Yokogawa PH402G-E-1-E PM Converter for pH ORP

Description:

The Yokogawa PH402G-E-1-E PM EXA pH/ORP Converter is a panel-mount industrial analyzer transmitter used for continuous measurement of pH and oxidation-reduction potential (ORP) in liquid processes. It converts high-impedance sensor signals into standardized outputs (4–20 mA) for integration into PLC/DCS control systems. Designed for harsh industrial environments, it combines microprocessor-based performance, diagnostics, and control capability for process automation.

Applications:

The Yokogawa PH402G-E-1-E 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 real-time measurement, alarm handling, and control outputs for chemical dosing or neutralization, ensuring process stability and compliance.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: PH402G-E-1-E
• Product Type: pH / ORP Analyzer Transmitter (EXA Series)
• Measurement: pH and ORP (Redox)
• Input: High-impedance dual sensor input (~10¹³ Ω)
• Output: Dual 4–20 mA + relay outputs
• Power Supply: 110–120 VAC, 50/60 Hz
• Power Consumption: ~10 VA
• Control: Built-in PI control (dosing/neutralization capable)
• Enclosure: IP65 / NEMA 4X (indoor/outdoor)
• Mounting: Panel (PM), wall, or pipe mount options
• Diagnostics: Sensor condition, stability, and calibration checks
• Communication: Enhanced diagnostics + optional comms
• Product Status: Discontinued legacy EXA analyzer

Common Replacements:

• Yokogawa FLXA21 pH Analyzer
• Yokogawa FLXA202 pH Analyzer
• Yokogawa PH450G Converter