177230-02-01-CN | Bently Nevada Seismic Transmitter

Introduction to the Bently Nevada 177230-02-01-CN

When machinery vibration threatens uptime, the 177230-02-01-CN from Bently Nevada provides a dependable measurement solution. This seismic transmitter converts vibration into a standard 4-20 mA current loop signal, making it easy to integrate with existing PLC, DCS, or SCADA systems. Designed for continuous operation, it helps maintenance teams detect developing faults before they cause costly failures.

Key Features and Technical Specifications

The 177230-02-01-CN is built for accuracy and durability. Its key specifications include:

• Measurement range: 0 to 50.8 mm/s (0 to 2.0 in/s) RMS
• Frequency response: 10 Hz to 1 kHz (600 to 60 kcpm) RMS
• Output: 4-20 mA current loop from Pin A to Pin B
• Excitation voltage: 12 to 30 Vdc (current limited to 40 mA)
• Settling time: less than 15 seconds within 2% of final value
• Mounted resonant frequency: greater than 12 kHz
• Transverse sensitivity: less than 5% of sensitivity
• Sensing element: ceramic / shear
• Case material: 316L stainless steel
• Connector: 3-pin MIL-C-5015, 316L stainless steel
• Mounting hole: 1/4-28 UNF
• Weight: 0.131 kg (4.62 oz)
• Operating temperature: -40°C to +85°C (-40°F to +185°F)
• Relative humidity: to 100% non-submerged

One distinctive feature is the full-scale range of 25.4 mm/s (1.0 in/s) ±10%, which allows precise calibration for specific vibration limits. This makes the transmitter suitable for applications where early warning is critical.

Applications and Use Cases

In rotating machinery monitoring, the 177230-02-01-CN excels at providing continuous vibration data. For example, in a pump room, this transmitter can be mounted on bearing housings to track vibration levels. The 4-20 mA output feeds directly into a PLC, triggering alarms when thresholds are exceeded. This proactive approach reduces unplanned downtime and extends equipment life. Moreover, its rugged stainless steel construction ensures reliable performance in harsh industrial environments.

Installation and Setup

Proper installation is essential for accurate readings. The 177230-02-01-CN features a 1/4-28 UNF mounting hole, and 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 avoid measurement errors. The 3-pin MIL-C-5015 connector simplifies wiring: Pin A is the 4-20 mA positive loop, Pin B is the loop return, and Pin C provides an unbuffered dynamic acceleration signal. Always follow the manufacturer's manual for detailed wiring and configuration.

Maintenance and Reliability

Regular inspection of the 177230-02-01-CN ensures long-term accuracy. Check the mounting integrity periodically, as loose mounting can affect readings. The hermetically sealed sensor protects against moisture, and the 316L stainless steel case resists corrosion. With no moving parts, the transmitter requires minimal maintenance, reducing total cost of ownership. For best results, verify the output signal annually against a known reference.

Compatibility and Integration

The 177230-02-01-CN is designed for use with PLCs, DCS, and SCADA systems that have internal power supplies typically current limited to 30-35 mA. Its 4-20 mA output is universally accepted, making integration straightforward. The dynamic acceleration signal on Pin C can be used for additional analysis if your system supports it. This flexibility allows the transmitter to fit into both new and existing monitoring architectures.

Common Questions About the 177230-02-01-CN

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

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

Q: What output signal does the 177230-02-01-CN provide?

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

Q: Can the 177230-02-01-CN be used in high-humidity environments?

A: Yes, it can operate in relative humidity up to 100% non-submerged.

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-CN suitable for PLC integration?

A: Yes, it is designed for use with PLCs, DCS, and SCADA systems.

Product Support and Availability

The 177230-02-01-CN is available through Petro Auto Tech. We stock this model and can provide technical support to help you integrate it into your monitoring system. Contact Petro Auto Tech for current availability and ordering information.