Product introduction RJ-3 high-frequency near-field electric field measuring instrument is a special instrument for measuring the electric field and magnetic field strength in the short and medium wave range. It is mainly used in labor protection, environmental protection, labor hygiene and other work. It is specially used to measure the near field strength and environmental field strength of high-frequency equipment such as high-frequency welding, high-frequency heat sealing machine, high-frequency quenching, RF** equipment, FM radio, TV transmitter and other high-frequency equipment in order to follow the standards Determine the scope of the hazard and take appropriate effective protective measures. It can be used by units related to high-frequency functions such as labor protection, environmental monitoring, scientific research, troops, schools, factories, etc. Product parameters 1, frequency range: 20~200MHz2, measurement range: 0~450V/m first grade 0 ~ 30V/m, second grade 30 ~ 150V/m, third grade 50 ~ 450V/m3, error: the whole machine measurement error ± 30% 4, use conditions: ambient temperature -10 ~ +40 ℃; relative humidity below 80% 5, power supply 4F22 6V laminated battery 2 sections 6, Style: portable 7, box size: 440mm×320mm×120mm8, weight: about 2kg 3. Product features The RJ-3 high-frequency near-field electric field measuring instrument has the characteristics of small size, high accuracy, easy to carry, easy to operate, and lower price than the same imported products 02.