Why the Proximitor supply should be Negative voltage? Why should not we give Positive voltage to the Transducer?
6 14359Whether the DP transmitter can be utilised in the medium of Vaccum for the measurement of Level?
10 15782When 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 7072pls tell me whethere flame proof HMI's are available or every HMI is manufactured by considering flame proof standard.
3 5030plz you help about Que paper of mahagenco previous your,any model paper relad to it{maharastra power genration}
18851. 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 44971i 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 ?
1865Post New Instrumentation Questions
what is performance test.need defination
what is 24vdc live and dry supply
How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer
If we increase only P what will be controller action ?
Pressure tx shows 1 mbar but we need 1000 mbar at this process condition .. how can we sort it out .
How to calibrate Toxic gas detector?
whatis range of marcury filled tempereture gague
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What is the reason PT speed not incresed in gas turbine?
why we use impulse line of flow transmitter at 45 deg. angle both side of orifice plate.
what is the procedure to callibrate temp controller ,pressure controller,etc. suppose a temp controller showing error 1.5 degree centigrate how can i minimize it.
please tell me what is a light up procedure of Cfbc boiler and what it's axuillaries of cfbc boiler?
the output of the common trasmitter protocol in qatar gas are the following
How d.p. Transmitter can be applied to open tank?
I will attend an interview with GasGas company for a position of Instrument Technician ( Offshore )in next month can anyone tell me what questions they will ask. Thanks in advance.
