Analysis of the classification and working principle of the water immersion detector!

The name of the water immersion detector is a kind of detector product used to detect whether the house leaks water. The common water immersion immersion detectors on the market mainly include photoelectric and cable type detectors, which are also divided into contact water. Dip detector and non-contact water immersion detector. Then, we will briefly introduce these two kinds of water immersion detectors for you.

Photoelectric water immersion detector: The biggest difference between photoelectric water immersion detector and probe type water immersion detector is that it does not depend on liquid conductivity, but when the liquid contacts the probe, the refractive index of the probe and air contact surface changes greatly. The leakage of water is judged by the change of the internal light of the probe, and the water leakage alarm signal is issued. The photoelectric water immersion detector has the unparalleled advantages of the probe, but the production cost is relatively high due to high technical requirements.

Therefore, we are currently the most used is the simplest and cheapest type of flooding detector probe, which is currently flooding the market to see most of the probe when the probe feet of water in contact with the probe impedance appearing The larger change, that is, the difference between the resistance of the air and the resistance of the water, is judged by the corresponding circuit whether there is a water leakage and a water leakage alarm signal is issued.

The probe type water immersion detector can be divided into two types: "no positioning water immersion detector" and "positioning water immersion detector".

The detection principle of the non-positioning water immersion detector is similar to that of the probe type. The two cores that do not locate the water leakage sensing line are equivalent to the two legs of the probe, and the corresponding circuit determines whether there is water leakage and sends a water leakage alarm signal. However, the monitoring area of ​​the non-positioning sensing line is larger and the sensitivity is higher. At the same time, the non-locating leaking wire core is processed by the conductive polymer material, and has the characteristics of anti-nuclearization and long service life with respect to the probe.

The positioning water immersion detector also uses the conductivity of water to detect water leakage. The positioning leak detection line adds a 2-core signal line on the basis of non-positioning. At the same time, in order to achieve the function of precise positioning, the resistance of the 2-core immersion line is proposed. The high requirement, that is, the uniform resistivity, is also the reason for the difficulty and high price of positioning the water immersion detector .

Although probe-type water immersion detectors are more common in applications, we have to choose the type of water-sensing detectors according to our own environment. These are just some of the knowledge about water-immersed detectors provided by customers.