What is a Pressure Transmitter?
Pressure measurements may be expressed relative to various zero references.. Absolute pressure of a fluid is referenced against a perfect vacuum. Gauge pressure is referenced against ambient air pressure, so it is equal to absolute pressure minus atmospheric pressure. Atmospheric pressure is typically about 100 kPa, but is variable with altitude and weather. If the absolute pressure of a fluid stays constant, the gauge pressure of the same fluid will vary as atmospheric pressure changes. For gauge pressures several times larger than atmospheric pressure, this variation is small as a percentage of reading and may be ignored. Differential pressure is the difference in pressure between two points. Examples of absolute pressure measurements include barometric pressure, altimeters, and the Manifold Absolute Pressure (MAP) sensor used in the engine control systems of modern fuel-injected automobiles. Examples of gauge pressure measurements include the tire-pressure gauge and sphygmomanometer
As a means of monitoring activity in a number of manufacturing facilities, marine research, and general production control, a pressure transmitter will not only help to ensure positive results; it also can be a great way of maintaining acceptable levels of safety. Here are some examples of what a pressure transmitter is designed to do and how it can be used in several different settings. When it comes to the monitoring of pressure within a factory setting, a pressure transmitter helps to accomplish two specific goals. First, pressure instruments monitor the amount of pressure applied to a part of the process that is required in order to achieve the desired result. Since the application of too much or too little pressure may result in product that cannot be sold, constant real-time measurements of the pressurized environment is absolutely necessary. In other manufacturing applications, a pressure transmitter may be used to make sure that no machinery is building up pressure that is beyo
