177230-00-02-05 | Bently Nevada Seismic Transmitter 0-12.7 mm/s

Introduction to the Bently Nevada 177230-00-02-05 Seismic Transmitter

When reliable vibration monitoring is critical, the 177230-00-02-05 from Bently Nevada provides a dependable solution. This seismic transmitter converts vibration into a standard 4-20 mA signal, making it easy to integrate with existing control systems. Designed for industrial environments, it offers robust performance and long-term stability.

With a measurement range of 0 to 12.7 mm/s (0 to 0.5 in/s) and a frequency response of 3 Hz to 1 kHz, this transmitter captures essential vibration data. Its compact, rugged construction ensures it can withstand demanding conditions. This makes it a practical choice for maintenance engineers seeking to monitor machinery health.

Key Features and Technical Specifications

The 177230-00-02-05 is engineered for accuracy and durability. Below are the core specifications that define its performance:

• Measurement Range: 0 – 12.7 mm/s (0 – 0.5 in/s)
• Frequency Response: 3 Hz to 1 kHz (180 to 60 kcpm) ±10%
• Output Signal: 4-20 mA current loop (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
• 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
• Weight: 131 g (4.62 oz) typical

One distinctive feature is the hermetically sealed sensor, which protects against moisture and dust. This contributes to reliable operation in humid environments, with relative humidity up to 100% non-submerged. Additionally, the transmitter offers electrical isolation greater than 10^8 ohms, ensuring signal integrity.

Applications and Use Cases

The 177230-00-02-05 is suitable for various rotating machinery, including pumps, fans, and motors. Its 4-20 mA output simplifies connection to PLCs, DCS, and SCADA systems. Maintenance engineers can use this transmitter for continuous vibration monitoring, helping to detect early signs of bearing wear or imbalance.

Because it operates over a wide temperature range, it works well in outdoor or unheated facilities. The rugged stainless steel case resists corrosion, making it ideal for chemical or marine environments. Moreover, its compact size allows installation in tight spaces without compromising performance.

Installation and Setup

Proper installation is key to accurate readings. The transmitter mounts using a 1/4-28 UNF hole in the body, with optional M6 or M8 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 for optimal coupling.

Wiring follows a clear convention: Pin A carries the 4-20 mA positive loop, Pin B is the loop return, and Pin C provides a dynamic acceleration signal. Connect the excitation voltage (12 to 30 Vdc) with current limited to 40 mA. Always verify the power supply is current-limited to avoid damage.

Maintenance and Reliability

Routine inspection of the 177230-00-02-05 ensures long-term reliability. Check the connector for tightness and signs of corrosion. Because the sensor is hermetically sealed, internal components are protected from environmental contaminants.

Periodically verify the output signal against a known reference to confirm accuracy. The transmitter's design minimizes maintenance needs, reducing downtime and overall cost of ownership. Following the manufacturer's guidelines helps maintain optimal performance.

Compatibility and Integration

This transmitter 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, simplifying integration into existing monitoring loops. The dynamic signal on Pin C can be used for additional analysis if required.

Common Questions About the 177230-00-02-05

Q: What is the measurement range of the 177230-00-02-05?

A: The measurement range is 0 to 12.7 mm/s (0 to 0.5 in/s).

Q: What output signal does this transmitter provide?

A: It provides a 4-20 mA current loop output from Pin A to Pin B.

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 sensor sealed against moisture?

A: Yes, the sensor is hermetically sealed and can operate in up to 100% relative humidity (non-submerged).

Product Support and Availability

The 177230-00-02-05 is available through Petro Auto Tech, an industrial automation parts supplier. Contact Petro Auto Tech for current availability and pricing. They can also provide technical assistance and documentation.