Bently Nevada 126623-01 Aero GT I/O Module External Terminations

The Bently Nevada 126623-01 Aero GT I/O Module is specifically designed for aeroderivative gas turbines, providing high-accuracy signal conditioning, alarm functionality, and versatile measurement capabilities to monitor machinery effectively.

Key Specifications

Input Characteristics

• Impedance: Greater than 95 kΩ
• Sensitivity:
  • Aeroderivative: 3.94 mV/(mm/s), 5.71 mV/(mm/s)
  • Aeroderivative2 & Multimode Aeroderivative: Options range from 1.02 mV/(m/s²) to 10.19 mV/(m/s²)

Signal Conditioning

• Frequency Response:
  • Direct Signal: 4 Hz to 30 kHz (-3 dB)
  • Bandpass Filter:
    • Low-pass Corner: 200 Hz (-3 dB), 10-pole rolloff (200 dB/decade)
    • High-pass Corner: Configurable to 25, 75, or 100 Hz (-3 dB), 10-pole rolloff
• Tracking Filter:
  • Supports machine speeds of 60 to 240,000 cpm
  • Constant Q configuration with selectable operating speeds (2,400–18,000 RPM)
  • Rolloff: 6-pole (120 dB/decade)
• Accuracy: ±0.33% of full scale typical, ±1% maximum (exclusive of filters)

Alarm Functionality

• Setpoints:
  • Configurable Alert and Danger levels for measured values
  • Adjustable range: 0–100% of full-scale (limited by transducer range)
  • Alarm accuracy: ±0.13%
• Alarm Types:
  • Aeroderivative: Direct, 1X Amplitude, Bandpass
  • Aeroderivative2: Adds 1X Phase Lag
  • Multimode Aeroderivative: Includes additional Direct-B, Bandpass-B, 1X Ampl-B modes
• Alarm Delays:
  • One Alert and one Danger delay for each proportional value

Proportional Values

• Aeroderivative: Direct, 1X Amplitude, Bandpass
• Aeroderivative2: Adds Bias and 1X Phase Lag
• Multimode Aeroderivative: Adds Direct-B, Bandpass-B, and Mode

Environmental Limits

• Operating Temperature: -30 °C to +65 °C (-22 °F to +150 °F)
• Storage Temperature: -40 °C to +85 °C (-40 °F to +185 °F)
• Humidity: 95%, non-condensing

Physical Specifications

• Dimensions: 241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in)
• Weight: 0.45 kg (1.0 lb)

Spares

• 126623-01: Aero GT I/O Module External Terminations

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