1.General Introduction
Yokogawa DO70G dissolved oxygen sensor is a optical type which designed for use in water treatment plants, such as sewage treatment works and effluent activated sludge process. This optical sensor has a fast response time and good long term stability uses a phase measurement method and realizing stable measurements over a long period of time, and features replaceable sensor cap& cable for easy maintenance. A temperature sensor is incorporated for compensation. The DO70AG sensor can be used in either the PB350G/PB360G floating ball holder or in the DOX8HS submersion type holder.
2.General Specifications
Items | Description |
Object of Measurement | Concentration of oxygen dissolved in sewage and drainage (water) |
Principle of Measurement | Optical (fluorescence) measurement method |
Measurement Range | 0 to 25 mg/L |
Temperature of Measurement water | 0 to 50℃ |
Flow rate | 2 m/sec or less |
Pressure | 0 to 500kPa |
Resistance Temperature Detector (RTD) | 22k NTC |
Construction | Sensor unit: Stainless steel (316L SS) O-ring: Ethylene Propylene Rubber (EPDM) Permeable membrane: Silicone resin Cable shielding: Heat-resistant flexible PVC |
Sensor Cable | 3m, 5m, 10m, 15m, 20m |
Repeatability | 0.1 mg/L or 3% FS, whichever is greater |
Temperature Compensation Error | Within ±3% FS for a ±5℃ change in the range of 0 to 40℃ |
Response Time | Within 120 sec. (90% response)(including sensor) |
3.Model Selection
Main Code | Suffix Codes | Description | ||||
DO70G | Optical Dissolved Oxygen Sensor | |||||
Insert length | -120 | 120mm | ||||
Type | -E | Always -E | ||||
Cable length | -00N | No cable | ||||
-03E | 3m | |||||
-05E | 5m | |||||
-10E | 10m | |||||
-05D | Digital 5m | |||||
-10D | Digital 10m | |||||
-15D | Digital 15m | |||||
-20D | Digital 20m | |||||
— | -N | Always -N | ||||
Option | /S3 | Submersion type holder(stainless steel) | ||||
/PP | Submersion type holder(polypropylene) | |||||
/FPP | Float holder | |||||
/SCT | (polypropylene)Stainless steel tag plate |
4.External Dimensions
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