In ducts and vessels
We can distinguish two types of devices:
Digital manometers. They have the classical format with a thread connection in in the bottom and the display of pressure in different units. Power is supplied by long-life batteries. Hand devices with internal sensors or interchangeable thread or flexible tube connection. In some cases matches with the differential pressure measuring equipment (as in low pressure equipment) or atmospheric pressure (absolute pressure equipment).
In both cases the equipment should be selected depending on the measure taking into account the desired accuracy, compatibility with the environment, connection, temperature, etc.
Differential pressure.
We can measure the pressure difference in air ducts, measure the clogging of filters, pressure losses, closing valves, etc. The connection is ready for plastic pipes with 6 mm of diameter.