Process Control

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Tuesday, 11 August 2009

PIKOM PC FAIR 2009

Posted on 07:06 by Unknown

A few occasions will organize this week. I think this is the last events for PC Fair for this 2009. For those who still not grab this opportunity to shop or anything at a cheap price, then .................

13 August - 15 August 2009 (11:00am - 9:00pm)
· KB Mall, Kota Bharu - Kelantan
· Terengganu Trade Centre, Kuala Terengganu - Terengganu
14 August - 16 August 2009 (11:00am - 9:00pm)
· Persada Johor International Convention Centre, Johor Bahru - Jalan Abdullah Ibrahim, 80000 Johor Bahru
· Stadium Indera Mulia, Ipoh, Perak - Jalan Ghazali Jawi, 31400 Ipoh


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Friday, 26 June 2009

LG ARENA KM900 - I like this!

Posted on 19:32 by Unknown
LG ARENA KM900
Right out of the box the LG Arena looks trendy, with the dark grey polished metal exterior giving the phone a luxurious feel. Measuring 105.9 x 55.3 x 12mm, the phone is slightly smaller than the iPhone and feels solid when held. It sports a 3in colour TFT capacitive-based touchscreen that provides a sharp and lively viewing experience. LG Arena boasts the new S-class user interface (UI) that promises more fluid transitions, which results in better responsiveness that would ­certainly remind users of the iPhone. But the Arena doesn’t stop there. What you get is a breathtaking 3in screen, quality housing and a massive array of features that include a music player with Dolby Mobile, A-GPS, FM radio and even the not-so-standard FM transmitter. The phone also boasts myriad of wireless connectivity options including, quad-band GSM, EDGE, HSDPA, Bluetooth with A2DP profile and WiFi 802.11b/g. The Arena has a 5-megapixel camera with autofocus and flash that can capture still images at up to 2,592 x 1,944-pixels. It’s also capable of shooting video at 720 x 480-pixel ­resolution at 30 frames per second. The phone comes with a whopping 8GB of internal memory — that’s a lot of space to store your … http://lgarenakm900.com/




LG ARENA KM900 VIDEO - Enjoy....

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Friday, 19 June 2009

Introduction to Ultrasonic Doppler Flow Meters

Posted on 22:36 by Unknown
What is a Doppler Ultrasonic Flow Meter?

An ultrasonic flowmeter (non-intrusive Doppler flow meters) is a volumetric flow meter which requires particulates or bubbles in the flow. Ultrasonic flowmeters are ideal for wastewater applications or any dirty liquid which is conductive or water based. Ultrasonics flowmeters will generally not work with distilled water or drinking water. Aerations would be required in the clean liquid applications. Ultrasonic flowmeters are also ideal for applications where low pressure drop, chemical compatibility, and low maintenance are required.


PRINCIPLE OF OPERATION

The basic principle of operation employs the frequency shift (Doppler Effect) of an ultrasonic signal when it is reflected by suspended particles or gas bubbles (discontinuities) in motion. This metering technique utilizes the physical phenomenon of a sound wave that changes frequency when it is reflected by moving discontinuities in a flowing liquid. Ultrasonic sound is transmitted into a pipe with flowing liquids, and the discontinuities reflect the ultrasonic wave with a slightly different frequency that is directly proportional to the rate of flow of the liquid (Figure 1). Current technology requires that the liquid contain at least 100 parts per million (PPM) of 100 micron or larger suspended particles or bubbles.


ULTRASONIC DOPPLER FLOW METER SELECTION

The key questions which need to be answered before selecting an ultrasonic flow meter or doppler flowmeter are:

  • Does the liquid have particulates of 100 ppm of 100 microns in size?

  • Do you require a handheld or continuous process monitor?

  • Do you require an analog output?

  • What is the minimum and maximum flow rate for the flow meter?

  • What is the minimum and maximum process temperature?

  • What is the minimum and maximum process pressure?

  • What is the size of the pipe?

  • Is the pipe always full?



  • DESIGN VARIATIONS

    Clamp-on ultrasonic flow meters come in either single or dual-sensor versions. In the single-sensor version, the transmit and receive crystals are potted into the same sensor body, which is clamped onto a single point of the pipe surface (Figure 4-8). A coupling compound is used ultrasonically connect the sensor to the pipe. In the dual sensor version, the transmit crystal is in one sensor body, while the receive crystal is in another. Clamp-on Doppler flowmeters are subject to interference from the pipe wall itself, as well as from any air space between the sensor and the wall. If the pipe wall is made of stainless steel, it might conduct the transmit signal far enough so that the returning echo will be shifted enough to interfere with the reading. There are also built-in acoustic discontinuities in copper, concrete-lined, plastic-lined, and fiberglass-reinforced pipes. These are significant enough to either completely scatter the transmitted signal or attenuate the return signal. This dramatically decreases flowmeter accuracy (to within only ±20%), and, in most cases, clamp-on meters will not work at all if the pipe is lined.

    More details you can go to the website (http://omega.com).


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    Monday, 8 June 2009

    Fluke 99B Application?

    Posted on 22:01 by Unknown
    Fluke 99B

    You want to know more about this test equipment?
    click here... Fluke 99B, Fluke 99, Fluke 99

    or you can just google at internet...
    there are a lot of info you can get...

    p/s: Currently I am very busy with my daily job
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    Posted in Test Equipment | No comments

    Thursday, 28 May 2009

    Functional Safety - what is it all about?

    Posted on 21:56 by Unknown

    General

    Process plants, machinery and other equipment may, in the case of dangerous failures or malfunction, present risks to people, the environment and assets. Users have to evaluate these risks by means of a hazard and risk analysis. Depending on the resulting risk, measures for risk reduction by fault avoidance, fault detection and fault control have to be taken.

    The overall goal is to ensure that plant and equipment can be safely operated. Therefore, the avoidance of both failures of equipment and process control, which could lead to hazardous events, and dangerous undetected failures of protection systems, is of basic importance.

    Functional Safety is the part of the overall safety that depends on the correct function of safety-related systems for risk reduction. These systems have to carry out their intended functions (safety functions) under defined error conditions and with a defined high probability.


    Wherever risk reduction is implemented by means of process control, the components used have to meet the requirements of the international standard IEC 61508 (also available as DIN EN 61508, VDE 0803). This standard provides general specifications for avoidance and control of failures in electrical, electronic or programmable electronic devices. It includes both organisational and technical requirements for development and operation of safety-related systems. Safety integrity for equipment and risk reducing measures is specified as one of four discrete levels. Safety integrity level SIL1 is the lowest and safety integrity level SIL4 the highest.

    Increasing risk implies more reliable measures for risk reduction and, to the same degree, increased requirements for the components in use.

    For the first time, a standard requires a quantitative verification of the residual risk for the complete safety loop, consisting of sensor, controller and actuator.

    IEC 61508 also enables application sector specific international standards to be developed. For instance, IEC 61511 (also available as DIN EN 61511, VDE 0810) describes safety instrumented systems for the process industry. This standard is usually applied for SIL assessment of existing components by proven-in-use demonstration.


    SIL by default

    For a multitude of measuring tasks and measuring principles, Endress+Hauser presents evaluated or rather certified devices meeting these requirements, which can be used in safety-related applications. Here, the concepts and methods of IEC 61508 and IEC 61511 are applied to all relevant fields of process instrumentation. As a basic principle of Endress+Hauser, this is implemented with assistance and surveillance of third party consultants.

    The devices comply with the international state-of-the-art in conformity with individual national regulations and offer traceably higher quality.

    Endress Hauser

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    Posted in General | No comments

    Thursday, 26 March 2009

    Perlis Power CCGT Plant

    Posted on 08:04 by Unknown
    Perlis Power CCGT Plant

    Perlis Power CCGT Plant II

    Perlis Power CCGT Plant Under Contruction

    More data Perlis Power CCGT Plant are as below:
    • Mechanical and Electrical Erection Works for a 675MW 3X KA 13E2 Perlis Combined Cycle Power Plant.

    • Mechanical and Electrical Erection Works for 675MW 3X KA 13E2 Gas Turbines, Steam Turbine, Balance of Plant and Piping for Perlis Combined Cycle Power Plant.
    • Construction started in Feb 2002 and ended in Nov 2002.
    • Client: Alstom Power Asia Pacific Sdn Bhd
    • Peak manpower: 800
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    Posted in Power Plant | No comments

    Monday, 9 March 2009

    Asia's Biggest Oil & Gas Show - OGA 2009 On-line Registration

    Posted on 17:27 by Unknown

    Pre-registration is open to all trade visitors related to the oil and gas industries worldwide. Be amongst the first to meet up with big names like Aker Solutions, Cameron, Delcom, ExxonMobil, Global Process Systems, M3nergy, Scomi, Shell, Siemens, Technip, UMW Oil & Gas, Tanjung Offshore and Weatherford.

    Oil and Gas Asia 2009 (OGA 09), Asia's Biggest Oil and Gas will be held at the Kuala Lumpur Convention Centre (KLCC) from 10th till 12th June 2009. This show which will be the biggest ever in it's series of 12 shows, will spread across Halls 1, 2, 3, 4, 5 and also an additional hall built to cater for the overwhelming response, Hall 6.


    You are invited to pre-register on-line at www.oilandgas-asia.com. The deadline for pre-registration is 30th May 2009. After which, visitors will have to register during the show.

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