Product Overview
The Bently Nevada 177230-02-02-05 is a precision Seismic Transmitter designed for continuous vibration monitoring in rotating machinery. This industrial automation module delivers a 4-20 mA current loop output proportional to peak vibration levels, enabling seamless integration with PLC, DCS, and SCADA systems. Built with a rugged 316L stainless steel case and hermetically sealed sensor, it withstands harsh industrial environments while providing accurate, repeatable measurements.
Key Technical Specifications
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Measurement Range: 0 – 50.8 mm/s (0 – 2.0 in/s)
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Frequency Response: 3 Hz to 1 kHz (180 to 60 kcpm) ±10%
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Output Signal: 4-20 mA current loop (Pin A to Pin B)
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Excitation Voltage: 12 to 30 Vdc (current limited to 40 mA)
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Operating Temperature: -40°C to +85°C (-40°F to +185°F)
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Case Material: 316L stainless steel
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Connector: 3-pin MIL-C-5015, 316L stainless steel
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Approvals: CSA/NRTL/C, ATEX/IECEx (Multiple Approvals)
Performance Details
The 177230-02-02-05 uses a ceramic shear sensing element, providing a mounted resonant frequency greater than 12 kHz and transverse sensitivity less than 5%. Settling time is under 15 seconds within 2% of final value, ensuring quick response to changing vibration conditions. The main loop sensitivity is calibrated such that 4 ± 0.3 mA equals 0.0 mm/s and 20 ± 2 mA equals full scale range (25.4 mm/s or 1.0 in/s).
Industry Applications
This seismic transmitter is ideal for real-time vibration monitoring in critical rotating equipment such as pumps, fans, compressors, and turbines. Its 4-20 mA output allows direct connection to existing control systems, enabling predictive maintenance and reducing unplanned downtime. For example, in a petrochemical plant, continuous vibration data from the 177230-02-02-05 helps operators detect bearing wear early, avoiding catastrophic failures and saving thousands in repair costs.
Installation & Setup Guidance
Mount the transmitter using the 1/4-28 UNF mounting hole or M6/M8 threads, applying a torque of 4 to 7 N-m (35.4 to 62.0 in-lbf). Ensure the mounting surface is clean and flat for optimal coupling. Wire per the connector convention: Pin A (4-20 mA positive loop), Pin B (loop return), Pin C (dynamic acceleration signal). Power the device with 12-30 Vdc, and verify that the system's internal power supply is current-limited to 30-35 mA as typical.
Maintenance & Reliability
With a hermetically sealed sensor and 316L stainless steel construction, the 177230-02-02-05 requires minimal maintenance. Periodic inspection of the cable and connector is recommended to prevent moisture ingress. The unit operates in up to 100% relative humidity (non-submerged) and withstands shock survival up to 9.810 m/s² (1.000 g peak). Electrical isolation exceeds 10⁸ ohms, with isolation breakdown voltage of 600 Vrms, ensuring robust performance in electrically noisy environments.
Compatibility & Integration
The 4-20 mA loop output makes the Bently Nevada 177230-02-02-05 compatible with virtually any PLC, DCS, or SCADA analog input module. It can be integrated into existing monitoring systems without specialized converters. The dynamic acceleration signal on Pin C provides additional diagnostic capability for advanced analysis.
Selection Guide & Purchasing Advice
Before purchasing, verify the measurement range and frequency response match your application requirements. Confirm the power supply voltage and current-limiting characteristics of your control system. PLC Source PRO offers this genuine Bently Nevada transmitter with full traceability, ensuring reliable performance for your critical assets.