The 24701-28-05-30-057-04-02 is a Bently Nevada proximity probe housing assembly featuring a rugged 303 stainless steel 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 hazardous area protection and stable radial vibration telemetry in harsh plant environments.
Technical Data Summary
• Housing Type: Stainless steel probe housing assembly for external proximity probe mounting.
• Probe Compatibility: Designed for 3300 XL series 8mm probes with approval options.
• Cable Length: 0.5 m (20 in) probe cable for flexible installation.
• Standoff Adapter: 3.0 in (76.2 mm) for precise probe positioning.
• Probe Penetration: 5.7 in (144.78 mm) sleeve length for deeper installations.
• Mounting Configuration: 3/4-14 NPT thread with one 3/4-14 NPT plug only.
Specific Application
- External mounting and protection for proximity probes tracking radial shaft vibration or axial position on heavy-duty industrial rotating machinery.
- Target displacement tracking inside harsh, corrosive chemical or marine process environments demanding rugged enclosure materials.
- Sensor installations in explosive gas or hazardous industrial zones requiring robust, certified containment and weather sealing.
System Compatibility and Alternative Models
- System Compatibility: Contains an integrated 3300 XL 8mm proximity probe with multiple hazardous area approvals and a 0.5-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: 21000-28-05-30-057-04-02 Proximity Probe Housing Assembly.
- Key Differences:
- Casing Material: The 24701 model relies entirely on a ruggedized 303 stainless steel main housing structure, whereas the 21000 model utilizes a lightweight aluminum body with a 304 stainless steel sleeve.
- Weight Metrics: The 24701 stainless steel assembly has a typical unmounted mass of 1.8 kg (4.1 lb), whereas the 21000 aluminum variant is notably lighter at 1.1 kg (2.4 lb).
Ordering Information
|
Component Code |
Option Parameter |
Selection Description |
Physical Specification Metric |
|
Base Model |
24701 |
Stainless Steel Proximity Probe Housing Assembly |
303 stainless steel body, 304 SS sleeve |
|
Option A |
28 |
3300 XL 8mm probe, with approval option |
High-performance eddy current tip sensor |
|
Option B |
05 |
Probe Cable Length |
0.5 meter (20 inches) integral cable |
|
Option C |
30 |
Standoff Adapter Length (Option C Dimension) |
3.0 inches (76 mm) adapter link |
|
Option D |
057 |
Probe Penetration Depth (Option D Dimension) |
5.7 inches (145 mm) sleeve length |
|
Option E |
04 |
Fittings Selection |
One 3/4-14 NPT plug only |
|
Option F |
02 |
Mounting Thread Type |
3/4-14 NPT (Machined with 5-7 full threads) |
FAQ
Q1: What is the Bently Nevada 24701-28-05-30-057-04-02?
A1: It is a stainless steel probe housing assembly for externally mounting 3300 XL series 8mm proximity probes.
Q2: What are the key specifications of this housing assembly?
A2: It features 0.5m cable, 3.0 in standoff adapter, 5.7 in probe penetration, and 3/4-14 NPT mounting thread.
Q3: What components are included in the housing assembly?
A3: It includes a dome cover, threaded conduit ports, probe sleeve, O-rings, reverse mount probe, thread seal, and optional fittings.
Q4: What probe type is compatible with this housing?
A4: It is designed for 3300 XL series 8mm probes with approval options.
Q5: What fittings are provided with this model?
A5: It includes one 3/4-14 NPT plug only for conduit connections.
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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