Answer / manohar chotrani

Negative range of a transmitter is nothing but the range
required to measure the vacuum of any equipment.If the
pressure inside a tank or equipment drops below zero and
goes to negative side then it is measured by the
transmitter.Maximum of 14.7 psi vacuum can be measured at
ideal conditions.For example a transmitter range is
calibrated as -600 to +600 mm of water means the
transmitter will measure negative pressure inside a pipe or
column or tank and give output as 4 mA and at pressure of
600mm(positive )it give 20 mA output

what is the Analog signal and what is the Digital signal

4 Answers  

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what is the different between deflection type measurement and null type measurement in RTD?

0 Answers   SHR Solutions,

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Can anyone convert a 5/2 way or 3/2 way valve into an ISO valve?

0 Answers  

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what will be the output of the temparature transmitter if temp is 120 degre celcius.

1 Answers   Base Automation, NTPC, PDO,

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Describe the functions of the Operator Interface including the considerations related to alarming and display layout/configuration/layers.

0 Answers  

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What kind of feedback is used in DP cells.

1 Answers   CCIE,

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My flow transmitter range is 0-1000mmwc.DCS range is 0- 100m3/hr.What is correspond out put in terms of milliamps if my flow is 65m3/hr

4 Answers  

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A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

0 Answers  

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tell about various protocols used in different plcs

3 Answers   Emerson, Samtel,

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how to calculate the temp. of RTD&Thermocouple when we got some mV r Ohms?if anybody has d chart pls mail the chatrs to me...

1 Answers  

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how does pressure is converted into milli amps in pressure transmitter? plzzz explain practically

1 Answers   rsystems,

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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?

0 Answers  

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