Sensor/Probe

The Sensor/Probe is a critical component of a Level Indicator system, serving as the primary interface with the measured medium. It converts the physical property of the material level—such as presence, pressure, capacitance, or ultrasonic echo—into an electrical signal that is transmitted to an indicator or controller for processing and display. This component is designed for use in the machinery and equipment manufacturing industry, where accurate level measurement is essential for process control and safety.

The sensor operates on a specific physical principle, which may include conductive, capacitive, ultrasonic, pressure differential, or float-based methods. It detects the interface between the material and the air or vapor space, generating a signal proportional to the level. The choice of principle depends on the application requirements, including the type of medium, process conditions, and desired accuracy.

Typical technical parameters for this sensor include a measuring range of 0–5000 mm, accuracy of ±0.5% FS, and an output signal of 4–20 mA. The supply voltage ranges from 12–36 V DC, and the electronics can operate in temperatures from -40 to 85 °C, while the process temperature range is -40 to 150 °C. The ingress protection rating is IP65–IP68, and the probe material is typically stainless steel 316L, though other materials such as PTFE, ceramic, and Hastelloy may be available. Process connections include thread sizes from G1/2 to G2, and the response time is 1–5 seconds. The weight varies from 0.5 to 2.0 kg depending on length and material.

These values are reference ranges and must be verified for the specific model and application. Standards such as IEC 60529, ASTM A240, and DIN 3852 are listed as procurement references; they do not imply certification or compliance of any particular product. Always confirm model-specific specifications and standards with the legal manufacturer or supplier before selection or installation.

The sensor operates based on a specific physical principle, such as conductive, capacitive, ultrasonic, pressure differential, or float-based detection. It detects the interface between the material and the air or vapor space, generating a signal proportional to the level. The signal is then transmitted to an indicator or controller for processing and display.