YOKOGAWA PH402G-E-1-E PM EXA PH402 ANALYZER TRANSMITTER

Description:

The Yokogawa PH402G-E-1-E EXA pH/ORP Analyzer Transmitter is used in industrial liquid analysis systems to measure pH and oxidation-reduction potential (ORP) and convert sensor signals into standardized outputs for process control. Commonly installed in chemical plants, water treatment facilities, and industrial process environments where continuous liquid monitoring is required. Maintenance teams, OEMs, and system integrators use this analyzer for process monitoring, dosing control, and replacement of legacy EXA series instruments.

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 Range: pH -2 to 16, ORP -1500 to +1500 mV
• Input: Dual high-impedance sensor inputs (≥10¹³ Ω)
• Output Signals: Dual isolated 4–20 mA outputs + relay outputs
• Control Capability: Built-in PI control (mA and relay outputs)
• Power Supply: 100–240 VAC, 50/60 Hz
• Power Consumption: ~10 VA
• Temperature Compensation: Automatic + process compensation
• Communication: RS-485 digital communication supported
• Display: LCD with diagnostic and calibration interface
• Enclosure: IP65 / NEMA 4X industrial housing
• Diagnostics: Advanced sensor diagnostics (impedance, stability, response)
• Mounting: Panel, wall, or pipe mount
• Product Status: Discontinued legacy analyzer

Common Replacements:

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