Answer / papu

• Keep to standard engineering rules in planning the use
of and operating the device!
• Installation and intervention for maintenance work are
only allowed by qualified personnel using suitable tools!
• Observe the current regulations on accident prevention
and safety for electrical devices during operation and
mainte-nance of the device!
• Before interfering with the system, always switch off the
voltage!
• Note that in systems under pressure, piping and valves
may not be loosened!
• Take suitable precautions to prevent inadvertent
operation or damage by unauthorized action!
• After interruption of the electrical or pneumatic supply,
make sure the process is restarted in a well-defined,
controlled manner!

how to measure temperature from resistance of rtd?and how to measure temp from voltage of thermocouple?is there any formulas?

3 Answers  

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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

0 Answers  

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what is meaning of software redundency and hardware redundency?

2 Answers   Honeywell,

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How to consider the flow directions for control valve (Globe) Is the there any easy understanding in order to select the flow directions?

3 Answers  

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PLZ explain to me massflow

4 Answers  

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can anyone tell me about the basic concepts to consider before to start a PLC panel wiring

0 Answers   ABB,

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Can any body tell me about SAP MAINTINANCE MODULE. WHAT IS its function and application. And study material Source about it. I shall be very thankful.

0 Answers  

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what is the current pay package for an instrumentation engineer having 2 years of experience in cryogenic technology???????

1 Answers  

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Close loop and open loop diagram for instrumentation

1 Answers   Petron ltd,

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Is Hart communicator calibration device or communicating device for transmitter?

4 Answers   Yokogawa,

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how many type conductivity sensor ?

0 Answers   Process Automation,

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Describe how to calibrate various types of instruments and transmitters using ISA industrial consensus standard techniques.

4 Answers   Reliance,

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