# Pressure Measurement: Big vs Small Diameters

• can12345
In summary, the effect of a transmission line on pressure measurement varies depending on the diameter of the measurement line. For electrical sensors, such as transducers, long and thin tubing can dampen unsteady pressure fluctuations, but this may not be an issue for time averaged values. The size of the line can also affect the time it takes for pressure to stabilize after a change.
can12345
What is the effect of transmission line while measuring pressure value? I want to learn difference between big and small diameter of measurement line (transmission line).

What kind of measurement are you talking about? Electrical sensors? Mechanical Sensors? Liquid or gaseous?

Electrical sensor. Let's say transducer.

Well I have seen the standard 4mA-20mA sensors give exactly the same readings at 1m and 200m because of the corrected resistance value for such a long wire.

One of the most important effects is how the line influences the transmission of pressure fluctuations. Long thin tubing usually cannot be used to measure unsteady fluctuations because the fluctuaions get damped out by the tubing. But if you are only interested in time averaged value this isn't not a problem but the size may still effect the time it takes for the pressure to stabilize after a change in the pressure.

Rippetherocker

## What is pressure measurement and why is it important?

Pressure measurement is the process of determining the amount of force exerted per unit area. It is important because it allows us to monitor and control pressure in various systems, such as industrial processes, medical equipment, and weather forecasting.

## What is the difference between measuring pressure with big and small diameters?

The main difference is the sensitivity of the measurement. Using a smaller diameter for pressure measurement allows for more precise and accurate readings, while a larger diameter may provide a more general measurement.

## What are some common applications for pressure measurement with big and small diameters?

Small diameter pressure measurement is commonly used in high-precision systems such as microfluidics, biomedical devices, and aerospace technology. Large diameter pressure measurement is often used in industrial processes, hydraulic systems, and weather monitoring.

## How does the size of the diameter affect the accuracy of pressure measurement?

A smaller diameter allows for a greater change in pressure to be detected, resulting in a more accurate measurement. A larger diameter may provide a more general measurement and may not be as sensitive to small changes in pressure.

## What factors should be considered when choosing between big and small diameter pressure measurement?

The main factors to consider are the level of precision needed, the range of pressure being measured, and the type of system being monitored. In general, smaller diameters are better for high-precision applications, while larger diameters may be more suitable for general pressure measurement.

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