177230-01-02-05 | Bently Nevada 25.4 mm/s Seismic Transmitter

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

When machinery vibration threatens uptime, the 177230-01-02-05 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, and SCADA systems. Designed for continuous monitoring, it helps maintenance teams detect issues early and reduce unplanned downtime.

Key Features and Technical Specifications

The 177230-01-02-05 is built for accuracy and durability in harsh industrial environments. Its key specifications include:

• Measurement range: 0 to 25.4 mm/s (0 to 1.0 in/s) peak
• Frequency response: 3 Hz to 1 kHz (±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)

One distinctive feature is the hermetically sealed sensor, which protects against moisture and contaminants, ensuring long-term reliability even in 100% non-submerged humidity conditions.

Applications and Use Cases

This transmitter is ideal for monitoring rotating equipment such as pumps, fans, and motors. In manufacturing plants, it helps detect imbalance, misalignment, or bearing wear before they cause failures. For maintenance engineers, the 4-20 mA output simplifies wiring and reduces signal noise, leading to more accurate readings. Additionally, its compact size and robust construction make it suitable for retrofitting existing machinery without major modifications.

Installation and Mounting

Proper installation is critical for accurate vibration measurement. The 177230-01-02-05 features a 1/4-28 UNF mounting hole and optional M6 x 1 or M8 x 1.25 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 frequency response. The 3-pin MIL-C-5015 connector provides a secure, weather-resistant connection.

Maintenance and Reliability

Routine inspection of the sensor and cabling is recommended to maintain performance. Check for physical damage, loose connections, and signs of corrosion. The 316L stainless steel case offers excellent resistance to harsh chemicals and washdown environments. With no moving parts, the ceramic shear sensing element provides long service life and minimal drift. Regular calibration checks, as per manufacturer guidelines, ensure continued accuracy.

Compatibility and Integration

The 4-20 mA output is universally accepted by most industrial control systems. It works seamlessly with PLCs, DCS, and SCADA platforms that provide internal power supplies typically current-limited between 30 mA and 35 mA. The dynamic acceleration signal on Pin C allows additional diagnostic capabilities when connected to compatible monitoring equipment.

FAQs about the 177230-01-02-05

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

A: The measurement range is 0 to 25.4 mm/s (0 to 1.0 in/s) peak.

Q: What output signal does this transmitter provide?

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

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 hermetically sealed?

A: Yes, the sensor is hermetically sealed, allowing operation in up to 100% non-submerged humidity.

Product Support and Availability

At Petro Auto Tech, we stock the 177230-01-02-05 and are ready to ship. Our team can assist with technical questions and provide documentation. Contact us to verify current lifecycle status and availability before ordering.