Custom channel scaling? DAQAmi software

[rakeshaashay]

How to calculate in channes setting multiplier and offset

If i want to scale Custom range as follows :

Input 1 VDC = -0.1 bar

Input 5VDC = 10 bar

[Fausto]

Hello @rakeshaashay.

After solving for two equations and two unknown variables, the multiplier is 2.525 and the offset is -2.625.  In DAQami, select the Channels tab and then select Custom units.  DAQami allows a user to enter their custom units; in this case I entered bar.  Then enter the calculated multiplier and offset values. 

 

Regards,

Fausto

[rakeshaashay]

15 hours ago, Fausto said:

Hello @rakeshaashay.

After solving for two equations and two unknown variables, the multiplier is 2.525 and the offset is -2.625.  In DAQami, select the Channels tab and then select Custom units.  DAQami allows a user to enter their custom units; in this case I entered bar.  Then enter the calculated multiplier and offset values. 

 

Regards,

Fausto

Please let us know the formulla for calculating multiplier and offest

[Fausto]

Hello @rakeshaashay.

Using y = m*x + b

m = multiplier

b = offset

(Eqn. 1) -0.1 = m*(1) + b

(Eqn. 2) 10 = m*(5) + b

Solve Eqn. 1 for b. 

Insert b into Eqn. 2 and solve for m.

 

Regards,

Fausto

Edited May 15, 2024 by Fausto
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