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In the case of a DP flowmeter, size the primary element for a higher or lower differential pressure (higher DP's provide higher accuracy, at the expense of higher pressure loss). Select a flowmeter and pressure transmitter with faster or slower response. Use long or short interconnection (impulse) lines, or direct connect for fastest response.
A DP cell is a device that measures the differential pressure between two inputs. [1]Example: To measure the pressure difference between a container (or vessel) and the surrounding atmosphere, you may connect 'Hi' port of the DP-cell to a fitting that enters the vessel, using suitable tubing.
design organization manual DOW dry operational weight DP Departure Procedures DPU Display Processor Unit DR dead reckoning: DRMC Direct Reading Magnetic Compass DSP Digital signal processing: DTO declared training organisation: DTU Data transfer unit DUATS Direct User Access Terminal Service: DVE Degraded Visual Environment
The technique is inherently self-cleaning. It is highly recommended for liquid level measurement applications where ultrasonic, float or microwave techniques have proved undependable. The system will require constant supply of air during measurement. The end of the tube should be above certain height to avoid sludge from clogging the tube.
A pressure sensor may be used to sense the decay of pressure due to a system leak. This is commonly done by either comparison to a known leak using differential pressure, or by means of utilizing the pressure sensor to measure pressure change over time. Groundwater measurement; Above-ground casing of a piezometer Symbol used in drawings
A Precision Measurement Equipment Laboratory (PMEL) is a United States Air Force (USAF) facility in which the calibration and repair of test equipment takes place. This practice is also known as metrology: the science of measurement. Metrology is defined as the science of weights & measures, while a PMEL is the place where technicians perform ...
Robot calibration is a process used to improve the accuracy of robots, particularly industrial robots which are highly repeatable but not accurate. Robot calibration is the process of identifying certain parameters in the kinematic structure of an industrial robot, such as the relative position of robot links.
IEC 62150 Fibre optic active components and devices – Test and measurement procedures; IEC 62151 Safety of equipment electrically connected to a telecommunication network; IEC TR 62152 Transmission properties of cascaded two-ports or quadripols – Background of terms and definitions; IEC 62153 Metallic communication cables test methods