Explosion proof platinum resistor

Industrial explosion-proof platinum resistance is a temperature sensor. It is widely used in industrial automation systems. Through temperature sensors, the temperature parameters of the controlled object can be converted into electrical signals, which are transmitted to display, record, and regulate instruments to detect, adjust, and control the system. In chemical plants and production sites, various flammable and explosive chemical gases and vapors are often present. Using ordinary platinum resistors is very unsafe and can easily cause environmental gas explosions. Therefore, in these situations, explosion-proof thermocouples must be used as temperature sensors. The explosion-proof platinum resistance products produced by our factory are suitable for places with explosive gas hazards in the temperature group range of d II BT4~d II CT6. The explosion-proof thermocouples produced by our factory use imported components as temperature sensing elements, and their technical performance meets the technical conditions and division table of ZBY301-85 industrial platinum electricity. At the same time, the product meets the general requirements for explosion-proof electrical equipment used in explosive environments GB3836.1-83 GB3836.2-83 standard.

Specification

Range specifications

Note: "t" represents the measured temperature value of the temperature sensing element, and the dual platinum resistance is only supplied to Class B

Thermal resistance allows current to pass through

The maximum current measured through a platinum resistor should not exceed 5mA.

Explosion proof type and level group

Explosion proof level group: D II BT4 or d II CT4; D II BT6 or d II CT6

Shell protection level: IP54

principle structure

The structure and principle of explosion-proof thermistor and assembled thermistor are basically the same, the difference is that the junction box (shell) of explosion-proof products

）In terms of design, a special explosion-proof structure is adopted, and the junction box is made of high-strength aluminum alloy die-casting, with sufficient internal space and walls

The thickness and mechanical strength, as well as the thermal stability of the rubber sealing ring, meet the national explosion-proof standards. So, when the explosive mixture inside the junction box

When an explosion occurs, its internal pressure will not damage the junction box, and the resulting heat energy cannot diffuse outward - the explosion cannot be transmitted.

Due to the use of the above-mentioned explosion-proof special structure, the product fully complies with the explosion-proof temperature range of d II BT4 to d II CT6

Within the group range, as long as users strictly follow the product usage rules, the product can achieve reliable explosion-proof effect.

Description of categories, levels, and temperature groups of electrical equipment:

Electrical equipment is divided into two categories: Class I - Electrical equipment used underground in coal mines;

Class II - Electrical Equipment for Factory Use

Explosion proof grade

The explosion-proof level of explosion-proof thermistor is rigid, and it is suitable for explosive gas mixtures with the largest safety gap divided into A B. C Level 3.

Temperature group

The temperature groups of the internal resistance of the explosion-proof tropical zone are divided into six groups, T1 to T6, according to the highest surface temperature of its exposed part.

Types and specifications of explosion-proof thermal resistors

Types and specifications of explosion-proof armored thermal resistors