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Why the Proximitor supply should be Negative voltage? Why should not we give Positive voltage to the Transducer?
6 16406Whether the DP transmitter can be utilised in the medium of Vaccum for the measurement of Level?
10 18610When a timer is placed in RS Logix 5000 with preset value less than its scan time it is malfunctioning. i.e., if the preset is set to 30ms still the timer TT bit is counting till 150ms(its scan time). Any solution for the problem?
2 8174pls tell me whethere flame proof HMI's are available or every HMI is manufactured by considering flame proof standard.
3 6187plz you help about Que paper of mahagenco previous your,any model paper relad to it{maharastra power genration}
23331. What means HART communicator / where it is used / how to use it? 2. Types of Thermocouples and its temperature ranges / output of thermocouple? 3. Types of RTDs and its temperature ranges / output of RTD? 4. Idea about Temperature Transmitters? 5. Difference between Analog and Digital signals? 6. Difference between “2 wire” and “4 wire” system / instruments? 7. Difference between “Potential” and “Potential free” contact? 8. Types of flow meters / transmitters? 9. Types of level transmitters? 10. Difference between “Power/Control” cable and “Instrument” cable? 11. What means “shield” and “screen” in cables / how it is useful? 12. Draw a schematic of closed loop circuit of flow / level / pressure / temperature? 13. Idea about calibration of Control valve / positioned / I/P? 14. How to bypass a digital/analog signal in PLC/DCS by hardwire and software?
JSL,
6 46885i 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 ?
2327Post New Instrumentation Questions
hello friends, can you please send me the model paper or question paper to be prepared for hpcl examinations????????? You can mail me at rahim_here@yahoo.com waiting for your reply........... help me .. plz.....
Galvanizing.
what is the criteria to decide conductor size of a cable ?
How to work temperature gauge?
TECHNICAL/ARTITUDE
Questions on flow meters,few questions on HART protocol,
I want to know about DDCMIS in detail ? please explain it. Also give name of reference books in which it is explained in detail in very simple manner.
How would you choose differential range?
How to decrease opening & closing time of on/off valve?
Explain an adaptive / self-tuning controller’s major draw card.
How can i test procedure grounding for CAT-7 cable? Or How can we test procedure CAT-7 Cable Electrically safe?
why we are using magnet for calibration of gas detector?
what is stroke check for field instument transmetter's & AOV's
How to erection of DCS Panel at site step by step
what is zero and span ?
