The national standard of bimetallic thermometer

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. The bimetallic thermometer national standards JB/T8803 - 2015. Bimetallic thermometer is the technology of production should meet the national standards, technical requirements on production manufacture bimetallic thermometer are: 1. Bimetallic thermometer pointer should cover ( Into) A quarter - the shortest dividing line 3/4, pointer indicating the width should not be more than the shortest dividing line width. 2. Bimetallic thermometer components assembly wants firm, shall not be loose, can not have corrosion, cases should be strong, uniform and smooth. 3. Bimetallic thermometer used in the header should be transparent glass or other transparent material, shall not interfere with the correct reading defect or damage. 4. Bimetallic thermometer scribed line on the dial, Numbers, and other marks shall be complete, clear and correct. 5. Bimetallic thermometer pointer and dial the distance between the plane should be not more than 5 mm, but should not touch the dial for adjustable Angle of bimetallic thermometer should be in the inspection from the axial ( Or radial) Position to the radial ( Or axial) The whole process of the position. 6. Bimetallic thermometer in the case of normal use shall be regular inspection. Is every six months. Electric contact thermometer is not allowed to work under strong shock, so as not to affect the reliability of the contact. 7. The bimetallic thermometer should be - 30 ℃ ~ 80 ℃ environment temperature in normal work.