181M6049 | Bently Nevada Dual Output Sensor 100 mV/g

Why Choose the Bently Nevada 181M6049 Dual Output Sensor?

When your rotating machinery demands reliable vibration and temperature monitoring, the 181M6049 from Bently Nevada provides a robust solution. This dual output sensor combines accelerometer and temperature sensing in one hermetically sealed package, reducing installation complexity and improving data accuracy.

With a sensitivity of 100 mV/g and a wide frequency response, the 181M6049 captures critical vibration signatures across a broad spectrum. Its integrated temperature sensor delivers continuous thermal data, helping you detect bearing wear or lubrication issues before they escalate.

Key Features and Technical Specifications

• Dynamic Sensitivity: 100 mV/g ±5% at 25°C
• Acceleration Range: 60 g peak
• Amplitude Nonlinearity: 1%
• Frequency Response: ±5% from 3 to 5,000 Hz; ±10% from 1 to 7,000 Hz; ±3 dB from 0.5 to 12,000 Hz
• Resonant Frequency: 30 kHz
• Temperature Sensor Output: 10 mV/°C, measurement range 2° to 120°C
• Voltage Source: 18-28 Vdc
• Current Regulating Diode: 2-10 mA
• Output Impedance: 100 Ω max
• Bias Output Voltage: 12 Vdc
• Temperature Range: -50°C to +120°C
• Vibration Limit: 500 g peak
• Shock Limit: 5,000 g peak
• Sealing: Hermetic
• Weight: 90 grams
• Case Material: 316L Stainless Steel
• Mounting: ¼-28 UNF tapped hole
• Connector: 3-pin MIL-C-5015 style

The 181M6049 features a case-isolated, internally shielded design, minimizing electrical interference and ensuring signal integrity. Its PZT ceramic shear sensing element provides stable performance over a wide temperature range.

Real-World Applications

In industrial plants, the 181M6049 excels at monitoring pumps, motors, fans, and compressors. By combining vibration and temperature data, you gain a comprehensive view of equipment health, enabling predictive maintenance strategies that reduce unplanned downtime.

For example, on a critical cooling fan, the sensor's wide frequency response catches both low-speed imbalance and high-frequency bearing faults. The temperature channel alerts operators to overheating, allowing timely intervention.

Installation and Setup

Mount the 181M6049 using the ¼-28 UNF tapped hole, ensuring a clean and flat surface for optimal coupling. Use the recommended cabling options: 16925-XX without armor or 16710-XX with armor, depending on your environmental requirements.

Wire the connector as follows: Shell connects to ground/case, Pin A carries accelerometer power/signal, Pin B is common for accelerometer and temperature sensor, and Pin C carries the temperature sensor signal. Always follow the manufacturer's manual for detailed installation guidance.

Maintenance and Reliability

Thanks to its hermetic sealing and 316L stainless steel construction, the 181M6049 withstands harsh industrial conditions. Its robust design minimizes maintenance needs, but periodic inspection of the cable and connector is recommended to ensure reliable operation.

With a temperature range of -50°C to +120°C and a shock limit of 5,000 g peak, this sensor delivers long-term reliability in demanding environments, reducing total cost of ownership.

Compatibility and Integration

The 181M6049 is designed for use with Bently Nevada monitoring systems. Its standard 3-pin MIL-C-5015 connector and 2-10 mA current regulating diode ensure compatibility with typical signal conditioning equipment. For specific integration details, consult the official Bently Nevada documentation.

Frequently Asked Questions

Q: What is the frequency response of the 181M6049?

A: The sensor provides ±5% response from 3 to 5,000 Hz, ±10% from 1 to 7,000 Hz, and ±3 dB from 0.5 to 12,000 Hz.

Q: What is the temperature measurement range?

A: The temperature sensor measures from 2° to 120°C with an output of 10 mV/°C.

Q: What is the supply voltage requirement?

A: The 181M6049 requires a voltage source of 18-28 Vdc and a current regulating diode of 2-10 mA.

Q: Is the sensor hermetically sealed?

A: Yes, the 181M6049 is hermetically sealed and rated for vibration up to 500 g peak and shock up to 5,000 g peak.

Product Support and Availability

The Bently Nevada 181M6049 is available through Petro Auto Tech. Contact our team for current availability and lead times. We are ready to support your industrial monitoring needs.