With NPT screw tooth bimetallic thermometer is introduced

The NPT is the common thread on the market, has also been used to the bimetallic thermometer. Instrument for everybody to introduce with NPT screw tooth bimetallic thermometer. NPT screw tooth often for joint of the bimetallic thermometer, bimetallic thermometer is a kind of measurement in the field of low temperature test instrument. Bimetallic thermometer can be directly measured in the process of various production - 80 ℃ ~ + 500 ℃ within the scope of liquid, steam and gas medium temperature. NPT is a conical sealing thread, there is a limit, the limit and then twist will destroy the thread, you should pay attention to when using. NPT thread is an American standard taper pipe threads 60 degrees, can be divided into general sealing of cylindrical pipe thread and general sealing tapered pipe thread, cooperate way by & other; Cone/cone & throughout; Cooperate, & other; Column/cone & throughout; To cooperate. NPT cooperate way: cylindrical internal thread and cone of external thread & other Column/cone & throughout; Cooperate; Of taper thread and taper thread within & other Cone/cone & throughout; To cooperate. Bimetallic thermometer now commonly used NPT screw tooth is 1/4 & throughout; Throughout the NPT and 1/2 &; NPT。 Bimetallic thermometer is a round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, the other end of the connection on a thin shaft, called the free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, corresponding temperature indicator on the dial.