hot-wire ammeter

简明释义

热线式安培表

英英释义

例句

1.To ensure accurate readings, the engineer calibrated the hot-wire ammeter before starting the experiment.

为了确保读数准确，工程师在开始实验前对热丝电流表进行了校准。

2.The technician used a hot-wire ammeter to measure the current flowing through the circuit.

技术人员使用热丝电流表测量电路中的电流。

3.He demonstrated how to connect the hot-wire ammeter to the power supply safely.

他演示了如何安全地将热丝电流表连接到电源。

4.The hot-wire ammeter showed a significant increase in current during the test.

热丝电流表在测试期间显示电流显著增加。

5.In HVAC systems, a hot-wire ammeter is essential for monitoring electrical loads.

在暖通空调系统中，热丝电流表对于监测电负载至关重要。

作文

The concept of measuring electrical current is fundamental in the field of electronics and electrical engineering. One of the most interesting devices used for this purpose is the hot-wire ammeter. A hot-wire ammeter (热丝电流表) is a type of ammeter that measures the current flowing through a conductor by utilizing the heating effect of the electric current. This device operates on the principle that when an electric current passes through a conductor, it generates heat due to its resistance. The amount of heat produced is directly proportional to the current flowing through the conductor, making it an effective tool for measuring electrical current accurately.The hot-wire ammeter consists of a thin wire made of a material with a high resistance, which is usually placed in a controlled environment where the temperature can be measured. As the current flows through this wire, it heats up, and the degree of heating can be correlated to the strength of the current. This correlation is established through calibration, allowing the device to provide precise measurements of current in various electrical circuits.One of the significant advantages of using a hot-wire ammeter (热丝电流表) is its ability to measure alternating current (AC) effectively. Unlike traditional ammeters that may struggle with AC measurements, the hot-wire ammeter can respond quickly to changes in current direction and magnitude, making it suitable for applications in AC circuits. This feature makes it particularly valuable in laboratories and industries where AC is the primary form of electrical energy.Moreover, the hot-wire ammeter is known for its sensitivity and accuracy. It can detect small currents that other types of ammeters may overlook, providing engineers and technicians with reliable data for their experiments and projects. The design of the hot-wire ammeter allows for quick readings, which is essential in dynamic environments where current levels may fluctuate rapidly.However, there are some limitations to the hot-wire ammeter. For instance, it is not suitable for measuring direct current (DC) in all situations, particularly when precise measurements are required. Additionally, the device can be affected by ambient temperature changes, which can influence the readings if not properly calibrated. Therefore, users must take care to maintain consistent environmental conditions to ensure accurate measurements.In conclusion, the hot-wire ammeter (热丝电流表) is an essential instrument in the realm of electrical measurement. Its ability to measure AC currents accurately and its sensitivity to small changes in current make it a preferred choice for many professionals in the field. Understanding how to utilize and interpret the readings from a hot-wire ammeter is crucial for anyone working with electrical circuits. As technology advances, the principles behind devices like the hot-wire ammeter continue to play a vital role in enhancing our understanding of electricity and improving the efficiency of electrical systems worldwide.