Answer Posted / www.islamqa.com

# P(absolute)=P(atmospheric)+P(gauge)
if P(gauge)> P(atmospheric)

# P(absolute)=P(atmospheric)-P(gauge)
if P(gauge)< P(atmospheric)

Regards,

Ahmed Sabry
Control and Instrumentation Engineer
GPC - General Petroleum Company
ahmedsabry.online@gmail.com
CELL.: 00 2 0121367310

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