How to measure the power of the heat pipe with a multimeter
The heating tube can be regarded as a purely resistive load, and the current flowing through the heating tube is purely active current. With the AC current measurement function of the clamp multimeter to measure out the heating tube work when the current. With the current value multiplied by the rated voltage of the heating tube to arrive at the value is the power of the heating tube (wattage).
Such as an electric heating tube rated voltage is 220 volts, the measured current is about 2 amps, then the power of the heating tube is about four hundred and forty watts. If the rated voltage of the heater is 380 volts and the measured current is about 1 amp, then the power of the heater is about four hundred watts.
One thing to keep in mind here is the rated voltage of the heating tube. A heater rated at 220 volts plugged into 380 volts will quickly burn out the heating wire because of the high voltage. Conversely, the rated voltage is 380 volts of the heating pipe into the 220-volt voltage, will not reach the rated voltage and not reach the rated power.
In actual production, often 220-volt and 380-volt electric heating tube are applied, order electric heating tube, it is best to let the manufacturer use the steel seal in the heating tube shell on the rated voltage. To avoid confusion.
