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what is the use of impulse line in AFBC boiler , WHY WE CONNECT IMPULSE LINE TO TRANSMITTER , DRFT GAUGE ETC ????????
6 15757Why the industry's standard current standards are from 4mA to 20mA,not from 0mA or any other range?
3 7846We are using Rosemount 5400 series Radar Level Transmitters in all types of Sump Applications having oily water hdrocarbon petrochemical nature. What we are facing the problem frequently is that always getting reading frezzed at some value. If we do power recycling , sometimes it is working . then making same freezing problem. If anybody faced before such type of problem and also having solution , Please give the answer.
2382Post New Instrumentation Questions
How is automatic reference junction compensation carried out in temperature recorders?
Why we are using reverse action in displacer types level transmitters on some Vessels?
List three types Level Switches with their working principles
what is sliding spool valves?
can any one explain in which term we are flow flow is it volumetric r is it mass? and y
State some of balance principle’ advantages?
What is three element in drum level?
How we connect a instrument with ground, Give brief explanation with help of diagram?
draw shematic diagram of c/v positioner(smart type)?
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 types of Instrumentation Related Questions can an Interviewer ask in a Telephonic Interview ?
What is the use of temperature compensation?
Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =
How hart protocol can be connected with control valves?
Can anyone send most commonley asked Instrumentation questions and answers in cement industry please?
