21000-16-05-15-034-03-02 – Bently Nevada | Proximity Probe

Bently Nevada 21000 Proximity Probe Housing Assemblies – Explosion Proof & CSA Certified

Description

Ideal for hazardous environments, the Bently Nevada 21000 Proximity Probe Housing Assemblies combine durability with safety. Designed for reliable probe mounting, these assemblies feature explosion-proof ratings and comply with API 670 standards, making them a top choice for industrial applications.

Technical Data

Brand: Bently Nevada
Model: 21000 Proximity Probe Housing Assemblies
Material: Aluminum body with 304 stainless steel sleeve
Weight: ~1.1 kg (2.4 lb) without fittings
Certified Enclosure: CSA Type 4 (dust-tight, water-resistant)

Suffix Code Breakdown

The model code follows: 21000-AA-BB-CC-DDD-EE-FF

AA: Probe Option (e.g., “16” = 3300 XL 8 mm probe)
BB: Probe Cable Length (e.g., “05” = 0.5 m / 20 in)
CC: Standoff Adapter Length (e.g., “15” = 1.5 in / 38 mm)
DDD: Probe Penetration (e.g., “034” = 3.4 in)
EE: Fittings (e.g., “03” = includes 3/4-14 NPT plug, reducer, and cable seal grip)
FF: Mounting Thread (e.g., “02” = 3/4-14 NPT; default if CC ≠ “00”)

Installation Notes

For probe penetration (CC + DDD) between 1.0-2.0 in, counterbore machine cases to reduce side/rear view effects.
If penetration exceeds 12 in (300 mm), add sleeve support near the probe to prevent resonance.
Adjustment range for DDD: ±0.5 in (13 mm).

Compatibility

Works with:

3300 XL 8 mm probes
Cable sizes: 1/8-3/16 in, 1/4-5/16 in, 5/16-3/8 in
Optional conduit fittings and standoff adapters

Certifications

CSA Explosion-Proof: Class 1 Div 1/2 (Groups C/D); Class 2 Div 1/2 (Groups E/F/G); Class III
FCC: Compliant with Part 15 (no harmful interference)
RoHS: Compliant with Directive 2011/65/EU

Package Contents

Dome cover
Threaded ports for conduit
Probe sleeve (optional length)
O-rings
Reverse mount proximity probe
Thread seal
Optional: conduit fittings, standoff adapter

Download PDF file here:21000-24701-Datasheet