The utility model discloses a tester that suitability is strong, including operation panel and PLC controller, the upper end of the left and right sides of operation panel is constructed to construct with the flexible fixed knot in the right side through the flexible fixed knot in a left side and is installed the mounting panel, the cylinder is installed to the middle part lower extreme of mounting panel, the connecting plate is installed to the lower extreme of the telescopic shaft of cylinder, ultrasonic transmitter and sensitive pressure sensor are installed respectively to the left and right sides of the lower extreme of connecting plate, the ultrasonic wave receiver is installed on the top of operation panel under the ultrasonic transmitter, the input of PLC controller and sensitive pressure sensor's output electric connection, PLC controller and ultrasonic transmitter and ultrasonic wave receiver electric connection, this tester that suitability is strong, simple structure, convenient operation measures fast, and measurement accuracy is high, and the adjusting function is good, and long service life has very strong suitability, is fit for extensive the popularization.