Inductive sensors

The measurement and evaluation methods of chapter 3.1. and 3.2. work with inductive sensors in an absolute circuit. The results on two different formed coils, a pot core coil and a cylinder core coil are selected. For presentation in this paper the third method, described in chapter 3.3., uses a Hall-effect device to detect the information and a coil system in a differential circuit to excite the electromagnetic field. 

The difference in widths of the impulse responses are small. Especially visible the pulse response of the inductive sensors, curves (1) and... 

Both devices are externally triggered by an inductive sensor so that all measurements are carried out at the same disk position. 

When microelectronics and solid state devices developed over the last five to four decades, the development of solid-state sensors followed suit, resulting in the introduction of NTC and PTC resistors to monitor temperature, and first Reed relais and inductive sensors to determine position and distance, or tachometers for rotational measurements in washing machines and dish washers over the past two decades. 

Conductivity Seabird/SBE-3-Ol Induction sensor 0.01 170 ms when towed at 4 knots Resolution 5 x 10 mmoh/ cm at 12 samples/s... 

Inductive sensor Du Nouy ring Sample vessel... 

Inductive sensors are devices that transduce the change in the measured physical parameter, that is in the form of a mechanical displacement, into variations of a coil s inductance. The inductance, L, of a coil can be expressed as ... 

An advantage of an inductive sensor is that it is not affected by the dielectric properties of its environment. A disadvantage is that it can be affected by external magnetic fields due to magnetic materials in its proximity. 

Figure 2.10(b) illustrates a mutual-inductance sensor which employs two separate coils and uses the variation in their mutual magnetic coupling to measure displacement. These devices can be used to measure cardiac dimensions, monitor infant respiration and ascertain arterial diameters [2]. 

Fig. 1 Tower bioreactor. 1, Inlet and outlet of the pellets 2, gas-liquid separator inductive sensor 4, CO2 outlet 5, evacuation of sample d, fermented liquid with CO2 flow 7, fermented liquid without CO2 flow...

For instance, if the formation resistivity and its thickness are 100 ohm-m and 6 m, respectively, then the maximal time when the influence of the surrounding medium is still negligible can not exceed 2 sec (pi/p2 < 16). Taking into account that at such times currents induced in a moderately conductive medium create relatively weak signals we can expect serious technical problems of measuring in inductive sensors due to intrinsic processes. For this reason it is appropriate to consider some features in a behavior of the nonstationary field of the electric dipole. 

The deformation of the adhesive layer has been measured on the TR08 vehicles using inductive sensors during test runs on the test track in the city of Lathen. The deformations were monitored and recorded during the trials at speeds of up to 420 km h under a variety of weather and track conditions. Useful experi-... 

Teichmann, D., Kuhn, A., Leonhardt, S., Walter, M., 2014. The main shirt a textile-integrated magnetic induction sensor array. Sensors 14, 1039—1056. http //dx.doi.org/10.3390/ S140101039. 

Magnetic and Radio Frequency Induction Sensors Brandon D. Pereles and... 

Mechanical, optical, and electrical systems are mainly used to detect burrs. The stylus method, a mechanical system, can measure burr height, but optical methods can also be applied for this purpose. Among the most important optical systems are microscopes, autofocus methods, laser triangulation, and camera systems. For automatic burr detection in a production process, an electrical measuring method, for example, an inductive sensor system, can be applied. 

Inductive sensors often apply a simple principle of discrete on-off to determine a part s... 

Sensor (Assembly), Fig. 9 Inductive sensor component and principle... 

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