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

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 levels into a standard 4-20 mA current loop signal, making it easy to integrate with existing PLC, DCS, and SCADA systems.

Designed for continuous operation in harsh environments, the 177230-01-02-05 offers a compact, rugged package. Its 316L stainless steel case and hermetically sealed sensor ensure long-term reliability, even in humid or corrosive conditions.

Key Features and Technical Specifications

The 177230-01-02-05 is engineered for precise vibration monitoring. Below are the core specifications from the manufacturer:

• Measurement Range: 0 – 25.4 mm/s (0 – 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)
• Sensitivity: 4 ± 0.3 mA equals 0.0 mm/s; 20 ± 2 mA equals full scale
• 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 standout feature is the 4-20 mA loop output, which simplifies wiring and reduces noise. This output is proportional to peak vibration levels, allowing for direct trend analysis.

Applications and Use Cases

The 177230-01-02-05 is ideal for monitoring rotating machinery such as pumps, fans, and motors. Its 4-20 mA signal is compatible with most industrial control systems, making it a versatile choice for predictive maintenance programs.

In chemical plants or offshore platforms, the transmitter's 316L stainless steel construction and 100% non-submerged humidity rating ensure reliable operation. The multiple approvals (CSA/NRTL/C, ATEX/IECEx) also support use in hazardous areas.

For engineers upgrading legacy vibration sensors, this model offers a direct replacement path with modern signal output.

Installation and Mounting

Proper installation is critical for accurate readings. The 177230-01-02-05 features a 1/4-28 UNF mounting hole and optional M6 or M8 threads. Recommended mounting torque is 4 to 7 N-m (35.4 to 62.0 in-lbf).

Mount the transmitter on a flat, clean surface to avoid measurement errors. Ensure the connector is properly torqued to maintain the hermetic seal. For best results, follow the manufacturer's installation manual.

Maintenance and Reliability

With no moving parts, the 177230-01-02-05 requires minimal maintenance. Periodic inspection of the mounting and connector is recommended to ensure long-term performance.

The hermetically sealed sensor protects against moisture and contamination, reducing the risk of drift. This reliability translates into lower maintenance costs and reduced downtime.

Compatibility and Integration

The 4-20 mA output makes the 177230-01-02-05 compatible with most PLCs, DCS, and SCADA systems. It is designed to work with internal power supplies that are typically current limited to 30-35 mA.

For dynamic vibration analysis, the transmitter also provides an unbuffered acceleration signal on Pin C, referenced to Pin B. This allows for additional diagnostic capabilities.

FAQ

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

A: The measurement range is 0 – 25.4 mm/s (0 – 1.0 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: Is the 177230-01-02-05 suitable for hazardous areas?

A: Yes, it has multiple approvals including CSA/NRTL/C and ATEX/IECEx.

Q: What is the excitation voltage requirement?

A: The excitation voltage is 12 to 30 Vdc, with current limited to 40 mA.

Product Support and Availability

The Bently Nevada 177230-01-02-05 is available through Petro Auto Tech. Contact our team for current pricing and lead times. We are ready to help you integrate this reliable seismic transmitter into your monitoring system.