OxyTechw² GAL Dissolved Oxygen Sensor
Galvanic Sensor for Dissolved Oxygen Monitoring

The OxyTechw² GAL Sensor has been designed to provide highly reliable Dissolved Oxygen measurements the sensor employs the traditional galvanic principle. The
rugged 100 micron, HDPE membrane has been selected to provide exceptional resistance to damage. This, combined with Oxyguard's unique electrolyte and anode material
provides long term stability of 3 years and longer without the need for sensor refurbishment or membrane replacement.
For installation in activated sludge plants (ASP's) we recommend that the sensor is installed using our specially designed mounting system, with a flexible joint
in the mounting shaft. The flexible joint moves the sensor in the process, keeping the membrane clean by reducing bio-fouling without the use of a compressor and with
the added benefit of allowing rags to fall away from the assembly. This motion is similar to that achieved by using a floating ball assembly, with the added advantage
of placing the sensor below the surface of the liquor. This means that the sensor is below the level of the floating fats and greases that accumulate at the surface
and results in the Dissolved Oxygen reading being more representative of the whole tank.

The OxyTechw² GAL provides the reliable, accurate measurement that is required to operate activated sludge plants at the optimum Dissolved Oxygen concentration, maintaining the balance between the running costs of blowers and aerators and the need to produce high quality effluent.
Applications
- Activated Sludge Control
- River Quality Monitoring
- Aquaculture
Features
- No routine membrane replacement
- Long Service Interval
- Minimal Maintenance
Technical Specification
Physical
| Dimensions | 58 mm diameter x 88 mm long |
| Weight | 0.5 kg |
| Protection Class | IP68 |
| Material of Construction | Polyoxymethylene (POM) |
| Cable Entries | Integral Cable Gland |
| Cable Type | 4 core, Polyurethane Coated |
| Cable Length | 10 metres standard, 100 metres maximum |
| Service Requirement | No routine service |
| Periodic cleaning and calibration are required at a frequency determined by the application |
Environmental Data
| Operating Temperature | 0 - 50ºC |
| Storage Temperature | -10 to 60ºC |
| Pressure Rating | 5 Bar |
| Location | Indoor |
Interface to Monitor
| Sensor Output | ModTechw², RS485 |
| Power | 12 VDC from Monitor |
Measurement Principal
| Principal of Operation | Galvanic Oxygen Partial Pressure Cell, Self Polarizing, Self Temperature Compensating |
| Iron /Silver Electrode Combination | |
| Temperature Measurements | NTC |
Measurement Characteristics
| Accuracy | +/- 0.1 mg/l or +/- 1% SAT |
| Repeatability | Better than +/- 1% FSD on real sample |
| Response Time | 90% of step change in less than 90 seconds |
| Flowrate | 1 cm/second |
| Range | 0-20.00 mg/l or ppm |
| 0-200 %SAT |

Download OxyTechw² GAL Specification
Download Mounting Shaft Datasheet
Download Mounting Shaft Datasheet
Download Bracket Datasheet
Download Extension Bracket Datasheet
Download EasyCal Datasheet

Share