21000 Proximity Probe Housing by Bently Nevada
Product Introduction
The Bently Nevada 21000-16-05-15-114-03-02 is a high-performance proximity probe housing assembly built for demanding machinery monitoring applications. This housing accepts a 3300 XL 8 mm probe with connector and includes a 0.5 m probe cable. The configuration features a 1.5 in standoff adapter and an 11.4 in probe penetration depth. It ships with a complete fitting set, including one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with three interchangeable grommets. The mounting thread is 3/4-14 NPT.
Technical Specifications
The Bently Nevada 21000-16-05-15-114-03-02 offers outstanding technical capabilities for machinery protection systems. Its construction utilizes an aluminum body with a 304 stainless steel sleeve. This material combination provides excellent strength-to-weight ratio, with the housing weighing just 1.1 kg without fittings.
This housing fully complies with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings. It also holds CSA certification as a Type 4 enclosure. Moreover, the unit is rated explosion-proof for hazardous area installations. The North American approvals include Class 1 Divisions 1 and 2 Groups C and D, Class 2 Divisions 1 and 2 Groups E, F and G, and Class III. The circuit is non-incendive when connected per drawing 140979. Temperature ratings are T5 @ Ta = -50°C to +40°C and T4 @ Ta = -50°C to +80°C.
The housing also complies with FCC Part 15 rules and meets RoHS Directive 2011/65/EU requirements. These certifications ensure broad global acceptance.
Probe Penetration and Installation Guidelines
The 21000-16-05-15-114-03-02 provides a probe penetration length of 11.4 in. For configurations where only a small section of the probe cable remains visible, a flag label displays the probe P/N and S/N.
Several installation factors require careful attention. For probe penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may prove necessary. This reduces probe side view or rear view effects. Furthermore, when the total probe penetration length (C plus D) exceeds 300 mm (12 in), you must add sleeve support near the probe. This prevents resonance from occurring. The adjustment range of probe penetration option D is 13 mm (± 0.5 in).
Housing Components and Assembly
The 21000 Proximity Probe Housing Assembly consists of several integrated components. These include a dome cover that screws into the housing body, threaded ports for conduit connections, and a probe sleeve of optional length. The assembly also includes O-rings, a reverse mount proximity probe, a thread seal, optional conduit fittings, and an optional standoff adapter.
This model ships with a 1.5 in standoff adapter included as standard. The 0.5 m probe cable provides sufficient length for most installation scenarios. The 304 stainless steel sleeve ensures excellent corrosion resistance in harsh environments.
Compliance and Certifications
The Bently Nevada 21000-16-05-15-114-03-02 meets rigorous regulatory standards. Its CSA explosion-proof certification covers Class I, II, and III hazardous area applications. The housing is also available for intrinsically safe applications when paired with approved proximity probes.
FCC compliance ensures electromagnetic compatibility in industrial settings. RoHS certification confirms the product is free from restricted hazardous substances. These approvals reflect Bently Nevada's dedication to product quality and safety.
Packaging List
Your shipment for the 21000-16-05-15-114-03-02 includes the following items:
1 x Bently Nevada 21000 Proximity Probe Housing Assembly
1 x 3300 XL 8 mm Probe with Connector (Option 16)
1 x 0.5 m (20 in) Probe Cable (Option 05)
1 x 1.5 in Standoff Adapter (Option 15)
1 x 11.4 in Probe Penetration Assembly (Option 114)
1 x 3/4-14 NPT Plug
1 x 3/4-14 to 1/2-14 NPT Reducer
1 x Cable Seal Grip with Grommets (1/8-3/16 in, 1/4-5/16 in, 5/16-3/8 in)
1 x Thread Seal
1 x Installation Manual
Frequently Asked Questions (FAQ)
1. What is the weight of the Bently Nevada 21000-16-05-15-114-03-02?
The housing weighs 1.1 kg (2.4 lb) typically without fittings installed.
2. What hazardous area approvals does this 21000 housing carry?
It holds CSA certification for Class 1 Divisions 1 and 2 Groups C and D, Class 2 Divisions 1 and 2 Groups E, F and G, and Class III with Type 4 enclosure rating.
3. Which probe works with this housing model?
This housing is specifically designed for the 3300 XL 8 mm probe with connector, as indicated by option 16.
4. What should I do for probe penetrations longer than 12 inches?
For penetrations greater than 12 in, you must add sleeve support near the probe to prevent resonance.
5. Is this housing compliant with API 670 standards?
Yes, it is fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings.
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