The Dianzhiyan heating wire life testing machine is mainly used to test the number of smoking ports, smoke temperature, vibration frequency, and display status of test lights. The principle is to adjust a certain amount of suction or suction pressure, and the suction nozzle sucks and stops the sample. This cycle is repeated until the dianzhiyan or dianzhiyan battery is exhausted or drops to a certain voltage. Based on this, the service life of dianzhiyan or dianzhiyan battery can be determined and improved.

In Dianzhiyan, the heating wire is responsible for heating and evaporating e-liquid, thereby generating mist, also known as resistance wire, which is actually a metal wire or alloy wire. The resistance of the heating wire changes with temperature, and currently Dianzhiyan's temperature control technology is based on this characteristic of metal to achieve temperature control function. For example, the resistance of a heating wire at room temperature is 0.1 Ω. After being powered on, if the temperature rises to 100 ℃, the resistance changes to 0.13 Ω, then to 0.15 Ω at 200 ℃, and to 0.19 Ω at 300 ℃. Based on this resistance change pattern, the chip will calculate the temperature of the heating coil. And this resistance change law is the "TCR" temperature resistance change coefficient. The "TCR" value of each material is different. Therefore, if different materials of coils are used, there must be TCR data corresponding to the material inside the host chip in order to obtain the temperature corresponding to the resistance change of the coil through coefficient conversion based on the initial resistance.

1) Determine 4 specific nitrosamine compounds according to FDA technical documents

2) Test harmful substances such as propylene glycol and diethylene glycol in e-liquid.

3) Determination of heavy metals in dianzhiyan oil by methods of heavy metal analysis

4) Request to test the microbial content and anti-corrosion efficacy of dianzhiyan.