Yes, pressure modules can measure gauge, differential, and absolute pressure. 
1. **Gauge Pressure**: Gauge pressure is the pressure relative to atmospheric pressure. Pressure modules designed for gauge pressure measurement have a vented chamber that allows them to account for atmospheric pressure changes. This type of module is commonly used in applications where the pressure of a system needs to be measured relative to the surrounding environment, such as in tire pressure gauges or blood pressure monitors.
2. **Differential Pressure**: Differential pressure is the difference in pressure between two points. Pressure modules for differential pressure have two ports, allowing them to measure the pressure difference across a component or system, such as filters, pumps, or flow meters. These modules are essential in applications where pressure drop or flow rate needs to be monitored, ensuring system efficiency and safety.
3. **Absolute Pressure**: Absolute pressure is the total pressure measured relative to a perfect vacuum. Pressure modules for absolute pressure measurement are sealed and do not vent to the atmosphere, providing a true pressure reading independent of atmospheric changes. These modules are used in applications like barometric pressure measurement, vacuum systems, and altimeters, where precise pressure readings are crucial.
In summary, pressure modules are versatile instruments capable of measuring different types of pressure depending on their design and application. They are essential tools in various industries, including automotive, aerospace, healthcare, and manufacturing, providing critical data for system monitoring and control.