The 21000-28-05-00-035-01-02 is a Bently Nevada 21000 all-metal external proximity-probe housing assembly. This exact code specifies 3300 XL 8 mm probe with selectable hazardous-area approvals, 0.5 m (20 in) probe cable, no standoff adapter, 3.5 in (89 mm) probe penetration, one 3/4-14 npt explosion-proof fitting and one 3/4-14 npt plug, and 3/4-14 NPT mounting thread. The assembly provides a protective externally mounted enclosure, conduit interfaces, an adjustable probe sleeve, seals, and probe-mounting geometry for rotating-machinery measurements.
- Aluminum body with 304 stainless-steel sleeve
- 1.1 kg (2.4 lb) typical without fittings
- 3300 XL 8 mm probe with selectable hazardous-area approvals
- 0.5 m (20 in) probe cable
Installed on a machine casing or bearing housing, it supports a reverse-mount proximity probe and positions the probe tip over the shaft target while protecting the probe connection and cable transition. The installed probe system measures shaft vibration or position and connects to the matched extension cable, Proximitor Sensor, and monitoring channel. For dependable operation, follow the official system-matching, mounting, wiring, environmental, and approval instructions.
Important Notice: The 21000 housing positions and protects a probe; measurement performance depends on the complete matched probe, extension cable, Proximitor Sensor, target, mounting, and monitoring channel.
Apter Power 21000-28-05-00-035-01-02 Manuals and Guides
Important Notice: These are two separate Apter Power documents prepared from the official Bently Nevada source named in each document. Confirm the physical nameplate, current manufacturer documentation, and applicable installation drawing before installation or replacement.
Turbine and Compressor Casings
Provides an external access point for a shaft proximity probe.
Fluid-Film Bearings
Supports shaft-relative vibration and position measurements.
Hazardous-Area Machinery
Can support certified installations only when the exact housing, fittings, probe, nameplate, and drawing are approved.
Retrofit Probe Access
Adds an adjustable externally mounted sleeve where internal probe access is limited.
Keyphasor and Speed Locations
Supports phase-reference or speed probes when target geometry and monitoring requirements are satisfied.
API 670 Installations
The housing family is designed for externally mounted proximity-probe applications addressed by API 670.
Read and follow the official manufacturer source and applicable installation instructions before use. Verify the exact complete ordering code from the physical nameplate.
1
Verify every ordering segment against the housing nameplate and the machine drawing before machining or installation.
2
Confirm that the ordered no standoff adapter plus 3.5 in (89 mm) probe penetration places the probe within its adjustment range without side-view or rear-view interference.
3
Sleeve lengths over 304 mm (12 in) require additional support; shorter configurations still require stiffness and resonance review.
4
Seal conduit entries and the dome cover in accordance with the applicable enclosure and hazardous-area instructions.
5
Use only the reverse-mount probe, cable length, fittings, thread seal, and mounting interface defined by the official ordering code.
Videos
News
Applications
