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Let's do the 4 to 20 mAh conversion
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formulas for a pressure transmitter and
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its range is 0 to 10 bar pressure and
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first calculate span. The span is URV
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minus LRV. In our case 0 is LRV, 10 is
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URV. So 10 minus 0 it is 10 bar
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pressure. Next calculate percentage span
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from PV. So we have PV it is 7.5 bar.
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Apply this formula. So PV is 7.5 minus
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LRV is 0 and divided by 10 * 100 and 10
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is the span and the equivalent answer is
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75%. Next calculate milliampere from
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percentage span. So calculate milliamp
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and apply this formula. Our percentage
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span is 75. So 4 + 75 / 100 it is 75 *
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16 that is equal to 16 miampere. Next
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calculate percentage span from
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milliampere and apply this formula and
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our current is 12 m. Calculate
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equivalent percentage. So 12 - 4 / 16 *
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100 it is 50%. Next calculate PV from
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milliamp. Apply this formula. Our
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milliamp is 12 miamp. So lv is 0 + 12 -
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4 / 16 * span that is 10. That is equal
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to 5 bar pressure. Next calculate PV
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from percentage span. Apply this
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formula. Let's say our percentage of
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span is 50. That is equal to LRV is 0
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plus 50 by 100.5 multiply by span 10
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that is equal to 5 bar. Next calculate
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milliamp from PV. So in our case PV is
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7.5 bar. Calculate equivalent mill.
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Apply this formula. 4 + PV is 7.5 minus
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LRV minus LV is zero. So 7.5 base span
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that is 10. that multiply by 16 that is
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equal to 16 miampere. Now practice these
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formulas using this exercise. We have
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four examples. One is pressure
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transmitter, flow transmitter,
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temperature transmitter, level
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transmitter and their equivalent ranges
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are mentioned here. Now calculate these
1:57
parameters and apply and solve and share
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your answers through the comment
