Product Overview

The 124534-01 is a specialized Custom Proximitor assembly within the Bently Nevada proximity transducer line. This module acts as a sophisticated signal conditioner that works in conjunction with a proximity probe and extension cable to measure static and dynamic distances between the probe tip and a rotating shaft. By generating a radio frequency signal, the unit detects changes in eddy currents to provide high-precision displacement data. As a "Custom" variant, this model is factory-calibrated to specific electrical or physical parameters that deviate from standard 3300 XL configurations, ensuring accurate performance in unique machinery monitoring environments where standard scaling factors may not be applicable.

Electro-Mechanical Specifications and Dimensions

• Operating Power: -24VDC (nominal)

• Scale Factor/Sensitivity: 200 mV/mil (7.87 V/mm)

• Linear Measurement Range: 10 to 90 mils (0.25 to 2.30 mm)

• Output Signal: Negative voltage proportional to probe-to-target gap

• Hardware Weight: 0.25 kg (0.55 lbs)

• Physical Footprint: 81.3 mm x 61.2 mm x 45.2 mm (3.20 in x 2.41 in x 1.78 in)

• Mounting Options: Supports 35mm DIN rail or four-hole panel mounting

• Material Construction: High-strength polyphenylene sulfide (PPS) and corrosion-resistant alloys

• Environmental Rating: Designed for hazardous area installations when used with appropriate barriers

Industrial Deployment and Field Utility

This Custom Proximitor is a vital component in the protection of critical rotating assets across the oil and gas, power generation, and water treatment sectors. It is specifically utilized to track shaft vibration and axial thrust position in centrifugal compressors, steam turbines, and large industrial motors. By providing a clean, linear signal to a Bently Nevada 3500 series rack or a DCS, it enables the early detection of bearing degradation, misalignment, and shaft bow. Its rugged design ensures long-term stability in high-temperature and oily environments, making it a cornerstone for reliability-centered maintenance (RCM) programs where unexpected downtime must be avoided.

FAQ

Q: What distinguishes a "Custom" Proximitor like the 124534-01 from standard models?

A: Custom Proximitors are typically calibrated for non-standard target materials (other than 4140 steel) or specifically tuned for unique probe/cable length combinations to maintain accuracy in specialized installations.

Q: Is this module hot-swappable within a monitoring system?

A: While the Proximitor itself is a field-mounted component, it can be disconnected and replaced without powering down the entire 3500 monitoring rack, though caution should be exercised to avoid false trips during maintenance.

Q: How do I verify the calibration of the 124534-01 in the field?

A: Field verification is performed using a spindle micrometer and a calibrated voltmeter to check the output voltage at various gap increments within the 10 to 90 mil linear range.

Q: Can this unit be mounted directly on the machine casing?

A: Yes, the Proximitor can be mounted on the machine, but it is highly recommended to house it within a weather-protected and vibration-isolated enclosure to extend its operational lifespan.

Q: Does the 124534-01 include the proximity probe and extension cable?

A: No, this part number represents the Proximitor module only. The proximity probe and extension cable must be matched and ordered separately to form a complete transducer system.