1 3
Bently Nevada

3300/50-01-01-00-00 Bently Nevada Tachometer Module
SKU: 3300/50-01-01-00-00
In stock: 10
Description

Bently Nevada 3300/50-01-01-00-00 Tachometer Module

The Bently Nevada 3300/50-01-01-00-00, also cataloged as the 3300/50 Tachometer Module, operates as a dedicated hardware component for rotational speed measurement and trip relay execution within the 3300 rack system.

Suffix Breakdown & Model Matrix

  • -01 (Tachometer Type): Dual setpoint tachometer (overspeed / underspeed).
  • -01 (Alert Relay Option): Epoxy-sealed relays.
  • -00 (Agency Approval): None required.
  • -00 (Safety Barrier): None installed.

Hardware Specifications

Parameter Specification
Model 3300/50-01-01-00-00
Brand Bently Nevada
Origin USA
Weight 1.5 kg
Dimensions 5.1 cm x 20.3 cm x 33.0 cm
Operating Temp -20 to +65 deg C
Power Consumption 24 VDC nominal
Core Performance 1–120,000 RPM range, <1 ms response, dual transducer inputs

Eddy-Current Probe Scaling and Gap Voltage Validation

The tachometer accepts inputs from proximity probes, magnetic pickups, or TTL signals. Internal conditioning validates probe gap voltages against -10 VDC reference points to ensure installation integrity. Cross-talk suppression maintains fidelity when dual transducers are used for internal voting logic.

Frequently Asked Questions

Q: Can the tachometer module process dual transducer inputs? A: Yes, it accepts dual inputs with internal voting logic for overspeed and underspeed detection.

Q: What is the typical response time for trip relay activation? A: Relay switching occurs in less than 1 millisecond.

Q: Are the relay contacts isolated? A: Yes, SPDT epoxy-sealed relays provide isolated trip outputs for external shutdown circuits.

Field Installation Guidelines

  • Insert into designated rack slots with full connector engagement.
  • Ensure probe wiring is shielded and grounded at the rack end only.
  • Route input cabling separately from high-voltage conductors to minimize induced noise.
  • Validate probe gap voltage near -10 VDC before commissioning.
  • Configure overspeed and underspeed setpoints via rack interface prior to turbine startup.