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SKU: 330103-00-16-10-12-05

Bently Nevada 3300 XL 8mm Proximity Probe 330103-00-16-10-12-05

The Bently Nevada 330103-00-16-10-12-05 is a 3300 XL 8mm proximity probe designed for non-contact vibration and axial position sensing. This 3/8-24 UNF threaded sensor features a 1.2-meter total length and specialized signal conditioning to provide accurate displacement data for critical rotating machinery in power generation and industrial processing.

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Product Description

The Bently Nevada 330103-00-16-10-12-05 operates as a fundamental sensing element within the 3300 XL 8mm Proximity Transducer System. Because industrial stability depends on precise data, this probe utilizes eddy current technology to observe the distance between the sensor tip and a rotating shaft. This non-contact measurement method captures both static position and dynamic vibration, which allows the monitoring system to identify mechanical irregularities before they lead to catastrophic failure. Consequently, the probe serves as an essential tool for protecting high-speed turbines, compressors, and pumps.

To maintain signal integrity in demanding environments, the probe features a polyphenylene sulfide (PPS) tip that successfully resists moisture and chemical contaminants. When the conductive target moves relative to the probe, it creates a change in the electromagnetic field, which the Proximitor sensor subsequently converts into a proportional voltage signal. Furthermore, the 330103-00-16-10-12-05 configuration includes a 3/8-24 UNF thread with a specific unthreaded and case length tailored for recessed mounting applications. Because this model uses a 1.0-meter total cable length, it provides the necessary reach for standard machinery housings while maintaining a calibrated 200 mV/mil scale factor.

The probe also incorporates a gold-plated ClickLoc connector to ensure a reliable electrical interface with the extension cable. This specialized connector prevents the signal attenuation often caused by oxidation or vibration-induced loosening. Moreover, the robust mechanical design allows the sensor to function effectively across a temperature range of -51°C to +177°C. Therefore, implementing this Bently Nevada probe into a Turbine Supervisory Instrumentation (TSI) strategy significantly enhances machine longevity and operational safety.

  • Manufacturer: Bently Nevada (Baker Hughes)
  • Product Series: 3300 XL 8mm
  • Model Number: 330103-00-16-10-12-05
  • Thread Size: 3/8-24 UNF
  • Unthreaded Length: 1.6 inches
  • Overall Case Length: 1.0 inches
  • Total Length: 1.2 meters
  • Connector: Miniature coaxial ClickLoc (Gold-plated)
  • Linear Range: 2.0 mm (80 mils)
  • Operating Temperature: -51°C to +177°C
  • System Application: Vibration and Position Monitoring (TSI)
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31000-16-10-15-030-03-02 | Bently Nevada | 31000 Proximity Probe Housing

31000-16-10-15-030-03-02 | Bently Nevada | 31000 Proximity Probe Housing

Technical Overview

The Bently Nevada 31000-16-10-15-030-03-02 is a specialized proximity probe housing designed to physically protect a proximity probe and its integral cable within harsh industrial environments. Its primary function is to provide a secure, environmentally sealed mounting point on rotating machinery for acquiring critical vibration and position data. The housing is constructed from 304 Stainless Steel, offering robust protection against physical impact and corrosion. This specific configuration, 31000-16-10-15-030-03-02, features a 3/4-14 NPT external mounting thread for direct installation into a machine case. Internally, it accommodates a Bently Nevada 3300 XL 8 mm or 3300 5 mm probe, which is positioned by a 1.0-inch stinger (probe sleeve). The housing facilitates the signal path from the probe tip to the Bently Nevada 3500 Monitoring System. The probe, connected via an extension cable to a Proximitor Sensor, generates a high-frequency RF signal. The resulting eddy current field is used to measure the distance to the observed conductive target. The Proximitor Sensor conditions this signal into a calibrated DC voltage proportional to the gap, which is then transmitted to a 3500/42M Proximitor/Seismic Monitor module for analysis, alarming, and machinery protection.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number31000-16-10-15-030-03-02
Product Type31000 Proximity Probe Housing
ConditionBrand New
Warranty12 Months
Housing Material304 Stainless Steel
Mounting Thread3/4-14 NPT
Stinger (Probe Sleeve) Length1.0 inch (25.4 mm)
Probe CompatibilityBently Nevada 3300 XL 8 mm and 3300 5 mm Proximity Probes
Environmental SealingViton O-ring cable seal included
Operating Temperature Range-34 °C to +177 °C (-30 °F to +350 °F)
Hazardous Area SuitabilitySuitable for Class I, Div 2 / Zone 2 locations when installed per Bently Nevada control drawings and with appropriately certified system components.

Operational Capabilities

In Oil & Gas applications, the 31000-16-10-15-030-03-02 housing provides essential protection for transducers monitoring centrifugal and reciprocating compressors, pumps, and gearboxes. Its 304 Stainless Steel construction and Viton seals ensure long-term integrity in environments containing corrosive elements such as H2S and hydrocarbons, a critical requirement for meeting API 670 standards for machinery protection systems. In Power Generation, this housing is extensively used on steam and gas turbines, exciters, and boiler feed pumps. It maintains measurement accuracy and reliability under conditions of high temperature and vibration, which is fundamental for monitoring shaft radial vibration, axial thrust position, and differential expansion. The passive mechanical design results in a high Mean Time Between Failures (MTBF), contributing to overall plant availability. When properly installed, the housing assembly provides an environmental rating equivalent to NEMA 4X and IP65, preventing ingress of dust, moisture, and process contaminants that could otherwise compromise signal integrity

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89477-30 | Bently Nevada | Interconnect Cable

89477-30 | Bently Nevada | Interconnect Cable

Technical Overview

The Bently Nevada 89477-30 is a specialized interconnect cable engineered for the 3500 Machinery Protection System. Its primary function is to establish a high-integrity communication link between a 3500/42M Proximitor/Seismic Monitor and its corresponding rear-mounted I/O module. The cable transmits raw, unamplified dynamic vibration and axial position signals from the I/O module's input terminals to the monitor's processing circuitry. It concurrently carries the -24 Vdc power from the monitor to the I/O module, which in turn powers the connected Proximitor probes. The 89477-30 is constructed as a multi-conductor, shielded assembly to ensure high signal-to-noise ratio (SNR) and protect the low-amplitude transducer signals from electromagnetic interference (EMI) and radio-frequency interference (RFI) prevalent in industrial environments. This robust shielding is critical for the accuracy of sub-mil (micrometer) level measurements required for effective machinery diagnostics and protection. The cable's specific length and keyed connectors ensure proper installation and signal path integrity within the 3500 rack architecture.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number89477-30
Product TypeInterconnect Cable
ConditionBrand New
Warranty12 Months
Cable Length3.0 meters (9.8 feet)
Connector TypeMulti-pin, keyed D-subminiature with jackscrew locking mechanisms
System CompatibilityBently Nevada 3500/42M Proximitor/Seismic Monitor and associated I/O modules
Cable ConstructionMulti-conductor, 22 AWG, with overall foil and/or braid shielding
Operating Temperature-30°C to +65°C (-22°F to +149°F)
Signal TypeTransmits dynamic transducer signals (vibration, position) and DC power
Application EnvironmentFor internal use within 3500 system racks; not rated for field installation

Operational Capabilities

In Oil & Gas and Power Generation applications, the 89477-30 interconnect cable demonstrates high reliability essential for continuous machinery protection. Its performance is defined by its ability to maintain signal integrity in environments with significant electrical noise and mechanical vibration. The cable's robust construction, featuring secure locking connectors and comprehensive shielding, prevents signal degradation and intermittent connections, which are potential sources of false trips or missed alarms in a protection system. The specified operating temperature range of -30°C to +65°C ensures stable performance within control cabinets and rack rooms that experience thermal cycling. The reliability of the 89477-30 is a critical factor in the overall safety integrity level (SIL) rating of the 3500 system, as it provides the foundational data link for detecting incipient faults such as bearing wear, imbalance, and shaft cracks in critical rotating assets.

Applications

  • Power generation turbines and generators
  • Oil & gas compressors and pumps
  • Industrial rotating machinery monitoring
  • Predictive maintenance systems
  • Process automation

Technical FAQ

Q: What systems is the 89477-30 compatible with?
A: The 89477-30 interconnect cable is designed exclusively for the Bently Nevada 3500 Machinery Protection System. It specifically facilitates the connection between a 3500/42M Proximitor/Seismic Monitor and its corresponding I/O module (e.g., 3500/42M I/O with Internal Terminations). It is not designed or validated for use with other Bently Nevada system series (such as 3300) or any third-party monitoring equipment.

Q: What are the installation requirements?
A: Installation must be performed by a qualified instrumentation technician familiar with the 3500 system. The cable is to be routed within the 3500 rack, ensuring it is not pinched, kinked, or subjected to tension. Adhere to a minimum bend radius of 10 times the cable's outer diameter. The keyed connectors prevent incorrect mating; do not apply force if resistance is met. After seating the connectors, fully tighten the jackscrews to prevent disconnection from cabinet vibration. Route the 89477-30 cable away from high-voltage AC power wiring to further mitigate any risk of noise induction.

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21000-34-10-20-058-04-02 | Bently Nevada | Proximity Probe HousingAssemblies

21000-34-10-20-058-04-02 | Bently Nevada | Proximity Probe HousingAssemblies

Technical Overview

The Bently Nevada 21000-34-10-20-058-04-02 is a rigid proximity probe housing assembly designed for the external mounting of proximity probes on machinery casings. Its primary function is to provide a secure, environmentally sealed, and mechanically protected housing for a non-contacting eddy current proximity probe. This specific assembly, constructed from 304 Stainless Steel, ensures robust performance in corrosive industrial environments. It positions a 3300 XL 8 mm probe at a fixed distance from the mounting surface, defined by its 3.4-inch standoff dimension. When integrated into a Bently Nevada 3500 Machinery Protection System, the probe within the 21000-34-10-20-058-04-02 housing measures shaft vibration and position. The probe transmits a high-frequency RF signal, which is modulated by the gap to the conductive target. This signal is then demodulated by a Proximitor sensor, producing a DC voltage proportional to the gap. This voltage is processed by a 3500 monitor module (e.g., 3500/42M) to provide critical data for machinery diagnostics and protection, such as radial vibration, axial thrust position, and speed.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number21000-34-10-20-058-04-02
Product TypeProximity Probe Housing Assembly
ConditionBrand New
Warranty12 Months
Material of Construction304 Stainless Steel
Mounting Thread Option3/4 - 14 NPT
Standoff Adapter Dimension (A)3.4 in (86 mm)
Housing Length (C)5.8 in (147 mm)
Included Probe3300 XL 8 mm Proximity Probe
Probe Cable Length (B)2.0 m (6.6 ft)
Operating Temperature Range-34 °C to +177 °C (-29 °F to +350 °F), limited by probe/cable specifications

Operational Capabilities

In Oil & Gas and Power Generation applications, the 21000-34-10-20-058-04-02 housing assembly demonstrates high reliability in demanding operational conditions. Its 304 Stainless Steel construction provides excellent resistance to corrosion from process fluids, steam, and harsh atmospheric contaminants common in these industries. The rigid design ensures the probe's measurement gap remains stable, preventing measurement drift and false alarms, which is critical for the protection of high-speed turbomachinery. The 3/4 - 14 NPT mounting thread, when installed correctly with appropriate sealant, provides a secure, pressure-tight seal against machine casing pressures. This configuration is rated for hazardous area classifications when used with appropriate intrinsic safety barriers. The assembly's design minimizes susceptibility to mechanical shock and vibration, ensuring the integrity of the measurement signal path from the probe to the monitoring system for long-term, uninterrupted machinery protection.

Applications

  • Power generation turbines and generators
  • Oil & gas compressors and pumps
  • Industrial rotating machinery monitoring
  • Predictive maintenance systems
  • Process automation

Technical FAQ

Q: What systems is the 21000-34-10-20-058-04-02 compatible with?
A: The 21000-34-10-20-058-04-02 contains a 3300 XL 8 mm probe. This probe is a component of a complete transducer system that must also include a 3300 XL extension cable and a 3300 XL Proximitor Sensor. The complete transducer system is directly compatible with Bently Nevada monitoring systems, including the 3500 Series, 3300 Series, and the Orbit 60 Series. It provides a standard analog voltage signal (typically 2 to 18 Vdc or -2 to -18 Vdc) to the monitor's input module for processing.

Q: What are the installation requirements?
A: Installation requires a machined mounting boss on the machine case with a 3/4 - 14 NPT tapped hole. The surface of the boss must be perpendicular to the shaft centerline to ensure accurate measurement. Use an appropriate thread sealant (e.g., PTFE tape or liquid sealant rated for the process temperature and fluid) on the NPT threads to create a secure seal and prevent loosening. The assembly should be tightened to the specified torque value. After mechanical installation, the probe gap must be set by adjusting the probe within the housing to achieve the desired DC voltage, typically the center of its linear range (e.g., -10 Vdc for a standard 80 mil / 2 mm range), before locking it in place.

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21504-00-32-10-02 | Bently Nevada | Vibration Probe

21504-00-32-10-02 | Bently Nevada | Vibration Probe

Technical Overview

The Bently Nevada 21504-00-32-10-02 is a 3300 NSv series proximity vibration probe, a fundamental component of an eddy current transducer system designed for non-contact displacement and vibration measurement on rotating machinery. Its primary function is to measure the distance (gap) between the probe tip and a conductive target material, typically a machine shaft. The probe operates by generating a high-frequency radio frequency (RF) field from its tip coil. When brought near the conductive target, this field induces eddy currents on the target's surface. These eddy currents alter the impedance of the probe's coil system. This change in impedance is detected by an associated Proximitor Sensor, which demodulates the signal into a voltage directly proportional to the probe-to-target gap. This analog voltage signal is then transmitted to a monitoring system, such as the Bently Nevada 3500 Machinery Protection System, for real-time analysis, trending, and alarming. The 21504-00-32-10-02 is constructed with a stainless steel case for durability in industrial environments and is specifically configured with a 320 mm case length and a 1.0-meter integral cable.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number21504-00-32-10-02
Product Type3300 NSv Proximity Vibration Probe
ConditionBrand New
Warranty12 Months
Unthreaded Length0 mm
Case Length320 mm (12.6 in)
Total Length1.0 metre (3.3 feet)
Connector TypeMiniature coaxial ClickLoc connector, standard cable
Probe Tip MaterialPolyphenylene Sulfide (PPS)
Case MaterialAISI 304 Stainless Steel
System Linear Range2 mm (80 mils)
System Scale Factor7.87 V/mm (200 mV/mil) with 3300 NSv Proximitor

Operational Capabilities

In Oil & Gas and Power Generation applications, the 21504-00-32-10-02 probe demonstrates high reliability for continuous monitoring of critical assets such as gas and steam turbines, compressors, and large pump motors. Its non-contacting measurement principle eliminates mechanical wear, contributing to a high Mean Time Between Failures (MTBF) for the overall protection system. The probe is engineered to operate reliably in harsh industrial conditions. The probe tip is rated for continuous operation from -34 °C to +177 °C (-29 °F to +351 °F). The robust stainless steel case provides protection against physical impact and contaminants common in plant environments. When installed as part of a complete 3300 NSv transducer system, it provides a stable and repeatable measurement essential for machine protection and condition monitoring programs, enabling early detection of developing faults like imbalance, misalignment, and fluid-induced instabilities.

Applications

  • Power generation turbines and generators
  • Oil & gas compressors and pumps
  • Industrial rotating machinery monitoring
  • Predictive maintenance systems
  • Process automation

Technical FAQ

Q: What systems is the 21504-00-32-10-02 compatible with?
A: The 21504-00-32-10-02 probe is a component of the Bently Nevada 3300 NSv Proximity Transducer System. For correct operation, it must be used in conjunction with a 3300 NSv extension cable and a 3300 NSv Proximitor Sensor. The output from the Proximitor Sensor is compatible with Bently Nevada monitoring systems, including the 3500 and 3300 series, as well as any data acquisition system, PLC, or DCS capable of accepting a -24 Vdc powered, 7.87 V/mm (200 mV/mil) analog signal.

Q: What are the installation requirements?
A: Proper installation is critical for measurement accuracy. The probe must be mounted perpendicular to the target surface using a rigid bracket. The physical gap should be set to place the DC output voltage in the middle of the system's linear range, typically -10 Vdc. The target area on the shaft must be at least 10.7 mm (0.42 in) in diameter, smooth (0.4 to 0.8 µm / 16 to 32 µin rms), and free of any electrical or magnetic irregularities (e.g., chrome plating, magnetised spots). Cable routing must avoid high-voltage power lines and other sources of electromagnetic interference. All ClickLoc connectors must be fully engaged to ensure a secure connection.

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330102-00-60-10-01-05 | Bently Nevada | 3300 XL 8 mm Proximity Probes

330102-00-60-10-01-05 | Bently Nevada | 3300 XL 8 mm Proximity Probes

Technical Overview

The Bently Nevada 330102-00-60-10-01-05 is an 8 mm reverse-mount eddy current proximity probe designed for non-contact measurement of vibration and displacement. It functions as a core component of the 3300 XL 8 mm Proximity Transducer System, which also includes an extension cable and a Proximitor Sensor. The probe operates by having the Proximitor Sensor generate a high-frequency radio frequency (RF) signal, which is transmitted through the extension cable and radiated from the probe's tip into a small electromagnetic field. When a conductive target, such as a machine shaft, enters this field, eddy currents are induced on its surface. These currents create a secondary magnetic field that opposes the primary field, causing a measurable change in the RF signal's amplitude. This change is directly proportional to the gap between the probe tip and the target surface. The Proximitor Sensor demodulates this signal, converting it into a DC voltage that accurately represents the physical distance. This conditioned voltage signal is then transmitted to a monitoring system, such as the Bently Nevada 3500, for real-time analysis of radial vibration, axial position, and shaft speed.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number330102-00-60-10-01-05
Product Type3300 XL 8 mm Reverse Mount Proximity Probe
ConditionBrand New
Warranty12 Months
Total Length1.0 meter (3.3 feet)
Case Length6.0 inches (152 mm)
Mounting OptionReverse Mount
Connector TypeMiniature coaxial ClickLocâ„¢ connector, gold-plated
Probe Tip MaterialPolyphenylene Sulfide (PPS)
Probe Case MaterialAISI 304 Stainless Steel
Agency ApprovalsMultiple Approvals: CSA (Class I, Div 1/2), ATEX/IECEx (Zone 0/1)

Operational Capabilities

In Oil & Gas and Power Generation applications, the 330102-00-60-10-01-05 probe demonstrates high reliability in demanding operational environments. Its construction with a PPS tip and stainless steel case allows for continuous operation in temperatures ranging from -34 °C to +177 °C (-29 °F to +350 °F). The gold-plated ClickLoc connector provides a secure, corrosion-resistant connection that prevents signal degradation from fluid ingress or vibration-induced intermittence. When paired with a 3300 XL Proximitor Sensor, the system provides a linear measurement range of 2.0 mm (80 mils) with a scale factor of 7.87 V/mm (200 mV/mil), ensuring precise data for machine diagnostics. The system is designed for high immunity to radio frequency interference (RFI), minimizing signal corruption in electrically noisy industrial environments. The probe's physical durability and signal integrity are critical for monitoring high-speed turbomachinery, where accurate measurement of shaft dynamics is essential for preventing catastrophic failure.

Applications

  • Power generation turbines and generators
  • Oil & gas compressors and pumps
  • Industrial rotating machinery monitoring
  • Predictive maintenance systems
  • Process automation

Technical FAQ

Q: What systems is the 330102-00-60-10-01-05 compatible with?
A: The 330102-00-60-10-01-05 probe is a component of the 3300 XL 8 mm Transducer System. For proper operation, it must be used with a 3300 XL extension cable and a 3300 XL Proximitor Sensor (e.g., part number 330180). This complete transducer system is fully compatible with Bently Nevada monitoring systems, including the 3500 Series Machinery Protection System and ADRE Sxp/408 DSPi data acquisition systems. It is not electrically or mechanically compatible with components from other transducer series, such as the 7200 or 3000 series.

Q: What are the installation requirements?
A: As a reverse-mount probe, the 330102-00-60-10-01-05 is installed from inside the machine housing, with the probe body extending outward. A clearance hole must be drilled through the machine case to accommodate the 8 mm probe tip. The target area on the observed shaft must be smooth, free of surface defects, and have a minimum diameter of 10.7 mm (0.42 in) to ensure measurement accuracy. The probe's gap should be set to the center of its linear range, typically corresponding to -10.0 Vdc. The ClickLoc connector must be tightened to the specified torque to ensure a secure, environmentally sealed connection. Cable routing must avoid areas of extreme heat, physical abrasion, and proximity to high-voltage power lines to maintain signal integrity.

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84661-67 | Bently Nevada | Velomitor Interconnect Cable

84661-67 | Bently Nevada | Velomitor Interconnect Cable

Technical Overview

The Bently Nevada 84661-67 is a specialized interconnect cable engineered for the transmission of low-level analog signals from Velomitor piezo-velocity sensors to a machinery protection system. Its primary function is to provide a reliable, noise-immune physical link between a sensor mounted on rotating machinery and a monitoring module, such as the Bently Nevada 3500/42M. The cable is constructed with a shielded, twisted-pair configuration using 22 AWG conductors. This design is critical for preserving the integrity of the millivolt-level velocity signal by minimizing interference from electromagnetic (EMI) and radio frequency (RFI) sources common in industrial environments. The 84661-67 cable transmits the dynamic voltage signal proportional to the machine's case vibration velocity, enabling the 3500 system to perform accurate vibration analysis and machinery diagnostics. The cable features a ruggedized jacket for resistance to industrial chemicals and abrasion, and its specific length and connectorization are designed for seamless integration without field modification, ensuring consistent system performance and measurement accuracy.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number84661-67
Product TypeVelomitor Interconnect Cable
ConditionBrand New
Warranty12 Months
Cable Length67 feet (20.4 meters)
Cable ConstructionShielded, twisted pair, 22 AWG (0.34 mm²) conductors
Sensor End Connector2-socket MIL-C-5015 style, environmentally sealed
Monitor End ConnectionPrepared leads for terminal block installation on 3500/42M I/O module
ShieldingOverall aluminum/polyester foil shield with tinned copper drain wire
Jacket MaterialChlorinated Polyethylene (CPE) for oil and chemical resistance
Operating Temperature Range-30°C to +100°C (-22°F to +212°F)

Operational Capabilities

In Oil & Gas and Power Generation applications, the 84661-67 interconnect cable demonstrates high reliability and signal fidelity under demanding operational conditions. Its robust CPE jacket provides protection against hydrocarbons, corrosive chemicals, and mechanical abrasion frequently encountered in these environments. The specified operating temperature range of -30°C to +100°C ensures consistent performance from cold startups to high-temperature operating conditions near turbines, compressors, and pumps. The cable's shielding effectiveness is critical for transmitting clean, low-noise vibration signals from Velomitor sensors, which is essential for the accurate detection of machinery faults such as imbalance, misalignment, and bearing degradation. Proper installation, including correct shield grounding at the monitor end only, prevents ground loops and ensures the high signal-to-noise ratio required for the advanced diagnostic algorithms within the 3500 monitoring system.

Applications

  • Power generation turbines and generators
  • Oil & gas compressors and pumps
  • Industrial rotating machinery monitoring
  • Predictive maintenance systems
  • Process automation

Technical FAQ

Q: What systems is the 84661-67 compatible with?
A: The 84661-67 cable is designed primarily for use with the Bently Nevada 3500 Machinery Protection System, connecting directly to the terminal block of a 3500/42M Velomitor/Seismic Monitor I/O Module. It is compatible with Bently Nevada Velomitor sensors, including the 330500 and 330525 models, and other piezo-velocity sensors that utilize a 2-pin MIL-C-5015 style connector and have similar output characteristics.

Q: What are the installation requirements?
A: Proper installation is critical for signal integrity. 1) Route the 84661-67 cable in dedicated instrument trays or conduit, separated from high-voltage power cables to prevent induced noise. 2) The cable shield drain wire must be terminated at the instrument ground (GND) terminal on the 3500/42M I/O module. Do not connect the shield at the sensor end to prevent ground loops. 3) Ensure the connector at the sensor is fully seated and the locking ring is tightened to maintain the environmental seal. 4) Secure the cable with appropriate clamps to provide strain relief and prevent vibration-induced damage to the cable or connectors. Adhere to a minimum bend radius of 10 times the cable's outer diameter.

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21000-27-05-40-026-03-02 | Bently Nevada | Proximity ProbeHousing Assemblies

21000-27-05-40-026-03-02 | Bently Nevada | Proximity ProbeHousing Assemblies

Technical Overview

The Bently Nevada 21000-27-05-40-026-03-02 is a proximity probe housing assembly designed to provide a secure, environmentally sealed, and adjustable mounting for proximity probes on industrial machinery. Its primary function is to protect the sensitive probe element from the harsh process environment (e.g., high pressure, corrosive gases, liquids) while allowing precise positioning relative to the observed machine shaft. This specific assembly is constructed from 316 Stainless Steel for superior corrosion resistance. It features a 3/4-14 NPT mounting thread for direct installation into the machine casing. The assembly houses a 3300 XL 8 mm probe, which operates on the eddy current principle. The probe, connected via an extension cable to a Proximitor Sensor, transmits a high-frequency RF signal. The proximity of the conductive shaft surface modulates this signal, which the Proximitor Sensor demodulates into a DC voltage proportional to the probe-to-shaft gap. This conditioned signal is then supplied to a Bently Nevada 3500 Machinery Protection System for continuous monitoring of radial vibration, axial position, and rotational speed.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number21000-27-05-40-026-03-02
Product TypeProximity Probe Housing Assembly
ConditionBrand New
Warranty12 Months
Housing Material316 Stainless Steel
Mounting Thread3/4-14 NPT
Probe Penetration Length400 mm (15.7 in)
Standoff Length50 mm (2.0 in)
Included Probe Option3300 XL 8 mm probe, 1.0 metre cable, miniature coaxial connector
Fittings OptionOne 3/4-14 NPT plug provided
Housing Operating Temperature-34 °C to +177 °C (-29 °F to +350 °F)

Operational Capabilities

In Oil & Gas and Power Generation applications, the 21000-27-05-40-026-03-02 assembly provides a robust and reliable platform for critical machinery monitoring. Its 316 Stainless Steel construction ensures long-term integrity in environments containing hydrogen sulfide (H2S), chlorides, and other corrosive agents common in refineries and offshore platforms. The NPT thread mounting, when installed with appropriate sealant, creates a high-pressure seal, preventing the escape of process gases or liquids. This is critical for safety and environmental compliance on equipment such as centrifugal compressors and high-pressure pumps. The assembly's design facilitates stable probe gapping, which is essential for the accuracy and repeatability of vibration and position measurements required for API 670 compliant protection systems. The housing is engineered for continuous, long-term service with minimal maintenance, contributing to high machine availability and reduced lifecycle costs for critical assets like gas turbines, steam turbines, and generators.

Applications

  • Power generation turbines and generators
  • Oil & gas compressors and pumps
  • Industrial rotating machinery monitoring
  • Predictive maintenance systems
  • Process automation

Technical FAQ

Q: What systems is the 21000-27-05-40-026-03-02 compatible with?
A: The 3300 XL 8 mm probe included with the 21000-27-05-40-026-03-02 assembly is part of a transducer system that requires a matching 3300 XL extension cable and a 3300 XL Proximitor Sensor. The complete transducer system output is fully compatible with Bently Nevada machinery protection and condition monitoring systems, including the 3500 Series (e.g., 3500/42M Proximitor/Seismic Monitor), 3300 Series Monitors, and ADRE data acquisition systems. The housing's 3/4-14 NPT mechanical interface is compatible with any machine case drilled and tapped to this standard thread size.

Q: What are the installation requirements?
A: Installation requires a 3/4-14 NPT tapped hole at the measurement location on the machine casing. An appropriate thread sealant (e.g., PTFE tape or pipe dope compatible with the process fluid and temperature) must be applied to the mounting threads to ensure a pressure-tight seal. The probe must be gapped by adjusting its position within the housing to achieve the correct DC voltage output (typically -10.0 Vdc for a 3300 XL 8 mm system) when measured at the Proximitor Sensor's output terminals. After gapping, the probe is secured in place using the housing's set screws. Adherence to Bently Nevada's specified torque values for the housing and any fittings is mandatory to prevent damage and ensure seal integrity.

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31000-16-05-00-100-03-02 | Bently Nevada | Proximity Probe HousingAssemblies

31000-16-05-00-100-03-02 | Bently Nevada | Proximity Probe HousingAssemblies

Technical Overview

The Bently Nevada 31000-16-05-00-100-03-02 is a proximity probe housing assembly designed for the physical protection and precise positioning of eddy current proximity probes. Its primary function is to provide a rigid, environmentally sealed conduit for mounting a probe to a machine case, enabling accurate measurement of shaft vibration and position. Constructed from 303 stainless steel, the housing offers high resistance to corrosion and physical damage common in industrial environments. This specific assembly, part number 31000-16-05-00-100-03-02, features a 3/4-14 NPT male thread for mounting into the machine case, ensuring a secure and pressure-tight fit. The housing allows for fine adjustment of the probe's distance to the target surface, which is critical for setting the correct DC gap voltage. The signal from the probe, which is an integral part of a complete transducer system, is transmitted through an extension cable to a Proximitor sensor. The Proximitor demodulates this signal into a voltage proportional to the gap, which is then fed into a Bently Nevada 3500 Machinery Protection System for continuous monitoring, analysis, and alarming.

Detailed Specifications

ParameterSpecification
ManufacturerBently Nevada
Part Number31000-16-05-00-100-03-02
Product TypeProximity Probe Housing Assemblies
ConditionBrand New
Warranty12 Months
Housing Material303 Stainless Steel
Mounting Thread3/4-14 NPT
Standoff Adapter Length10.0 inches (254 mm)
Total Case Length2.1 inches (53 mm)
Probe CompatibilityDesigned for Bently Nevada 3300 XL 8 mm Proximity Probes
Operating Temperature-34 °C to +177 °C (-29 °F to +350 °F)

Operational Capabilities

The 31000-16-05-00-100-03-02 housing assembly is engineered for high reliability in demanding industrial settings. In Oil & Gas applications, its 303 stainless steel construction and NPT threaded connection provide excellent resistance to corrosive agents such as hydrogen sulfide (H2S) and ensure pressure containment when installed correctly. In Power Generation environments, the assembly maintains positional stability for the probe across the wide operating temperatures associated with steam and gas turbines, preventing measurement drift due to thermal expansion. The rigid design protects the sensitive probe tip and extension cable from external impact and high vibration, directly contributing to the high Mean Time Between Failures (MTBF) of the overall vibration measurement channel. When installed in accordance with Bently Nevada installation procedures, the housing assembly supports the intrinsic safety and hazardous area certifications of the complete transducer system, making it suitable for deployment in classified locations.

Applications

  • Power generation turbines and generators
  • Oil & gas compressors and pumps
  • Industrial rotating machinery monitoring
  • Predictive maintenance systems
  • Process automation

Technical FAQ

Q: What systems is the 31000-16-05-00-100-03-02 compatible with?
A: The 31000-16-05-00-100-03-02 is an integral component of the Bently Nevada 3300 XL Proximity Transducer System. This system, which includes the probe, extension cable, and a 3300 XL Proximitor Sensor, is designed for direct interface with the Bently Nevada 3500 Machinery Protection System. It is also fully compatible with the legacy 3300 monitoring system. The analog voltage output from the associated Proximitor Sensor can also be integrated with other third-party PLCs, DCS, and data acquisition systems capable of processing a -2 to -18 Vdc signal.

Q: What are the installation requirements?
A: Proper installation is critical for accurate measurement. The machine case requires a mounting hole drilled and tapped for a 3/4-14 NPT thread. An appropriate thread sealant must be applied to the housing's male NPT threads to ensure a pressure-tight seal. The housing is then threaded into the machine case and tightened. The proximity probe is inserted into the housing and its axial position is adjusted to achieve the correct DC gap voltage, typically -10 Vdc for a standard 3300 XL 8 mm probe configuration. Once the gap is set, the probe is secured within the housing using its set screws. Proper system grounding, as detailed in Bently Nevada documentation, is mandatory for signal integrity.

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