Wednesday, October 17, 2012
Quick Facts About Control Valves
Pressure Drop for
Good Control
·
DP = 30
to 35% of total dynamic drop for equal percentage characteristic valves
·
DP = up
to 50% for linear characteristics
Labels: control valve, epc-school, instrumentation, valves
Monday, July 2, 2012
Instrumentation Common Questions -3
EPC School Series 2012 Series
I for Instrumentation
Q: What are Analog Input/output & Digital Input/output?
4-20 mA signals from instrument (transmitters) are analog input to control system.
4-20 mA signals to instrument (I/p & electro pneumatic positioner) are analog output from control system.
Read more »I for Instrumentation
Q: What are Analog Input/output & Digital Input/output?
4-20 mA signals from instrument (transmitters) are analog input to control system.
4-20 mA signals to instrument (I/p & electro pneumatic positioner) are analog output from control system.
Labels: common interview instrumentation questions, control valve, engineering, epc-school, instrument questions, instrumentation, interview questions, Rahul Kapoor, temperature
Instrumentation Common Questions -2
EPC School 2012 Series
I for Instrumentation
Q: What is potential free contact? What is the significance and application of this contact?
Contacts having not potential. E.g. Relay contacts/ field switches contacts. They are used in logic circuits. A potential free contact is usually wired into an electrical circuit. However it must be ensured that the contact ratings are suitable for the service in which it is used.
Read more »I for Instrumentation
Q: What is potential free contact? What is the significance and application of this contact?
Contacts having not potential. E.g. Relay contacts/ field switches contacts. They are used in logic circuits. A potential free contact is usually wired into an electrical circuit. However it must be ensured that the contact ratings are suitable for the service in which it is used.
Labels: common interview instrumentation questions, control, engineering, EPC School, instrument, instrument questions, instrumentation, Interview, interview questions, Questions, Rahul Kapoor, transmitters, valves
“Tips & Tricks” on Control Valves
EPC-School Series 2012
I for Instrumentation
CONTROL VALVE
Labels: cavitating, control valve, detail engineering, epc-school, instrumentation, pressure regulators, technical, tips, tricks, valve
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