Ponton Industries

ST-H Transducer

Process Instrumentation

Ultrasonic Level Transducer  

ST-H transducers use ultrasonic technology to measure level in chemical storage and liquid tanks. The narrow design of the ST-H allows the transducer to be mounted on a 2" (50.8 mm) standpipe. When mounted correctly, it is completely protected from the process and can even be used in harsh, corrosive environments. 

ST-H Transducer

Catalog Specifications

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During operation, the ST-H ultrasonic transducer emits acoustic pulses in a narrow beam perpendicular to the transducer face. The level transceiver measures the propagation time between pulse emission and reception of the echo to calculate the distance from the transducer to the material. Variations in sound velocity due to changes in temperature within the permissible range are automatically compensated by the integral temperature sensor. 


Key Applications: chemical storage, liquid tanks


Don’t forget that the safest engineered level measurement solution includes switches for back-up, overfill, low level and dry run protection. 


  • Can be mounted on a 2" (50.8mm) standpipe

  • Immune to corrosive and harsh environments

  • Integral temperature sensor


Max. range

10 m (33 ft)

  Min. range0.3 m (1 ft)
Max. temp

73 °C (163 °F) (CSA/FM model)

60 °C (140 °F) (ATEX model)

Frequency44 kHz