How to find the LRV, URV, & Span

Field Instrumentation
1

LRV =?

URV=?

Span =?

60%=? mA

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2

. LRV = -8400mmH2o URV = 1050mmh2o

Span = 9450mmh2o

60% = 13.6mA

Span=10.5*.9=9.45m

Lrv=hp-lp(4.5*.9-15*.8)=-7.95

Urv=lrv+span(-7.95+9.45)=1.5

60%,ma=(span of 4-20)*60%+4=13.6