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Yokogawa DO402G-E-1-E
Product Introduction: A compact, microprocessor-based dissolved oxygen (DO) transmitter designed for on-line measurement of dissolved oxygen in water and aqueous solutions. It features built-in temperature, pressure, and salinity compensation, one-touch calibration, and HART communication, making it ideal for water treatment, wastewater management, and industrial process water monitoring.
Technical Specifications:
- Measurement Range: DO: 0–50 mg/L (ppm) or 0–300% saturation; Temperature: 0–50°C
Detailed content
- Accuracy: DO: ≤±0.03 mg/L + ±0.02 mA; Temperature: ±0.1°C
- Response Time: ≤10 s (T90, at 25°C)
- Calibration: One-touch air calibration (automatic pressure compensation)
- Output Signals: 4–20 mA DC (DO/Temperature), HART 7 (two-wire)
- Alarm Output: 1 × SPDT relay (E-1 suffix), 5 A/250 V AC, 5 A/30 V DC
- Power Supply: 12–42 V DC (two-wire loop-powered)
- Display: Dual LCD (DO concentration/saturation, temperature, status)
- Protection Rating: IP65 (front panel), IP67 (transmitter body)
- Operating Temperature: -10°C to 55°C
- Certifications: CE, UL, ISO 5814 compliant
Functional Features:
- Automatic temperature, pressure, and salinity compensation ensures accurate measurements in varying process conditions
- One-touch calibration simplifies maintenance and reduces downtime
- HART communication enables remote configuration, calibration, and diagnostics of the transmitter and sensor
- Built-in self-diagnostic functions monitor sensor health, membrane integrity, and loop status
- Compact design allows wall, pipe, or panel mounting in space-constrained areas
- Compatible with Yokogawa DO sensors (e.g., OX400 series) for extended application flexibility
Application Scenarios: Municipal water treatment plants, industrial wastewater treatment, food and beverage processing, pharmaceutical manufacturing, and power plant cooling water systems requiring precise dissolved oxygen measurement.
