Portable bolt ultrasonic Phased array Detector SF-PA2020 is the industry's smallest bolt detection phased array module, weighing only about 500 grams. Suitable for testing wind power, thermal power and other industries, various types of bolt in service testing. At the same time, it supports the expansion of various application scenarios APP, such as plane array, TFM mode, conventional phased array mode, etc., and can be equipped with a number of self-developed ultrasonic probes.