177230-02-01-05 | Bently Nevada Seismic Transmitter 0-50.8 mm/s

Introduction to the Bently Nevada 177230-02-01-05 Seismic Transmitter

When you need dependable vibration monitoring for rotating machinery, the 177230-02-01-05 from Bently Nevada offers a robust solution. This seismic transmitter converts vibration into a standard 4-20 mA signal, making it ideal for integration with existing control systems. Its compact, rugged design ensures long-term performance even in demanding industrial environments.

With a measurement range of 0 to 50.8 mm/s (0 to 2.0 in/s) and a frequency response of 10 Hz to 1 kHz, this transmitter provides accurate, real-time data. Whether you are monitoring pumps, fans, or compressors, the 177230-02-01-05 helps you detect issues early, reducing downtime and maintenance costs.

Key Features and Technical Specifications

• Measurement Range: 0 – 50.8 mm/s (0 – 2.0 in/s) RMS
• Frequency Response: 10 Hz to 1 kHz (600 to 60 kcpm) RMS
• Output Signal: 4-20 mA current loop (Pin A to Pin B)
• Excitation Voltage: 12 to 30 Vdc (current limited to 40 mA)
• Operating Temperature: -40°C to +85°C (-40°F to +185°F)
• Case Material: 316L stainless steel
• Connector: 3-pin MIL-C-5015, 316L stainless steel
• Mounting: 1/4-28 UNF or M6 x 1 SI / M8 x 1.25 SI threads
• Weight: 0.131 kg (4.62 oz)
• Approvals: Multiple Approvals (CSA/NRTL/C, ATEX/IECEx)

One standout feature is the hermetically sealed sensor, which protects against moisture and contamination, ensuring reliable operation in harsh conditions. Additionally, the transmitter's transverse sensitivity is less than 5%, minimizing measurement errors from cross-axis vibrations.

Applications and Use Cases

The 177230-02-01-05 is designed for use with PLCs, DCS, and SCADA systems that have internal power supplies typically current-limited to 30-35 mA. This makes it a versatile choice for retrofitting existing machinery or new installations. Common applications include:

• Monitoring vibration on pumps, motors, and fans
• Condition monitoring of compressors and turbines
• Predictive maintenance programs in manufacturing plants
• Vibration monitoring in oil and gas, petrochemical, and power generation facilities

Because the output is a standard 4-20 mA signal, it can be easily integrated into most control systems without specialized hardware. This simplifies installation and reduces overall system complexity.

Installation and Setup

Proper installation is critical for accurate vibration measurement. The transmitter can be mounted using a 1/4-28 UNF tapped hole or M6/M8 metric threads. Recommended mounting torque is 4 to 7 N-m (35.4 to 62.0 in-lbf). Ensure the mounting surface is clean and flat to achieve optimal coupling.

Wiring is straightforward: Pin A connects to the 4-20 mA positive loop, Pin B to the loop return, and Pin C provides an optional dynamic acceleration signal. The transmitter operates with an excitation voltage of 12 to 30 Vdc, and the loop current is limited to 40 mA. Always verify that your system's power supply meets these requirements before connection.

Maintenance and Reliability

The 177230-02-01-05 is built for long service life with a 316L stainless steel case and hermetically sealed sensor. It can withstand relative humidity up to 100% non-submerged, making it suitable for humid environments. The sensor's shock survivability is rated at 9.810 m/s² (1.000 g peak) maximum drop test, ensuring durability during handling.

To maintain reliability, periodically inspect the mounting and connector for signs of wear or corrosion. Verify that the excitation voltage remains within the specified range. No routine calibration is required, but we recommend checking output signal accuracy against a known reference if you suspect drift.

Compatibility and Integration

This transmitter is compatible with any PLC, DCS, or SCADA system that accepts a 4-20 mA input. The current loop output simplifies integration, eliminating the need for additional signal conditioning. The dynamic acceleration signal on Pin C can be used for advanced diagnostics if your system supports it.

With multiple approvals including CSA/NRTL/C and ATEX/IECEx, the 177230-02-01-05 is suitable for use in hazardous areas, subject to installation guidelines. Always refer to the product datasheet and local regulations for specific requirements.

Frequently Asked Questions

Q: What is the measurement range of the 177230-02-01-05?

A: The measurement range is 0 to 50.8 mm/s (0 to 2.0 in/s) RMS.

Q: What output signal does this transmitter provide?

A: It provides a 4-20 mA current loop output from Pin A to Pin B, proportional to peak vibration levels.

Q: Can I use this transmitter with my existing PLC?

A: Yes, it is designed for use with PLCs, DCS, and SCADA systems that have internal power supplies current-limited to 30-35 mA.

Q: What is the operating temperature range?

A: The operating temperature range is -40°C to +85°C (-40°F to +185°F).

Q: Is the 177230-02-01-05 suitable for hazardous areas?

A: Yes, it has multiple approvals including CSA/NRTL/C and ATEX/IECEx, making it suitable for hazardous locations.

Product Support and Availability

The Bently Nevada 177230-02-01-05 is available through Petro Auto Tech. We stock this item and can ship promptly to minimize your downtime. For technical assistance or to verify compatibility with your system, contact our knowledgeable team. We are committed to helping you find the right solution for your vibration monitoring needs.