Bently Nevada | 21000-16-10-15-256-03-02 | Housing Assembly

Bently Nevada 21000 Proximity Probe Housing – Industrial-Grade Sensor Solution

What Makes This Stand Out?

Factory-fresh, explosion-proof proximity probe housing designed for hazardous environments. Built with aluminum + 304 stainless steel, it includes key components like a dome cover, conduit ports, and reverse-mount probes—fully compliant with API 670 and CSA standards.

Model Breakdown: 21000-16-10-15-256-03-02

Each suffix code tells a story – here’s what yours means:

16: 3300 XL 8 mm probe (with connector)
10: 1.0 m (39 in) probe cable length
15: 1.5-inch standoff adapter
256: 25.6-inch probe penetration (long-reach design)
03: Includes 3/4-14 NPT plug, 3/4-14→1/2-14 NPT reducer, and multi-size cable seal grip (fits 1/8–3/8 in cables)
02: 3/4-14 NPT mounting thread (default when standoff ≠ 00)

Key Specs at a Glance

Brand: Bently Nevada (trusted industrial sensor leader)
Material: Aluminum body + 304 stainless steel sleeve (durable, corrosion-resistant)
Weight: ~1.1 kg (without extra fittings)
Max (C+D) with visible probe: 17.0 in (43.18 cm)
Max (C+D) total: 32.9 in (83.5 cm)

Installation Tips for Best Performance

Long Penetration Note: Your unit has 25.6-inch probe penetration (C+D = 27.1 in > 12 in) – add sleeve support near the probe to prevent resonance.
Short Penetration Fix: If using 1.0–2.0 in penetration (not your case), counter-bore machine cases to reduce side/rear view issues.
Adjustment Range: Probe penetration can be tweaked by ±0.5 in (13 mm).

Works With & Where

Compatible with 24701 series components for flexible setups.
Ideal for intrinsically safe applications in hazardous zones.
Meets API 670 Standard for externally mounted probe housings.

Certifications You Can Trust

CSA Explosion-Proof: North America Class 1 (Div 1/2, Groups C/D), Class 2 (Div 1/2, Groups E/F/G), Class III. Enclosure Type 4. Temp ratings: T5 (-50°C to +40°C), T4 (-50°C to +80°C).
FCC: No harmful interference; accepts all received signals.
RoHS: Compliant with 2011/65/EU Directive (eco-friendly materials).

What’s Included in the Box

Dome cover, threaded conduit ports, probe sleeve, O-rings, reverse-mount probe, thread seal, 3/4-14 NPT plug, 3/4-14→1/2-14 NPT reducer, multi-size cable seal grip, plus optional conduit fittings and standoff adapter.

Download PDF file here:21000-24701-Datasheet