pizzato switch Germany pizzato model pizzato price

pizzato switch is a switch that uses laser technology for measurement. It consists of a laser, a laser detector, and a measuring circuit. Laser switches are new types of measuring instruments; their advantages include the ability to perform non-contact long-distance measurement, high speed, high precision, large measuring range, and strong resistance to optical and electrical interference.

pizzato switch classification

Weighing switches are divided into 8 categories based on conversion methods, including photoelectric, hydraulic, electromagnetic force, capacitive, magnetic pole variation, vibratory, gyroscopic, and resistive strain gauge types, with resistive strain gauge being the most widely used. 1) Photoelectric type: includes grating type and code disk type. Grating switches use Moiré fringes formed by gratings to convert angular displacement into optoelectronic signals. There are two gratings: one fixed grating and one moving grating mounted on the dial shaft. The object being measured on the load-bearing platform rotates the dial shaft through a force transmission lever system, driving the moving grating to rotate and causing the Moiré fringes to move accordingly. Using a phototube, conversion circuit, and display instrument, the number of moved Moiré fringes can be calculated to determine the angle of grating rotation, thereby determining and reading the mass of the measured object. Code disk switch: The code disk (symbol plate) is a piece of transparent glass mounted on the dial shaft, featuring black and white codes arranged according to a specific encoding method. When the object on the load-bearing platform causes the dial shaft to rotate via the force transmission lever, the code disk also rotates by a certain angle. A photocell receives the light signal passing through the code disk and converts it into an electrical signal, which is then digitally processed by the circuit, finally displaying a number representing the measured mass on the display. Photoelectric switches were mainly used in electromechanical combination scales. 2) Hydraulic type: Under the action of the gravity P of the measured object, the pressure of the hydraulic oil increases, with the degree of increase proportional to P. By measuring the increased pressure value, the mass of the measured object can be determined. Hydraulic switches have a simple and robust structure and a large measuring range, but accuracy generally does not exceed 1/100. 3) Capacitive type: It operates based on the direct proportional relationship between the oscillation frequency f of the capacitor oscillator circuit and the distance d between the plates. There are two plates, one fixed and the other movable. When the measured object is loaded onto the load-bearing platform, the leaf spring deflects, changing the distance between the two plates, which in turn changes the oscillation frequency of the circuit. By measuring the change in frequency, the mass of the object on the load-bearing platform can be calculated. Capacitive switches consume little power, have low cost, and have an accuracy of 1/200 to 1/500.

pizzato switch features

Resistors, inductors, and capacitors are the three major types of passive components in electronic technology. A capacitive switch is a switch that converts changes in the measured quantity into changes in capacitance; it is essentially a capacitor with variable parameters. Capacitive switches have the following advantages: high impedance, low power, requiring only very low input energy. They can achieve large changes, resulting in high signal-to-noise ratio and system stability. Fast dynamic response, operating frequency up to several megahertz, suitable for non-b contact measurement, applicable to both conductive and semiconductor measured objects. Simple structure, strong adaptability, capable of working in harsh environments such as high/low temperatures and strong radiation, with wide application. With the development of electronic technology and computer technology, disadvantages of capacitive switches such as susceptibility to interference and distributed capacitance are continuously overcome, and capacitive grid displacement switches and integrated capacitive switches have been developed. Therefore, they are widely used in non-electrical quantity measurement and automatic detection, capable of measuring parameters such as pressure, displacement, speed, acceleration, A degree, thickness, liquid level, humidity, vibration, and component content. Capacitive switches have good development prospects.

pizzato switch installation precautions

1) Handle weighing switches with care, especially small-capacity switches using aluminum alloy as the elastic body. Any impact or drop caused by vibration is likely to cause significant output errors. 2) When designing the loading device and during installation, ensure that the axis of the loading force coincides with the force-bearing axis of the weighing switch to minimize the effects of inclined and eccentric loads. 3) Regarding level adjustment. If a weighing switch is used, the installation plane of its base must be adjusted to horizontal using a spirit level; if multiple switches are used for simultaneous measurement, the installation surfaces of their bases should be kept as level as possible. The main purpose of this is to ensure that the force borne by each switch is basically consistent. 4) Determine the rated load of the switch used based on the selection of the weighing switch range specified in its instructions. 5) To prevent chemical corrosion, it is advisable to coat the outer surface of the weighing switch with Vaseline during installation. Avoid use in locations with direct sunlight exposure and drastic environmental temperature changes. 6) Install bypasses made of copper braided wire at both ends of the weighing switch loading device. 7) Cable lines should not be extended arbitrarily. If extension is absolutely necessary, solder the joints and add moisture-proof sealant. 8) It is best to use some baffles to cover the switch around the weighing switch. The purpose of this is to prevent debris from falling into the moving parts of the switch, affecting its measurement accuracy. 9) The cable of the switch should be kept away from high-power power lines or places with pulse waves. If avoidance is impossible, the cable of the weighing switch should be threaded separately into an iron pipe, and the connection distance should be shortened as much as possible. 10) Determine the rated load of the switch used based on the selection of the weighing switch range specified in its instructions. Although the weighing switch itself has a certain overload capacity, such situations should be avoided as much as possible during installation and use. Sometimes short-term overload may cause permanent damage to the switch. 11) For high-precision applications, the/weighing switch and instrument should be used after preheating for 30 minutes.

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