At the beginning of the purchase of the transmitter, the first thing to do is to select the transmitter. Threads are one of the most important ones. Whether the thread selection of the transmitter is correct or not will directly affect whether the transmitter can be installed and used normally. The thread selection of the transmitter must be adapted to the conditions in the field. The transmitter can be installed and operated properly. A thread is a continuous convex part of a specific cross-section made in the shape of a helix made on the surface of a cylinder or conical matrix. The threads used in the transmitter are divided into cylindrical threads and conical threads according to their parent shapes; According to its position in the matrix, it is divided into external thread and internal thread, and according to its cross-sectional shape (tooth shape), it is divided into triangular thread, rectangular thread, trapezoidal thread, zigzag thread and other special shape threads. Metric threads are expressed by pitch, and American and British threads are expressed by the number of threads per inch, which is their biggest difference, the metric thread is 60 degrees equilateral, the imperial thread is isosceles 55 degrees, and the American thread is 60 degrees. Metric units are used for metric threads, and imperial units are used for American and British threads. The pipe thread is mainly used to connect the transmitter and the pipeline, and the internal and external threads are closely matched, and there are two kinds of straight pipes and conical pipes. The nominal diameter refers to the diameter of the pipe to which it is connected, and obviously the thread diameter is larger than the nominal diameter. 1/4, 1/2, 1/8 is the nominal diameter of an inch thread, and the unit is inches. In addition, the 1/4, 1/2, and 1/8 marks in the transmitter thread refer to the diameter of the thread size in inches. Insiders usually use points to refer to the thread size, one inch is equal to 8 points, 1/4 inch is 2 points, and so on. The transmitter generally uses G1/4 or G1/2 external thread, of course, customers can also customize the thread according to the requirements of the field equipment to ensure the accurate connection between the transmitter and the equipment and normal use. If you have any questions about product consultation, product customization, agency, technical inquiry, quotation, etc., please contact Xingyi: 400-600-4496!