Differential pressure definition

Differential pressure means pressure drop across a membrane module or unit from the feed inlet to concentrate outlet, as distinguished from transmembrane pressure, which represents the pressure drop across the membrane barrier.
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Examples of Differential pressure in a sentence

  • Differential pressure will be measured using microprocessor based 'smart' type transmitters, with 4-20 mA analogue output signals temperature compensated to minimise the effect of inaccuracies due to ambient temperature changes.

  • Headers shall be re-graded to acceptable gradient; • LFG temperature; • Wellhead static pressure; • Header static pressure; • Methane gas concentration; • Oxygen gas concentration; • Carbon dioxide gas concentration; • LFG flow rate for each well and valve position; • Differential pressure; • Sumps operation and maintenance; liquid levels; leaks; filters, etc.; and • Sample ports located at strategic points in the gas conveyance header system shall be tested for the same parameters listed above.

  • Differential pressure measurement across filters linked through the DCS to allow assessment of the optimum period to change the filter pads.

  • Valve Actuator 2 DP Sensor 2  Differential pressure control of HW system.

  • Differential pressure type instruments shall normally be used for flow measurements where suitable for the application.

  • Differential pressure instruments shall normally be of the manometer type, either liquid-filled, bellows, or force-balance type according to requirements.

  • Differential pressure sensors set at the stated dirty filter pressure drop shall be provided on each filter and shall raise an alarm on the associated control panel when that value is exceeded.

  • Differential pressure indicators are provided on one membrane per stage.

  • Differential pressure shall be displayed on the HMI by use of pressure transducers with accompanying transmitters capable of sending a 4 - 20 mA signal.

  • Differential pressure across the orifices in the air release valves shall not be allowed to exceed five psi at any time during filling.