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

Introduction to the 177230-00-02-05

When machinery vibration threatens uptime, the 177230-00-02-05 from Bently Nevada provides a dependable solution. This seismic transmitter converts vibration into a standard 4-20 mA current loop signal, making it easy to integrate with existing PLC, DCS, and SCADA systems. Built for continuous operation, it helps you detect problems early and avoid costly downtime.

Key Features & Technical Specs

• Measurement range: 0 – 12.7 mm/s (0 – 0.5 in/s) peak
• Frequency response: 3 Hz to 1 kHz (180 to 60 kcpm) ±10%
• Output signal: 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
• Case material: 316L stainless steel
• Connector: 3-pin MIL-C-5015, 316L stainless steel
• Operating temperature: -40°C to +85°C (-40°F to +185°F)
• Weight: 131 g (4.62 oz) typical

One standout feature is the hermetically sealed sensor, which protects against moisture and harsh environments. This design ensures stable performance even in high-humidity conditions, reducing the risk of premature failure.

Applications & Use Cases

The 177230-00-02-05 is ideal for monitoring rotating machinery such as pumps, fans, motors, and compressors. Its 4-20 mA output simplifies connection to control systems, enabling continuous vibration tracking. For example, in a chemical plant, this transmitter can help detect bearing wear before it leads to unplanned shutdowns. Additionally, its rugged stainless steel construction suits demanding industrial settings.

Installation & Setup

Mounting the 177230-00-02-05 is straightforward with its 1/4-28 UNF mounting hole or M6/M8 threads. Apply a mounting torque of 4 to 7 N-m (35.4 to 62.0 in-lbf) to ensure a secure fit. Wire the loop as follows: Pin A for positive 4-20 mA, Pin B for loop return, and Pin C for the dynamic acceleration signal. Always verify the excitation voltage is within 12 to 30 Vdc and that the system current limit is appropriate.

Maintenance & Reliability

Routine inspection of the transmitter and its connections helps maintain accurate readings. Check the sensor seal periodically to ensure it remains intact. Because the unit is hermetically sealed, it requires minimal upkeep. Following the manufacturer’s guidelines for periodic verification will extend service life and reduce total cost of ownership.

Compatibility & Integration

The 177230-00-02-05 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 provides additional diagnostic capability.

Troubleshooting & Common Issues

If the output current is not within the expected 4-20 mA range, check the wiring and excitation voltage first. Ensure the mounting torque is correct to avoid resonance issues. If readings seem unstable, verify that the sensor is not exposed to excessive transverse vibration. For persistent problems, consult the official Bently Nevada documentation.

FAQs

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) peak.

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: What approvals does the 177230-00-02-05 have?

A: It has multiple approvals including CSA/NRTL/C and ATEX/IECEx.

Q: Is the sensor hermetically sealed?

A: Yes, the sensor is hermetically sealed for protection against moisture.

Product Support & Availability

The 177230-00-02-05 is available from Petro Auto Tech. Contact our team for current availability and lead times. We are ready to help you integrate this reliable vibration monitoring solution into your operations.