Answer Posted / murali inst. technologist
if it is digital ie NO/NC touch the probe with hand then
relay with switch over,
if it is analogue keep sliding with hand on the probe from
bottom to top then controller indication will vary
Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
Why not come out analog output in ABB EL3020 when display show correct value
how u calibrate pneumatic n motorized c/v?
What inherent design and operating principles are included in a modern control system to use predictive maintenance practices to increase overall system reliability?
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 =
What is shielding effect?
Which are all the commonly used Bordon tubes in the pressure gauges. Do any one use ASTM A 312 tubes for this purpose?
Positioner usage.
what are the documents(Construction point of view for a process plant) submitted by contactor initially entering in to new site for client?
describe flow nozzel principle?
what is maxdna ?. explain about the software details.
Why is the orifice tab provided?
Draw block digram for well head from well to shipping pump?
How to interfacing microcontroller with a DC motor
whatis range of marcury filled tempereture gague
What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?