In your own words, would you expect an ultrasonic level
device to work better in a pressure vessel with a high
pressure or a strong vacuum, and why?
Answer / pavan wagh
At high pressure in pressurized vessel ultrasonic signal gets suppressed substantially ,same is the case with strong vacuum where medium (air) of signal transfer is absent.
In both cases DP transmitter is the best choice for good accuracy. For level measurement with DP transmitter density compensation is essential,as liquid (water) density changes at high pressure and high temperature.
| Is This Answer Correct ? | 2 Yes | 0 No |
Punj lloyd is coming in our Jadavpur Universtiy campus for campus placement. Please send me some hints about the writtend exam. My email id is subratafriends@gmail.com
0 Answers IGL, Punj Lloyd Ltd, Shapoorji Pallonji Group(SPCL),
hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.
what are the types of a thermocouple
what difeerent between HART and BRAIN?
can i calibrate DP transmitter online (while Tx in Service) if yes ,how?
Describe all types and levels (4-20mA, 0-10V, mV, pulse, etc.)of analog and digital I/O used in process control application.
basic connection and principle of axial shift sensor n differential sensors in tubine describes n draw......
A temperature sensor (RTD) connected via a temperature transmitter is adjusted to give an output of 4ma at 60 deg and 20 ma at 600 deg. This output (4-20ma) from the transmitter is connected to an IGBT-inverter to control a high speed (-12,000 to +12,000 RPM) DC motor. And in the inverter it is programmed as, for 4ma the motor speed will be -3,000 RPM and for 20ma the motor speed will be +10,000 RPM. The question is : If the motor speed is +5,500 (RPM), what will be the temperature? (-sign indicates that the motion is in reverse direction).
Q- In the process of checking AC through Phase Tester our body is the part of circuit but we don't recevie Shock, Why ?
What is the difference between PLC-HMI and DCS as each function of DCS based system is possible in PLC ?
what is skin thermocouple?
Related to control system, What is difference between 4-20 mA active & 4-20 mA pasive signal.
Civil Engineering (5086)
Mechanical Engineering (4453)
Electrical Engineering (16638)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)