Negative ion detector negative principle description and selection classification
Negative ion detector principle, negative ion detector selection classification Air anion detector principle The air ion meter is a special instrument for measuring gas ions in the atmosphere. It can measure the concentration of air away from the ion, distinguish the positive and negative polarity of the ion, and distinguish the size of the measured ion according to the difference of ion mobility. A capacitive collector is typically used to collect the charge carried by the air ions and measure the current formed by these charges through a micro-current meter. The measuring instrument should include four parts: polarized power supply, ion collector, micro current amplifier and DC power supply. Depending on the structure of the collector, the mainstream negative ion detector can be divided into two types: parallel plate type and Gerdien condenser type/double cylinder type. 1. Ebert/parallel plate type ion detector The parallel plate type ion detector is a commonly used method for low-end air ion detectors. A and B are a group of parallel and insulated electrodes. The end of the B pole is surrounded by a circular bipolar electrode. The air is sucked through the fan in the lower right corner. The negative ion in the air strikes the A/B electrode and the charge is conducted to the E. The ring electrode is self-discharged and the discharge signal is recorded so that the number and size of positive and negative ions in the air can be measured. The detector is relatively mature in technology and low in cost, but is susceptible to the external environment. In addition, the weakness of the structure itself tends to cause an electrolytic edge effect, which easily causes turbulence of the airflow, resulting in a large deviation of the detection result. 2. Gerdien condenser / double cylinder shaft The double cylinder axis ion detector is a mature method for the current high-end air ion detector. The whole structure is composed of three concentric cylinders. The outer cylinder and the inner shaft are electrodes. When the air passes through the cylinder, the ions collide with the shaft to generate discharge, and the discharge signal is recorded, so that the quantity and size of positive and negative ions in the air can be performed. measuring. This kind of detector is very mature in technology, but due to the complicated internal structure and control, the cost is high. This structure can effectively solve the electrolytic edge effect inherent in the parallel electric plate structure, and the structure of the cylinder itself and the special intake air. The method can maintain the smoothness of airflow, and the detection accuracy of the number and size of ions is greatly improved. Air negative ion detector selection The United States AIC negative ion detector distributor - Beijing Tianzheng Renhe, the only domestic seller, integrity first, the letter-based negative ion detector distributor l Universal air negative ion detector: NKMH-103NKMH103 high precision dual mode negative ion detector AIC1000/2000 Air Negative Ion Detector KEC900/990 high precision negative ion detector These three instruments are all parallel plate-type structures, with wide adaptability and large measuring range. They are suitable for the performance of various negative ion generators (air fresheners, negative ion air conditioners, hair dryers) and functional anion products (gems, tourmalines, etc.). Detection, environment (hot springs, SPA, essential oils, waterfalls, forests) ion concentration measurement and online measurement under various conditions. l Functional ore products air negative ion detector COM-3010pro ore negative ion detector This product belongs to the Gerdien condensing tube structure and is specially designed to adapt to the negative ion release concentration of various functional ore bracelets, natural ores (tourmaline), ceramics, negative ion powder and other related products. With high precision and accurate measurement, it has the function of connecting fast thermal printers, which can facilitate the live demonstration of negative effects of such products. l Special air ion detectors such as forestry bureaus and research institutions COM-3200pro high precision negative ion detector COM-3400 Enhanced High Precision Negative Ion Detector COM-3600 high precision professional negative ion detector COM-3800 high precision professional negative ion detector These four products are specially designed by JIS Japan's Gerdien condenser type/double cylinder shaft structure. They have high measurement accuracy and wide measurement range. The high-precision, long-life sensors are specially reinforced and can be adapted to different occasions. The application in extreme environment, with perfect data interface and equipped with special control software, can realize remote real-time uninterrupted control measurement, fully meeting the requirements of forestry bureaus and research institutes. Mobility and ion size The ion mobility K (unit: cm2 / V·sec) expresses the degree of ion motion speed. That is, the rate at which the ion moves (in cm / sec) when the electric field strength E = 1 V / cm, which also indicates the size of the ion volume. Because at the same electric field strength, the larger the corresponding ion volume, the slower the running speed, and the smaller the volume, the faster the running speed. Therefore, the larger the ion mobility K value, the smaller the ion volume, and the smaller the K value, the larger the ion volume. Air ions, according to their mobility (unit: cm2 / V · sec), can be divided into large, medium and small ions, ion mobility greater than 0.14 for small ions, and only small ions, or called small ion groups In order to enter the organism, the inhalation of the human body is mainly based on the combination of the hydrated ion hydrate hydrate and the carbonate oxygen ion group. Researchers have studied the effects of small negative oxygen ion clusters on the human body. It is mainly through three ways of lung respiration: one, local can accelerate the movement of airway epithelial ciliary; second, after the body fluid enters the blood, it emits electric charge. In cells, proteins, and then oxidize, inhibit serotonin in the blood; Third, the reflection of the inner receptor, the nervous system, and the brain's central nervous system and autonomic nervous system, its charge through the blood-brain barrier, into the cerebrospinal fluid, Until the nerve function is affected. 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