Tension measuring sensor is a major part of tension control system, there are many kinds of tension sensors in the market, common ones include plate spring micro-displacement sensors, piezomagnetic sensors, resistance strain sensors, and there are huge variations in principle and structure. When the tension measuring sensor is determined, The matching measuring methods and equipment can also be determined. So the success or failure of measuring result largely depends on the selection of tension sensor. How to buy an appropriate tension measuring sensor? The following things are included:

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Weight sensor is a device which can transform the gravity in a certain ratio into measurable output signal. According to the transformation methods, weighing sensors can be divided into many types such as photoelectric, hydraulic, electromagnetic force, capacitive, vibration, gyroscope, resistance stain, etc, and resistance stain type sensors are most widely used. This paper briefly introduces the basic technical parameters of the weight sensors.

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Tension control system are broadly used in industrial applications such as papermaking, adhesive tape production, cable production, film production, packaging industry, printing industry, etc. Stable material tension is crucial to product quality during winding process.

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Transformation object： forced draft motor & induced draft motor of six ton steam boiler. Transformation target： energy saving, improve combustion efficiency of boilers and reduce the atmospheric pollution. Motor specification: forced-draft motor power: 5.5KW, induced draft motor power: 18.5KW

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Since PLC came into being, it has realized leap-type development from wiring logic to storage logic. Its function from weak arrive strong, carried out logic control to digital control. Applications become more and more widely, It made a leap from simple control for single equipment to various tasks such as motion control, process control, distributed control, etc. Nowadays PLC has greatly improved its capabilities in analog processing, digital operation, human-computer interface and networks, becoming an essential control equipment in industry control fields, developing a more and more big function in all walks of life.

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PLC is also called programmable logic controller, there are more and more kinds and brands of PLC in the market, and their application fields are more and more widely, PLC plays a more and more important role in industry control especially in sequential control, it has no substitute in the foreseeable future. Generally manufacturers will write the software for PLC before it leaves the factory, but frequently we need to rewrite the PLC program to meet production requirements. This requires our software engineers to develope a good habit in daily programming. No one can draw a square and a circle without proper tools, following are the basic steps of PLC software programming:

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