PH Probe Self Cleaning
Wastewater treatment and control requires adequate continuous pH analysis to meet with individual local regulations. This gel-filled self-cleaning pH electrode enables reducing user’s maintenance frequencies and cost of time. This electrode incorporates photocatalysis effect in order to prevent the organic contaminates on the surface of the glass responsive membrane. Our patented unique technical details follows later. The effect varies depending on the water sample quality and analysis environment.
Self-cleaning Mechanism
The pH-responsive glass membrane is coated with porous TiO2 and irradiated with UV light from within the electrode. This process activates the TiO2 coating, resulting in photocatalytic hydrophilicity and the formation of a water film (hydrophilic layer) on the surface, effectively preventing the adhesion of organic contaminants.
Furthermore, the activated TiO2 facilitates the radicalization of water (H2O) and oxygen, enabling the disintegration of organic contaminants adhering to the external surface of the electrode.
More info


| Parameter | 6122S | 6122SA |
|---|---|---|
| Product Name | Gel-filled Self-cleaning pH Electrode | |
| Model | 6122S (Immersion holder / Flow-through / Drop-in holder) | 6122SA (Direct screw-in thread) |
| Measurement Range | 0 pH to 14 pH | |
| Measuring Solution Condition – Temperature | 0 °C to 40 °C | |
| Measuring Solution Condition – Pressure | 0 MPa to 0.1 MPa | |
| Measuring Solution Condition – Electrical Conductivity | ≥ 500 μS/cm | |
| Electrode Structure | GRT composite electrode | |
| Liquid Junction | Open pore | |
| Internal Reference Solution | Water-insoluble polymer gel, potassium chloride supersaturated | |
| Wetted Materials | Glass, TiO₂ | |
| Cable Length | 5 m / 10 m (other lengths on request) | |
| Terminal Connection | Square destination opening crimp terminals (4 mm): G, S, R, T, T, E, LED+, LED− | |
| Temperature Compensation Element | 1000 Ω (at 0 °C) | |
| Standard Accessories | Instruction manual Electrode packing Spacer Holder cap | Instruction manual O-ring |
| Compatible Transmitters | HP-200 / HP-300 / HP-480 series / HP-960FTP | |
| Relay Box | CT-302 | |
| Compatible Holders / Adapters | CH-101 series (Immersion type) CF-251 series (Flow-through type) NH-10 series (Drop-in type) | Direct screw-in thread adapters: S-R3/4-SUS-6122SA S-NPT3/4-SUS-6122SA |
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