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Explosion-proof multi-point armored thermocouple
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Explosion-proof multi-point armored thermocouple
The explosion-proof multi-point armored thermocouple is a temperature sensor specially designed for industrial environments such as petroleum, chemical, and metallurgical industries with flammable and explosive risks, where multiple temperature monitoring locations must be monitored simultaneously.
It integrates multiple armored thermocouples of different lengths into a single protective tube, connected to an explosion-proof junction box to achieve single-point drilling and multi-point temperature measurement.
Core technical parameters
Parameter items Typical values / range Notes and notes Degree number K, E, J, T, S, R, B, etc K type (nickel-chromium-nickel-silicon, 0-800°C) and E type are the most commonly used Temperature measurement range -40°C ~ +1300°C (depending on the graduation code) Type K is typically 0-800°C, while Type S/R/B is used for high temperatures Measurement points 2 points to 32 points (more customizable) Common options are 3 o'clock, 6 o'clock, and 12 o'clock Explosion-proof rating dIIBT4, dIICT5, dIICT6 CT6 has the highest rating, suitable for hydrogen and other gases Protection rating IP65 (Dust and Water Resistance) Capable of handling harsh on-site weather Thermal response time ≤ 8 seconds (τ0.5) Response speed is affected by the armor diameter The outer diameter of the armor Φ3mm ~ Φ8mm The finer the piece, the faster the response, but the lower the strength Installation method Fixing threads, fixing flanges, movable flanges Interface compatibility with the device is required Protective tube material 304, 316L, Inconel600, corundum tubes Selected based on the corrosiveness of the medium and temperature Core advantages
Explosion-proof safety: The junction box uses an explosion-proof structure that can withstand internal explosions without transmission and ensures on-site safety.
Investment savings: A single multi-point thermocouple can ｒｅｐｌａｃｅ multiple single-point products, requiring only one mounting port on the equipment, significantly reducing costs and construction volume.
Robust and durable: Equipped with armored structure and spring-type temperature sensing elements, it is pressure-resistant, shock-resistant, and impact-resistant, with a long service life.
Precise and stable: Capable of directly measuring the temperature of liquids, steam, gas media, and solid surfaces at the production site, with reliable data.
Typical application scenarios
This product is commonly used in situations where gradient monitoring of temperatures inside towers or reactors at different heights or depths is required:
Petrochemicals: Measurement of internal temperature distribution in distillation columns, reactors, and synthesis towers.
Fertilizer industry: Monitoring the temperature of the catalytic layer inside large fertilizer synthesis towers.
Power/Metallurgy: Temperature monitoring of boilers, pipelines, furnaces, and other high-temperature and high-pressure equipment.
Key points for model selection
When purchasing, you need to clarify the following key information to the manufacturer:
Graduation code and temperature measurement range: Confirm the maximum temperature, which is the basis for selecting the thermocouple type.
Number of measurement points and depth at each point: Providing the precise depth of each temperature measurement point from the mounting flange is the core of customization.
Explosion-proof and protection ratings: Specified requirements according to explosion-proof zones, such as Ex d IICT6.
Process connection specifications: Confirm whether it is a flange or thread, and provide the standard, pressure rating, and dimensions.
Protective tube material: Selected according to the corrosiveness and temperature of the medium, conventional options include 304 or 316L.
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