WONDERWARE electrical components Germany WONDERWARE model WONDERWARE price

WONDERWARE electrical components are instruments used to transform voltage. However, the purpose of a transformer in transforming voltage is to facilitate the transmission of electrical energy, so its capacity is large, generally calculated in kilovolt-amperes or megavolt-amperes; whereas the purpose of a voltage transformer in transforming voltage is mainly to supply power to measuring instruments and relay protection devices, to measure the voltage, power, and electrical energy of the line, or to protect valuable equipment, motors, and transformers in the line when a fault occurs. Therefore, the capacity of a voltage transformer is very small, generally only a few volt-amperes or tens of volt-amperes, and the maximum does not exceed one thousand volt-amperes.

WONDERWARE electrical component principle

Based on different purposes, various types of thermometers have been designed and manufactured. The design basis includes: the phenomenon of thermal expansion and contraction of solids, liquids, and gases under the influence of temperature; the change in pressure of gas (or vapor) due to temperature differences under constant volume conditions; the effect of thermoelectric effect; the change in resistance with temperature; the influence of thermal radiation, etc. 1. Gas thermometer: Hydrogen or helium is mostly used as the temperature-measuring substance because their liquefaction temperatures are very low, close to absolute zero, so their temperature measurement range is very wide. This type of thermometer has high accuracy and is mostly used for precision measurements. 2. Resistance thermometer: Divided into metal resistance thermometers and semiconductor resistance thermometers, both are made based on the characteristic that resistance value changes with temperature. Metal thermometers mainly use pure metals such as platinum, gold, copper, and nickel, as well as rhodium-iron and phosphor bronze alloys; semiconductor thermometers mainly use carbon, germanium, etc. Resistance thermometers are convenient and reliable to use and have been widely applied. 3. Thermocouple thermometer: It is a temperature-measuring instrument widely used in industry. It is made using the thermoelectric effect. Two different metal wires are welded together to form the working end, and the other two ends are connected to the measuring instrument to form a circuit. When the working end is placed at the temperature to be measured, if the temperature of the working end is different from that of the free end, an electromotive force will appear, and thus current will flow through the loop. By measuring electrical quantities and using the known temperature at one point, the temperature at another point can be determined. It is suitable for situations with large temperature differences between two substances and is mostly used for high-temperature and low-turbidity measurements. 4. Pointer thermometer: It is a thermometer shaped like a dashboard, also known as a room thermometer, used to measure room temperature, made using the principle of thermal expansion and contraction of metals. It uses a bimetallic strip as the temperature-sensing element to control the pointer. The bimetallic strip is usually made by riveting a copper sheet and an iron sheet together, with the copper sheet on the left and the iron sheet on the right. Since the thermal expansion and contraction effect of copper is much more obvious than that of iron, when the temperature rises, the copper sheet pulls the iron sheet to bend to the right, and the pointer deflects to the right under the drive of the bimetallic strip (pointing to high temperature); conversely, when the temperature drops, the pointer deflects to the left under the drive of the bimetallic strip. 5. Glass tube thermometer: Glass tube thermometers utilize the principle of thermal expansion and contraction to achieve temperature measurement. Due to the different expansion coefficients, boiling points, and freezing points of the temperature-measuring media, the common glass tube thermometers mainly include: kerosene thermometers, mercury thermometers, and red ink thermometers. Its advantages are simple structure, ease of use, relatively high measurement accuracy, and low price. The disadvantages are that the upper and lower measurement limits and accuracy are limited by the quality of the glass and the properties of the temperature-measuring medium. Moreover, it cannot transmit signals over long distances and is fragile. 6. Pressure thermometer: Pressure thermometers use the volume expansion or pressure change generated by heating liquid, gas, or saturated vapor in a closed container as the measurement signal. Its basic structure consists of three parts: a temperature bulb, a capillary tube, and an indicator gauge. The advantages of pressure thermometers are: simple structure, high mechanical strength, and resistance to vibration. Low price and no need for external energy. The disadvantages are: limited temperature measurement range; large heat loss and slow response time. 11. Mercury thermometer is a type of expansion thermometer, which can only be used as a local monitoring instrument. Using it to measure temperature is not only simple and intuitive but also avoids the errors of external remote transmission thermometers.

WONDERWARE electrical component applications

Dedicated solid-state relays can feature short-circuit protection, overload protection, and overheat protection. When combined with hardwired combinational logic packaging, they can form intelligent modules tailored to user requirements for direct use in control systems. Solid-state relays are widely used in computer peripheral interface equipment, constant temperature systems, temperature regulation, electric furnace heating control, motor control, CNC machinery, remote control systems, and industrial automation devices; signal lights, dimming, flashers, and stage lighting control systems; instruments and meters, medical devices, copiers, and automatic washing machines; automatic fire fighting and security systems, as well as switching switches for power capacitors used in grid power factor compensation. Additionally, they are extensively used in chemical, coal mining, and other environments requiring explosion-proof, moisture-proof, and corrosion-resistant properties.

WONDERWARE electrical component features

Among various switches, there is a component with the ability to "sense" objects approaching it—the displacement sensor. Utilizing the sensitivity of the displacement sensor to approaching objects achieves the purpose of controlling the switch on or off, which is the proximity switch. When an object moves towards the proximity switch and approaches within a certain distance, the displacement sensor "senses" it, and the switch acts. This distance is usually called the "detection distance." Different proximity switches have different detection distances. Sometimes the detected object moves towards the proximity switch one by one at certain time intervals, and then leaves one by one, repeating this process continuously. Different proximity switches have different response capabilities to the detection object. This response characteristic is called "response frequency."

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