The 24701-34-05-00-031-04-02 is a Bently Nevada proximity probe housing assembly featuring a rugged 303 stainless steel body and an integrated 3300 XL 8mm probe with a connector protector. Fully compliant with API 670 standards, this unit works seamlessly with standard industrial machinery monitoring platforms to deliver certified environmental protection and stable shaft vibration telemetry in heavy-duty plant environments.
Enviromental Strength
Explosion-Proof Certification: CSA-approved for hazardous areas with explosion-proof rating, ensuring safe operation in potentially explosive atmospheres .
API 670 Compliance: Fully compliant with American Petroleum Institute Standard 670 for externally mounted proximity probe housings in critical machinery .
Corrosion-Resistant Construction: 303 stainless steel body with 304 stainless steel sleeve provides exceptional durability in corrosive industrial environments .
CSA Type 4 Enclosure: Certified as Type 4 enclosure offering dust resistance and protection against water splashing from all directions .
Maintenance-Friendly Design: Enables external probe access for gap adjustment or replacement without requiring machine disassembly .
Intrinsically Safe Compatibility: Accepts hazardous area approved proximity probes for intrinsically safe applications in demanding installations .
Specific Application
- External mounting and mechanical protection of 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 reverse-mount proximity probe with a connector protector 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: 21000-34-05-00-031-04-02 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.
- 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 Summary
|
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 |
34 |
3300 XL 8mm probe with connector protector |
Selectable hazardous area approvals |
|
Option B |
05 |
Probe Cable Length |
0.5 meter (20 inches) integral cable |
|
Option C |
00 |
Standoff Adapter (Option C Dimension) |
No standoff adapter utilized |
|
Option D |
031 |
Probe Penetration (Option D Dimension) |
3.1 inches (78.7 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 are the primary construction materials of this housing assembly?
A1: The 24701 series features a 303 stainless steel housing body with a 304 stainless steel sleeve for excellent corrosion resistance in harsh environments .
Q2: What safety certifications does this housing carry?
A2: It is CSA-certified explosion-proof for hazardous areas, rated as CSA Type 4 enclosure, and fully compliant with API 670 Standard .
Q3: What probe type is used with this housing assembly?
A3: It accommodates a 3300 XL 8mm reverse mount proximity probe with selectable hazardous area approvals for intrinsically safe applications .
Q4: What components are included in the complete assembly?
A4: The assembly includes a screw-in dome cover, threaded conduit ports, probe sleeve, O-rings, reverse mount probe, thread seal, and optional fittings .
Q5: When is additional sleeve support required?
A5: Sleeve lengths exceeding 304 mm (12 inches) require additional support (part number 37948-01) to reduce vibration from unsupported long sleeves .
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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