Instrumentation jobs oil field questions and answer UAE

What is the process Variable?

The process Variable is:

·        Flow.

·        Pressure.

·        Temperature.

·        Level.

·        Quality i.e. % O₂, CO₂, pH etc.

 Define all the process Variable and state their unit of measurement. 

Flow: Defined as volume per unit of time at specified temperature and pressure                                                                                              

 Conditions, is generally measured by positive-displacement or rate meters.

Units: kg / hr, litter / min, gallon / min, m³ / hr, Nm³ / hr. (gases)

Pressure: Force acting per unit Area. P = F/A

Units : bar, Pascal, kg / cm², lb / in².

Level: Different between two heights.

Units: Meters, mm, cm, inches , percentage.

Temperature: It is the degree of hotness or coldness of a body.

Units   : Degree Centigrade, Degree Fahrenheit, Degree Kelvin, Degree Rankin.

Quality: It deals with analysis. (PH, % CO₂, % 0₂, Conductivity, Viscosity)