What are Sinking and Sourcing IO Cards
Answers were Sorted based on User's Feedback
Answer / nirmalyabasu
If the power is comming through the i/p or o/p device to
the io card then that i/o card is called sinking i/o card.
And if the power is transfered from io card to the i/p and
o/p devices then the i/o card is called sourceing io card
Is This Answer Correct ? | 12 Yes | 1 No |
Answer / mun
sinking and sourcing is regards the current flow
so if the power from the card is called sourcing
if the power from out side the card coming to it called
sinking
Is This Answer Correct ? | 1 Yes | 1 No |
We do have a problem in the company that is one PT connected to PlC which is mean 1 out of 1 in PLC system we do have the PAHH is 55 mbar and PALL 8 mbar with a timer of 15 sec for the PAHH the problem started when PAHH goes more than the set point which is 55 it reached up to 71 but due to timer doesn't trip . We force it and we checked everything nothing there . We replaced the transmitter problem still there the reading goes more than the 55 bar the range for transmitte is 0- 60 mbar . So we did loop check , aculaizing valve , wiring all are okay . What the possible causes for this ???
2 Answers National Petrochemical Company,
given a processor batch of 1000 resistors moving on the conveyor belting in a large factory. the resistors is value at 10k ohms each but when the resistors reach the quality control, some of the resistor has been rejected caused by failure in manufacturing.the high quality measurement is used to determine the failure. describe the instrumentation terminology in measurement of a system above with explaining the important in:- -reliability -sensitivity -repeatability -precision -range -resolution -linearity -hysteresis -error -accuracy (answer must related to the scenario above)
In control valves (like feed water control valve) we will give 3 kg pressure and how it controls 110 kg of water pressure?
how many type of plug are used in pneumatic control valve,name them.
State four different types of flow measurement, for gas flow measurement MMSCFD is the common unit expand the unit and specify significance of word S in the unit.
How would you choose differential range?
What are the questions asked in fresher instrumentation candidates
Convert a pressure, level, flow, or temperature process variable value into the appropriate pneumatic or electrical value given different types of instruments.
6 Answers Jindal, MCL, Thermax,
what is electric motorised valve working principle.
WHAT IS TMXT IN TEMPERATURE FOUNDATION FIELDBUS.
There are two chlorination tonners both are connected to two pressure swithes and the pressure switch is connected to SOV which operates the valve to changeover the tonner selection i.e if pressure one tonner goes low the other tonner should come in line if it is inautomatic selection design a circuit using relays ?
what deference between panel earth and systemearth