24701-28-10-00-040-00-02 Proximity Probe Housing Assembly – Bently Nevada

Parameter

Specification

Model Number

24701-28-10-00-040-00-02

Brand / Series

Bently Nevada 24701 Proximity Probe Housing Assembly

Housing Material

303 stainless steel body with 304 stainless steel sleeve

Probe Option (A)

28 – 3300 XL 8mm probe with selectable hazardous area approvals

Probe Cable Length (B)

10 – 1.0 meter (39 inches)

Standoff Adapter (C)

00 – No standoff adapter (direct mount)

Probe Penetration (D)

040 – 4.0 inches (102 mm) (minimum: 1.0 in, ordered in 0.1 in increments)

Fittings Option (E)

00 – Without fittings (two plugs and two washers)

Mounting Thread (F)

02 – 3/4-14 NPT

Housing Weight

1.8 kg (4.1 lb) typical without fittings

Enclosure Rating

CSA Type 4; Explosion-proof for hazardous areas

Operating Temperature

-50°C to +80°C (T4) / -50°C to +40°C (T5)

Compliance

RoHS, API 670 compliant

What does the part number 24701-28-10-00-040-00-02 represent?

This is a 24701 stainless steel housing assembly. Each segment defines a specific option:
24701: Base model – stainless steel body with 304 stainless steel sleeve
28: Probe option – 3300 XL 8mm probe with selectable hazardous area approvals
10: Probe cable length – 1.0 meter (39 inches)
00: Standoff adapter (C) – none (direct mount)
040: Probe penetration (D) – 4.0 inches (102 mm)
00: Fittings option – without fittings (two plugs and two washers supplied)

02: Mounting thread – 3/4-14 NPT

Is this housing assembly explosion-proof?

Yes. The 24701 housing, when used with appropriate explosion-proof fittings (options E:01, E:02, or E:04) and certified wiring methods, is CSA-rated as explosion-proof for Class I, Division 1 and 2 hazardous locations. This specific model (E:00) comes without fittings, allowing users to add their own certified fittings to maintain explosion-proof integrity.

What is the maximum probe penetration (C + D) for this housing with a 1.0 meter probe cable?

For a 1.0 meter probe cable length (as configured in this model), the maximum combined C + D dimension is 742 mm (29.2 inches) . Since this model has no standoff adapter (C=00), the effective penetration is 4.0 inches (102 mm), which is well within the safe operating range. If penetration exceeds 12 inches (305 mm), additional sleeve support is recommended.

What conduit fittings are required for explosion-proof installation?

For CSA-certified explosion-proof installation, you must use fittings that maintain the explosion-proof integrity of the enclosure. Options include:
E:01 – One 3/4-14 NPT explosion-proof fitting + one plug
E:02 – Two 3/4-14 NPT explosion-proof fittings
E:04 – One 3/4-14 NPT plug only (for installations using sealed conduit)
This model (E:00) is supplied without fittings and requires the user to provide appropriate certified fittings.

Can I use this housing with 3300 XL NSv or 3300 XL 11mm probes?

Yes. The 24701 housing accepts various probe types. Option A:26, 27, 31, 32 are for 3300 XL NSv probes; options A:29, 30, 35, 36 are for 3300 XL 11mm probes. This model uses option “28” which specifies a 3300 XL 8mm probe with selectable approvals.