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Why the Proximitor supply should be Negative voltage? Why should not we give Positive voltage to the Transducer?
6 16589Whether the DP transmitter can be utilised in the medium of Vaccum for the measurement of Level?
10 18935When 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 8283pls tell me whethere flame proof HMI's are available or every HMI is manufactured by considering flame proof standard.
3 6308plz you help about Que paper of mahagenco previous your,any model paper relad to it{maharastra power genration}
23771. 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 47108i 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 ?
2376Post New Instrumentation Questions
1. what is modbus cable? 2. what kind of communication we are using for the interface of DCS, ESD and Third party cabinets? 3. What is serial communication and peer to peer communication?
how can i calibrate the temperatuture gauge used by temperature bath(dry block) i mean step by step procedure?
1.what is the power consumption of three element drum level control in sugar industries? 2.how to reduce that?
Drum level tx with GP4 with zero elevation:7300mmh20 on HP and 8050mmh2o on LP as range but on commissioning the tx readiing is max,Why this reading?
what is the difference between -24 : +24 & 0:24 and where it use?
how to calibrate steam control valve in steam turbine
What is profibus?
What is PDS and PDMS ?
Why mixer nd grinder Is example of constant torque load not variable torque load ???
how to convert cubic metre per hour to newton cubic metre per hour
a flow transmitter [range-0-400mbar] connected in process line. please explain me how to calibrate the flow transmitter , & how to do static error
what is loop1 and loop2 in MTS LT?
how to work MIL contol valve posistioner ?
How the sizing of the analog signal cable is calculate?
key exchanges in wpa,wpa2,tls
