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Temperature measuring instrument layout requirements:

(l) thermometers and thermocouples should be installed on the straight pipe section, and the installation requirements * small pipe diameters are specified as follows:

(a) Industrial mercury thermometer, DN50;

(b) Thermocouples, thermoresistors, bimetallic thermometers, DN80;

(c) Pressure thermometer, DN150;

(d) The expanded pipe length should not be less than 250mm.

(2) When the thermometer and thermocouple are installed at the bend of the pipe, the diameter of the pipe should not be less than DN40, and the flow direction of the pipe is in countercurrent contact.

(3) The thermometer can be vertically installed or tilted 45° installation, tilted 45° installation, should be countercurrent contact with the fluid flow in the tube.

(4) The installation height of the field indicating thermometer should be 1.2~1.5m. When it is higher than 2.0m, a straight ladder should be set into an active platform. In order to facilitate maintenance, the minimum distance from the platform should not be less than 300mm.

(5) For the process pipeline with branches, when installing the thermometer or thermocouple, pay special attention to the installation position and the process flow, and can not be installed in the dead corner of the process pipeline, cecum position.