what is the formula for calculating milliampere at different pressure points fo

what is the formula for calculating milliampere at different
pressure points for eg 4-20 ma = 3-15 psi but if i have to
check the ma at 4.6 ma?

Question Posted / guest

4 Answers
27238 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what is the formula for calculating milliampere at different pressure points for eg 4-20 ma = 3-15 ..

Answer / nick

12
-- = .75 x 4.6= 3.45
16

Is This Answer Correct ?

30 Yes

7 No

what is the formula for calculating milliampere at different pressure points for eg 4-20 ma = 3-15 ..

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

Is This Answer Correct ?

23 Yes

2 No

what is the formula for calculating milliampere at different pressure points for eg 4-20 ma = 3-15 ..

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

Is This Answer Correct ?

19 Yes

4 No

what is the formula for calculating milliampere at different pressure points for eg 4-20 ma = 3-15 ..

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

Is This Answer Correct ?

1 Yes

13 No

Post New Answer

More Instrumentation Interview Questions

how can use ram

0 Answers

How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

0 Answers Siemens,

What is the SCAN time of a DCS/PLC? What is the typical value for scan time of DCS and PLC?

6 Answers Essar, Gasco, Siemens,

How to get Cv of control valve having following parameter ,i.e inlet pressure 4.5kg/cm2 outlet pressure 1 kg/cm2 specific gravity 0.808

3 Answers

What is Electrical Runout & Mechanical Runout in Vibration measurement.

1 Answers

which types of oxygen analyzer describe with drawing ?

2 Answers

what is transducer?

13 Answers Sofcon,

How is SmartPlant Instrumentation related to INtools?

4 Answers TCS,

What is the difference between compensation and extension cable.

11 Answers HPCL,

can any one tell me when ongc placement test and its forms is available????/ pls tell me if u know

0 Answers

How do you measure g's?

5 Answers Aramco, GNFC, HPCL, Polmon, Thermax,

why we are using digital signals for I/O & how to measure this signals is getting or not ?

0 Answers

For more Instrumentation Interview Questions Click Here