Multipath analog quantity industrial acquisition device

The utility model discloses a multipath analog quantity industrial acquisition device comprising the following elements: at least two sensors used for detecting and obtaining analog quantity; a channel switching circuit connected with the sensors; an analog-to-digital conversion circuit used for carrying out analog-to-digital conversion for to the analog quantity inputted by the channel switching circuit; a processor connected with the analog to digital conversion circuit and the channel switching circuit through a magnetic isolation circuit. The multipath analog quantity industrial acquisition device is provided; the magnetic isolation circuit can prevent the interferences to the channel switching circuit by high frequency oscillation signals in the analog to digital conversion circuit, so an interference source is isolated from easily interfered portions, thereby isolating on site interferences; compared with optical coupler isolation, the magnetic isolation circuit is high in reliability, long in service life, high in performance, low in power consumption, and compact in sealing, thereby increasing usage stability and data acquisition accuracy of the device.