what is reset windup in integral control?
- 6 Answers
- 28644 Views
- Honeywell, I also Faced
- E-Mail Answers
Answer Posted / naveed ahmad
reset windup in integral control is using for removing
offset between process variable and setpoint. After
specific time it produe more signal to minimize the offset.
in pneumatic case
Extra signal depends on integral setting.MPR and RPM
due to reset windup controller output 'll goes equal to the
supply pressure (1.4 kg/cm2)or equal to dead zero (0
kg/cm2. Means cross the limmit (0.2 to 1 kg/cm2).
To keep in under limmit (0.2 to 1 kg/cm2) of controller
output normaly using anti reset windup.
Naveed Ahmad
instt.naveed@yahoo.com
+968-96045390
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
To become an Instrument DESIGN engineer, is there any softwares or training to become Instrument Design engineer, plz suggest me, Iam very much interested in designing.
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
1.what is controller proportional gain 2.what is the controller intergral action time. 3.A proportional plus derivative controller that has a proportional band of 20% and a derivative action time of 0.1 minutes. Construct the shape of the output waveform for the triangular input if the input rises and falls at the rate of 4 units per minute.
please send me some question papers of HPCL aptitude test ?? please send it to bipinb.28@gmail.com ...
on interface level transmitter model(RTG3302-EMERSON) What is threshold valve how can we select correct threshold value T1,T2,T3,T4 When interface water & hydro carbon
What is the principle of capacitance type level transmitter?
Do you have reference list?
hey any one got the papers of SAIL and HPCL plz do help me by posting them to my mail ID's naren07_87@yaho.co.in, surenarendra@gmail.com
Why do we have earthing cable in branch cable and shield in the same cable?
how works encoder in plc
what is the reset offset and control system in instrumentation
1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered 10.design a 10 bit counter ,which counter you will prefer 11.how to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason 18.how to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling
how can leve transmetter calibate in feild .and also put cv and flow plz .....
What are the application of bernoulli’s theorem?
If fire would be inside the plant which fire detector is to detected the fire.
