177230-02-01-05 | Bently Nevada Seismic Transmitter 0-50.8 mm/s

Why Choose the Bently Nevada 177230-02-01-05 Seismic Transmitter?

When machinery vibration threatens uptime, the 177230-02-01-05 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 PLCs, DCS, and SCADA systems. Its robust design and multiple approvals ensure it meets demanding industrial requirements.

For engineers evaluating vibration monitoring options, this transmitter offers a compact, hermetically sealed package with a measurement range of 0 to 50.8 mm/s (0 to 2.0 in/s). It operates across a frequency range of 10 Hz to 1 kHz (600 to 60 kcpm) RMS, capturing the vibration data needed for predictive maintenance and machine protection.

Key Features and Technical Specifications

• Measurement Range: 0 – 50.8 mm/s (0 – 2.0 in/s)
• Frequency Range: 10 Hz to 1 kHz (600 to 60 kcpm) RMS
• 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
• Case Material: 316L stainless steel
• Connector: 3-pin MIL-C-5015, 316L stainless steel
• Mounting Hole: 1/4-28 UNF
• Weight: 0.131 kg (4.62 oz)
• Operating Temperature: -40°C to +85°C (-40°F to +185°F)
• Relative Humidity: To 100% non-submerged
• Approvals: Multiple Approvals (CSA/NRTL/C, ATEX/IECEx)

One standout specification is the hermetically sealed sensor, which protects against moisture and contaminants, ensuring long-term reliability even in harsh environments. Additionally, the magnetic field sensitivity is less than 20 μm/s/gauss (790 μin/s/gauss) peak, minimizing interference from nearby electrical equipment.

Applications and Use Cases

This transmitter is ideal for monitoring rotating machinery such as pumps, motors, fans, and compressors. Its 4-20 mA output simplifies connection to existing control systems, enabling continuous vibration monitoring without specialized hardware. For example, in a chemical plant, the 177230-02-01-05 can be installed on a cooling tower fan to detect bearing wear early, reducing unplanned downtime. Additionally, its ATEX/IECEx approvals make it suitable for potentially explosive atmospheres, expanding its use in oil and gas facilities.

Installation and Setup Guide

Mounting the 177230-02-01-05 is straightforward. The unit features a 1/4-28 UNF mounting hole and optional M6 x 1 SI or M8 x 1.25 SI threads. Apply a mounting torque of 4 to 7 N-m (35.4 to 62.0 in-lbf) to ensure a secure fit. The 3-pin MIL-C-5015 connector simplifies wiring: Pin A carries the 4-20 mA positive loop, Pin B is the loop return, and Pin C provides an unbuffered dynamic acceleration signal. Always verify that the excitation voltage is within the specified 12 to 30 Vdc range and that the power supply is current-limited to 40 mA.

Maintenance and Reliability

Because the sensor is hermetically sealed, routine maintenance is minimal. Periodically inspect the mounting integrity and connector condition to prevent loosening or corrosion. The 316L stainless steel case withstands harsh chemicals and washdowns, while the operating temperature range of -40°C to +85°C ensures performance in extreme climates. With a settling time of less than 15 seconds, the transmitter quickly provides stable readings after power-up, reducing commissioning time.

Compatibility and Integration

Designed for use with PLCs, DCS, and SCADA systems, the 177230-02-01-05 outputs a standard 4-20 mA signal that most control systems accept directly. It requires an internal power supply typically current-limited to 30-35 mA, which matches the transmitter's 40 mA limit. This compatibility makes it a drop-in solution for new installations or retrofits.

Buyer's Guide: Evaluating the 177230-02-01-05

When selecting a seismic transmitter, consider the measurement range, frequency response, and environmental ratings. The 177230-02-01-05 covers 0-50.8 mm/s and 10 Hz to 1 kHz, suitable for most industrial vibration monitoring. Its multiple approvals (CSA/NRTL/C, ATEX/IECEx) provide confidence for use in hazardous areas. Also, check the full-scale range option (-AA) of 25.4 mm/s (1.0 in/s) ± 10%, which allows customization for specific sensitivity needs.

Frequently Asked Questions

What is the output signal of the 177230-02-01-05?

The transmitter provides a 4-20 mA current loop output from Pin A to Pin B, proportional to vibration levels.

What is the excitation voltage requirement?

It requires 12 to 30 Vdc, with current limited to 40 mA.

Can the 177230-02-01-05 be used in hazardous areas?

Yes, it has multiple approvals including ATEX/IECEx, making it suitable for explosive atmospheres.

What is the mounting thread size?

The standard mounting hole is 1/4-28 UNF, with optional M6 x 1 SI and M8 x 1.25 SI threads.

How does the transmitter handle high humidity?

It is rated for up to 100% relative humidity, non-submerged, thanks to its hermetic seal.

Product Support and Availability

The Bently Nevada 177230-02-01-05 is available through Petro Auto Tech. Contact our team for current stock, pricing, and delivery options. We are ready to support your vibration monitoring needs.