177230-02-02-05 | Bently Nevada Seismic Transmitter

Introduction to the 177230-02-02-05

When machine vibration threatens uptime, the 177230-02-02-05 from Bently Nevada provides a dependable solution. This seismic transmitter converts dynamic vibration into a standard 4-20 mA current loop signal, making it ideal for integration with PLCs, DCS, and SCADA systems. Built for continuous operation, it helps you detect developing faults before they cause costly failures.

Key Features and Technical Specifications

The 177230-02-02-05 is engineered for precision and durability. Its key specifications include:

• Measurement range: 0 to 50.8 mm/s (0 to 2.0 in/s) peak
• Frequency response: 3 Hz to 1 kHz (180 to 60 kcpm) ±10%
• Output signal: 4-20 mA current loop, proportional to peak vibration
• 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
• Weight: 131 g (4.62 oz) typical

One distinctive feature is the transverse sensitivity of less than 5%, ensuring accurate readings even when vibration occurs off-axis. This reduces measurement error and improves diagnostic reliability.

Applications and Use Cases

This transmitter suits rotating machinery monitoring in industries such as oil and gas, power generation, and manufacturing. It provides continuous vibration data to control systems, enabling condition-based maintenance. For example, in a pump application, the 4-20 mA signal allows the DCS to trigger alarms when vibration exceeds setpoints, preventing unplanned downtime.

Installation and Mounting

Proper installation ensures accurate measurements. The 177230-02-02-05 features a 1/4-28 UNF mounting hole and also supports M6 x 1 SI and M8 x 1.25 SI 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 the specified mounted resonant frequency of greater than 12 kHz.

Maintenance and Reliability

With a hermetically sealed sensor and 316L stainless steel case, the 177230-02-02-05 withstands harsh conditions, including 100% non-submerged humidity. Its solid-state design requires minimal maintenance. Periodically verify the output signal and check the connector for corrosion or damage. The sensor's shock survivability of 9.810 m/s² (1.000 g peak) ensures it remains operational after typical handling.

Compatibility and Integration

The 4-20 mA output simplifies integration with most industrial control systems. It is designed for use with PLCs, DCS, and SCADA systems that have internal power supplies current-limited in the range of 30 mA to 35 mA. The three-pin connector provides a positive loop, loop return, and a dynamic acceleration signal for additional diagnostic capability.

Frequently Asked Questions

What is the measurement range of the 177230-02-02-05?

The measurement range is 0 to 50.8 mm/s (0 to 2.0 in/s) peak.

What output signal does this transmitter provide?

It provides a 4-20 mA current loop signal proportional to peak vibration.

What is the operating temperature range?

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

What approvals does the 177230-02-02-05 hold?

It holds multiple approvals including CSA/NRTL/C and ATEX/IECEx.

Product Support and Availability

The 177230-02-02-05 is available through Petro Auto Tech, your trusted industrial automation parts supplier. Contact us to verify current lifecycle status and availability before ordering. Our team can assist with technical questions and ensure you receive the right product for your application.