VIBRO-METER GSI127 244-127-000-017-A2-B02

  • Product Name: GSI127 Galvanic Separation Unit (Signal Isolation Amplifier)
  • Product Introduction: Part of the VM600 machinery protection system, this module provides 4kV galvanic isolation between field vibration sensors (accelerometers/proximity probes) and rack-based monitors to eliminate ground loops and protect against transient surges.
Category:
Description
  • Technical Specifications:
    • Model Suffix: A2 = Ex certified for hazardous areas (Zone 1/2), B02 = 1V/mA current-to-voltage conversion characteristic.
    • Supply: 18-30 VDC, no-load ≤80mA, loaded ≤120mA.
    • Output: 2-20 VDC (into 10kΩ), impedance 20Ω, offset 12mA @ 7V.
    • Bandwidth: 0-20 kHz full-range vibration transmission.
    • Drift: Offset ≤2 mV/°C, Sensitivity ≤50 ppm/°C.
    • Noise: Residual ≤3.5 µV RMS/√Hz.
    • Rejection: Power supply ripple rejection ≥60 dB (10-400 Hz).
  • Functional Features: Powers upstream sensors (max 22mA for IQS4xx/IPC707 etc.), floating output to reject common-mode noise, compliant with API 670for turbomachinery protection, SIL2 functional safety.
  • Structural Features: Plug-in module for VM600 rack, gold-plated backplane connectors, dual-stage isolation barrier.
  • Application Scenarios: Steam/gas turbine shaft vibration (X/Y probes), axial displacement, bearing housing acceleration in power plants, refineries, compressor stations.
  • Installation Requirements: Install between sensor preamplifier and monitoring rack; ensure barrier earth is connected to clean instrument ground; verify Ex certification label before hazardous area deployment.
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