Answer / aftab ahmed mazari

There are mostly two types of magnetic pickups for speed
measuring.
1. Passive sensor
2. Actice sensor
In active sensor, hall effect is used to get frequency
signal.

Answer / mithilesh kumar

in power plant it's used for turbine speed(RPM).

what difeerent between HART and BRAIN?

3 Answers  

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What is Vena contracta?

3 Answers   CCIE,

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Basics Instrumentation Question

1 Answers   Advantek Fuel Systems,

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Give 2 application of quartz crystal used for process parameter measurement.

0 Answers   ADMA OPCO,

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what is sil (safety integrity level

0 Answers   Essar,

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How to fix back the valve actuator stem

0 Answers   SAFCO, Tarpon,

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Can anybody explain what is the different between ESD & PLC

1 Answers   ADCO,

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why we use 24 vdc in instruments mostly?

2 Answers  

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suppose in dcs range of a flow transmitter is 10t/hr what is dp for 50% in 2500mmwc

6 Answers   Chevron,

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suppose there is gas flow meter I want to know weather meter calibration is done at high pressure or low pressure? pls justify.

2 Answers   Siemens,

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what is thermo coupler and how it works

2 Answers   Tisco,

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can we connect instrument earth pit to electrical earth pit, if not why?

2 Answers  

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