149811-01

Description

• Model: 149811-01
• Type: 24 Volt Transducer Direct Input Card
• Manufacturer: Bently Nevada

Inputs

• Blocks: 2 blocks per card, 4 inputs per block
• Input Use: Supports speed1 or KPH on a single card
• Simultaneous Sampling: Both blocks sampled simultaneously
• Multi-event Wheels: Not supported

Transducer Compatibility

• Type: 3-wire voltage mode sensors
• Compatible Models:
  • 3300
  • 3300XL
  • 3300 REBAM
  • 7200
  • 330400
  • 330425

Electrical Specifications

• Power Supply: -24 ± 5% Vdc
• Maximum Current: 15 mA (per channel)
• Maximum Cable Length: 305 m (1000 ft)

Accuracy

• Amplitude Accuracy: 1%
• Phase Accuracy: ±1°

A/D and Impedance

• Resolution: 14 bits
• Input Impedance: 10 kΩ

Keyphasor Input

• Speed Range: 6 to 36,000 cpm
• Duty Cycle: Greater than 1% or 50 µs
• Full Scale Gap: -24 volts
• Amplitude Minimum: 2.0 volts peak to peak

Filters and Frequency Response

• Hardware Frequency Response: 1/3 Hz and 24 kHz (3 dB corners)
• Direct Filter: 2-pole high-pass, 1 Hz to 12.8 kHz
• Prime Spike Filter:
  • 4-pole high-pass, 1 Hz to 12.8 kHz
  • 2-pole low-pass, 10 Hz to 12.8 kHz
• Rotor Region Filter:
  • 2-pole high-pass, 1 Hz to 12.8 kHz
  • 2-pole low-pass, 10 Hz to 12.8 kHz
• High Frequency Filter: 4-pole high-pass, 1 Hz to 12.8 kHz

Synchronous Waveforms

• Frequency Span: 32, 64, and 128 samples per revolution (20 to 36,000 CPM)
• Waveform Size: 8192 samples maximum
• Anti-alias Filter: None on synchronous path

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