The WaterTechw² pH8000 Sensor has been designed to provide highly reliable pH and temperature measurements. The sensor uses a flat surfaced electrode which includes an extended reference path, these features combine to provide an extremely robust pH measurement, suitable for use in surface water, waste water and drinking water applications.
The electrode uses field proven flat surface, self-cleaning technology. The reference system is enhanced by the Extended Path Reference (ERP) design which provides a complex path to protect the reference in the presence of interacting ions such as proteins, silver and sulphides
The WaterTechw² pH8000 sensor has been designed to provide highly reliable operation across the range of drinking water and wastewater applications. The flat faced electrode included the latest innovations in double junction reference with the ERP reference path.
For installation in applications where gross fouling is anticipated 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, reducing bio-fouling and 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 liquid. In applications where fouling is not expected or where there is insufficient space alternative mounting arrangements are available.
| Physical | |
|---|---|
| Dimensions (hxwxd) | Ø60mm, 270 mm long |
| Weight | 0.95 kg |
| Protection Class | IP68 |
| Enclosure Material | PVC Body, pH Glass |
| Cable Entry | Integral Cable Gland |
| Cable Length | 10 metres standard, 100 metres maximum |
| Interface to Monitor | |
| Power Supply | 12 VDC from Monitor |
| Sensor Output | ModTechw², RS485 |
| Environmental Data | |
| Operating/Storage Temperature | 0 to 70ºC |
| Location | Indoor/Outdoor |
| Maintenance | |
| Service | Electrode Replacement Periodic cleaning is required at a frequency determined by the application. Our self cleaning shaft option is highly recommended, this eliminates manual cleaning between calibrations. |
| Calibration | The sensor is inherently stable, calibration should be carried out to suit the application. Our recommendation is every 6 months. |
| Physical | |
|---|---|
| Dimensions (hxwxd) | 235 x 310 x 155 mm |
| Weight | 0.35 kg |
| Protection Class | IP68 |
| Enclosure Material | Black Acetal Co-Polmer with Stainless Steel Mounting PLate |
| Cable Entry | Integral Cable Gland |
| Cable Length | 10 metres standard, 100 metres maximum |
| Interface to Monitor | |
| Power Supply | 12 VDC from Monitor |
| Sensor Output | ModTechw², RS485 |
| Environmental Data | |
| Operating/Storage Temperature | 0 to 70ºC |
| Location | Indoor/Outdoor |
| Maintenance | |
| Service | Electrode Replacement Periodic cleaning is required at a frequency determined by the application. Our self cleaning shaft option is highly recommended, this eliminates manual cleaning between calibrations. |
| Calibration | The sensor is inherently stable, calibration should be carried out to suit the application. Our recommendation is every 6 months. |
| Measurement Characteristics | |
|---|---|
| Principal of Operation | Combined Electrode (pH/reference) - Ag/AgCl) Double Junction ERP Reference |
| Accuracy | +/- 0.05 pH |
| Resolution | 0.01 pH |
| Display Resolution | see 7300w² Monitor |
| Range | 0 - 14 pH |
| Temperature | |
| Principle | NTC |
| Range | 0 - 50°C |
| Accuracy | +/- 0.5°C |
| Resolution | 0.01°C |
| Part Number | Description |
|---|---|
| 225936 | WaterTechw² pH8000 Flowcell Assembly includes pH Electrode and Temperature Sensor (pH Range 0-14 pH, Temperature Range: 0-50°C, Cable Length: 5 metres) |
| 224717 | WaterTechw² pH8000 Dip Assembly includes pH Electrode and Temperature Sensor (pH Range 0-14 pH, Temperature Range: 0-50°C, Cable Length: 10 metres) |
| 224718 | WaterTechw² pH8000 Dip Assembly includes pH Electrode and Temperature Sensor (pH Range 0-14 pH, Temperature Range: 0-50°C, Cable Length: 20 metres) |
| Mounting Shaft with Self Clean Option | |
| 224726 | FlexTech Shaft Assembly with Flexible Coupling (WaterTechw² pH8000/Redox8000 Sensor, 1.0 metres) |
| 224728 | FlexTech Shaft Assembly with Flexible Coupling (WaterTechw² pH8000/Redox8000 Sensor, 2.0 metres) |
| 224730 | FlexTech Shaft Assembly with Flexible Coupling (WaterTechw² pH8000/Redox8000 Sensor, 3.0 metres) |
| Mounting Shaft without Self Cleaning | |
| 224720 | FlexTech Shaft Assembly (WaterTechw² pH8000/Redox8000 Sensor, 1.0 metres) |
| 224722 | FlexTech Shaft Assembly (WaterTechw² pH8000/Redox8000 Sensor, 2.0 metres) |
| 224724 | FlexTech Shaft Assembly (WaterTechw² pH8000/Redox8000 Sensor, 3.0 metres) |
| Mounting Brackets | |
| 223980 | FlexTech Sensor Bracket (Handrail Ø40 to 60.3 mm) |
| 224567 | FlexTech Extension Bracket Assembly (500mm Long, Handrail Ø40 to 60.3 mm) |
| Replacement Electrode | |
| 224459 | WaterTechw² pH8000 Electrode (0-14 pH, TNC Connector) |
The core product in the WaterWatch² range - the 7300w² Monitor provides all the user interface and system configuration
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