Bimetallic thermometer technical standard should be what?

As we all know, bimetallic thermometer is widely applied in life! Can say is common in every field, but the bimetallic thermometer has a lot of technical standard requirement, so, what are the standard requirements for bimetallic thermometer? Here are combined with production technology of our company standard and national and industry of bimetallic thermometer in the production of the above technical requirements specifically: 1. Bimetallic thermometer components assembly wants firm, shall not be loose, can not have corrosion, cases should be strong, uniform and smooth. 2. Bimetallic thermometer used in the header should be transparent glass or other transparent material, shall not interfere with the correct reading defect or damage. 3. Bimetallic thermometer scribed line on the dial, Numbers, and other marks shall be complete, clear and correct. 4. 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. 5. Should be marked on the thermometer dial factory name ( Or factory standard) , model, factory number, international temperature scale c symbol & other; ℃” , accuracy grades, make the symbol and serial number and calendar year, as well as measuring instruments manufacturing license. Electric contact thermometer should also be designated on the shell on the dial or contact rated power, contact the highest operating voltage ( Ac or dc) , the largest engineering current, a sign of earthing terminal. 6. 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. 7. In the environmental temperature for 15 35 ' C, town under the condition of 85% relative humidity, the output terminal of electric contact thermometer and earthing terminal ( Or shell) And between the output terminals of the insulation resistance between should not less than the specified value of countries. Bimetallic thermometer as a temperature measuring instrument of thermodynamic parameters, technical requirements are related national standards and technical requirements, the manufacturer must be carried out in accordance with the national standards for production, then the buyer also must pay attention to when buy technology conform to national or international standards.