Click to enter the Kuaiyicai mini program ➡️, a procurement platform for bearing industrial control electronics, with 500,000 registered users and over 5,000 real-time demands updated daily. Why not take a look? Abstract Resistance, as one of the most fundamental and ubiquitous components in the electronic world, is the cornerstone of circuit design, fault diagnosis, … Read more
The methods for determining the quality of electronic scale sensors are as follows: 1. Visual Inspection Check if the sensor casing is deformed, cracked, corroded, or damaged; any bending of the elastomer exceeding 0.1mm per meter is considered abnormal. Inspect the terminal connections for oxidation or looseness, check for any broken or damaged cables, and … Read more
For a single-phase motor, connect one probe to ground and measure the resistance of the motor’s starting, running, and common windings. The resistance should be infinite or close to infinite. If there is no resistance or the resistance is very low, it indicates that the motor is faulty. Then measure the resistance of the three … Read more
Search on WeChatTechnical Training01Introduction to Digital Multimeter Digital measuring instruments have become mainstream due to their high sensitivity, accuracy, clear display, strong overload capacity, portability, and ease of use. ▲ Figure 1 Below, we will use this type of digital multimeter as an example to briefly introduce its usage methods and precautions.02Appearance of Digital Multimeter … Read more
Click ↑ Mechanical Professor, Follow Top to become a top student. A multimeter, also known as a multimeter, three-use meter, or multifunction meter, is a multifunctional, multi-range measuring instrument. Generally, a multimeter can measure DC current, DC voltage, AC voltage, resistance, and audio level. Some models can also measure AC current, capacitance, inductance, and parameters … Read more
Testing of the Contactors Using Multimeter Resistance Mode, The Testing Process is as Follows: ① In normal conditions, measure the resistance of the normally open and normally closed contacts. The image below shows the resistance measurement of the normally open contact of the AC contactor in normal conditions. Since the normally open contact is open … Read more
Search on WeChatTechnical Training1. Voltage Checking Method The voltage checking method uses a voltmeter or multimeter on the AC voltage setting to measure live circuits, which is an effective method for locating fault points. The voltage checking method includes voltage step measurement and voltage segment measurement. (1) Voltage Step Measurement During measurement, first set the … Read more
Article from “Power Equipment Management” magazine The clamp ammeter is composed of a current transformer and an ammeter. The core of the current transformer can open when the clamp is tightened; the wire carrying the current to be measured can pass through the opening of the core without being cut. When the clamp is released, … Read more
1. Correct Use of Multimeter To correctly use a multimeter, familiarize yourself with the dial before use. Adjust the two zero position regulators gently. Choose the correct terminal, and insert the red and black probes into the correct holes. Rotate the switch to the correct gear. Choose the appropriate range for accurate measurements. Look at … Read more
Traditionally, laboratories in various countries have used the Thomas (Thomas) 1Ω standard resistor to maintain their representation of ohms. However, in many laboratories, the quantum Hall effect resistance standards are replacing these traditional resistance standards. According to international agreements, starting from January 1, 1990, the definition of ohm has been linked to the von Klitzing … Read more