winter protection of instruments

In winter, the instruments and meters need to be fully protected. The following are the precautions: 1. Type selection measures Select instruments with thermal insulation devices. The differential pressure transmitter puts forward the thermal insulation and antifreeze requirements of the instrument according to the type of use of the instrument and the geographical location to be installed, and then submits it to the manufacturer for processing. 2. Thermal insulation measures Use thermal insulation materials to keep warm, that is, use thermal insulation materials to wrap the parts of the instrument that are easy to freeze or are afraid of freezing. When winter comes, it is necessary to check and discharge frequently to prevent damage to the thermal insulation materials of the packaging. 3. Heat tracing measures 1. Steam tracing measures That is, the use of pipe steam heating to keep warm. Check whether the steam insulation pipeline is unblocked or blocked before supplying steam with insulation in winter. The best steam is 24 hours a day, not too hot, and sometimes it is necessary to adjust the amount of heat preservation steam according to the change of weather temperature, so as to prevent the temperature from being too high and causing the transmission pressure pipe to affect the work of the transmitter or the transmission due to too low temperature. The freezing in the pressure pipe of the transmitter will affect the smooth operation of the transmitter. 2. Measures for thermal insulation and protection box a. The electric heating tube heat-tracing thermal insulation box is composed of three parts: the box heater and the instrument bracket. Its structure is the same as that of the protection box. The structure is shown in the figure. The electric heating device is composed of an electric heating tube and a temperature controller. There is a socket on the side of the box body. Through repeated work, the temperature in the box can be maintained within a certain range. b. Steam pipe heat tracing insulation box. The heating pipe is made of metal pipe into an S-shaped structure. The upper and lower parts of the box are made of welded through-board joints and welding. internal circulation to achieve the purpose of heating. c. Add another layer of thermal insulation cotton to the key instrument box, and add glue to seal the door of the incubator box and the inlet and outlet pipelines, which can achieve better thermal insulation and antifreeze effect of the instrument system.

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