Technical Specifications & Performance Parameters (Representative of E1667.x family):
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Input: 1 or 2 channels, compatible with standard 8 mm / 11 mm eddy-current probe + extension cable (Braun A5S or equivalent)
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Probe Excitation: Proprietary oscillator driving probe coil at RF frequency (~1–2 MHz)
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Output (per channel): -2 to -18 V DC (displacement/gap), linearly proportional to probe-to-target gap; optional 4–20 mA active output for DCS/PLC
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Measurement Range: Configurable gap range (typically 0–2 mm or 0–4 mm depending on probe)
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Frequency Response: DC to 10 kHz (-3 dB) for dynamic (vibration) signal; gap (static) DC-coupled
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Linearity Error: ≤ ±0.5 % F.S.
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Power Supply: 24 V DC (±10 %) from rack backplane or external; max. consumption ~3 W
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Alarm Relays / Logic: OK (probe health), Alert, Danger — via rack bus or optional relay module
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Compliance: API 670 (5th Edition) for machinery protection systems
Material & Structural Features:
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Form Factor: Plug-in Eurocard module (typically 3U height, single-width or double-width)
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Front Panel: Trimmers for zero/gain calibration, BNC test points, LEDs for Power / OK / Alarm
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Connections: Rear backplane connector for probe input, power, and output signals
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Dimensions (Typical): 100 mm (H) × 22.5 mm (W) × 160 mm (D) — varies by rack version
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Weight: Approx. 200 – 300 g
Operating Conditions & Installation Requirements:
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Operating Temp.: 0 °C to +60 °C (some variants -20 °C to +70 °C)
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Storage Temp.: -20 °C to +70 °C
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Humidity: 5 % – 95 % RH non-condensing
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Installation: Insert into compatible Braun E16 rack (E1634x or similar); ensure proper grounding of probe shield (drain wire to ground terminal, not to signal)
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Calibration: Gap calibration required with target material of same alloy as machine shaft
Application Scenarios: Steam/gas turbine shaft vibration & position monitoring, compressor casing expansion, bearing housing vibration, API 670-compliant turbomachinery protection in power plants, refineries, and petrochemical facilities.
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