Dial-indicating transmitters for round cutouts provide both visual monitoring and electronic control of low differential pressure. Also known as indicating transmitters, they monitor the pressure in ducts and rooms in addition to total building pressure. With a two-wire design and terminal strip on the rear, these instruments are easy to connect. They are easy to upgrade to an indicating transmitter in the field. Their large dial allows for local visual monitoring, while also transmitting measurements for electronic control. These units are commonly used to monitor pressure in ducts, rooms, or buildings; they’re also used for filter monitoring and to provide local indication of cleanroom pressure.

These differential pressure transmitters have a digital display with push-button zero and span for simple calibration. Also known as indicating transmitters, these instruments monitor static pressures in ducts and buildings with process and engineering units. They’re designed for easy panel- and flush-mounting in round cutouts and are often used for filter monitoring applications.