Control System World

Rosemount Analytical’s 700XA Process Gas Chromatographs provide extended analysis for extreme conditions. The 700XA offers increased analytical capability, reliability, and maintainability, combined with a wide range of analysis options in a field-mounted gas chromatograph (GC).

With a redesigned, single-cast enclosure, the 700XA offers an efficient use of oven space to accommodate both micropacked and capillary columns, as many as four 6-port or 10-port valves, a rotary valve for liquid injections, up to two thermal conductivity detectors, and an optional micro flame ionization detector (μFID). With a significant reduction in internal cabling, the 700XA allows maximum access to valves and internal components, making maintenance quick and easy.

The 700XA Process Gas Chromatograph is designed for a variety of refining, petrochemical, power, and environmental applications where selected components in gaseous or liquid streams must be precisely monitored on a continuous basis.

700XA Process Gas Chromatograph

By Sierra Instruments: When it comes to metering natural gas, you’ve got several flow meter options. However, thermal mass flow meters offer three distinct advantages over more traditional flow meters:

1. No moving parts. As you can probably guess, moving parts can cause problems over time due to wear, lubrication and coating sensitivity. For example, turbine meters offer excellent accuracy, but they can easily be contaminated by dirt or rust, which is common in gas pipe lines. In addition, clearance for moving parts can result in slippage of the flow you’re trying to measure. These issues can be avoided when you choose a thermal flow meter.

2. Can accurately measure flow over large ranges. Thermal meters can measure almost to zero flow. This can be vital in determining leaks or small usages like pilot lights. More traditional meters (like bellows or turbines) need enough flow to start the wheels or blades rotating, while differential pressure devices (like orifice plates) need enough flow to cause a measurable pressure drop. Thermal meters require neither.

3. Long life and high reliability. Sierra’s patented Dry-Sense® immersible thermal sensor has no moving parts, contains no epoxies or other compounds that will degrade over time and draws only a few milliamps of current. As such, Sierra warranties it for a lifetime of performance. Coupled with Sierra’s superior calibration technology and the ability to field-validate the meter, the Sierra Steel-Mass® 640S offers the most reliable solution for natural gas measurement.

Whatever your industry – automotive, utility, petroleum and gas, HVAC, or R&D – a thermal mass flow meter will deliver more accurate readings over a longer period of time than other metering options. And that, in the long run, equates to a more cost-efficient operation with fewer headaches.

Case Study by Rotork: Rotork’s latest electric control valve actuation technology has been selected for the automation of metering pumps in Group 2C hazardous areas in an automation project at an oil refinery in India.

Sixteen CVA (model number CVL500) linear actuators with IECEx international explosionproof certification have been ordered to control metering pump valve positions by means of a 4-20 milliamp signal and provide remote status indication. The actuators are also equipped with hand drive mechanisms to enable manual operation of the valves.

The innovative CVA is engineered to deliver high precision valve positioning and facilitate the tightest possible tolerances on the process variable in order to optimise process quality and output. On loss of mains power, built-in super capacitors enable the CVA to move the valve to a desired position, programmable as open, close, any intermediate position or stay-put.

Engineering and construction company Clough Limited (ASX:CLO) today announced that the BAM Clough Joint Venture has been awarded a contract by international oil and gas service company Bechtel, for the design and construction of the Chevron-operated Wheatstone Project LNG product loading facility and tug berths near Onslow, Western Australia. The contract is valued at approximately A$400 million.

The scope of work includes the design and construction of a 1.2 kilometre jetty with operations platform, a product loading platform with a single LNG and condensate load out berth, and associated piping modules and piping installation.

At peak, the contract will result in approximately 200 jobs, the majority of them in Australia. This includes 15 in the Pilbara region, 90 in Western Australia and 30 elsewhere in Australia.

Engineering, procurement and planning work for the project will commence in February 2012 with construction activities on site scheduled to start third quarter 2013. The project is scheduled for completion in fourth quarter 2016.

The IPS Power Monitor (model KW941) monitors and displays actual power to the rotating equipment. The IPS Power Monitor is equipped with a programmable startup delay as well as low and high trip points offering simultaneous protection from underload and overload operating conditions.

- Designed with Unique Features that enable monitoring of actual equipment power.

- Programmable Start-up delay with low and high trip points.

- Ideal for both Sealed and Sealless process pumps.

- Helps Eliminate Extensive Repairs and Downtime with proper application.

- Automatic Shut-down or Alarm Tripping can be achieved before damage occurs.

Houston, Texas — February 9, 2012 — KBR (NYSE: KBR) today announced that it has completed the registration and licensing of a new entity to carry out general engineering and project management services under the Saudi Arabian Oil Company (Saudi Aramco) GES+ initiative.

As part of completing the GES+ initiative, KBR acquired the business of Abdulhadi and Al-Moaibed Consulting Engineering Co. (AMCDE), a Saudi owned professional engineering company, and officially formed KBR-AMCDE. KBR will hold a 67% interest in this new entity. This new entity will provide front-end engineering and design (FEED), detailed design, procurement and project management services for Saudi Aramco. Initial staffing of the KBR-AMCDE enterprise is approximately 400 people.

KBR-AMCDE will perform the GES+ work under a five-year contract in support of Saudi Aramco’s Capital Program. This work will be performed from the KBR-AMCDE offices in Al-Khobar, Saudi Arabia. KBR also expects, over time, to use the KBR-AMCDE enterprise to perform engineering work outside the hydrocarbons sector in Saudi Arabia.

The Siemens Wind Turbines OPC Server from MatrikonOPC provides secure high-speed read and write access to Siemens Wind Turbines (SWT) from any OPC-enabled applications such as Historians, HMIs, and SCADA etc. The OPC Server for Siemens Wind Turbines communicates directly to the KK controller and bypasses the iBox. The communication mediums supported are Ethernet and Serial to provide flexibility in connectivity options.

This OPC Server supports the following devices:

SWT 1.3 62 MW

SWT 2.3 82 MW

SWT 2.3 93 MW

SWT 2.3 101 MW

SWT 2.3 113 MW

SWT 3.6 107 MW

SWT 3.0 101 MW

SWT 3.6 120 MW

The OPC Server for Siemens Wind Turbines supports tag-level security to grant and deny access to tags based on user login. This makes the Siemens Wind Turbines OPC Server a powerful tool to secure access to your Control and Automation systems and opens new connectivity horizons to other parties.

Wireless monitoring of instrumentation sensors such as temperature, flow, pressure, voltage, current, levels, weight, speeds, revolutions and others is a common requirement in the control industry. The term 'wireless' is used for any system used to transfer of information over a distance without the use of electrical conductors or 'wires'. The distances involved may be short (a few meters) like with a television remote or long (thousands or millions of kilometers) for radio or satellite communications. Wireless OPC solutions exist to meet all needs.

OPC and the Wireless Network:

In order to extend OPC connectivity beyond a wired LAN, complementary technology that effectively supports DCOM-style interfaces across wider network connections is needed. All that is required to support such technology is a TCP/IP-capable layer, which extends OPC communications over wireless networks. For many applications there is little difference between communicating over a LAN verses a WLAN.

To read in detail this article by MAtrikonOPC please click 'Wireless OPC'