Answer / nick

12
-- = .75 x 4.6= 3.45
16

Answer / lalchhotex

as per as nick formula it is not fullfill anoter range like
as 0-100 for level, 0-14 for PH
formula is
16*(unknow value-Low end of rang)
mA O/P = 4+ ---------------------------------
transmitter span
Suppose range is 3-15 PSI according to question what is the
psi for 4.6 mA
by the formula
4.6-4 =16*(unknow value-3PSI)
----------------------
12 PSI
0.6*12PSI
--------- = (unknow value-3PSI)
16
7.2 psi
------- = (unknow value-3PSI)
16
0.45 psi = (unknow value-3PSI)

0.45psi+3psi = unknow value psi

3.45 PSI = unknow value psi answer

Answer / gunasekaran

4~20mA=3~15psi

4.6mA=?psi

psi =(mA -mA Zero)/(mA Span)×Range Span+Range Zero

4.6-4
psi = ------ x 12+3
16

0.6
psi = ---- x 12+3
16


psi = 0.0375 x 12+3
psi = 3.45

4.6mA = 3.45psi

Answer / abdulbasit137@hotmail.com

this is the one of the best formula for this situation
measuring value (1) - low ranmeasge value (1)/span
=
measuring value (2) - low range value (2)/span
u know span high value - low value 4 to 20 span is =16
3 to 15 span is = 12
simple
mv1 - lrv1 = mv2 - lrv2
span span
4.6-4/16= ?-3/12 = 4.3psi ans

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