Yokogawa PH450G-A-U UM Current Converter

Description:

The Yokogawa PH450G-A-U/UM EXAxt450 Current Converter is used a 4-wire industrial pH/ORP analyzer designed for continuous liquid analysis in process control systems. It measures pH, ORP (Redox), and temperature, converting sensor signals into standard 4–20 mA outputs with HART communication for integration into PLC/DCS systems. The unit features advanced diagnostics, touchscreen interface, and PID control capability for precise process management in demanding environments.

Applications:

The Yokogawa PH450G-A-U/UM is used in industrial environments for continuous online monitoring of pH and ORP in liquid processes. It is commonly deployed in wastewater treatment, chemical processing, food and beverage production, and power generation systems. The analyzer supports measurement, alarm handling, and control outputs for chemical dosing or neutralization, ensuring process stability and compliance.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: PH450G-A-U/UM
• Product Type: pH / ORP Current Converter (4-wire, EXAxt450 Series)
• Measurement Range: pH -2 to 16, ORP -1500 to +1500 mV
• Input: Dual high-impedance inputs (≥10¹²–10¹³ Ω)
• Output Signals: Two 4–20 mA outputs + HART communication
• Relay Outputs: 4 SPDT contacts for alarms/control
• Power Supply: 100–240 VAC, 50/60 Hz
• Power Consumption: ~15 VA
• Control Capability: Full PID control via mA or relay outputs
• Temperature Compensation: Automatic with multiple sensor options
• Enclosure: IP66 / NEMA 4X industrial housing
• Interface: Touchscreen HMI with multilingual support
• Mounting: Panel, wall, or pipe (UM = universal mounting kit)
• Function: Continuous liquid analysis + control + diagnostics
• Product Status: Discontinued legacy analyzer

Common Replacements:

• Yokogawa FLXA21 pH Analyzer
• Yokogawa FLXA202 pH Analyzer
• Yokogawa FLXA402 Analyzer