21000-16-05-15-037-01-02 Probe Housing | Bently Nevada

21000-16-05-15-037-01-02 Proximity Probe Housing | Bently Nevada

Product Introduction

The Bently Nevada 21000-16-05-15-037-01-02 proximity probe housing assembly offers a lightweight yet robust solution for mounting 3300 XL 8 mm proximity probes on turbines, compressors, and pumps. This aluminum-bodied housing provides excellent corrosion resistance while significantly reducing overall weight compared to stainless steel alternatives.

This assembly includes a dome cover that screws into the main body, threaded ports for conduit connections, a probe sleeve of optional length, O-rings, a reverse mount proximity probe, a thread seal, and optional conduit fittings. The complete system ensures reliable machinery condition monitoring in demanding industrial environments.

Furthermore, the 21000-16-05-15-037-01-02 fully complies with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings. It also carries CSA Type 4 enclosure certification, making it suitable for outdoor and washdown applications.

Technical Specifications

Understanding the suffix code breakdown helps you verify the exact configuration of the 21000-16-05-15-037-01-02 model. Each segment defines a specific feature:

• AA - Probe Option (16) : Designed for a 3300 XL 8 mm probe with connector.

• BB - Probe Cable Length (05) : Includes a 0.5-meter (20-inch) probe cable.

• CC - Standoff Adapter (15) : Provides a 1.5-inch (38 mm) standoff adapter.

• DDD - Probe Penetration (037) : Delivers 307 inches of probe penetration.

• EE - Fittings Option (01) : Comes with one explosion-proof fitting and one plug .

• FF - Mounting Thread (02) : Equipped with a 3/4-14 NPT mounting thread (default when standoff adapter is not 00).

A flag label may display the probe P/N and S/N for certain combinations of C plus D options where only a small section of the probe cable remains visible. For probe penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may be necessary to reduce side view or rear view effects. Additionally, if you select a probe penetration length (C plus D) greater than 300 mm (12 inches), you must add sleeve support near the probe to prevent resonance. The adjustment range of probe penetration option D is 13 mm (± 0.5 inches).

Material Composition and Mechanical Parameters

The 21000-16-05-15-037-01-02 uses a carefully selected material combination that balances strength, weight, and corrosion resistance.

The aluminum body provides significant weight savings over all-stainless alternatives, making installation and maintenance easier. Meanwhile, the 304 stainless steel sleeve ensures durability and wear resistance at the probe interface. This combination delivers long service life even in corrosive environments.

Hazardous Area Approvals and Certifications

The 21000-16-05-15-037-01-02 carries extensive hazardous area certifications, making it suitable for use in potentially explosive atmospheres.

North American Approvals (CSA Certified) :

• Class 1, Divisions 1 and 2, Groups C and D : Suitable for environments with flammable gases or vapors.

• Class 2, Divisions 1 and 2, Groups E, F and G : Suitable for combustible dust environments.

• Class III : Suitable for ignitable fibers or flyings.

• Enclosure Type 4 : Weatherproof and corrosion-resistant.

• Temperature Codes : T5 @ Ta = -50°C to +40°C; T4 @ Ta = -50°C to +80°C.

The circuit is non-incendive when connected per drawing 140979. Additionally, the housing complies with FCC Part 15 rules and meets RoHS Directive 2011/65/EU requirements.

You can order hazardous area approved proximity probes with 21000 aluminum housings for intrinsically safe applications. This flexibility makes the 21000-16-05-15-037-01-02 a versatile choice for various industrial safety requirements.

Installation Guidelines

Proper installation of the 21000-16-05-15-037-01-02 ensures optimal measurement accuracy and long-term reliability. Follow these recommendations:

First, confirm that the mounting thread (3/4-14 NPT ) matches your application's mounting hole specifications. This thread size is standard for this housing series.

Next, verify that the probe cable length (0.5 meters ) and probe penetration depth (307 inches ) suit your machinery's dimensional requirements. The penetration depth critically affects the probe's sensing zone and signal linearity.

For penetration depths between 1.0 and 2.0 inches, consider counter boring the machine case to reduce probe side view or rear view effects. For total penetration (C plus D) exceeding 300 mm (12 inches), install sleeve support near the probe to prevent resonance issues.

When tightening components, apply appropriate torque to ensure proper sealing without damaging O-rings or threads. The dome cover should screw securely into the main body, and conduit connections should be properly sealed for explosion-proof integrity.

Packaging List

Each 21000-16-05-15-037-01-02 order includes the following items:

• 1 × Aluminum housing body with 304 stainless steel sleeve

• 1 × Dome cover

• 1 × Probe sleeve (optional length)

• 1 × Thread seal

• 1 × Reverse mount proximity probe

• 1 × 1.5-inch standoff adapter

• 1 × Explosion-proof fitting (as specified by fittings option 01)

• 1 × Plug

• 1 × O-rings set

• 1 × Installation instruction sheet

Note: The packaging does not include calibration certificates or additional warranty documentation beyond the 12-month factory warranty.

Shipping Information

All orders ship via FedEx , UPS , or DHL . We select the most suitable carrier based on your destination and delivery timeline. Tracking numbers are provided promptly after dispatch.

Frequently Asked Questions

1. Which probe works with the 21000-16-05-15-037-01-02 housing?

This housing is specifically engineered for the 3300 XL 8 mm probe . Using other probe models may compromise the sealing performance, measurement accuracy, or hazardous area certifications.

2. Is this housing suitable for hazardous area installations?

Yes. The housing carries CSA certification for explosion-proof applications in Class 1, Divisions 1 and 2, Groups C and D; Class 2, Divisions 1 and 2, Groups E, F and G; and Class III environments. It also meets Enclosure Type 4 requirements.

3. What does the 1.5-inch standoff adapter provide?

The standoff adapter (option 15) extends the probe mounting position by 1.5 inches (38 mm). This allows proper probe positioning in applications where the machine case geometry requires additional offset.

4. When is sleeve support required for this housing?

You must add sleeve support near the probe when the total probe penetration length (C plus D options) exceeds 300 mm (12 inches). This prevents mechanical resonance that could affect measurement accuracy.

5. How do I read the full model number 21000-16-05-15-037-01-02?

Each segment defines a specific configuration: probe option (16), cable length (05), standoff adapter (15), penetration depth (037), fittings (01), and mounting thread (02). The penetration depth of 037 represents 307 inches, which exceeds typical applications and may require special installation considerations.