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21000-28-05-20-039-04-02

Bently Nevada 21000 Proximity Probe Housing 21000-28-05-20-039-04-02

In stock (22 units), ready to be shipped

  • Manufacturer: Bently Nevada

  • Product No.: 21000-28-05-20-039-04-02

  • Product Type: Housing Assembly

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 1100g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Description

Bently Nevada 21000 Proximity Probe Housing Assembly

Bently Nevada 21000-28-05-20-039-04-02 | Aluminum proximity probe housing assembly for externally mounting 3300 XL 8mm reverse mount probes. Provides explosion-proof enclosure for hazardous area installations. Fully compliant with API 670 Standard for industrial machinery protection.

Product Specifications

Product Number 21000-28-05-20-039-04-02
Housing Material Aluminum body with 304 stainless steel sleeve
Weight 1.1 kg (2.4 lb) typical, without fittings
Probe Penetration (Option D) 3.9 in (99.06 mm)
Cable Length (Option B) 0.5 m (20 in)
Maximum Visible Probe Dimension 13.5 in (34.3 mm)
Mounting Thread (Option F) 3/4-14 NPT
Probe Type (Option A) 3300 XL 8mm probe, selectable hazardous area approvals
Standoff Adapter (Option C) 2.0 in (50.8 mm)
Fittings (Option E) Two explosion-proof fittings

Key Features

Includes dome cover, O-rings, reverse mount proximity probe, and thread seal. Optional 2 in (50.8 mm) standoff adapter for flexible installation. Supports 3/4-14 NPT fittings with pre-installed plug. CSA Type 4 explosion-proof enclosure. Temperature rating T4 at -50°C to +80°C. RoHS compliant.

Certifications and Compliance

CSA Certification Class I/II/III Divisions 1 and 2, Groups C-G
Enclosure Rating Type 4
Temperature Rating T5 @ -50°C to +40°C, T4 @ -50°C to +80°C
Non-incendive Circuit Per drawing 140979
RoHS Directive 2011/65/EU
API Standard API 670 compliant

Ordering Code Breakdown

21000-28-05-20-039-04-02

A:28 – 3300 XL 8mm probe with selectable hazardous area approvals.
B:05 – 0.5 m (20 in) probe cable length.
C:20 – 2.0 in (50.8 mm) standoff adapter.
D:039 – 3.9 in (99.06 mm) probe penetration.
E:04 – One 3/4-14 NPT plug only.
F:02 – 3/4-14 NPT mounting thread.

Installation Notes

Mount housing using 3/4-14 NPT threads. Ensure probe penetration (C+D) does not exceed maximum dimensions per cable length. For penetration greater than 12 in (300 mm), add sleeve support (part 37948-01). Counter bore machine case for penetrations between 1.0 and 2.0 inches to reduce side view effects. Use shielded cable and observe hazardous area installation requirements per CSA drawing 140979.

Engineering Advantages

All-metal construction ensures durability in harsh industrial environments. 304 stainless steel sleeve provides corrosion resistance. CSA explosion-proof certification enables installation in Class I/II/III Division 1 and 2 hazardous areas. API 670 compliance guarantees reliable machinery protection. Compatible with 3300 XL 8mm proximity transducers for vibration and position monitoring.

FAQs

Q1: What is the maximum probe penetration for this housing?
A1: Maximum C+D dimension depends on cable length. For 0.5m cable, maximum is 13.5 in (34.3 cm). For 1.0m cable, maximum is 29.2 in (74.2 cm).

Q2: What is the difference between 21000 and 24701 housings?
A2: 21000 has aluminum body with 304SS sleeve (1.1 kg). 24701 has 303 stainless steel body with 304SS sleeve (1.8 kg). CA versions are CSA certified explosion-proof.

Q3: What probes are compatible with this housing?
A3: Compatible with 3300 XL 8mm, 3300 XL NSV, 3300 XL 11mm, and 190 series probes with selectable hazardous area approvals. Option A:28 specifically specifies 3300 XL 8mm probe.

Product Resources

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🏷️ Tags: Housing Assembly Probe Housing Assembly

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In-stock items are typically dispatched the same business day. For products not currently in stock, dispatch times may vary based on availability. International shipping is available, and shipping costs are calculated according to destination, weight, and carrier selection.

Returns are accepted within 30 days of receipt, provided items are unused and in original condition. Return shipping costs are the responsibility of the customer. Please contact us before returning any item to receive return authorization.

For more details, please review our Shipping & Return Policy.

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A
Anonymous

Received the 21000-28-05-20-039-04-02 housing completely sealed—never opened. Genuine Bently, good price, fast ship. Mounted it, probe fit snug, readings stable. Very pleased.

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