Bently Nevada 21000-28-05-20-035-04-02 Proximity probe housing / assembly

FAQ

Q1: What does “28‑05‑20‑035‑04‑02” in the model number mean?
“28” = 3300 XL 8 mm probe with selectable approvals; “05” = 0.5 m cable; “20” = 2.0 in standoff adapter; “035” = 3.5 in probe penetration; “04” = single 3/4‑14 NPT plug fitting; “02” = 3/4‑14 NPT mounting thread.

Q2: Is the proximity probe and cable included in this assembly?
Yes, it is delivered as a complete assembly including the 3300 XL probe and 0.5 m cable preinstalled.

Q3: What are the dimensions and weight of the unit?
Approximately Ø50 mm in diameter and ~140 mm in overall length including the standoff; weight is about 1.1 kg (excluding external fittings).

Q4: What materials are used for the housing and sleeve?
The housing body is aluminum; the probe sleeve/support tube is made of 304 stainless steel for strength and corrosion resistance.

Q5: What temperature range can this assembly operate within?
It is rated for –51 °C to +177 °C in both operational and storage conditions.

Q6: What does the “04” fitting option indicate?
It includes a single 3/4‑14 NPT plug only, with no reducers or cable seal grip.

Q7: Can this unit be used in hazardous/explosive environments?
Yes, this series supports explosion‑proof installations when properly configured and installed, conforming to CSA and API 670 standards.

Q8: Can the standoff adapter or penetration depth be changed later?
This variant includes a 2.0 in standoff adapter. To alter standoff length or penetration depth, a different model suffix or external adapter would need to be used.