Air detector for single plasma collector

The utility model discloses an air detector for a single plasma collector. The air detector comprises a shell, a signal transmitter, a signal receiving piece, a circuit board and an alarm device, wherein the signal transmitter, the signal receiving piece and the circuit board are installed inside the shell, and the alarm device is connected with the circuit board. An installation portion for installation of consumables is arranged at the upper portion of the shell. The signal transmitter and the signal receiving piece are located on the two sides of the installation portion respectively and connected with the circuit board. The air detector can be conveniently installed on the single plasma collector through a connector, ultrasonic waves transmitted by the signal transmitter penetrate through a consumable pipeline to be received by the signal receiving piece, and data signals are transmitted to the circuit board; once air is found, an alarm is given through the alarm device; both the signal transmitter and the signal receiving piece are energy change pieces, the components are mainly adhesively installed and are in screw-thread fit, and the air detector is simple in overall structure and low in manufacturing cost and has the market popularization value.