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 2″ (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
- 12° beam angle with a measuring range of 1–33 feet (0.3–10 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 163°F (73°C) for CSA/FM models and 140°F (60°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: 0.3–10 meters (1–33 feet)
- Beam angle: 12°
- 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
