This instrument is a highly accurate, fully digital industrial instrument carefully developed by all the scientific and technical personnel of our company according to the relevant provisions of the national standard GB507-1986 and the line standard DL/T846.7-2004, giving full play to its own advantages, after many field tests and long-term unremitting efforts. In order to meet the needs of different users, this series of instruments can be divided into single cup three cups and multi-cup models. The instrument is easy to operate and beautiful in shape. Due to the use of automatic digital microcomputer control, the measurement accuracy is high, anti-interference ability is strong, safe and reliable.