Views: 50 Author: Site Editor Publish Time: 2021-11-30 Origin: Site
Most applications do not need sensors that cover a very wide range of pressure, the reason is that very wide range has large disadvantage on measuring very low pressure.
It’s difficult to obtain an ideal accuracy if choosing range is not matched actual situation.
For example, we don’t suggest use a 1000bar range of pressure sensor on measuring 1bar pressure, it would be better if you could use 10bar range instead of 1000bar.
Therefore, choosing the right measurement range is very important and efficient for you.
Three major factors must to be taken into account:
1. Normal operating pressure of a system: Consider the highest pressure and lowest pressure at which the pressure has to be measured in that particular system. The lowest pressure measured could be 0 psi, or it could be negative also. The optimal pressure range of the system is the first factor to be considered. The maximum pressure to be measured by the sensor must not exceed the maximum range of the sensor. If this happens, it could lead to product damage and potential failure of the system.
2. Pressure changes during operation: After the optimal measuring range is decided, any potential changes in the pressure due to system dynamics are to be considered. System dynamics could mean starting or stopping of pumps and motors, or opening and closing of valves. Changes in operating temperatures could also affect the pressure range of any system.
3. Drastic changes in pressure: Many industrial systems might experience a sudden spike in pressure called “over pressure”, or a sudden fall in pressure. A sudden increase of pressure causes damage to the sensor; if the sensor is meant only for a specified range.