Transmitter Test port circuit
How the transmitter test port works?A majority of people knows for what purpose it is provided. But a greater per cent of them don't know…
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24 December 2022
2 o o 3 logic – ladder diagram
Two out of three logic a popular control scheme used in critical facilities .They are voting schemes which ensure a process condition status .These control…
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22 December 2022
sourcing and sinking
Sinking and sourcing concepts Sinking and sourcing .A simple but a confusing concept among industrial automation experts . especially in industrial automation systems . In …
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22 December 2022
NPN type and PNP type sensors
NPN and PNP type of sensors,two sensor types used especially in industrial automation environment .These specification related to three wire sensors like proximity sensors. Selection of…
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14 December 2022
DP transmitter calibration
Differential pressure transmitter calibration DP transmitter calibration DP transmitter or differential pressure transmitter ,a popular instrument used widely in process control applications . Basically it…
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11 November 2022
pressure switch
An electric switch operated by means of pressure is called pressure switch. It makes or breaks the electric contacts at the desired setpoint. They can be used for initiating an alarm or....
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7 November 2022
Inductive proximity sensor
Proximity sensor ,as the name implies ,it senses the proximity of an object .Or presence of an object . Proximity sensors doesn't require physical contact…
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7 November 2022
4 wire ,3 wire ,2 wire modes of signal transmission
4 wire 3 wire 2 wire signal modes Process parameters are signalled to control panels or monitoring devices in various ways . Electric form of…
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2 November 2022
Transmitter
Transmitter in process Industries A transmitter is a general term . something transmitting a signal to a distance .we can call them like. To be…
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2 November 2022
SPST ,SPDT, DPDT…… Switches/Relay classification
SPST SPDT DPST DPDT SWITCHING What is SPDTswitch! What is SPDT relay? DPDT,3PDT,3PST........ What are they? Heard about this ?.. SPDT .....single pole double throw…
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30 October 2022
Hydrostatic pressure
we have a tank as shown in figure filled with a liquid of known density. It is filled up to a height h from bottom.if…
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26 October 2022
How to use Pressure switch as level switch
pressure switch a familiar device used in process control applications .we know they sense pressure and changes the status of contact output about a setpoint…
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10 October 2022