When a metal wire is heated the resistance increases. So, a temperature can be measured using the resistance of a wire. The RTD incorporates pure metals or certain alloys that increase in resistance as temperature increases and, conversely, decrease in resistance as temp decreases. RTDs act somewhat like an electrical transducer, converting changes in temperature
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A tire pressure sensor is a small programmable electronic device, located in the pressurized pocket made by a wheel and tire, that constantly measures the air pressure inside the tire. The tire pressure sensor transmits that information via low-frequency radio to the vehicle’s onboard computer and, if the car has one, to a corresponding display
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Types of jig and fixture There are so many types of jig and fixture. It is difficult to classify them into a standard system. However, depending upon their construction and method of operation, jigs can be broadly classified as follows: Boring jig Drill jig Template jig Plate jig Sandwich jig Latch or leaf jig Channel
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Progressive Die These progressive die are designed to perform two or more operations at different stages every time when the ram descends. The stock strip is advanced through a series of stations that perform one or more distinct die operations on the workpiece. The strip must move from the first through each succeeding station to
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A cam and follower is a rotating or oscillating machine clement having a curved outline Or a curved groove. It gives a predetermined specified motion to another element called the follower which is in contact. A general example is the camshaft of an automobile which takes the rotary motion of the engine and translates it
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Primary function of the pressure control valves is to match the flow of fluid through the regulator to the demand for fluid placed upon the system. If the load flow decreases, then the regulator flow must decrease also. If the load flow increases, then the regulator flow must increase in order to keep the controlled
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A load cell is an electromechanical transducer that converts load acting on it into an analog electrical signal. Strain Gauge Load cell provide accurate measurement of compressive and tensile loads. Load cells commonly function by utilizing an internal strain gauge that measure deflection. Because the modulus of elasticity of a load cell is constant the
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Laser Beam Welding Characteristics The laser beam welding characteristics of the laser and electron beam are similar. The concentration of energy by both beams is similar with the laser having a power density in the order of 10°W/cm². The power density of the electron beam is only slightly greater. It is compared to a current
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Friction Stir Welding (FSW) Friction Stir Welding (FSW) is a solid state welding process in which a rotating tool is fed along the joint line between two workpieces. It is used to join two facing surfaces. During welding, heat is generated due to friction and the metal is mechanically stirring to from the weld seam.
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Hall effect sensor work is a type of magnetic sensor. A Hall effect sensor is a transducer that varies its output voltage in response to changes in magnetic field. In 1879 Edwin Hall discovered that: ‘when a conductor or semiconductor with current flowing in one direction was introduced perpendicular to a magnetic field a voltage
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