Industrial flameproof platinum resistor is a temperature sensor. Widely used in the industrial automatic control system, through the temperature sensor, the temperature parameters of the control object into electrical signals, transferred to the display, record and adjust the instrument, the system to detect, adjust and control. In chemical plants, production sites are often accompanied by a variety of flammable, explosive and other chemical gases, vapors, if the use of ordinary platinum resistance is very unsafe, easy to cause environmental gas explosion. Therefore, in these occasions must use flameproof thermocouple as a temperature sensor, the factory production of flameproof platinum resistance products are suitable for d II BT4~d II CT6 temperature group within the site with explosive gas danger, the factory production of flameproof thermocouple with the introduction of components as temperature sensing components, Its technical performance conforms to ZBY301-85 industrial platinum electrical technical conditions and index table. At the same time, the products meet the general requirements of explosion-proof electrical equipment for explosive environment GB3836.1-83, GB3836.2-83 standards.

Main technical index

Range specification

Note: "t" is the measured temperature value of the temperature sensing element, and the double platinum resistor is only available at grade B

The thermal resistance allows the measurement of current through the platinum resistance to a maximum of 5mA. Explosion-proof class: d II BT4 or d II CT4; d II BT6 or d II CT6 case protection class: IP54

The structure and principle of flameproof thermal resistance and assembled thermal resistance are basically the same. The difference is that the junction box (shell) of flameproof products adopts explosion-proof special structure in the design. The junction box is made of high strength aluminum alloy die-cast, and has enough internal space, wall thickness and mechanical strength. Therefore, when the explosive mixture inside the junction box explodes, its internal pressure will not damage the junction box, and the resulting heat energy cannot be diffused outwards -- detonation. As the product adopts the above explosion-proof special structure, the product is fully in line with the use of d II BT4 to d II CT6 explosion-proof temperature group range, as long as the user strictly abide by the product rules, the product can achieve reliable explosion-proof effect. Electrical equipment category, grade and temperature group description: electrical equipment is divided into two categories: I - coal mine underground electrical equipment; Class II - factory electrical equipment explosion-proof grade flameproof thermal resistance of the explosion-proof grade mechanical It is suitable for explosive gas mixture the maximum safety gap is divided into A, B, C three. Temperature group flameproof tropical internal resistance of the temperature group according to its exposed part of the highest surface temperature is divided into T1~T6 six groups. Types and specifications of flameproof thermal resistors

Types and specifications of flame-proof armored thermal resistors