Configured for non-contacting vibration and displacement measurement in TSI systems, the Bently Nevada 21000-34-05-15-29-04-02 (21000-34-05-15-29-04-02 Proximity Probe) provides direct physical monitoring of shaft position and dynamic motion relative to the machine casing.

Model Configuration Matrix

The 21000 series probe utilizes a multi-digit nomenclature to define mechanical and electrical attributes. The specified configuration corresponds to a standard 3300 series proximity transducer system, featuring specific thread dimensions, cable length, and connector options optimized for high-temperature measurement environments.

Technical Hardware Specifications

Transducer System Signal Characteristics

The probe operates as an inductive displacement transducer. It requires precise eddy-current probe scaling to ensure linear output voltage relative to target distance. During installation, the gap voltage validation (-10 VDC targets) must be verified at the monitor output or the Proximitor connector to ensure the system is operating within the linear range of the calibrated curve. Precise rotor dynamics analysis requires that the probe is mounted securely to mitigate mechanical resonance, and cable routing must be separated from high-voltage AC lines to minimize noise and maintain signal integrity.

Package Contents

• 21000-34-05-15-29-04-02 Proximity Probe

• Integrated coaxial lead with connector

• Lock nuts and mounting hardware

• Installation and calibration documentation

Installation Guidelines

• Ensure the probe tip is perpendicular to the target surface to maintain accurate measurement linearity.

• Tighten lock nuts to the specified torque to prevent vibration-induced loosening.

• Maintain a minimum clearance from surrounding metal objects to prevent erroneous gap voltage readings.

• Avoid mechanical impact on the PPS probe tip, as physical damage will alter the electrical calibration.

• Verify proper shielding termination to prevent ground loops that interfere with the low-voltage output.

Shipping and Handling

• Delivery time: 3-5 days when payment finish.

• Dispatched via DHL/FEDEX/UPS.

• All units are shipped using anti-static industrial packaging and protective cushioning for shock absorption.

Technical FAQ

• What is the primary function of the 21000 series? It is designed for measuring shaft vibration and axial position in turbomachinery.

• Is the probe compatible with 3300XL Proximitors? Compatibility depends on the specific system calibration; verify impedance matching.

• What causes gap voltage drift? Temperature fluctuations, sensor aging, or target surface oxidation can cause output shifts.

• Can this probe be used in oil-submerged applications? Yes, the stainless steel body and PPS tip are resistant to standard hydrocarbon-based lubricants.

• How is the probe grounded? The probe case is typically grounded through the mounting bracket; verify electrical continuity.

• Can I replace the cable? The cable is permanently attached to the probe; field repair is not supported.

• What is the sensitivity? Standard sensitivity for this transducer system is 200 mV/mil (7.87 V/mm).

• How to test the probe without a target? A static calibration tool or a calibrated metallic target is required to confirm output behavior.