Bently Nevada 31000-26-05-20-041-01-02 Proximity Probe Housing Assemblies

Performance Specifications

The 31000/32000 Proximity Probe Housing Assemblies are recommended when mounting proximity probes through the machine case and are typically used for radially mounted transducers, whether vibration or Keyphasor measurements. Use of a Proximity probe housing allows external access to the proximity probe and its extension cable, permitting gap adjustment or probe replacement without disassembly of the machine. 

Frequently Asked Questions

Q: What sensor specification is pre-installed inside the 31000-26-05-20-041-01-02 model?
A: Option 26 indicates that a 3300 XL NSv eddy current probe is pre-installed inside the protection housing, and option 05 represents a probe integral cable length of 0.5 meters (20 inches).

Q: What length of Standoff Adapter is provided by “20” in the 31000-26-05-20-041-01-02 model?
A: 20 indicates that the assembly is equipped with a 2.0-inch imperial threaded extension joint (or 20 mm in the corresponding metric standard), used to adjust the exposed height outside the machine casing.

Q: What key installation dimension is represented by “041” in 31000-26-05-20-041-01-02?
A: It represents a probe penetration depth of 4.1 inches (or 41 mm, depending on whether the assembly is manufactured in imperial or metric specifications).

Q: What interface details are defined by suffixes “01” and “02” in 31000-26-05-20-041-01-02?
A: 01 represents a cable outlet including one M25 fitting and two metal plugs; 02 represents a bottom protection housing mounting thread of 3/4-14 NPT imperial pipe thread.

Q: Can the protection housing material resist strong corrosive environments?
A: Yes, the main housing of the 31000 series is made of high-performance polyphenylene sulfide (PPS) tough thermoplastic, while other metal components are made of corrosion-resistant stainless steel, providing excellent chemical resistance and electrostatic dissipation performance.

Applicaiton

Combined Cycle Plants: External mounting on gas turbines, steam turbines, and generators for online probe gap adjustment.

Offshore Oil Drilling: PPS housing for heavy-duty machinery in marine environments with impact and corrosion resistance.

Refineries & Asphalt Plants: Protection for NSv probes on compressors in explosive and corrosive areas.

Industrial Oxygen & Air Separation Plants: Radial runout monitoring for high-speed small-shaft compressors with impact protection.

Fine Chemical Plants: Stainless steel and PPS protection boxes for cable joints in corrosive environments.

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