Process I Nput T Ype C Onfiguration ( Init > I Npt > P Roc) - Omega PLATINUM Series User Manual

PLATINUM S eries M eters U ser's G uide
6.1.4 Process I nput T ype C onfiguration ( INIt > I NPt > P RoC)
Select P rocess ( PRoC) a s t he i nput t ype. T hen s elect t he p rocess i nput r ange a nd s cale i t. I f
you s top a fter s electing t he P RoC i nput t ype, t he l ast s elected i nput r ange a nd s caling i s u sed.
Navigate t o t he v oltage o r c urrent r ange o f t he p rocess i nput. A ny s ignal i nput o utside o f t he
specified h ardware i nput r ange w ill r esult i n a n " out-­‐of-­‐range" e rror ( code E 009). I nput r ange
choices i nclude t he f ollowing:
4 20 – 4 m A t o 2 0 m A ( factory d efault)
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0 24 – 0 m A t o 2 4 m A
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+ 10 – -­‐10 V t o + 10 V
–
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+ 1 – -­‐1 V t o + 1 V
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+ 0.1 – -­‐100 m V t o + 100 m V
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+ .05 – -­‐50 m V t o + 50 m V
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Select t he d esired r ange.
The ( tYPE) o ption i s o nly d isplayed f or + /-­‐ 1 .0, + -­‐0.1 a nd + -­‐ . 05 i nputs a nd a llows s electing
between S ingle E nded, D ifferential a nd R atiometric i nputs.
SING – Bipolar S ingle E nded v oltage b etween A + a nd A RTN c onnections
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DIFF – Differential v oltage b etween A + a nd A -­‐ c onnections
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RTIo – R atiometric r eading b etween A + a nd A -­‐ c onnections.
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Select t he d esired t ype.
Choose e ither m anual o r l ive s caling. T he s caling f unctions t ranslate p rocess v alues t o
engineering u nits a nd a re a vailable f or a ll p rocess i nput r anges. T he d efaults f or e ach i nput
range a re t he h ardware m inimum a nd m aximum. S caling m ethods i nclude t he f ollowing:
MANL – User m anually e nters a ll f our s caling p arameters
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LIVE – User m anually e nters t he l ow a nd h igh d isplay v alues ( RD.1 a nd R D.2) b ut
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reads t he i nput s ignal d irectly t o s et t he l ow a nd h igh i nput v alues ( IN.1 a nd I N.2)
Scaled v alues a re c alculated a s:
Scaled V alue = I nput * G ain + O ffset, w here:
Gain = ( Rd.2 – R d.1) / ( IN.2 – I N.1)
Offset = R d.1 – ( Gain * I N.1)
Therefore s caling c an b e d one o ver a s ubset o f t he a pplicable r ange a s t his s caling c alculation
linearly e xtrapolates i n b oth d irections.
Select t he s caling m ethod t o b e u sed.
Navigate t o t he d esired s caling p arameter. O ptions i nclude t he f ollowing:
Rd.1 – Reading l ow v alue c orresponding t o I N.1 s ignal
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IN.1 – Input s ignal c orresponding t o R D.1
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Rd.2 – Reading h igh v alue c orresponding t o I N.2 s ignal
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IN.2 – Input s ignal c orresponding t o R D.2
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In M anual M ode, I N.1 a nd I N.2 a re e ntered m anually f or s caling;, i n L ive M ode, I N.1 a nd I N.2
activate a r ead o f t he i nput s ignal f or s caling.
Select t he s caling p arameter t o c hange.
Reference S ection: I nitialization M ode ( INIt) 24