Ring balance manometer
the ring balance manometer is a measuring instrument for the measurement of pressure, negative pressure and differential pressure of gaseous media. Scarcely a hollow ring swivelling stored to the half more filled with oil, is divided by a partition into two chambers, which are subjected over highly flexible hoses with course, pressure or differential pressure. The effect of the difference of pressure on the partition turns the torus so far, until a force equilibrium with the counterweight adjusts itself. Depending upon allocation of the process connections the ring balance manometer works as course, pressure or differential pressure gauge.
advantages of the measuring procedure
the large advantage of the ring balance manometer lies in the long-term accuracy of the measurement. The calibration is determined exclusively by firm, also over years constant factors, because instead of a measuring feather/spring (diaphragm) a calibration weight determines the measurement. The measurement principle permits beyond that very small measuring range: Typical areas of application for the ring balance manometer are buildings automation, clean-room technology and furnace and/or boiler construction. Here very small measuring range between -25 to 50 Pa are needed.