A sensing probe is a critical component in level sensors that detects and measures material levels in industrial containers and vessels.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Accuracy | ±0.5–±1.0 % of full scale | Depends on probe type and installation; capacitive and conductive types typically ±1%, ultrasonic and optical ±0.5%. |
| Output Signal | 4–20 mA HART, 0–10 V DC, RS-485 Modbus | Analog or digital; HART for remote calibration, Modbus for integration with PLC. |
| Response Time | 0.5–5 s | Time to reach 90% of final value after level change; faster for conductive, slower for ultrasonic. |
| Process Pressure | -0.1–4.0 MPa | Vacuum to 4 MPa; higher pressures require flanged or threaded process connections. |
| Measurement Range | 0.1–10 m | Range depends on probe length and material; longer probes for tall vessels. |
| Protection Rating | IP65–IP68 | IP65 for dry areas, IP68 for submersion or washdown.IEC 60529 |
| Process Temperature | -40–200 °C | Higher temperatures require ceramic or high-temp materials; PTFE limited to 150°C. |
| Probe Material | AISI 316L, PTFE, polypropylene, ceramic (Al2O3) | 316L for general, PTFE for chemical resistance, ceramic for high temp. |
| Process Connection | G1/2, G3/4, 1" NPT, DN25–DN100 flange | Threaded for small vessels, flanged for larger or high-pressure.DIN 11851, ANSI B16.5 |
| Electrical Connection | M12 connector, cable gland M20x1.5 | M12 for quick disconnect, cable gland for permanent wiring. |
| Supply Voltage | 12–36 V DC | Typical 24 V DC; lower for battery, higher for long cable runs. |
| Power Consumption | 0.5–2.5 W | Depends on output type and electronics. |
| Service Life | 5–10 years | Under normal operating conditions; corrosive media may reduce life. |
| Ingress Protection (IP) | IP65–IP68 | IP65 for dry areas, IP68 for submersion or washdown.IEC 60529 |
| Ambient temperature | -20 to 60 °C | Outside this window: Outside this range, electronics may malfunction or display errors. |
| Humidity | 0–95% RH non-condensing | Outside this window: Condensation may cause short circuits or corrosion. |
| Vibration | Up to 2 g at 10–500 Hz | Outside this window: Excessive vibration may cause false readings or mechanical fatigue. |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A device that measures and monitors the liquid level within a reagent storage tank.
A sensor that detects and monitors the integrity of seals on doors or enclosures.
This liquid level sensor is a component designed for installation in a liming vat to continuously monitor and provide feedback on the liquid level, ensuring optimal process conditions for the liming operation.
A practical evidence checklist for RFQ preparation and supplier evaluation.
CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.
Manufacturer profiles associated with Sensing Probe.
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
Capacitive probes measure dielectric constant changes and work with both conductive and non-conductive materials, while conductive probes require electrically conductive materials and detect current flow between electrodes.
Consider material properties (conductivity, viscosity, corrosiveness), process conditions (temperature, pressure), required accuracy, container dimensions, and environmental factors (explosive atmospheres, hygiene requirements).
Regular cleaning to prevent buildup, inspection for corrosion or damage, calibration checks every 6-12 months, and replacement of worn components like seals or electrodes.
Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.