Yokogawa EXA SC202 G-A-E

Description:

The Yokogawa EXA SC202G-A-E is used a 2-wire conductivity/resistivity transmitter designed for continuous liquid analysis in industrial processes. It is part of the EXA 202 series and converts sensor signals into a 4–20 mA output for integration with PLC/DCS systems. The unit includes advanced temperature compensation, diagnostics, and communication options such as HART, making it suitable for precise and stable measurement.

Applications:

The Yokogawa SC202G is used in industrial environments for continuous monitoring of conductivity or resistivity in liquid processes. It is commonly deployed in water and wastewater treatment, chemical processing, power generation (boiler and condensate monitoring), and pharmaceutical or high-purity water systems. The analyzer supports real-time measurement, alarm handling, and control outputs to maintain process quality and compliance.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: SC202G-A-E
• Product Type: Conductivity / Resistivity Transmitter (2-wire)
• Power Supply: 24 VDC loop-powered (17–40 VDC operating range)
• Output Signal: 4–20 mA (with fault signaling 3.6–21 mA)
• Measurement Range:
• Conductivity: 0.01 µS/cm to ~1999 mS/cm
• Resistivity: up to ~999 MΩ·cm
• Accuracy: ~±0.5% full scale
• Temperature Compensation:
• NaCl tables (IEC standard)
• Linear or programmable coefficients
• Matrix compensation (5×5 programmable)
• Communication: HART, PROFIBUS-PA, FOUNDATION Fieldbus options
• Display: LCD with diagnostic indicators
• Diagnostics: Sensor fault detection, event logging
• Protection Rating: IP65 / NEMA 4X
• Mounting: Panel, wall, or pipe mount

Common Replacements:

• Yokogawa FLXA21 Conductivity Analyzer
• Yokogawa FLXA202 Analyzer
• Yokogawa SC200G (earlier generation)