Wet Leg & Dry Leg DP Measurement Quiz: Top 25 Advanced MCQs

Long impulse lines create pressure transmission delays together with temperature-related density effects that diminish measurement quality.

The density of wet leg fluid determines pressure references which might result in measurement inaccuracies.

The accuracy of DP measurements is negatively affected by trapped air or leaks found in the pressure measurement system.

DP sensors may drift due to hot environmental conditions which need active temperature mitigation or system cooling systems.

The combination of short length and gentle incline in lines supports accurate pressure measurement by discouraging liquid buildup.

Routine purging procedures prevent blockages within impulse lines that allow correct determination of differential pressure readings.

Reliability increases through seal installation which prevents process fluid from entering impulse lines.

The identification and correction of leaks and blockages in DP transmitters ensure accurate signals.

The measurement system based on specific gravity will display inaccurate results when technicians set the incorrect settings.

The absence of fluid in the wet leg decreases reference pressure which leads to incorrect readings at a low level.

The manifold provides a mechanism for calibration and maintenance work which does not affect process pressure.

The process of maintaining clean impulse lines together with proper zero/span adjustment helps to enhance measurement accuracy.

A density fluctuation alters reference pressure measurements which affects the measurement accuracy of fluid levels.

The density within the impulse line changes because of temperature variations which leads to wrong measurement readings.

The slight slope helps drainage occur while periodic purging procedures eliminate blockages.

A blocked impulse line causes the transmitter to display an inaccurate but unchanging measurement.

The LP side receives pressure from the tank vapor space to recognize pressure changes inside the vessel

Reference pressure maintenance through bubbler systems keeps the system free of problems that occur due to evaporation from the wet leg.

Temperature fluctuations will modify the gas density present in dry leg structures which consequently impacts DP measurements.

DP = ρgh = (0.8 × 1000 kg/m³) × 9.81 m/s² × 4 m = 31.4 kPa.

The reduction of wet leg fluid level leads to a decrease in reference pressure that results in a higher than expected DP measurement.

The density of wet leg liquid requires consideration when performing DP calculations because it affects reference pressure measurements.

A dry leg system allows the DP transmitter to measure the difference between high-pressure side and low-pressure side levels to establish measurement accuracy.

The main purpose of using a wet leg configuration is to stop gases from building up in the lower-pressure side.

Dry leg configurations expose the LP transmitter side to gas or vapor since they do not form condensation.

A DP transmitter determines liquid level by analyzing the pressure differences between the high-pressure (HP) side and the low-pressure (LP) side while compensating for the height of the liquid.