Overview

The Siemens Milltronics 24250641 ST-H ultrasonic transducer is a continuous level sensor engineered for liquid level measurement in chemical storage tanks, process vessels, and industrial applications. The sensor uses ultrasonic technology to detect level in a wide range of liquids and solids. Its narrow design allows the transducer to be mounted on a 2â€³ (50.8 mm) standpipe, and when mounted correctly, it is completely protected from the process and can be used in harsh, corrosive environments.

Key Features

12Â° beam angle with a measuring range of 1â€“33 feet (0.3â€“10 meters) and 44 kHz operating frequency
Integral temperature sensor automatically compensates for sound velocity variations due to temperature changes
The level transceiver measures propagation time between pulse emission and echo reception to calculate distance from transducer to material
IP68 enclosure offers protection against dust, vibration, flooding, and high temperatures
Compact design simplifies installation and maintenance
Operating temperatures rated to 163Â°F (73Â°C) for CSA/FM models and 140Â°F (60Â°C) for ATEX models

Technical Specifications

The ST-H transducer delivers consistent performance across demanding industrial duty cycles with the following characteristics:

Ultrasonic frequency: 44 kHz
Measurement range: 0.3â€“10 meters (1â€“33 feet)
Beam angle: 12Â°
Mounting: 2" (50.8 mm) standpipe
Internal temperature compensation and self-cleaning capability
IP68 ETFE enclosure
Submergence detection available

Typical Applications

The ST-H transducer is designed for measuring liquid level in chemical storage and liquid tanks. Common installations include:

Chemical storage and handling
Water and wastewater treatment
Process tanks requiring continuous monitoring
Corrosive or harsh liquid applications
Industrial level control and alarming systems

Compatibility & Replacements

Compatible With

Siemens Milltronics ultrasonic level transceivers and controllers
Industrial process automation systems requiring continuous level feedback
ATEX and CSA/FM certified control systems for hazardous environments
Standard 2" NPT standpipe installations

Replaces / Drop-In Replacement For

The Siemens Milltronics 24250641 ST-H is a direct replacement transducer element for existing ST-H ultrasonic level measurement systems. Verify compatibility with your system integrator before ordering.

Works With

Siemens Milltronics ultrasonic level control units and transceiver modules
Industrial process instrumentation platforms supporting ultrasonic measurement
Hazardous location certified control systems (ATEX, CSA, FM where applicable)
Tank monitoring and SCADA integration systems

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Siemens Milltronics 24250641 ST-H Ultrasonic Transducer Level Sensor Crystal

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