How to calculate the resistance value of electric cartridge heater
There is a close relationship between the voltage, resistance and power of the cartridge heater. To better calculate the resistance value of the cartridge heater, you must first understand the two parameters of voltage and power. Only by determining these two parameters can you be better Calculate the size of the resistance value.
Calculation formula of cartridge heater resistance value
Resistance = voltage * voltage / power
Example: What is the resistance value of a 220V 1500W heating tube?
According to the formula above: resistance = 220 * 200/1500 = 32.27 ohm
In addition to calculating the resistance value, we can also use a special device to measure the resistance value of each model of the cartridge heater. The most common multimeter now can effectively measure the resistance value of various types of cartridge heater.