Far eastone double flange differential pressure transmitter

Products overview:

ZW3851LDP seriesFar eastone double flange differential pressure transmitterIs a new type of transducer, it has advanced design principle, complete specifications, installation convenient use, etc.Appearance, the total integration of the current domestic most popular and widely used two kinds of transducer (3851 with yokogawa EJA rosemount) the structure of the advantages, for the users to have the feeling that find everything new and fresh, at the same time with the traditional 1151, CECC series equipment on the installation can be directly replace, strong commonality and replace ability.

For the continuous improvement of the domestic automation level and development of double flange in addition to the compact design, high precision differential pressure transmitter with HART field bus protocol of intelligent function.It is through the flange directly installed on the container.Differential pressure method is used to measure the open or closed container level.Suitable for high viscosity, containing suspended solid state and easy crystallization medium level measurement.With flat flange and plug-in flange two structures, installation of flange, in accordance with ANSI standard, pipe sizes 3 "ａnd 4", flange rating of 150 lb (2.5 MPa).By liquid membrane material 316 l, hartz eat commonly 76, monel and tantalum are available.

Second, the working principle:

ZW3851LDP series double flange far eastone the principle of differential pressure transmitter is when two of the measured medium pressure ventilation with high and low pressure chamber, role in the delta components (i.e., sensitive element) on either side of the segregation on the diaphragm, through spacer and components on both sides of the filling liquid to measure the diaphragm.Liquid level transmitter is by measuring diaphragm and on both sides of the insulation on the electrodes of a capacitor.When we have different pressure on both sides, to cause measuring diaphragm displacement, the displacement and stress is directly proportional to the difference, so both sides capacitance range, through the link of oscillation and demodulation, is converted into is proportional to the pressure signal.

JiYiDuan allowed pressure liquid, the other end songs in phase, according to the principle of hydrostatics, are:

PB = PA + H rho g (2-1)

Type: H - liquid height;

Rho - density measured medium;

G - measured the local acceleration of gravity.

By type (2-1) available:

Δ P = PB - PA = H rho g

In general, the density of the measured medium and the acceleration of gravity is known, as a result, the differential pressure gauge measured the differential is proportional to the liquid height H, thus the measurement of the altitude of the liquid into the measurement of differential pressure problems.