Cable type, pole type, coaxial sleeve

Rod Probes

• Mainly divided into sizes of 8mm and 12mm.
• The thicker the probe, the larger the range and the more sturdy it is.
• More severe working conditions require thicker probes.
• Coarse probes are less likely to swing and the hanging material is more likely to fall off.
• Can be used in mixing conditions.
• Summary: Working condition is directly proportional to the size of the measuring rod, with 8mm being the most common.

Cable Probes

• Most obvious part is the tail.
• Several types:
  • With heavy hammer: To straighten the cable and ensure accurate measurement, suitable for liquid measurement.
  • With centering hammer: Used in foam, slurry and dust environments to keep the probe centered and prevent material hanging.
  • Without counterweight: Used for lightweight media or places with limited installation space, and is generally rarely used.
• Cable types: 2mm and 4mm.

Coaxial Sleeve

• Consists of two coaxial metal tubes inside and outside, with the measurement area in the middle.
• Generally used for guided wave radar to guide electromagnetic wave propagation along the casing.
• Eliminates interference in the tank (e.g., agitator, foam, steam) to ensure measurement stability.
• Various diameter options, generally above 20mm.
• Two types of hole types: single hole and multi hole. The larger the hole, the better the medium circulation and the less likely it is to hang materials.

Top Centering Rod

• A short rod or bracket installed at the top of the probe (near the flange/connection).
• Function:
  • "Support" the probe at the center of the connection.
  • Prevent the probe from tilting or sticking to the wall inside the pipe.
  • Avoid interference caused by radar waves hitting the pipe wall.
  • Reduce probe oscillation caused by medium flow or stirring.
  • Improve measurement stability.
  • Prevent the probe from shaking when the instrument is installed on the short pipe and short section.