De Dietrich 300000831 electronic manometer HUBA 505 G3/8"

This electronic manometer, item 300000831 (also listed as 336.466.001) from De Dietrich, is designated as a HUBA 505 G3/8". It belongs to the group of measuring instruments used alongside thermometers and service accessories to support commissioning and maintenance of boiler and burner systems, rather than directly controlling the firing sequence. A manometer of this type measures gas, water, or air pressure within the system. In a typical heating installation, such instruments monitor the supply pressure to the gas valve, the air pressure differential across the fan, or the water pressure in the heating circuit. Electronic manometers provide a digital reading or an electrical output signal, allowing integration with control systems or simple visual indication. The connection thread G3/8" is a standard size for many pressure gauges used on burner trains or boiler hydraulics. When selecting a replacement manometer, the primary considerations are the measuring range and the accuracy class. The working pressure should sit in the middle of the scale for the most precise reading. For this specific article, the model number and codes identify it as a De Dietrich part. Ensure the connection thread matches the installation point and that the pressure range covers the expected operating conditions without exceeding the maximum allowable pressure. Compatibility with the existing system's pressure medium (gas, water, or air) must also be verified.