How to measure the quality of the heating tube? The simple way to distinguish the quality of the heating tube is the street power supply. If the heating tube does not work normally, it means that the heating tube is faulty (whether it generates heat). It is more professional to measure with a multimeter and can better judge the specific reasons for the damage of the heating tube. The following editor will teach you how to measure based on daily maintenance experience.
Heating pipe
Multimeter measurement method:
Use a multimeter, ohmmeter or shake meter to test whether the heating tube power cord is connected well and whether the resistance is connected well. If it's not, that's bad. If it is not, it is bad (internal short circuit). It is good to have power and resistance, and then measure whether the power cord and the outer tube (metal casing) are connected or resistive, not connected (the resistance is infinite).
The resistance value of the x1 resistance of the multimeter used to measure the two connecting piles should generally be in the tens of ohms, but the working voltage and power are not very different.
Heating pipe
The resistance measurement between the connecting pile head and the shell of the resistance shielding layer above X10K should be infinite; due to humidity and other reasons, the resistance between the heating wire and the shell can be measured with a rocker-type measuring instrument, but the resistance value should be above 40M, otherwise it is safe Sexual problems.
In addition to measuring the resistance of the heater tube, the resistance of the heater tube must be measured in megohms, and the housing must not be touched. That is to see if the heating pipe in use is broken.
Stainless steel electric heating tube
Multimeter ohm file measurement is judged in two aspects:
1, the resistance of the two outgoing wires should be normal, 220V, 1000W about 48 ohms, 1500W about 32 ohms, and so on.
2, the (insulation) resistance between any outlet wire and the shell is more than a few megohms.
If the two measured values of 1.2 match, the heating tube is good.
This is the content of how to measure the quality of the heating tube. I hope to help everyone. The electric heating tube of the heating tube controls the power of the heating tube by resistance. If there is a problem with the heating tube, we need to make targeted measurements. Most of the problems will appear. The resistance of the heating tube is damaged.