177230-00-01-CN | Bently Nevada 0-12.7 mm/s Seismic Transmitter

Why Choose the Bently Nevada 177230-00-01-CN Seismic Transmitter?

When unplanned downtime threatens your production line, the 177230-00-01-CN from Bently Nevada provides the early warning you need. This seismic transmitter converts vibration into a standard 4-20 mA signal, enabling continuous condition monitoring without complex setup. Designed for harsh industrial environments, it helps you detect bearing wear, imbalance, and misalignment before they cause costly failures.

Key Features and Technical Specifications

• Measurement Range: 0 to 12.7 mm/s (0 to 0.5 in/s) RMS, ideal for general-purpose vibration monitoring.
• Frequency Response: 10 Hz to 1 kHz (600 to 60 kcpm) ±10%, capturing the most relevant machine vibration frequencies.
• Output Signal: 4-20 mA current loop, proportional to RMS vibration levels, with 4 mA at 0 mm/s and 20 mA at full scale.
• Excitation Voltage: 12 to 30 Vdc, current limited to 40 mA, compatible with typical PLC/DCS/SCADA power supplies.
• Environmental Robustness: Operating temperature from -40°C to +85°C, 100% non-submerged humidity tolerance.
• Construction: 316L stainless steel case and connector, hermetically sealed sensor, and 1/4-28 UNF mounting hole.
• Weight: 131 g (4.62 oz), compact and lightweight for easy installation.

The 177230-00-01-CN stands out with its mounted resonant frequency greater than 12 kHz, ensuring accurate readings even in high-frequency vibration environments. Its ceramic/shear sensing element provides stability and longevity.

Applications and Use Cases

This transmitter is engineered for rotating machinery such as pumps, fans, motors, and gearboxes. It seamlessly integrates with existing control systems, making it a versatile choice for predictive maintenance programs. For example, in a paper mill, the 177230-00-01-CN can monitor dryer roll bearings, alerting operators to developing faults. Its rugged design suits both indoor and outdoor installations, even in humid conditions.

Installation and Setup

Mount the transmitter using the 1/4-28 UNF hole or optional M6 x 1 SI / 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 proper coupling. Connect Pin A to the 4-20 mA positive loop and Pin B to the loop return; Pin C provides an unbuffered dynamic acceleration signal. The settling time is less than 15 seconds to within 2% of final value, so allow a brief stabilization period after power-up.

Maintenance and Reliability

With no moving parts and a hermetically sealed sensor, the 177230-00-01-CN requires minimal upkeep. Periodically inspect the mounting integrity and connector condition, especially in high-vibration or corrosive environments. Its 316L stainless steel construction resists corrosion, extending service life and reducing replacement costs. Regular verification of the 4-20 mA loop output against a known vibration source ensures continued accuracy.

Compatibility and Integration

The 4-20 mA output is universally accepted by PLCs, DCS, and SCADA systems. The transmitter operates with excitation voltages from 12 to 30 Vdc, making it easy to integrate into existing loops. Its low current consumption (40 mA max) suits systems with current-limited supplies. For new installations, the 177230-00-01-CN simplifies wiring with a standard 3-pin MIL-C-5015 connector.

Frequently Asked Questions

Q: What is the measurement range of the 177230-00-01-CN?

A: The measurement range is 0 to 12.7 mm/s (0 to 0.5 in/s) RMS, with a frequency response of 10 Hz to 1 kHz.

Q: How does the transmitter output its signal?

A: It provides a 4-20 mA current loop output proportional to RMS vibration, with 4 mA at zero and 20 mA at full scale.

Q: Can the 177230-00-01-CN withstand harsh environments?

A: Yes, it operates from -40°C to +85°C and tolerates 100% non-submerged humidity. The 316L stainless steel case ensures durability.

Q: What power supply is required?

A: It requires 12 to 30 Vdc excitation, current limited to 40 mA, compatible with typical PLC/DCS/SCADA supplies.

Q: How should the transmitter be mounted?

A: Use the 1/4-28 UNF hole or M6/M8 threads, with a mounting torque of 4 to 7 N-m (35.4 to 62.0 in-lbf).

Availability and Support

The 177230-00-01-CN is available through Petro Auto Tech. Contact our team for current pricing and lead times. We provide expert support to help you integrate this transmitter into your monitoring system.