Description

The 31000-00-00-00-031-01-02 is a specialized English Proximity Probe Housing Assembly designed for secure, external machinery case mounting of proximity transducers. This specific configuration includes a 3300 XL NSv probe with connector protector (Option A: 31), without probe cable (Option B: 00), without standoff adapter (Option C: 00), 031 mm penetration (Option D: 031), one M25 fitting (Option E: 01), and M24 x 3 mounting thread (Option F: 02). This housing assembly provides robust mechanical and environmental protection for sensors used in critical machinery monitoring, such as radial vibration or Keyphasor measurements. The 31000 series is constructed from polyphenylene sulfide (PPS), a high-strength thermoplastic offering excellent corrosion resistance, complemented by corrosion-resistant stainless steel components. The design facilitates external access to the proximity probe and extension cable, allowing for gap adjustment or probe replacement without requiring the disassembly of the machine case.

Features

• Housing Material: Polyphenylene sulfide (PPS) thermoplastic with stainless steel elements
• Probe Configuration (Option A: 31): Includes 3300 XL NSv probe with connector protector
• Penetration (Option D: 031): 31 mm probe penetration depth
• Fittings (Option E: 01): One M25 fitting for cable routing
• Mounting Thread (Option F: 02): M24 x 3 thread interface
• Protection: Compliant with API 670 standards for externally mounted proximity probe housings
• Accessibility: Allows for gap adjustment and sensor replacement without machine case disassembly

Applications

• Radial vibration monitoring on rotating machinery
• Keyphasor and speed measurement applications
• Installations requiring external probe access for simplified maintenance
• Hazardous area applications (when used with appropriate I.S. barriers and transducer systems)

Ordering Information

Option	Code on This SKU	Description
Orderable Part Number	31000-00-00-00-031-01-02	31000 Proximity Probe Housing Assembly
A - Probe with Connector	31	3300 XL NSv probe with connector protector
B - Probe Cable Length	00	Probe cable not required
C - Standoff Adapter Length	00	No standoff adapter
D - Probe Penetration	031	31 mm penetration
E - Fittings	01	One M25 fitting, two plugs
F - Mounting Thread	02	M24 x 3 mounting thread

Technical Specifications

Manufacturer	Bently Nevada (Baker Hughes)
Part Number	31000-00-00-00-031-01-02
Housing Material	Polyphenylene Sulfide (PPS)
Compliance	API 670 Standard
Mounting Thread	M24 x 3
Fitting Type	M25
Operating Temperature (NSv Probe)	-34 degC to +177 degC
Storage Temperature (NSv Probe)	-51 degC to +177 degC

Installation Guidelines

• Ensure the machine casing is properly affixed to the bearing to maintain accurate relative vibration signals for radial measurements.
• The housing provides environmental and mechanical protection; it is not an explosion-proof rated housing.
• If "C" plus "D" dimensions exceed 305 mm (12 in), install additional sleeve support near the probe to prevent resonance.
• For probe penetration lengths between 25 mm and 50 mm, counter-boring the machine case may be necessary to minimize side-view or rear-view effects.
• Tighten hole plug nuts to 0.5 N-m (5 in-lbs) if unused ports are plugged.