Type identification WSS bimetallic thermometer instrument can teach you

A lot of people when asked bimetallic thermometer only gave a model specification, but sometimes I don't know what is the meaning of these models, how to know what the bimetallic thermometer number WSSxxx? Domestic represented bimetallic thermometer with a serial number WSSxxx now, but when you see such as WSS401 number, you know what this means? The following by the instrument to tell you the number represented by the mean. Please look at the chart below: W– Temperature instrument S– Metal expansion type S– Thermal bimetal component so that WSS bimetallic thermometer. The first number, dial 0 represents the diameter is 25 mm in diameter, 1 represents is 40 mm in diameter, 2 representative is 50 mm in diameter, three representative is 60 mm diameter, 3 b on behalf of the diameter is 80 mm, 4 representative diameter is 100 mm, 4 b represents the diameter is 120 mm, five representative diameter is 150 mm. Second number: installation if installation is axial, with 0; If it is in accordance with the way the radial with 1 representative; If it is an Angle of 135 degrees to install in 2 representative; If it is a universal way of installation with 8 representative. The third number: 1 representative non-fixed device installation way; 2 represents the male connection, for example, 1/2 & throughout; Outside the NPT/BSP thread; 3 on behalf of the threaded pipe joint; Four representative fixed external thread; 5 on behalf of the adjustable pipe joint; 6 on behalf of the fixed flange; 7 on behalf of the movable flange. The fourth number: access M16X1 thread 1 representative. 5 thread; 2 representative M27X2 thread; Three represents 1/8 & throughout; The NPT thread; Four representative throughout 1/4 &; The NPT thread; 5 1/2 & representative throughout; The NPT thread; 6 represent the 3/4 & throughout; The NPT thread; 7 on behalf of the other. Such as serial number WSS4025 represents what mean? Can see from the above description and chart, a diameter of 100 mm WSS4025 represents the header of the axial outer nipple for 1/2 & throughout; The NPT bimetallic thermometer. Again for instance number WSS311, represents the meaning of meter diameter of 60 mm radial bimetallic thermometer without fixed installation. Now you know how to identify the serial number of bimetallic thermometer?