8303 Miniature differential pressure transmitter

Robust, integrated measurement amplifier, stainless steel, for liquid or gaseous media, high line pressure

  • Features

    • Measuring ranges from 0 ... ± 50 mbar and 0 ... ± 10 bar
    • Measurement accuracy < 0.5 %
    • High line pressure
    • For liquid or gaseous media
    • Integrated measurement amplifier
  • Product data

    Model 8303
    Measuring range

    0 … ± 50 mbar
    0 … ± 100 mbar
    0 … ± 200 mbar
    0 … ± 500 mbar
    0 … ± 1 bar
    0 … ± 2 bar
    0 … ± 5 bar
    0 … ± 10 bar

    Kind of measurement Differential pressure measurements in both directions
    Line pressure Max. 100 bar
    Signal output

    4…20 mA
    0…20 mA
    0…5 V

    Range of operating temperature -25 ... +85 °C
    Max. overload for one side Three times measuring range
    Burst pressure/ -protection 300 % over capacity
    Dead volume

    Both sides 0.35 cm3

    Specific characteristics

    • High line pressure
    • For liquid or gaseous media
    • Integrated measurement amplifier
  • Description

    The pressure transmitter illustrated here measures differences in pressure between the two connections of the measuring element. Pressure differences can be measured with respect to a reference pressure, such as atmosphere, or to the command variable of a regulation system. Equally, however, it is possible to measure pressure differences within systems that have a high static pressure. One practical example of this would be measuring a flow rate by determining the pressure drop occurring across a metering diaphragm. 

    The differential pressure transmitter measures in both directions and can therefore, for instance, be used on double-acting hydraulic cylinders. Its construction permits it to be used with liquid or gaseous media. Venting holes simplify installation. The robust design and the use of stainless steel make it possible to use the pressure transmitter under tough operating conditions. 

    It is fitted with integrated electronics to make the pressure transmitter even easier to use. This delivers the usual  current or voltage outputs familiar in measurement and control engineering.

    The differential pressure transmitter has a chamber on each pressure port. The chambers are separated by a diaphragm. Coils are located, and hermetically sealed, within the two halves of the sensor housing on both sides of the diaphragm. If there is a difference in the pressures on the two sides of the center element, the diaphragm is deflected from its rest position. As a result, the reluctance of the two coils, which are wired as differential inductances, changes. The integrated electronics converts the changed inductance ratio into the desired output signals, which are then available for further processing.

  • Data Sheet & Downloads

    Data sheet

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