ブランド名:
Yokogawa
モデル番号:
DO30G
The DO30G dissolved oxygen sensor is designed for water treatment applications including sewage treatment, activated sludge processes, potable water treatment, river monitoring, intake protection, and fish farming. This galvanic cell sensor offers fast response times and long-term stability, with replaceable diaphragm and cable for simplified maintenance. Integrated temperature sensor provides automatic compensation. Compatible with both floating ball and immersion fittings.
The floating ball holder minimizes process fouling with its innovative design. A brass ring facilitates membrane integrity checks and prevents algae buildup, eliminating the need for cleaning systems. Requires only periodic inspection and calibration.
Designed for tank, open vessel, and drain installations with adjustable lengths from 0.5 to 2.0 meters. Supports flange mounting and includes optional jet cleaner for applications with high solids content, extending continuous measurement periods and simplifying maintenance.
| Parameter | DO30G Specifications |
|---|---|
| Measurement Object | Dissolved oxygen concentration in water |
| Measurement Principle | Galvanic-cell method |
| Measurement Range | 0-20 ppm, 0-20 mg/L, or 0-100% saturation Configured through dissolved oxygen converter |
| Temperature Sensor | Pt1000 RTD |
| Construction Materials |
Sensor unit: Rigid PVC, Stainless steel O-ring: Nitrile rubber Membrane: Fluoro-resin (FEP) Cable: Heat-resistant flexible PVC Cable outlet: Polycarbonate resin |
| Cable Options |
Lengths: 3m, 5m, 10m, 15m, or 20m Terminal types: Pin-type, M4/M3 Ring-type, or Fork-type Specified when ordering |
| Weight | Approx. 0.3 kg + (0.12 * cable length in meters) Example: 5m cable ≈ 0.9 kg |
| Operating Conditions |
Solution Temperature: 0-40°C Flow Rate: ≥20 cm/s (recommended) Pressure: Normal: 0-30 kPa, Max: 100 kPa |
| Performance Characteristics |
Repeatability: 0.1 mg/L or 3% FS (whichever greater) Temp Compensation Error: ±3% FS (±5°C change) Response Time: ≤2 minutes (90% response) |
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