Answer / nachiket dani

IP65 signifies total protection against penetration of dust
(first digit-6) and protection against water jets from any
direction(digit-5).It does not have a direct NEMA
equivalent but NEMA 5 devices are dust proof and NEMA 4/4X
can withstand water jets.So a device having NEMA 4/5 may be
said to be equivalent-although it is wrong.

I have seen the Temperature element (T/C & RTD) installed in process line on 45 degree position, Why? What it mean? How many types of tapping position for temperature elements?

4 Answers  

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What is the difference between EPROM & EEPROM.

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what is difference between differial pressure & delta pressure?

3 Answers  

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i have done DAE in Instrumentation and Process Control. i have applied for an apprentice training in chemical company after three day my interview will be conduct but i need more information about industrial process control and controller. my e mail is imran_dilsetu@yahoo.com please tell me interview question relative to instrumentation ?

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what is the difference between two wire transmitter and 4- wire transmitter

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On drum level, why we are using air to close Control valve?

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any one suggest me how to calculate percentage of air leakage with formula,

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What is fault tolerent system

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why the SCAN time of DCS is more & that of PLC is less? if the SCAN time of DCS then why we use DCS.

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How to work ultrasonic flow meter ?

1 Answers  

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