ABB In-line, stainless steel electrodes TB264

Overview

The ABB TB264 electrode is an in-line, two-electrode contacting conductivity sensor engineered for continuous conductivity and concentration monitoring in industrial process piping. It uses a compact 25mm process connection body that threads directly into a pipeline tee or saddle fitting, making it a natural fit for retrofit installations where space around the pipe run is limited.

Built on ABB’s proven TB2 two-electrode contacting cell platform, the TB264 pairs stainless steel electrodes with a rugged, chemically resistant housing rated for elevated process temperatures and pressures. Seven Star LLC supplies the TB264 to water treatment plants, desalination facilities, chemical processors, and utilities across Oman and the wider GCC.

Operating Principle

The TB264 applies an AC voltage across its two stainless steel electrodes and measures the resulting current flow through the process liquid. Because conductivity rises with dissolved ion concentration, this current is directly proportional to the solution’s conductivity. The sensor’s specific cell constant is factory-calibrated to match the electrode geometry, allowing the paired transmitter to convert the raw signal into accurate conductivity or total dissolved solids readings across a wide measurement span.

Engineering Design of the ABB TB264

The TB264’s in-line 25mm process connection integrates the electrode pair into a compact body designed for direct pipeline mounting, eliminating the need for a separate flow chamber or bypass loop. The wetted electrodes are constructed from stainless steel for corrosion resistance across a broad range of aqueous process streams, while the housing is rated to withstand process temperatures up to 200°C and pressures up to 1379 kPa (200 psi) at that temperature — among the highest ratings in the TB2 in-line family.

Key Features

• Two-electrode contacting conductivity measurement technology
• Compact in-line design with 25mm process connection
• Stainless steel electrodes for broad chemical compatibility
• Maximum process temperature rating of 200°C
• Maximum pressure rating of 1379 kPa (200 psi) at 200°C
• Direct pipeline installation without a bypass chamber
• Compatible with ABB AquaMaster/AX400-series conductivity transmitters
• Factory-calibrated cell constant for accurate concentration readings
• Rugged construction suited to continuous industrial duty

Industrial Applications

The TB264 is well suited to continuous conductivity monitoring in water treatment and desalination plants across Muscat, Sohar, and Salalah, where operators must track feedwater quality, permeate purity, and blowdown concentration in real time. Its high-temperature, high-pressure rating also makes it applicable to boiler feedwater and cooling tower blowdown lines in power generation and petrochemical facilities.

Across the GCC’s process and utility sectors, the TB264’s in-line format simplifies installation on existing pipe runs during plant upgrades, letting engineers add conductivity monitoring points without extensive piping modifications. It is commonly specified for CIP rinse-water verification, dilution control, and general process-water quality monitoring where a robust, low-maintenance sensor is required.

Technical Specifications

Selecting the Right TB2 Sensor

The TB2 family covers several mounting styles, so start by confirming how the sensor will be installed. The TB264 is the in-line version for direct pipe mounting; insertion, dip and hot-tap versions exist for other arrangements. Check the model code on the sensor label or the existing purchase record, and confirm three points: the cell constant, which must suit the expected conductivity range; the electrode and body materials, which must suit the process chemistry; and the cable length and termination required at the transmitter. When replacing a sensor, matching the cell constant is essential, because the transmitter is configured for it.

Installation and Commissioning

Install the ABB TB264 electrode where the pipe runs full and flow is steady. Avoid high points where air collects and dead legs where solids settle. Horizontal lines are best, with the sensor mounted at the side of the pipe rather than the top or bottom. Use thread sealant compatible with the process, and do not overtighten the fitting. At the transmitter, enter the cell constant and the temperature compensation settings, then compare the reading with a calibrated portable meter or a laboratory sample to confirm the installation.

Maintenance and Troubleshooting

• Reading gradually falls: fouling or scale on the electrodes reduces the effective cell area; clean with a suitable solvent or dilute acid, then rinse well.
• Erratic or noisy value: check for air bubbles in the line, poor cable screening, or damaged connections.
• Reading wrong at high temperature: check the temperature compensation coefficient and the temperature sensor reading.
• Zero value in water: check for an open circuit in the cable or a failed connection at the transmitter.

Include the sensor in the routine calibration plan, with checks against a conductivity standard at intervals based on how quickly fouling develops in the process.

Keeping one spare sensor of the same cell constant on the shelf allows a quick exchange while the removed unit is cleaned and checked in the workshop.

Sourcing from Seven Star LLC

Seven Star LLC supplies ABB conductivity sensors and transmitters for water, desalination, power and process customers in Oman and the GCC. Send the model code, cell constant and process conditions, and our team will confirm the correct TB2 variant and cable arrangement before quotation.

Request a Quote for ABB In-line, stainless steel electrodes TB264

Contact Seven Star LLC to request a quotation for the ABB TB264 conductivity sensor or to confirm compatibility with your existing transmitter and process conditions. Our engineering team, serving Oman and the GCC, can advise on the correct TB2-family variant — in-line, insertion, submersion, or hot-tap — for your specific pipeline and application.

Browse the full ABB range or see more Liquid Analysis Sensors products supplied by Seven Star LLC in Oman and the GCC.