ABB K-TEK AT100 Magnetostrictive Level Transmitter

Overview: Precision Level Measurement Without Recalibration

The ABB K-TEK AT100 is a high-accuracy magnetostrictive level transmitter designed for continuous liquid level and interface level measurement, providing an analog and/or digital signal for monitoring or control. Built around a patented sensor technology, the AT100 delivers level sensing resolution more than 100 times greater than a conventional reed switch type device, and is a direct-insertion, wetted transmitter suitable for almost any liquid level application, including interface measurement, compressor level, and separator level duties.

As an authorized supplier of ABB process instrumentation, Seven Star LLC sources and supplies the K-TEK AT100 level transmitter to refineries, gas processing plants, and petrochemical facilities across Oman and the wider GCC. Because the AT100 is engineered for high accuracy with no routine maintenance, Seven Star LLC helps engineering teams configure the correct probe length, float type, and protocol option for their specific tank or vessel application.

Measurement Principle

The AT100 is based upon the magnetostrictive principle: the sensing tube contains a wire that is pulsed at fixed time intervals, creating a magnetic field around the wire. The interaction of this magnetic field with the magnetic float causes a torsional stress wave to be induced in the wire, which propagates along the wire at a known velocity from the position of the magnetic float toward both ends of the wire. A patented piezo-ceramic sensing element placed in the transmitter assembly converts the received mechanical torsion into an electrical return pulse.

The microprocessor-based electronics measure the elapsed time between the start and return pulses and convert this time-of-flight measurement into a position reading proportional to the level of the float, typically output as a 4 to 20 mA signal. Because the measurement relies on the precise timing of a physical wave rather than a continuously drifting analog sensor, the AT100 is a digital transmitter with no routine calibration required, delivering high accuracy and no maintenance as two of the most common reasons customers select this technology.

Engineering Design of the AT100

The AT100 supports optional ratings to 800 degrees F (427 degrees C) and 3,000 psi (207 bar), making K-TEK magnetostrictive level transmitters suitable for almost any application, from cryogenic to high-temperature process vessels. HART, Honeywell DE, and Foundation Fieldbus protocol options make the AT100 easy to connect digitally to most control systems, and re-calibration, when needed, can be performed using the module pushbuttons, a HART communicator, or a menu-driven LCD readout on units with the display option.

Explosion Proof and Intrinsically Safe approvals are available across the AT100 range, with certain option combinations (such as the F1 flexible probe or SW3 option) excluded from specific approval categories, so correct configuration selection at the ordering stage is important for hazardous-area compliance. The transmitter can also achieve SIL2 certification per IEC 61508, making it, along with the related AT200 external-mount model, one of the only magnetostrictive transmitters in the industry certified to this exacting safety standard.

Key Features

The ABB K-TEK AT100 delivers precise, low-maintenance level and interface measurement. Key characteristics include:

• Magnetostrictive sensing principle with patented piezo-ceramic sensor for high accuracy and repeatability.
• Digital transmitter design with no routine calibration required.
• Optional ratings to 800 degrees F (427 degrees C) and 3,000 psi (207 bar).
• HART, Honeywell DE, and Foundation Fieldbus protocol options for digital control system integration.
• SIL2 certification available per IEC 61508 for safety-critical level applications.
• Explosion Proof and Intrinsically Safe approval options for hazardous-area installations.
• Level sensing resolution more than 100 times greater than a conventional reed switch device.

Industrial Applications

The AT100 is deployed across refinery process vessels, gas processing separators, and petrochemical storage tanks wherever continuous, high-accuracy liquid level or interface level measurement is required, including challenging applications such as compressor level monitoring and separator interface detection. Its wide temperature and pressure rating options extend its suitability to demanding process conditions found throughout Gulf-region oil and gas infrastructure.

Seven Star LLC supports refinery instrumentation teams, gas processing operators, and petrochemical maintenance departments across Oman, Muscat, Sohar, and the broader GCC region with sourcing of ABB K-TEK level transmitters, helping projects achieve accurate, low-maintenance level measurement on their most demanding vessels.

Technical Specifications

The table below summarizes the core specifications of the ABB K-TEK AT100 Magnetostrictive Level Transmitter as supplied by Seven Star LLC.

Call To Action

Seven Star LLC supplies the ABB K-TEK AT100 magnetostrictive level transmitter with full manufacturer documentation and regional technical support. Contact our instrumentation division for a formal B2B quotation, to configure the correct probe length, float, and protocol for your vessel, or to obtain the complete technical datasheet. Seven Star LLC ensures every unit shipped across Oman and the GCC is genuine ABB/K-TEK hardware, correctly specified, and backed by local support.