Bently Nevada 177230-00-02-05 Seismic Transmitter

Product Introduction

The Bently Nevada 177230-00-02-05 is a seismic transmitter engineered for continuous vibration monitoring of industrial machinery. It provides a 4-20 mA current loop output proportional to peak vibration levels and an additional dynamic acceleration signal for diagnostic use. The 177230-00-02-05 is manufactured in the U.S.A. with a 316L stainless steel case and a hermetically sealed sensor for long-term reliability.

Technical Parameters

• Measurement Range: 0 to 12.7 mm/s (0 to 0.5 in/s) peak
• Frequency Response: 3 Hz to 1 kHz (180 cpm to 60 kcpm) ±10%
• Output Signal: 4 to 20 mA current loop from Pin A to Pin B; dynamic acceleration signal on Pin C
• Excitation Voltage: 12 to 30 Vdc (current limited to 40 mA)
• Operating Temperature: -40°C to +85°C (-40°F to +185°F)
• Enclosure: 316L stainless steel; 25.4 mm diameter, 66.0 mm height
• Connector: 3-pin MIL-C-5015, 316L stainless steel
• Approvals: Multiple Approvals (CSA/NRTL/C, ATEX/IECEx)
• Weight: 131 g (4.62 oz) typical

Parameter Analysis

The 0 to 12.7 mm/s full-scale range is well suited for machinery vibration velocity monitoring. The 3 Hz to 1 kHz frequency response covers common rotating machinery excitation frequencies, and the output is proportional to peak vibration levels. A settling time of less than 15 seconds within 2% of final value enables stable readings, while the 4-20 mA loop simplifies direct connection to PLC, DCS, and SCADA systems.

Application Scenarios

Typical applications include turbines, compressors, pumps, and other rotating machinery where continuous vibration monitoring is required. Because the 177230-00-02-05 is intended for use with PLCs, DCS, and SCADA systems with current-limited internal power supplies, it can be integrated into new or existing condition monitoring architectures.

Installation Guide

Mount the transmitter using the 1/4-28 UNF mounting hole in the body; compatible mounting threads include M6 x 1 SI, M8 x 1.25 SI, and ¼-28 UNF. Apply a mounting torque of 4 to 7 N-m (35.4 to 62.0 in-lbf). Wire Pin A to the 4-20 mA positive loop, Pin B to the 4-20 mA loop return, and Pin C for the dynamic acceleration signal. Ensure the excitation supply is 12 to 30 Vdc and current limited to 40 mA.

Compatibility

This seismic transmitter is designed for use with PLCs, DCS, and SCADA systems that have internal power supplies typically current limited in the range of 30 mA to 35 mA. It carries multiple approvals including CSA/NRTL/C and ATEX/IECEx, supporting installation in a range of industrial environments.

Maintenance Advice

The transmitter is hermetically sealed and rated for relative humidity up to 100% non-submerged. Periodically check mounting torque, connector integrity, and loop calibration to ensure reliable operation. Avoid exposing the unit to submersion or impact beyond the specified drop test survivability of 9.810 m/s² (1.000 g peak) maximum.

Procurement Advice

When sourcing the Bently Nevada 177230-00-02-05, verify the full model number and approvals suffix to match your application requirements. Purchase from an authorized Bently Nevada channel to ensure genuine product, correct documentation, and factory-supported service.

FAQ

What is the output of the 177230-00-02-05? The transmitter provides a 4 to 20 mA current loop from Pin A to Pin B, with a dynamic acceleration signal on Pin C referenced to Pin B.

What power supply is required? Excitation voltage is 12 to 30 Vdc, current limited to 40 mA. Typical PLC, DCS, and SCADA internal supplies are current limited to 30 to 35 mA.

What measurement range is available? The full-scale range is 0 to 12.7 mm/s (0 to 0.5 in/s) peak, with 4 ± 0.3 mA equal to 0.0 mm/s and 20 ± 2 mA equal to full scale.

What frequency response does it have? Frequency response is 3 Hz to 1 kHz (180 cpm to 60 kcpm) ±10%; the output signal is proportional to peak vibration levels.

What approvals are included? The 177230-00-02-05 carries Multiple Approvals: CSA/NRTL/C and ATEX/IECEx.