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Let's discuss about the present the most
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popular signals and these are 4 to 20
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milliamp basic signals which we are
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using to handle analog signals. We are
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using 4 to 20 milliamp signals between
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field instruments and DCS system. If you
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see here, this is a temperature
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transmitter. This is a pressure
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transmitter and this is a DP
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These instruments measures the
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respective process parameter
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like temperature pressure
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And then generates an equivalent 4 to 20
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milliamp basic signal.
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These instruments sends 4 to 20 milliamp
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basic signals to the DCS system.
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The DCS system receives these signals
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and calculates the equivalent process
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variable. So these are the measurement
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signals which we are using in our
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This is the very popular and industry
