i have 80cm water tank.how can i use DPT as level
mesurment.pls give specs for that..?
We have air comp.from that moisture comeout to one tank.i
want to mesure level of water in that tank and then after
operat one sov to dicharge water after high level.
TAKE TWO TAPINGS, ONE AT 5CM (HP SIDE)ONE AT 75 CM (LP
SIDE). NOW CONNECT THE DPT AS PER HP AND LP CONNECTION AND
IN Tx. ALSO DEFINED THE LSV AND USV IN Tx. IT WILL GIVE U 4
MA AT 5 CM AND 20MA AT 75 CM OF THE TANK LEVEL.
NOW THE SAME THING U CAN DO FOR THE COMP. MOISTURE LEVEL.
TO OPERATE SOV U HAVE TO USE THE ANALOG SIGNAL COMING FROM
DPT AND WITH USE OF THIS U HAVE TO GENERATE A DO COMMAND
(24V). THIS COMMAND WILL DIRECTLY GO TO SOV(24 V) WHEN
LEVEL IS HIGH.
SUPPOSE DPT TAG IS (PI01)
SET PI01.HH AT 75 CM.. AND USE THIS SIGNAL TO GENERATE THE
DO FOR SOV USING A SWITCH LOGIC IN DCS
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i have 80cm water tank.how can i use DPT as level mesurment.pls give specs for that..? We have air comp.from that moisture comeout to one tank.i want to mesure level of water in that tank and then after operat one sov to dicharge water after high level.
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 =