21000-16-05-00-105-03-02 | Bently Nevada 0.5m Cable Proximity Probe Housing

Introduction to the Bently Nevada 21000-16-05-00-105-03-02

When machinery reliability demands precise vibration monitoring, the 21000-16-05-00-105-03-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, engineered for hazardous area applications. It combines an aluminum body with a 304 stainless steel sleeve for durability. The assembly includes a 3300 XL 8 mm probe with a 0.5 m (20 in) cable. Designed for external mounting, it meets API 670 standards and CSA Type 4 enclosure requirements.

Key Features and Technical Specifications

• Probe option: 16 – 3300 XL 8 mm probe with connector.
• Cable length: 05 – 0.5 m (20 in).
• Probe penetration (Option D): 105 – 10.5 in.
• Mounting thread: 02 – 3/4-14 NPT.
• Fittings: -03 – one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable sizes from 1/8 to 3/8 inches.
• Material: aluminum body with 304 stainless steel sleeve.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Maximum (C) + (D) dimension: 13.5 in (34.3 cm) with 0.5 m cable.

The housing includes a dome cover, threaded ports for conduit connections, a probe sleeve, O-rings, a reverse mount proximity probe, and a thread seal. Optional conduit fittings and standoff adapter are available.

Applications and Use Cases

Engineers choose the 21000-16-05-00-105-03-02 for critical rotating machinery monitoring. It excels in environments requiring explosion-proof ratings, such as oil and gas, petrochemical, and power generation. The assembly supports non-incendive circuits per drawing 140979. Its CSA certification covers Class 1 Divisions 1 and 2 Groups C and D, Class 2 Divisions 1 and 2 Groups E, F and G, and Class III. Temperature ratings are T5 @ Ta = -50 °C to +40 °C and T4 @ Ta = -50 °C to +80 °C. This makes it suitable for harsh industrial settings where safety is paramount.

Installation and Setup Guidance

For probe penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may be necessary to reduce side or rear view effects. If the combined probe penetration (C plus D) exceeds 300 mm (12 in), add sleeve support near the probe to prevent resonance. The adjustment range of probe penetration option D is 13 mm (± 0.5 in). Mount the housing using the 3/4-14 NPT thread. Ensure proper cable sealing with the provided grommets to maintain the explosion-proof integrity.

Maintenance and Reliability

Regular inspection of the housing and probe assembly helps ensure long-term reliability. Check O-rings and seals for wear. Verify that the cable grip and grommets remain secure. The aluminum body resists corrosion, while the stainless steel sleeve provides additional protection. Follow the manufacturer's guidelines for periodic maintenance to maximize service life.

Compatibility and Integration

The 21000-16-05-00-105-03-02 integrates with Bently Nevada monitoring systems. It is designed for use with intrinsically safe proximity probes. The housing complies with FCC Part 15 and RoHS Directive 2011/65/EU. For system integration, refer to the official documentation for wiring and configuration details.

Frequently Asked Questions

Q: What is the probe cable length for the 21000-16-05-00-105-03-02?

A: The probe cable length is 0.5 m (20 in), as indicated by the "05" suffix code.

Q: What is the probe penetration dimension for this model?

A: The probe penetration (Option D) is 10.5 in, specified by the "105" suffix code.

Q: What mounting thread does the 21000-16-05-00-105-03-02 use?

A: It uses a 3/4-14 NPT mounting thread, which is the default option when the standoff adapter is not selected.

Q: Is the 21000-16-05-00-105-03-02 suitable for hazardous areas?

A: Yes, it has CSA explosion-proof certification for Class 1 Divisions 1 and 2 Groups C and D, and other hazardous locations.

Product Support and Availability

The 21000-16-05-00-105-03-02 is available as new and original in factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. Contact Petro Auto Tech for current lifecycle status and ordering details.