

With 2017 coming to a close, all of us at Mead O'Brien wanted to reach out and send our best wishes to our customers, our vendors, and our friends! We hope that 2018 holds success and good fortune for all of you.


Process Temperature Sensors: Basics of Thermocouples and RTDs

Industrial Thermocouple
Industrial Thermocouple
(Ashcroft)
Proper temperature sensor selection is key to getting useful and accurate data for maintaining control of a process. There are two main types of temperature sensors employed for industrial applications, thermocouple and resistance temperature detector (RTD). Each has its own set of features that might make it an advantageous choice for a particular application.

Thermocouples consist of a junction formed with dissimilar metal conductors. The contact point of the conductors generates a small voltage that is related to the temperature of the junction. There are a number of metals used for the conductors, with different combinations used to produce an array of temperature ranges and accuracy. A defining characteristic of thermocouples is the need to use extension wire of the same type as the junction wires, in order to assure proper function and accuracy.

Here are some generalized thermocouple characteristics.
  • Various conductor combinations can provide a wide range of operable temperatures (-200°C to +2300°C).
  • Sensor accuracy can deteriorate over time.
  • Sensors are comparatively less expensive than RTD.
  • Stability of sensor output is not as good as RTD.
  • Sensor response is fast due to low mass.
  • Assemblies are generally rugged and not prone to damage from vibration and moderate mechanical shock.
  • Sensor tip is the measuring point.
  • Reference junction is required for correct measurement.
  • No external power is required.
  • Matching extension wire is needed.
  • Sensor design allows for small diameter assemblies. 
RTD sensors are comprised of very fine wire from a range of specialty types, coiled within a protective probe. Temperature measurement is accomplished by measuring the resistance in the coil. The resistance will correspond to a known temperature. 

Industrial RTD
Industrial RTD
(Ashcroft)
Some generalized RTD attributes:
  • Sensor provides good measurement accuracy, superior to thermocouple.
  • Operating temperature range (-200° to +850°C) is less than that of thermocouple.
  • Sensor exhibits long term stability.
  • Response to process change can be slow.
  • Excitation current source is required for operation.
  • Copper extension wire can be used to connect sensor to instruments.
  • Sensors can exhibit a degree of self-heating error.
  • Resistance coil makes assemblies less rugged than thermocouples.
  • Cost is comparatively higher.
Each industrial process control application will present its own set of challenges regarding vibration, temperature range, required response time, accuracy, and more. Share your process temperature measurement requirements and challenges with a process control instrumentation specialist, combining your process knowledge with their product application expertise to develop the most effective solution.

Metso Neles T5 Series Top Entry Rotary Ball Valves

Metso's Neles T5
Metso's Neles® T5 series top entry rotary ball valves are designed to meet the requirements of chemical, petro-chemical and refining industries with improved process safety and efficiency of plant.

T5 series valves with famous trunnion mounted Stemball® design are suitable with wide rangeability for demanding heavy duty rotary control applications such as crude oil, hot residual oil, LPG and other hydrocarbon gases and vapors under medium and high pressures. 

Unique Stemball® design combined with anti-cavitation and low noise Q-trim technology are making the T5 series valve most suitable with wide rangeability for demanding control applications like anti surge and blow down services. The new high noise reduction Q2-trim is available for gas applications.

Process Control Basics: The Underlying Principle Behind Coriolis Flowmeters

The Coriolis effect, a derivative of Newtonian motion mechanics, describes the force resulting from the acceleration of a mass moving to (or from) the center of rotation. As this video demonstrates, the flowing water in a loop of flexible hose that is “swung” back and forth in front of the body with both hands. Because the water is flowing toward and away from the hands, opposite forces are generated and cause the hose to twist. Coriolis flowmeters apply this principle to measure fluid flow.


For more information on any process flow application, contact Mead O'Brien by calling
(800) 892-2769
or by visiting https://www.meadobrien.com.

Pharmaceutical and Biotech Valve Communication Networks

Valve Communication Networks
Valve Communication Network
Pharmaceutical and biotech companies are facing increasing competition, driving their need for increased efficiency, reduced costs, and agility.

Automated valve systems that help reduce installation costs through easy set up, faster commissioning, and enhanced valve identification are being embraced in these industries. Features such as bright electronic indication, combined with optional remote wireless access systems, provide enhanced risk management and improved safety, which subsequently lowers overall cost.

Demands for higher product purity and productivity is pressuring Pharma and Biotech companies to make investments in new technologies that deliver improved quality and competitive agility. Process control systems, and specifically valve communication systems, are evolving to support these changes. The most significant changes to valve communications systems are:

Size

Valve communication modules that offer smaller, lighter and more durable form factors, and modules that conform to the needs of moveable process skids and flexible manufacturing provide operators are very popular in these industries. Also, the use of integral solenoid valves lessen the amount of tubing and cabling required for valve packages, affording smaller overall envelope sizes on skids.

Precision

Solid state continuous sensors increase reliability and provide precise position measurement compared to legacy mechanical or proximity-reed technology. These solid state sensors also allow for more sophisticated valve diagnostics, leading to reduced maintenance costs over the valve system's life cycle.

Predictive Maintenance

The information available for critical valve operating parameters allow operators to see potential problems early, thereby reducing the risk and potential expense from lost production and downtime. Remote valve function monitoring, which includes sensor temperature and cycle count, extends the life of critical valves and helps maintenance staff circumvent a problem before it causes a dangerous situation.

Improved Safety

Axiom
StoneL Axiom
Wireless communications and control modules allow operators to access difficult to reach valve systems safely, securely and conveniently. Critical situations are known and dealt with immediately from safe locations, and away from potentially dangerous areas or circumstances.

Remote Access and Data Collection

Typical modern valve communication networks provide tremendous advantages over traditional valve monitoring systems, namely:
  • Access devices up to 50 meters, depending on obstructions
  • Monitor on or off line and set open and closed switch positions
  • Monitor and set the network address
  • Operate solenoid valve(s) (if network- or power supply-enabled)
  • Identify model and serial number (preset from factory)
  • Identify valve automation components (entered by valve supplier)
  • Log maintenance information
  • Monitor diagnostics (valve cycle count, electronics temperature, and more)
  • Lockout of settings automatically when in operation
Solutions

Prism PI
StoneL Prism PI
Combining components such as StoneL’s Prism or Axiom platforms with a DeviceNet or AS-Interface protocol system to interconnect your automated valves will lower your construction costs and install faster than conventional systems. Additionally, using valve monitoring apps such as StoneL Wireless Link with standard iPads or iPhones provide further cost savings and security is assured. Maintenance schedules based on calendar days are no longer required - with access to cycle count data, you can perform valve maintenance when it is truly needed and replace parts prior to wearing out.
StoneL Wireless Link
Example of StoneL Wireless Link on iPhone.
To discuss any valve networking application, contact Mead O'Brien by visiting https://www.meadobrien.com or by calling (800) 892-2769.