Several requirements for the layout of temperature measuring instruments

1. Thermometers and thermocouples should be installed on straight pipe sections. The minimum pipe diameter required for installation is as follows:

1) Industrial mercury thermometer, DN50;

2) Thermocouples, thermal resistors, bimetallic thermometers, DN80;

3) Pressure thermometers, DN150;

4) The length of the expanded pipe should not be less than 250mm.

2. When thermometers and thermocouples are installed at the bend of the pipeline, the pipe diameter should not be less than DN40, and they should be in countercurrent contact with the flow direction of the fluid in the pipe.

3. The thermometer can be installed vertically or tilted at 45°. When installed at a tilt of 45°, it should be in countercurrent contact with the flow direction of the fluid in the pipe.

4. The installation height of the on-site indicating thermometer should be 1.2~1.5m. When it is higher than 2.0m, a straight ladder should be installed to form a movable platform. In order to facilitate maintenance, the minimum distance from the platform should not be less than 300mm.

5. For process pipelines with branches, when installing thermometers or thermocouples, special attention should be paid to the installation location being consistent with the process flow, and they should not be installed in dead corners or blind spots of the process pipeline.