The 21000-28-05-00-40-03-02 is a Bently Nevada explosion-proof aluminum probe housing assembly featuring an integrated 3300 XL 8mm proximity probe with selectable hazardous area approvals. Fully compliant with API 670 standards, this unit works seamlessly with 3300 XL Proximitor Sensors and extension cables to deliver robust physical protection and stable industrial vibration monitoring in demanding external environments.
Features and benefits
• Hazardous Area Certified: CSA approved as explosion-proof for intrinsically safe applications in dangerous environments.
• CSA Type 4 Enclosure: Provides robust protection against water, dust, and harsh industrial conditions.
• API 670 Compliant: Meets American Petroleum Institute standards for externally mounted proximity probe housings.
• Flexible Conduit Options: Includes 3/4-14 NPT plug, reducer, and cable seal grip accommodating multiple cable sizes.
• Complete Assembly: Comes with dome cover, threaded ports, probe sleeve, O-rings, and reverse mount probe.
• Aluminum Construction: Lightweight yet durable all-metal housing for reliable external mounting.
System Compatibility and Alternative Models
System Compatibility
- Fully compatible with Bently Nevada 3300 XL Proximitor Sensors (e.g., 330180) and 3300 XL Extension Cables.
- Fully interchangeable with legacy non-XL 3300 8mm transducer systems in compliance with API 670 standards.
Alternative Models & Differences
- 24701-28-05-00-40-03-02: Utilizes a 303 stainless steel housing body instead of the lighter aluminum body of the 21000 series.
- 21000-16-05-00-40-03-02: Features a standard 3300 XL 8mm probe without the selectable hazardous area approval options.
- 164818 Compact Housing: Designed for space-constrained installations, whereas the 21000 series provides a full-sized rugged dome cover.
Ordering Information Table
|
Designator |
Option Code |
Description |
|
A: Probe with Connector |
28 |
3300 XL 8mm probe, selectable hazardous area approvals |
|
B: Probe Cable Length |
05 |
0.5 meter (20 inches) integrated probe cable |
|
C: Standoff Adapter |
00 |
No standoff adapter installed |
|
D: Probe Penetration |
40 |
4.0 inches overall probe penetration depth |
|
E: Fittings |
03 |
One cable seal grip with grommets (1/8" to 3/8" range) |
|
F: Mounting Thread |
02 |
3/4-14 NPT heavy-duty mounting thread |
FAQ
Q1: What is the Bently Nevada 21000-28-05-00-40-03-02?
A1: It is an aluminum proximity probe housing assembly for externally mounting 3300 XL 8 mm probes in hazardous areas.
Q2: What certifications does this housing assembly have?
A2: It has CSA approval as explosion-proof for hazardous areas and is certified as a CSA Type 4 enclosure.
Q3: What industry standard does this housing comply with?
A3: It is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted probe housings.
Q4: What conduit fittings are included with this assembly?
A4: It includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with multiple grommet sizes.
Q5: What components make up this housing assembly?
A5: It consists of a dome cover, threaded ports, probe sleeve, O-rings, reverse mount probe, thread seal, and optional fittings.
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 | |
|
Recommendation Order in increments of 0.1 in (3 mm) |
|
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 |
|
| 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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