The 21000-16-10-00-120-04-02 is a Bently Nevada proximity probe housing assembly featuring a lightweight copper-free aluminum body and an integrated 3300 XL 8mm probe. Fully compliant with API 670 standards, this unit works seamlessly with standard industrial machinery monitoring platforms to deliver certified explosion-proof containment and stable radial vibration telemetry in harsh plant environments.
Features and benefits
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Durable aluminum housing – Provides strong mechanical protection for externally mounted proximity probes.
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Explosion-proof design – Suitable for hazardous industrial environments.
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CSA certified enclosure – Meets CSA Type 4 standards for reliable environmental protection.
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Flexible installation – Includes threaded conduit ports for secure cable routing.
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Complete sealing system – O-rings and thread seals help prevent dust and moisture ingress.
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API 670 compliant – Designed to meet industry standards for machinery condition monitoring systems.
Specific Application
- External mounting and explosion-proof containment for proximity probes tracking radial shaft vibration on hazardous rotating machinery.
- Target displacement tracking where long-sleeve penetrations up to 12 inches are required without structural counter-boring.
- Protection of internal sensor elements and cabling connection points in hazardous environments demanding CSA Type 4 rated housing certifications.
System Compatibility and Alternative Models
- System Compatibility: Contains an integrated 3300 XL 8mm reverse-mount proximity probe with a 1.0-meter cable length. It interfaces directly with Bently Nevada 3300 XL Proximitor Sensors, 3300 XL Extension Cables, and machinery protection architectures like the 3500 rack system.
- Alternative Model: 24701-16-10-00-120-04-02 Proximity Probe Housing Assembly.
- Key Differences:
Casing Material: The 21000 model utilizes a lightweight aluminum body with a 304 stainless steel sleeve, whereas the 24701 version relies entirely on a ruggedized 303 stainless steel main housing structure.
Weight Metrics: The 21000 aluminum variant features a typical unmounted mass of 1.1 kg (2.4 lb), whereas the 24701 stainless steel assembly is notably heavier at 1.8 kg (4.1 lb).
Ordering Information Summary
Aluminum Base Transducer Enclosure
- 21000: Core catalog designator for aluminum proximity probe housing assemblies featuring a dome-top cover and 304 stainless steel sleeve components.
Ordering Codes Matrix Breakdown
- A: 16: Configured with a standard 3300 XL 8mm reverse-mount proximity probe.
- B: 10: Integrated probe leading cable length engineered to 1.0 meter (39 inches).
- C: 00: No standoff adapter included in the structural layout.
- D: 120: Probe sleeve penetration length dimension set to exactly 12.0 inches.
- E: 04: Enclosure supplied with one 3/4-14 NPT conduit plug only.
- F: 02: Machine casing connection thread machined to a 3/4-14 NPT specification with 5-7 full threads.
FAQ
Q1: What is the main purpose of the 21000-16-10-00-120-04-02?
A1: It is designed to externally mount proximity probes and provide reliable protection for vibration monitoring systems in industrial machinery.
Q2: Is the Nevada 21000-16-10-00-120-04-02 suitable for hazardous areas?
A2: Yes, it is rated explosion-proof and carries CSA approvals for use in hazardous environments.
Q3: What components are included in the 21000-16-10-00-120-04-02?
A3: It typically includes a dome cover, probe sleeve, threaded conduit ports, O-rings, a reverse mount probe, and sealing components.
Q4: Does the 21000-16-10-00-120-04-02 comply with industry standards?
A4: Yes, it complies with the API 670 standard for externally mounted proximity probe housings.
Q5: Can the sleeve length of the 21000-16-10-00-120-04-02 be customized?
A5: Yes, different sleeve lengths are available, and longer sleeves may require additional support to reduce vibration.
Ordering Information
|
Model Suffix Selection |
Field Designation |
Technical Feature Field Definition |
Component Classification |
|
21000 |
Base Model Number |
Proximity Probe Housing Assembly, Explosion-Proof Aluminum Body |
Core Mechanical Housing |
|
-16 |
Option A: Probe Type |
3300 XL 8mm reverse-mount proximity probe included |
Sensor Element Integration |
|
-05 |
Option B: Cable Length |
0.5 Meter (20 inches) total integrated probe lead length |
Internal Cable Scale |
|
-20 |
Option C: Standoff |
2.0 inches (51 mm) standoff adapter length selection |
Spacer Adapter Base |
|
-065 |
Option D: Penetration |
6.5 inches (165 mm) sleeve penetration length configuration |
Structural Sleeve Component |
|
-04 |
Option E: Fittings |
One 3/4-14 NPT plug only (Conduit fittings not included) |
Cable Port Fitting Set |
|
-02 |
Option F: Mount Thread |
3/4-14 NPT casing engagement mounting thread layout |
Casing Installation Path |
Accessories
| Part Number | Description |
| 37948-01 | Probe Support / Oil Seal Recommended for sleeves longer than 305 mm (12 in) |
Individual Probe Sleeve for 21000/24701 Proximity Probe Housings
44382-AAA
| A: Measured Probe Sleeve Length | |
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Recommendation Order in increments of 0.1 in (3 mm) |
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The individual probe sleeve length does not include the distance from the end of the sleeve to the probe tip or the gap from the probe tip to the target material. If only the part number of the original housing is known, and the sleeve cannot be measured, use the following table to determine the sleeve length:
| AAA | Description |
|
Standoff adapter option from original housing (21000, CA21000, 24701, or CA24701 option C) plus Probe penetration option from original housing (21000, CA21000, 24701, or CA24701 option D) and 045 |
All housing AAA options except NSv and 11mm probes (options other than A:06, A:12, A:26, A:27, A:29, A:30, A:31, A:32, A:35, or A:36) |
|
Example Original part number 21000-16-10-15-035-03-02 AAA option for replacement sleeve (015 + 035 + 045) = 095 |
|
|
Standoff Adapter Option from original housing (21000, CA21000, 24701, or CA24701 option C) plus Probe penetration option from original housing (21000, CA21000, 24701, or CA24701 option D) and 046 |
Housing AAA options for 3300 NSv probe options (A:26, A:27, A:31, or A:32 |
|
Example Original part number 24701-31-10-15-090-03-02 AAA option for replacement sleeve (015 + 090+ 046) = 151 |
|
|
Standoff Adapter Option from original housing (21000, CA21000, 24701, or CA24701 option C) plus Probe penetration option from original housing (21000, CA21000, 24701, or CA24701 option D) and 037 |
Housing AAA options for 3300 XL 11mm probe options (A:29, A:30, A:35, or A:36) |
|
Example Original part number CA24701 -36-10-40-053- 02-02 AAA option for replacement sleeve (040 + 053+ 037) = 130 |
|
|
Standoff Adapter Option from original housing (21000, CA21000, 24701, or CA24701 option C) plus Probe penetration option from original housing (21000, CA21000, 24701, or CA24701 option D) and 039 |
Housing AAA options for 7200 Series 11mm probe options (A:06 or A:12) |
|
Example Original part number CA24701 -12-10-30-113-01 - 02 AAA option for replacement sleeve (030 + 113+ 039) = 182 |
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| Minimum Probe Sleeve Length | |
| For all probes except NSv and 11mm probes | 5.5 in (140 mm) = 055 |
| 3300 XL NSv probe | 5.5 in (142 mm) = 056 |
| 3300 XL 11mm probe | 4.7 in (119 mm) = 047 |
| Maximum Probe Sleeve Length | |
| All 0.5 meter probes except NSv and 11mm probes | 18.0 in (457 mm) = 180 |
| 3300 XL NSv 0.5 meter probe | 18.1 in (460 mm) = 181 |
| 7200-series 0.5 meter 11mm probe | 15.4 in (391 mm) = 154 |
| All 1.0 meter probes except NSv and 11mm probes | 33.7 in (856 mm) = 337 |
| 3300 XL NSv 1.0 meter probe | 33.8 in (859 mm) = 338 |
| 3300 XL 1.0 meter 11mm probe | 32.9 in (836 mm) = 329 |
| 7200 Series 1.0 meter 11mm probe | 33.1 in (841 mm) = 331 |
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