3300/20

Overview

• Model: 3300/20
• Type: Dual Thrust Position Monitor
• Manufacturer: Bently Nevada

Inputs

• Signal: Accepts one or two proximity probe signal inputs.
• Input Impedance: 10 kΩ.
• Sensitivity:
  • User-programmable for 200 mV/mil (8 V/mm) or 100 mV/mil (4 V/mm).

Power

• Nominal Consumption: 1.5 watts.

Signal Conditioning

• Accuracy:
  • Within ±0.33% of full-scale typical,
  • ±1% maximum at +25°C (+77°F).

Outputs

• Recorder Outputs:
  • User-programmable for:
    • +4 to +20 mA,
    • 0 to -10 Vdc, or
    • +1 to +5 Vdc.
  • Outputs are proportional to programmed monitor full-scale.
  • Independent recorder outputs for each channel.
  • Monitor operation unaffected by short-circuits on recorder outputs.
• Recorder Accuracy (at +25°C / +77°F):
  • +4 to +20 mA: ±0.7% of signal, ±0.09 mA offset.
  • +1 to +5 Vdc: ±1.1% of signal, ±10 mV offset.
  • 0 to -10 Vdc: ±1.1% of signal, ±15 mV offset.
• Output Impedance (voltage outputs): 100 Ω (minimum load resistance: 10 kΩ).
• Voltage Compliance (current outputs): 0 to +12 Vdc range across load.
  • Load resistance: 0 to 600 Ω when using +4 to +20 mA option.
• Buffered Transducer Outputs:
  • One coaxial connector per channel on the front panel.
  • One terminal connection per channel on the rear panel.
  • All are short-circuit protected.
• Output Impedance: 100 Ω.
• Transducer Supply Voltage:
  • User-programmable for -24 Vdc or -18 Vdc.
  • Current limited on individual monitor circuit board.

Alarm Setpoints

• Alarms: Both alarms (Alert and Danger) are bi-directional (normal and counter).
• Adjustment:
  • Digitally adjustable from 0 to 100% of full-scale.
  • Alarms are repeatable within 0.39% of full-scale after being set.
  • Set within LCD resolution (±1.6%).

Physical

• Space Requirements: One rack position (except for positions 1 and 2, reserved for Power Supply and System Monitor).
• Weight: 1 kg (2.2 lbs.).

Field wiring diagram

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