Interested to Buy Any Domain ? << Click Here >> for more details...
How can we check Zero of DP type Level Transmitter onside?
- 7 Answers
- 22582 Views
- Birla, I also Faced
- E-Mail Answers
Answer Posted / suresh agravat,jamnagar
first close the rootvalve then drain trhough needle velve
then close both LP and HP isolated valve and open equliser
valve
| Is This Answer Correct ? | 3 Yes | 4 No |
Post New Answer View All Answers
NPN transistor, SCR, Zener diode, LED, Varactor diode, Vortex meter, RTD, Resistor, Crystal
What is the use of each wire in three wire RTD
WHY THE DEGREE OF VALVE PLUG AND VALVE SEAT IS SLIGTLY DIFFERENT I CONTROL VALVE TRIM DESIGN
In turbine what does term CDP, NI, NH, HSSOC means.
, Instrument Index, P&ID review, I/O schedule, datasheet, DCS / Analyzers specifications, loop diagrams, hook-up drawings.
IS there any effect of vortex in low pressure side of the transmiter after the orific in feed water line? if yes then what is the calculation?
Tr. Wiring for calibration.
What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?
Isometric drawings are generated during _________________ phase of a project
What is difference between radial vibration and axial vibration explain in detail .
Please asked me How calculate DCS controller memory.
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 zero and span ?
How to convert milliampares into flow??
How to Calibrate Flow Switch in field
