0558005685 - ESAB 150 PSI Pressure Sensor 4-20mA Output

Precision Industrial Pressure Monitoring

The ESAB 0558005685 Pressure Transducer is a critical electromechanical component designed for precise gas pressure monitoring within industrial welding and plasma cutting systems. Engineered to translate physical pressure into an electrical signal, this transducer operates on a standard 0-150 PSI range, making it ideal for monitoring compressed air lines, shielding gas inputs, and internal system pressures. The unit utilizes a 4-20 mA current loop output, a preferred standard in industrial automation due to its inherent resistance to electrical noise and voltage drops over long cable runs.

In the electrically noisy environment of a fabrication shop—where high-frequency arc starts and heavy current fluctuations are common—voltage-based sensors can often deliver erratic readings. The 4-20 mA signal provided by this ESAB transducer ensures signal integrity, allowing the machine's central processing unit to receive accurate, real-time data regarding gas flow and pressure. This accuracy is vital for maintaining cut quality in plasma systems and weld integrity in automated welding cells.

This transducer is a genuine OEM replacement part, manufactured to ESAB's strict specifications for durability and calibration. It features a robust housing capable of withstanding the vibration and thermal cycling typical of heavy-duty machinery. Integration is straightforward for maintenance personnel familiar with industrial instrumentation, ensuring that downtime is minimized and equipment is restored to factory operating parameters.

Technical Reliability

The 4-20 mA standard also offers a 'live zero' capability. Unlike 0-10V sensors where 0V could mean zero pressure or a broken wire, a reading of 0 mA on this device immediately indicates a circuit fault (wire break), while 4 mA represents zero pressure. This built-in diagnostic capability is essential for safety-critical systems like plasma cutters, where loss of gas pressure without detection could lead to torch failure or overheating.