177230-00-02-05 | Bently Nevada 0-12.7 mm/s Seismic Transmitter

177230-00-02-05 Seismic Transmitter Overview

When machine vibration threatens uptime, the 177230-00-02-05 from Bently Nevada provides a reliable, loop-powered solution. This seismic transmitter converts dynamic acceleration into a standard 4-20 mA signal, enabling continuous condition monitoring without complex external signal conditioning.

Engineered for harsh industrial environments, the 177230-00-02-05 features a rugged 316L stainless steel case and a hermetically sealed sensor. Its compact size and multiple mounting options simplify installation on rotating equipment, pumps, fans, and compressors.

Key Features and Technical Specifications

• Measurement range: 0 to 12.7 mm/s (0 to 0.5 in/s) peak, with ±10% accuracy.
• Frequency response: 3 Hz to 1 kHz (180 to 60 kcpm) peak, ±10%.
• Output: 4-20 mA current loop, proportional to peak vibration levels.
• 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.
• Sensing element: ceramic / shear type.
• Operating temperature: -40°C to +85°C (-40°F to +185°F).
• Electrical isolation: greater than 108 ohms; breakdown voltage 600 Vrms with less than 1 mA leakage.
• Shock survivability: 9,810 m/s² (1,000 g peak) maximum drop test.
• Magnetic field sensitivity: less than 20 μm/s/gauss (790 μin/s/gauss) peak.
• Relative humidity: up to 100% non-submerged.

One standout feature is the hermetically sealed sensor, which protects against moisture and contaminants, extending service life in humid or washdown environments.

Buyer's Guide: Evaluating the 177230-00-02-05

When selecting a vibration transmitter, consider the following factors:

• Measurement range: The 0-12.7 mm/s range suits most industrial rotating machinery.
• Frequency response: 3 Hz to 1 kHz covers common machine vibration frequencies.
• Output signal: 4-20 mA loop integrates directly with PLC, DCS, and SCADA analog inputs.
• Environmental durability: 316L stainless steel and hermetic sealing ensure reliability in harsh conditions.
• Mounting flexibility: ¼-28 UNF, M6, and M8 threads offer installation versatility.

This transmitter is designed for use with PLCs, DCS, and SCADA systems that have internal power supplies typically current limited to 30-35 mA. Verify your system's power supply meets the 12-30 Vdc excitation requirement.

Installation and Setup

Mount the 177230-00-02-05 securely using the provided ¼-28 UNF hole or M6/M8 threads. Apply a mounting torque of 4 to 7 N-m (35.4 to 62.0 in-lbf) to ensure proper coupling. Wire Pin A to the positive loop and Pin B to the loop return. Pin C provides an unbuffered dynamic acceleration signal referenced to Pin B.

After installation, allow the transmitter to settle for less than 15 seconds before taking readings. Verify the output current at zero vibration (4 ± 0.3 mA) and at full scale (20 ± 2 mA) to confirm correct operation.

Maintenance and Reliability

Routine inspection of the mounting integrity and connector condition helps maintain measurement accuracy. Because the sensor is hermetically sealed, it requires no internal maintenance. Periodically check the cable and connector for damage, and ensure the mounting torque remains within specification.

The 316L stainless steel case resists corrosion, making the transmitter suitable for humid and washdown environments. With no moving parts, the 177230-00-02-05 offers long-term reliability and minimal downtime.

Compatibility and Integration

The 4-20 mA output is universally compatible with most PLC, DCS, and SCADA analog input modules. The dynamic acceleration signal on Pin C can be used for additional diagnostics if your system supports it. This transmitter is not network-enabled; it provides a direct analog interface.

Common Questions About the 177230-00-02-05

What is the measurement range of the 177230-00-02-05?

The measurement range is 0 to 12.7 mm/s (0 to 0.5 in/s) peak, with ±10% accuracy.

What output signal does this transmitter provide?

It provides a 4-20 mA current loop proportional to peak vibration levels, from Pin A to Pin B.

What power supply is required?

Excitation voltage is 12 to 30 Vdc, current limited to 40 mA. It is designed for PLC, DCS, and SCADA systems with internal power supplies typically current limited to 30-35 mA.

Can it be used in hazardous areas?

The 177230-00-02-05 has multiple approvals including CSA/NRTL/C and ATEX/IECEx, making it suitable for many hazardous locations. Verify your specific area classification.

What is the operating temperature range?

It operates from -40°C to +85°C (-40°F to +185°F).

Product Support and Availability

Contact Petro Auto Tech for current availability and pricing of the 177230-00-02-05. Our team can assist with technical questions and ensure you receive the right vibration monitoring solution.