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plc is difinds as programmable logic controller

State four different types of flow measurement, for gas flow measurement MMSCFD is the common unit expand the unit and specify significance of word S in the unit.

2043

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field bus transmitter calibration procedure tell me

1830

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why any measurement made interms of pressure is more accurate ? to be more precise most of the flow velocity is made interms of pressure and it is accurate. what is the reason behind pressure measurement being accurate ?

1911

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sir, give me placement papers and interview quistion of birla group company of copper.

2859

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What is the function of solenoid valve in on/off & shutdown valve and why it is not used in control valve normally?

2025

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Coal mill Instruments Equipments for cement plant And process diagram ?

2928

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what is interface level and how it is calibrate?

2406

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what does it mean an active front end in vfd plz explain it briefly

1887

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2. What is ultrasonic flowmeter?

5095

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how many type conductivity sensor ?

2060

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Can anyone send most commonly asked interview question in Oil & Gas industry

2258

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i need some objective type questions in instrumentation

4901

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why we are not using the turbine flow meter in the steam service?

2215

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Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72

2218

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How do bending tubing provide better measurement than using tubing fittings such as elbows?

1943

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