BRAUN E1667.111

Product Introduction: The Braun E1667.111 is a single- or dual-channel signal conditioning / monitoring module designed for use with eddy-current proximity probes (non-contact gap/velocity/acceleration sensors) in turbomachinery protection systems. It conditions the probe signal into a proportional DC voltage or 4–20 mA current and provides alarm/status outputs per API 670 recommendations. It is typically mounted in a Braun E16 rack system.

Category: Others

Description

Technical Specifications & Performance Parameters (Representative of E1667.x family):

Input: 1 or 2 channels, compatible with standard 8 mm / 11 mm eddy-current probe + extension cable (Braun A5S or equivalent)
Probe Excitation: Proprietary oscillator driving probe coil at RF frequency (~1–2 MHz)
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
Measurement Range: Configurable gap range (typically 0–2 mm or 0–4 mm depending on probe)
Frequency Response: DC to 10 kHz (-3 dB) for dynamic (vibration) signal; gap (static) DC-coupled
Linearity Error: ≤ ±0.5 % F.S.
Power Supply: 24 V DC (±10 %) from rack backplane or external; max. consumption ~3 W
Alarm Relays / Logic: OK (probe health), Alert, Danger — via rack bus or optional relay module
Compliance: API 670 (5th Edition) for machinery protection systems

Material & Structural Features:

Form Factor: Plug-in Eurocard module (typically 3U height, single-width or double-width)
Front Panel: Trimmers for zero/gain calibration, BNC test points, LEDs for Power / OK / Alarm
Connections: Rear backplane connector for probe input, power, and output signals
Dimensions (Typical): 100 mm (H) × 22.5 mm (W) × 160 mm (D) — varies by rack version
Weight: Approx. 200 – 300 g

Operating Conditions & Installation Requirements:

Operating Temp.: 0 °C to +60 °C (some variants -20 °C to +70 °C)
Storage Temp.: -20 °C to +70 °C
Humidity: 5 % – 95 % RH non-condensing
Installation: Insert into compatible Braun E16 rack (E1634x or similar); ensure proper grounding of probe shield (drain wire to ground terminal, not to signal)
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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