Bently Nevada 21000 Series

Bently Nevada 21000-16-10-00-144-03-02 Proximity Probe Housing Assembly The Bently Nevada 21000-16-10-00-144-03-02, also cataloged as the 21000 Series Proximity Probe Housing Assembly, functions as a mechanical interface component for eddy-current probe installation and positional alignment within Turbine Supervisory Instrumentation (TSI) systems. Hardware Specifications Parameter Specification Model Brand Bently Nevada Origin USA Weight Approx. 0.25 kg Dimensions 63.5 mm Height × 38.1 mm Diameter Operating Temp -40 degC to +120 degC Power Consumption Passive mechanical assembly Eddy-Current Probe Scaling and Gap Voltage Validation This housing supports precise eddy-current probe scaling by maintaining fixed probe extension lengths relative to the machined face. Installation requires verification of gap voltage targets near -10 VDC when interfaced with Bently Nevada proximity probe drivers. Correct scaling prevents cross-talk suppression loss between adjacent transducer channels in rotor dynamics monitoring arrays. Frequently Asked Questions Q: Can this housing be used with non-Bently Nevada probes? A: Physical mounting may allow fitment; however, gap voltage validation and scaling accuracy cannot be guaranteed outside supported models. Q: Does the assembly support hot-swap replacement in live machinery? A: Mechanical removal is possible without system shutdown, but electrical disconnection of the probe cable is required before withdrawal to avoid signal transients. Q: What thread engagement is required for stable mounting? A: Minimum 5 full NPT thread turns are required to maintain vibration isolation under high-G radial loads. Field Installation Guidelines Mount the assembly directly to the machine casing using manufacturer-specified threads. Ensure probe tip clearance matches the pre-defined gap voltage range prior to final tightening. Use shielded twisted-pair cabling routed away from power conductors to reduce electromagnetic interference. Verify probe orientation to prevent mechanical contact with rotating components during operational transients.

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Bently Nevada 21000-16-10-00-124-03-02 Proximity Probe Housing Assemblies Configured for eddy-current probe mounting and mechanical runout measurement in Bently Nevada 3300 XL Transducer Systems, the Bently Nevada 21000-16-10-00-124-03-02 (21000 Series Proximity Probe Housing Assembly) provides direct physical interface execution for shaft vibration monitoring. Hardware Specifications Parameter Specification Model Brand Bently Nevada Origin USA Weight 2 kg Dimensions N/A (Housing assembly per model suffix) Operating Temp -35 degC to +85 degC Power Consumption Passive device, no power consumption Probe Type 3300 XL 8 mm probe with connector Probe Cable Length 1.0 m (39 in) Probe Penetration 12.4 in Fittings One 3/4-14 NPT plug; one 3/4-14 to 1/2-14 NPT reducer; one cable seal grip with grommets for cable sizes 1/8 to 3/8 in Mounting Thread 3/4-14 NPT Material Aluminum body with 304 stainless steel sleeve Eddy-Current Probe Scaling and Gap Voltage Validation The assembly supports calibrated eddy-current probe scaling per API 670 for radial vibration and thrust position measurements. Gap voltage validation targets -10 VDC for optimal linear range. Mechanical installation must ensure rotor dynamics compatibility without inducing probe-to-shaft contact during transient speed events. Cross-talk suppression is achieved through proper shield termination at the housing gland. Frequently Asked Questions Q: Does this housing support hot swapping of the proximity probe? A: No. Removal or replacement requires system shutdown and re-validation of gap voltage. Q: What is the minimum thread engagement for NPT mounting? A: A minimum of 5 full threads is required for pressure-tight installation. Q: Is probe penetration adjustable after installation? A: No. Penetration length is fixed by the machined housing dimensions specified in the model suffix. Field Installation Guidelines Install housing with proper torque on NPT threads using PTFE tape or anaerobic thread sealant compatible with aluminum. Terminate probe cable shield directly to housing ground lug to prevent ground loops. Verify probe tip clearance before final tightening. Ensure cable seal grip grommet matches installed cable diameter to maintain ingress protection.

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Bently Nevada 21000-16-10-00-077-03-02 Proximity Probe Housing Assembly Configured for eddy-current proximity probe mounting and alignment in Bently Nevada 3300 XL Transducer Systems, the Bently Nevada 21000-16-10-00-077-03-02 (21000 Proximity Probe Housing Assembly) provides direct physical retention and environmental sealing for shaft vibration sensing elements. Suffix Breakdown & Model Matrix Position Code Description 1-2 16 3300 XL 8 mm eddy-current proximity probe 3-4 10 Probe cable length 1.0 m (39 in) 5-6 00 No standoff adapter 7-9 077 Probe penetration 7.7 in (195.58 mm) 10-11 03 3/4-14 NPT plug, reducer to 1/2-14 NPT, cable seal grip with grommets for 1/8–3/8 in OD cables 12-13 02 Mounting thread 3/4-14 NPT Hardware Specifications Parameter Specification Model Brand Bently Nevada Origin USA Weight 1.05 kg Dimensions 30.5 x 8.5 x 8.5 cm Operating Temp -40 to 85 degC Power Consumption Passive — none required Material Aluminum Mounting Thread 3/4-14 NPT Probe Compatibility 3300 XL 8 mm Eddy-Current Proximity Probe, 1.0 m cable Probe Penetration 7.7 in (195.58 mm) Cable Gland Range 1/8 to 3/8 inches OD Gap Voltage Validation and Cross-Talk Suppression The housing positions the 3300 XL 8 mm probe at a fixed standoff to achieve nominal gap voltage of -10 VDC for linear eddy-current transducer scaling. Mechanical rigidity minimizes cross-talk suppression issues in multi-sensor rotor dynamics applications by isolating probe bodies from adjacent vibrating structures and reducing capacitive coupling along shared cable runs. Frequently Asked Questions Q: Is the 3300 XL probe included with this housing assembly? A: The assembly is configured for a 3300 XL 8 mm probe with 1.0 m cable; verify whether the probe is supplied separately per your purchase configuration — the housing itself does not include the electronic driver. Q: Can the probe be replaced while the machine is running? A: No. The system must be de-energized and the transducer loop disconnected before probe removal to prevent false trip signals and damage to the conditioning module. Q: Does the absence of a standoff adapter (suffix 00) affect probe calibration? A: Yes. Probe-to-target clearance must be verified with the actual standoff hardware installed in the final assembly; no additional adapter means the probe tip position is set solely by the housing barrel depth. Field Installation Guidelines Thread the housing into a rigid 3/4-14 NPT boss on the machinery case with minimum 5 full thread engagement and appropriate PTFE or pipe-thread sealant. Insert the 3300 XL probe, set tip clearance with calibrated feeler gauges, then tighten the probe set screw. Ground the probe cable shield at one point only — preferably at the system termination — to avoid ground loops. Route the cable away from high-current power conductors and maintain the minimum bend radius specified by Bently Nevada probe documentation.

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