Cleaning the ultrasonic sensor

In this application, an ultrasonic sensor is used to detect printed circuit boards. What should you take into account when installing and assembling ultrasonic sensors?

Ultrasonic sensors can be installed and operated in any position, and they are largely immune to environmental conditions. However, there are a few things to keep in mind when setting up the ultrasonic sensors, in order to achieve ideal measurement results. For instance, whencleaning the ultrasonic sensor, ensure that the sensor surface (decoupling layer) and the integrated foam around the transducer are not damaged. Water droplets or crusting on the decoupling layer may impair the function of the ultrasonic sensor. Note: light dust deposits are not critical.

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A photoelectric sensor, or photo eye, is a device used to detect the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric receiver. They are used extensively in industrial manufacturing. There are three different functional types: opposed (through beam), retro-reflective, and proximity-sensing (diffused).

Photoelectric sensors use a beam of light to detect the presence or absence of an object. This technology is an ideal alternative to inductive proximity sensors when you require long sensing distances or when the item you want to sense is non-meta (more…)

A soft starter is another form of reduced voltage starter for A.C. induction motors. The soft starter is similar to a primary resistance or primary reactance starter in that it is in series with the supply to the motor. (Three wire or standard connection) The current into the starter equals the current out. The soft starter employs solid state devices to control the current flow and therefore the voltage applied to the motor. In theory, soft starters can be connected in series with the line voltage applied to the motor, or can be connected inside the delta loop of a delta connected motor, controlling the voltage applied to each winding. (more…)

An electric motor converts electrical energy into a mechanical energy which is then supplied to different types of loads. A.c. motors operate on an a.c. supply, and they are classified into synchronous, single phase and 3 phase induction, and special purpose motors. Out of all types, 3 phase induction motors are most widely used for industrial applications mainly because they do not require a starting device.

A 3 phase induction motor derives its name from the fact that the rotor current is induced by the magnetic field, instead of electrical connections. The operating principle of a 3 phase induction motor is based on the production of r.m.f. (more…)