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The DP-cell will indicate the relative difference between the pressure of the vessel (container) and the atmospheric pressure. This signal is often wired to an indicator that reads out locally, or remotely in a control room, and/or as a control (or feedback) signal to a valve, pump, or other control element to maintain a set pressure, or limit ...
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 flight deck manual, usually part of a Quick Reference Handbook: CLR Clear Seen on GFA and is used for sky coverage CMC central maintenance computer CMM component maintenance manual CMO Certificate Management Office: FAA CMV converted meteorological visibility: CMPA complex motor-powered aircraft CMU Communications Management Unit CNS
The DP training and certification scheme is operated by The Nautical Institute (NI). The NI issue logbooks to trainees, they accredit training centres and control the issuance of certification. With ever more DP ships and with increasing manpower demands, the position of DPO is gaining increasing prominence.
Systems that need external instructions and data to operate require the counterpart of telemetry: telecommand. [ 2 ] Although the term commonly refers to wireless data transfer mechanisms (e.g., using radio , ultrasonic, or infrared systems), it also encompasses data transferred over other media such as a telephone or computer network , optical ...
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 ...
The formal definition of calibration by the International Bureau of Weights and Measures (BIPM) is the following: "Operation that, under specified conditions, in a first step, establishes a relation between the quantity values with measurement uncertainties provided by measurement standards and corresponding indications with associated measurement uncertainties (of the calibrated instrument or ...
A host of functions required for ECU software calibration, such as interface-dependent calibration methods, calibration data management, measurement data visualization and analysis, ECU programming, vehicle bus monitoring, as well as remote control through standard interfaces, are part of the product's functional complement.