What is the difference between a multimeter and a test pen
Function: A multimeter is a multifunctional electronic measuring instrument mainly used to measure electrical parameters such as voltage, current, and resistance. Some multimeters can even measure the main parameters of transistors and the capacitance of capacitors. The measuring pen is mainly used to detect the current in circuits, especially in AC circuits, distinguish between AC and DC, measure the positive and negative poles of DC, and can also measure the in-phase or out of phase of phase lines.
Usage: The test pen usually only needs to lightly touch the circuit to detect the current, without the need to connect the pen to the circuit. A multimeter, on the other hand, needs to connect the meter head to the circuit and select the appropriate measurement gear before measuring parameters such as current, voltage, or resistance.
Measurement range: The measuring pen mainly detects the current in the AC circuit and is a very simple measurement tool that can be used for checking household circuits, etc. A multimeter can be used in more complex and precise circuits, measuring various parameters such as DC voltage, AC voltage, current, resistance, capacitance, etc. It is usually used in industries, electronics, machinery, and other fields.
Safety: The use of the test pen is very simple, but due to the lack of circuit connection protection, improper use may cause hazards such as electric shock. The measurement of a multimeter requires a connected circuit and usually has the function of protecting the circuit, so its safety is much higher than that of a measuring pen.
In summary, there are significant differences between a multimeter and a measuring pen in terms of functionality, usage, measurement range, and safety. The multimeter has powerful functions and a wide measurement range, but the operation is relatively complex; The test pen, on the other hand, has a simple function and is mainly used for household circuit checks. It is easy to operate but has low safety. In practical applications, appropriate tools should be selected based on specific needs.
