330101-00-20-50-02-00 BENTLY NEVADA Proximity Probes

Bently Nevada's 330101-00-20-50-02-00 is a 3300 XL series eddy current proximity probe. The following is a detailed analysis of the model:

Model Meaning

330101: Fixed prefix, representing the 3300 XL series 8mm eddy current probe body.

Position A "00": Indicates that the unthreaded length is 0.0 inches, that is, the probe housing has no additional threaded section, which is a standard design.

Position B "20": The total length of the probe housing is 2.0 inches (about 50.8mm).

Position C "50": The total length of the probe (including cable) is 5.0 meters (16.4 feet).

Position D "02": The connector type is a micro coaxial ClickLoc connector, with standard cable configuration.

Position E "00": Indicates standard configuration, no special customization requirements.

Product Features

Measurement principle: Based on the eddy current effect, it can measure the displacement change of the metal surface non-contactly. The linear measurement range is usually 0-2mm, the output voltage is -20V to -4V DC (typical value), and the linearity error is ≤1%, which can meet the needs of high-precision vibration and shaft displacement monitoring.

Structural material: The probe shell is made of AISI 304 stainless steel, with a protection level of IP65, and has good corrosion resistance and wear resistance. The probe tip is polyphenylene sulfide (PPS), which has good insulation and high temperature resistance. The outer layer of the cable is made of wear-resistant PVC or Teflon, and the internal coaxial shielding design can effectively resist electromagnetic interference and has a low signal transmission attenuation rate.

Temperature stability: The operating temperature range of the probe body is -30℃~+177℃, and the temperature range of the cable is -55℃~+125℃, which can adapt to various harsh industrial environments.

Application scenarios

It is mainly used for the condition monitoring of industrial rotating machinery, such as shaft system monitoring of steam turbines, compressors, fans, pumps and other equipment. It can measure radial vibration, axial displacement, rotor eccentricity, key phase and other parameters to help timely discover potential equipment failures and ensure the safe and stable operation of the equipment.

Installation precautions

During installation, it is necessary to ensure that the probe is perpendicular to the metal surface to be measured. The initial gap is generally set at about 1.0mm (midpoint of the linear range) to avoid exceeding the range of 0.2-1.8mm to prevent signal distortion.

It must be used with a 3300 series preamplifier (such as 330180-90-00) and an extension cable of the same specification. The three parts of the system (preamplifier, probe, extension cable) must have a consistent electrical length, and the total length generally does not exceed 30 meters to ensure impedance matching and signal integrity.