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Configured for mechanical protection and transducer support in machine monitoring systems, the Bently Nevada 21000-16-10-00-144-03-02 (21000 Proximity Probe Housing Assembly) provides direct physical execution for housing 3300 XL and NSv series probes within industrial monitoring networks.

Hardware Specifications

Parameter Specification
Model 21000-16-10-00-144-03-02
Brand Bently Nevada
Origin USA
Dimensions 1.0 inch (25.4 mm) penetration
Operating Temp -51 deg C to +177 deg C
Power Consumption N/A (Passive mechanical component)
Housing Material Aluminum
Sleeve Material 304 Stainless Steel
Mounting Thread 3/4-14 NPT

Rotor Dynamics and Gap Voltage Validation

The 21000 housing assembly is engineered to provide the mechanical stability required for accurate rotor dynamics monitoring. Maintaining the probe at a fixed physical reference relative to the rotor surface is mandatory for capturing shaft vibration data within the linear range of the transducer. During installation, technicians must perform gap voltage validation to confirm the probe tip is set to the target -10 VDC at the monitor input. Proper mounting ensures the sensor remains within its linear eddy-current probe scaling range, preventing amplitude distortion and phase errors that arise if the probe is positioned outside specified clearances.

Frequently Asked Questions

Q: Does the aluminum and stainless steel construction require specific grounding?

A: The housing must be installed to ensure electrical continuity with the machine case or dedicated instrument ground. Proper bonding prevents potential differences that can induce noise in the proximity probe signal path.

Q: Can this assembly be used in hazardous environments as specified?

A: Yes, this housing is rated for Class I, Division 1 and 2, Groups C and D applications. Ensure all conduit seals and fittings are installed according to local electrical codes for hazardous area classification.

Field Installation Guidelines

  1. Apply a compatible thread sealant to the 3/4-14 NPT mounting threads to ensure a pressure-tight connection to the machine case.
  2. Secure the probe sleeve to the required 1.0 inch penetration depth, ensuring the lock nut is torqued to prevent vibration-induced movement.
  3. Route the 1.0 m probe cable through appropriate conduits, ensuring a minimum separation of 30 cm from high-power AC lines to facilitate cross-talk suppression.
  4. Verify that the internal O-ring seals are undamaged before final assembly to maintain the integrity of the environmental protection rating.

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