High-protection multifunctional explosion-proof temperature measuring device and manufacturing method thereof

Abstract

The invention discloses a high-protection multifunctional explosion-proof temperature measuring device and a manufacturing method thereof. The high-protection multifunctional explosion-proof temperature measuring device comprises a shell, the top of the shell is in threaded connection with a shell cover, the bottom of the shell is provided with a wire leading-in end, the two sides of the shell are each provided with a cable leading-in end, and the bottom of the wire leading-in end is provided with a temperature measuring connecting structure; a boss is arranged in the shell, an intelligent temperature transmitter is fixedly installed on the top of the boss, and a stud is arranged on the top of the intelligent temperature transmitter. According to the invention, a four-wire system PW RTD platinum high-precision temperature sensing element, high-temperature-resistant silica gel potting, an intelligent temperature transmitter module, a stepped multi-stage sealing structure, a universal connection structure and the like are adopted; and therefore, the device has the advantages of high precision, wide range, instantaneous response, extremely small temperature drift, low failure rate, long service life, high anti-corrosion grade, high shell strength, light weight, simplicity in installation and fixation and capability of being fixed at any angle.

Description

technical field [0001] The invention belongs to the field of temperature measuring devices, in particular to a high-protection multifunctional explosion-proof temperature measuring device and a manufacturing method thereof. Background technique [0002] In existing life, the explosion-proof temperature measuring device is mainly used for real-time monitoring of the temperature of various gases, liquids, solids and other media in flammable and explosive hazardous places. According to the characteristics of the medium and process requirements, the installation position of the explosion-proof temperature measuring device is different. For example, some need to be installed at the bottom of the tank to be completely immersed in the medium, and some need to be installed on the pipeline to be exposed to the outdoors and also need to display the temperature locally. At present, the existing explosion-proof temperature measuring devices are mainly divided into two types: three-wire ...

AI Technical Summary

Problems solved by technology

At present, the existing explosion-proof temperature measuring devices are mainly divided into two types: three-wire system and four-wire system. Among them, the three-wire system only has the temperature measurement function, and the monitored temperature needs to be checked in the main control room in the background. The measurement accuracy deviation is 0.3°C, and the temperature measurement range range The temperature range is -40°C to +600°C. Since the temperature signal needs to be transmitted to the background, it is easy to be interfered and cause a large temperature drift. The applicable ambient temperature range is -20°C to +40°C; the four-wire system has a temperature display function , the measurement accuracy deviation is 0.15°C, and the temperature measurement range is -40°C to +500°C. Since the temperature is displayed on the LCD panel, the applicable ambient temperature range is only 0°C to +40°C

[0003] From the above content, it can be seen that the

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