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

Introduction to the Bently Nevada 177230-01-01-CN

When machine vibration threatens uptime, the 177230-01-01-CN from Bently Nevada provides a reliable measurement solution. This seismic transmitter converts vibration levels into a standard 4-20 mA current loop signal. It is designed for integration with PLCs, DCS, and SCADA systems that have internal power supplies. The transmitter is manufactured in the U.S.A. and offers a compact, rugged form factor.

Key Features and Technical Specifications

The 177230-01-01-CN is engineered for accurate vibration monitoring. Its key specifications include:

• Measurement Range: 0 – 25.4 mm/s (0 – 1.0 in/s) RMS.
• Frequency Response: 10 Hz to 1 kHz (600 to 60 kcpm) ±10%.
• Output Signal: 4-20 mA current loop from Pin A to Pin B.
• Sensitivity (Main Loop): 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.
• Sensing Element: Ceramic / shear type.
• 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.
• Shock Survivability: 9.810 m/s² (1.000 g peak), maximum drop test.

The transmitter's output is proportional to RMS vibration levels, providing a stable and repeatable signal for condition monitoring.

Applications and Use Cases

This seismic transmitter is suitable for rotating machinery monitoring in various industries. It can be used in fans, pumps, motors, and other equipment where vibration indicates mechanical health. The 4-20 mA output simplifies integration with existing control systems. For example, in a continuous process plant, the transmitter helps detect imbalance or bearing wear early. Consequently, maintenance teams can schedule repairs before catastrophic failure occurs.

Installation and Setup

Mounting the 177230-01-01-CN requires attention to the specified torque. The recommended mounting torque is 4 to 7 N-m (35.4 to 62.0 in-lbf). The transmitter offers multiple mounting thread options: M6 x 1 SI, M8 x 1.25 SI, and 1/4-28 UNF. Ensure the mounting surface is clean and flat for accurate readings. The connector wiring convention is straightforward: Pin A is the 4-20 mA positive loop, Pin B is the loop return, and Pin C provides a dynamic acceleration signal. Always follow the manufacturer's manual for detailed wiring instructions.

Maintenance and Reliability

Because the transmitter is hermetically sealed, it requires minimal maintenance. The 316L stainless steel case provides excellent corrosion resistance. The unit operates reliably in harsh environments, including high humidity conditions up to 100% non-submerged. Periodic inspection of the mounting integrity and connector condition is recommended. This helps ensure long-term accuracy and prevents loose connections.

Compatibility and Integration

The 177230-01-01-CN is specifically designed for use with PLCs, DCS, and SCADA systems. It requires an internal power supply that is typically current limited between 30 mA and 35 mA. The 4-20 mA output is universally accepted by most control systems. This compatibility simplifies retrofits and new installations alike.

FAQ about the 177230-01-01-CN

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

A: The measurement range is 0 – 25.4 mm/s (0 – 1.0 in/s) RMS.

Q: What output signal does this transmitter provide?

A: It provides a 4-20 mA current loop signal 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: Can this transmitter be used in high humidity environments?

A: Yes, it can operate in relative humidity up to 100% non-submerged.

Q: What mounting options are available?

A: Mounting threads include M6 x 1 SI, M8 x 1.25 SI, and 1/4-28 UNF.

Support and Availability

The 177230-01-01-CN is available through Petro Auto Tech. Contact our team for current pricing and lead times. We are a trusted supplier of industrial automation parts.