YOKOGAWA AKB331-M07/HF

Description

Product Description

Product Parameters

• Device type: Analog input module for YOKOGAWA CENTUM VP systems (high-temperature version)
• Number of inputs: 4 (4–20 mA current, isolated)
• Resolution: 16 bits
• Measurement error: ±0.1% of full range
• Conversion time: ≤100 ms per channel
• Operating temperature range: -20–85°C
• Protection class: IP65
• Operating voltage: 24 V DC (20–28 V)
• Current consumption: ≤250 mA
• Housing material: Heat-resistant aluminum alloy with anti-corrosive coating
• Dimensions: 120 mm × 100 mm × 80 mm
• Weight: Approximately 450 g
• Certifications: CE, ATEX, IECEx, RoHS
• Warranty period: 5 years

Advantages and Features

• High-temperature resistance: YOKOGAWA AKB331-M07/HF operates at temperatures up to 85°C, making it ideal for metallurgical furnaces, high-temperature reactors, and oil refining facilities with intense heat exposure.
• Enhanced protection: IP65 rating and ATEX/IECEx certifications ensure reliability in aggressive environments (moisture, dust, explosive gases), critical for safe operations.
• Isolated inputs: Protection against overloads and interference prevents system failures, even with individual sensor damage, maintaining data integrity.
• Efficient heat dissipation: Heat-resistant housing design ensures stable operation during prolonged high-temperature cycles.

Application Examples

• Metallurgical plants: In steel smelting furnaces, YOKOGAWA AKB331-M07/HF measures molten metal temperature via 4–20 mA sensors, maintaining accuracy at ambient temperatures up to 80°C.
• Oil and gas wells: In deep pipeline pressure monitoring systems, the module operates under high humidity and temperature fluctuations (-10–85°C).
• High-temperature chemical reactors: In polymer synthesis processes, YOKOGAWA AKB331-M07/HF stably processes signals from reaction temperature sensors.
• Thermal power plants: In fuel-burning boilers, the module monitors water levels and steam pressure, withstanding elevated temperatures near heating elements.

Comparison with Competitors

Selection Recommendations

• For high-temperature processes with a small number of sensors: YOKOGAWA AKB331-M07/HF is recommended for metallurgy, oil refining, and chemical industries where temperatures exceed 70°C and 4 inputs are sufficient.
• In aggressive environments: IP65 rating and ATEX/IECEx certifications are crucial for dusty, humid, or explosive gas zones.
• In CENTUM VP systems: The module integrates seamlessly with YOKOGAWA controllers, ensuring maximum compatibility and data transmission speed.

Precautions

• Install YOKOGAWA AKB331-M07/HF using anti-static tools—static electricity can damage sensitive components.
• Avoid contact with aggressive chemicals (acids, alkalis) as they may damage the anti-corrosive housing coating.
• Regularly inspect seal conditions (every 2 months)—damage reduces IP65 protection, particularly critical in high-humidity environments.