Testing device capable of analyzing cooling tower performance in real time in online mode

The invention discloses a testing device capable of analyzing cooling tower performance in real time in an online mode. The testing device comprises a PC machine, a sound level meter, an ultrasonic flower meter, a collecting module and a collecting device, wherein the collecting device is connected to the collecting module, the collecting module is connected with the PC machine through an RS484 to transmit data, and the sound level meter and the ultrasonic flow meter are directly connected with the PC machine through RS232s to transmit data. The testing device can guarantee accuracy and effectiveness of data, reduces labor and material resources to the maximum degree and meanwhile can comprehensively evaluate the cooling tower performance in real time.