The TS-238 professional live residual chlorine electrode has consistent voltage.Effective micro battery testing instruments have a twin platinum gold ring working electrode and a gel reference electrode .Maintaining electrode voltage allows linear current measurements for residual chlorine,chlorine dioxide,and ozone disinfectant.High voltage and other installation scenarios are possible with the electrode’s PG13.5 standard thread and durable glass exterior.It is widely used in the chemical,filling,and water sectors to monitor and sterilize drinking and process water.
★★★★★
Features
- Has stable zero point performance to ensure accurate and reliable measurement;
- Simple structure and easy to clean;
- Suitable for measuring residual chlorine, chlorine dioxide, and ozone in water.
Measuring principle
- Constant voltage electrode
The TS-238 residual chlorine electrode is a constant voltage sensor composed of two platinum electrodes and a reference electrode
A micro battery measurement system. Maintain a stable potential at the electrode measurement end during measurement, and measure different potentials
Under this potential, different and linearly good current intensities are generated.
Parameters
| Category | Specifications |
|---|---|
| Model Name | TS-238 (TS-238-5M for 5m cable version) |
| Measurement Principle | Constant voltage sensor, composed of two platinum electrodes and one reference electrode forming a micro-battery measurement system |
| Measurable Parameters | Residual Chlorine, Chlorine Dioxide (ClO₂), Ozone (O₃) |
| Measuring Range | 0-20 ppm |
| Operating Temperature | 0-60°C |
| Reference Electrode | Gel electrode with annular contact |
| Maximum Working Pressure | 2 bar (at 20℃) / 10 bar (at 20℃, optional for specific models) |
| Electrode Configuration | 2 platinum rings |
| Material | Glass |
| Electrode Dimensions | Diameter: 12mm; Length: 110mm |
| Mounting Size | PG13.5 thread |
| Cable Specifications | 3-core high-impedance low-noise shielded cable; 5m length (for TS-238-5M) |
| Recommended Installation | Flow-through installation (must be used with a flow cell) |
| Recommended Flow Rate | 30-60 L/H (to maintain stable measurement) |
| Wire Color Coding | Transparent wire, Black wire, Silver shielded wire |
Core Highlights
- Monitoring chlorine dioxide, ozone, and residual chlorine without replacing electrodes is accurate and cost-effective.
- The constant pressure method is very suitable for precise monitoring of drinking water due to its linear signal, excellent zero stability, and ≤ 1% inaccuracy.
- The electrode blocks suspended particles in the water, and the carefully protected controller prevents electromagnetic interference, making it very suitable for long-term tracking of clean water quality.
- Very flexible: can be used with most compatible instruments, can be installed in flow and water tanks, and can adapt to different needs.
Featured Applications
- Water production industry: residual chlorine/chlorine dioxide disinfection monitoring of water plants and purified water plants, in line with drinking water hygiene standards, to ensure the safety of the water quality at the factory.
- Filling industry: Ozone disinfection monitoring during the production process of beverages and bottled water to avoid disinfectant residue affecting product taste and quality.
- High pressure pipeline system: disinfection monitoring of industrial high-pressure circulating water and chemical process high-pressure pipelines, withstanding high-pressure working conditions, and stably outputting measurement data.
- Secondary water supply: residual chlorine replenishment and disinfection monitoring of secondary water supply facilities to prevent secondary pollution of water quality and ensure the safety of terminal water use.

Electrode diagram illustration

Wire stripping instructions

Attention:Flow installation: The constant voltage residual chlorine electrode must be used in conjunction with a flow channel to maintain stable flow rate, and the flow rate should be controlled at around 30-60L/H.
Daily maintenance and precautions
Maintenance points
- When installing, choose matching protective sleeves or cable connectors to ensure that the threaded interface is tightly sealed and avoid water leakage.
- The connection between the electrode wire and the electrode is not waterproof, and waterproof treatment should be done to avoid moisture affecting signal transmission.
- When stripping the wire, it is necessary to peel off the metal mesh layer, thoroughly remove the conductive black skin on the outer layer of the transparent central axis, and there should be no additional contacts in the middle.
- Avoid electrode contact with sharp objects to prevent membrane damage; The installation location should be away from strong magnetic fields and mixers to ensure stable measurement.
- Before the first use, it is necessary to connect polarization with the host and complete zero and slope calibration according to the host calibration process to improve measurement accuracy.
Safety precautions
- Every three to six months, wash the surface with clean water to get rid of anything stuck on it. This keeps the membrane’s water moving.
- Clean, seal, and store the electrode somewhere dry if you’re not going to use it for a while. The barrier won’t break down because of this.
- It is important to check the cable link and make any changes that are needed to make sure the signal gets through if the test data changes.
- Heavy acid or alkaline liquids can damage electrodes over time, so don’t leave them in them for too long.
Technical Support
Top 6 Industrial Gas Analyzers Manufacturers 2025
6 Best Industrial Gas Detector Manufacturers in the World
9 Best Portable Carbon Dioxide Detector 2025 – Complete Buying Guide
Top 7 portable combustion analyzer Tested
The TS-238 constant voltage residual chlorine electrode has become the preferred sensing equipment for disinfection monitoring in industries such as water production, filling, and chemical engineering due to its core advantages of multi-component compatibility, high voltage adaptation, and stability and reliability.
From routine drinking water disinfection to high-pressure process water monitoring, it provides continuous and stable data support for various water quality control scenarios with accurate measurement performance, convenient installation and maintenance, and extensive compatibility. Whether it’s building a new monitoring system or upgrading and replacing existing equipment, TS-238 can meet diverse needs with high cost-effectiveness.
Request a Quote
.png)






