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AutoCAD DXF (Drawing Interchange Format, or Drawing Exchange Format) is a computer-aided design (CAD) data file format developed by Autodesk [2] to enable CAD data exchange and interoperability between AutoCAD on different computing platforms.
A density meter (densimeter) is a device which measures the density of an object or material. Density is usually abbreviated as either ρ {\displaystyle \rho } or D {\displaystyle D} . Typically, density either has the units of k g / m 3 {\displaystyle kg/m^{3}} or l b / f t 3 {\displaystyle lb/ft^{3}} .
A man using AutoCAD 2.6 to digitize a drawing of a school building. AutoCAD was derived from a program that began in 1977, and then released in 1979 [5] called Interact CAD, [6] [7] [8] also referred to in early Autodesk documents as MicroCAD, which was written prior to Autodesk's (then Marinchip Software Partners) formation by Autodesk cofounder Michael Riddle.
Ensuring x-ray films are within code-required density ranges and comparing relative material thicknesses in industrial radiography; Process control of density dot gain, dot area & ink trapping. Densitometer readings will be different for different types of printing process & substrates.
This in-line section of pipe calculates the percentage of dry solids, wet density or wet and dry mass flow units. When coupled with compatible volumetric flow meters and processing units, this system gives a true value for density and mass flow. [2] The DM3 is a bi-directional unit which allows media to flow continuously through either ends.
Paper production uses gravitic density meters to measure the amount of pulp currently being used in the process. Oil and gas use gravitic density meters to measure the amount of oil and gas in the system. This case exemplifies the versatility of gravitic density meters because oil and gas are lighter than water.
Schematic view of a flow sensor. An ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and ...
DMax and DMin refer to the maximum and minimum density that can be produced by the material. The difference between the two is the density range. [1] The density range is related to the exposure range (dynamic range), which is the range of light intensity that is represented by the recording, via the Hurter–Driffield curve.