190501-08-00-00 | Bently Nevada 3.94 mV/mm/s Velocity Transducer

Introduction to the Bently Nevada 190501-08-00-00

When machine vibration threatens uptime, the 190501-08-00-00 from Bently Nevada provides accurate, continuous monitoring. This Velomitor CT velocity transducer is engineered for industrial environments where precision and durability are non-negotiable. With a sensitivity of 3.94 mV/mm/s (±5%), it converts mechanical velocity into a clear electrical signal, enabling early detection of bearing wear, imbalance, or misalignment.

Choosing the right transducer directly impacts maintenance costs. The 190501-08-00-00 helps avoid unplanned downtime by delivering consistent data, allowing you to schedule repairs only when needed. This proactive approach reduces both labor and replacement expenses over the equipment's life.

Key Features and Technical Specifications

• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5% — ensures accurate velocity measurement.
• Frequency Response: 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB; 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB — covers typical machine vibration ranges.
• Temperature Sensitivity: -8% to +5% typical over operating temperature range — maintains accuracy across environments.
• Transverse Response: Less than 5% of axial sensitivity — minimizes cross-axis errors.
• Amplitude Linearity: ±2% to 63.5 mm/s pk (2.5 in/s pk) — reliable over a wide range.
• Mounted Resonant Frequency: 9 kHz minimum (stud mounted, except quick disconnect) — avoids resonance interference.
• Output Bias Voltage: 10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B — stable signal baseline.
• Dynamic Output Impedance: <400 Ω typical — drives long cable runs.
• Broadband Noise: 0.229 mm/s (0.009 in/s) pk — low noise for clear signals.
• Base Strain Sensitivity: 0.43 mm/s/μstrain (0.017 in/s/μstrain) — reduces false readings.
• Grounding: Internal electronics isolated from case — prevents ground loops.
• Maximum Cable Length: 305 metres (1,000 ft.) of cable (part number 02173006) with no signal degradation — flexible installation.

These specs translate directly to cost efficiency. For instance, the low base strain sensitivity reduces false alarms, saving time and money on unnecessary inspections. The long cable allowance means you can place the transducer far from the monitoring unit without extra signal conditioning, cutting installation costs.

Applications and Use Cases

The 190501-08-00-00 is ideal for rotating machinery such as pumps, fans, compressors, and turbines. In these applications, continuous vibration monitoring helps detect developing faults before they cause catastrophic failure. Consequently, you avoid costly emergency repairs and production losses.

For example, in a chemical plant, a slight imbalance in a cooling fan could escalate into bearing failure. By using this transducer, maintenance teams receive early warnings, allowing planned shutdowns instead of forced outages. This proactive strategy lowers overall maintenance expenditure and extends machinery life.

Installation and Setup

Mounting the 190501-08-00-00 is straightforward. The mounting hardware option 08 uses a plate stud 3/8-in 24 to 1/2-in 20, ensuring a secure fit. Apply the recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf) to guarantee proper coupling. The transducer can be mounted in any orientation, offering flexibility in tight spaces.

The connection option 00 uses a MIL-C-5015 interface, a standard industrial connector that simplifies wiring. Ensure the cable is routed away from high-temperature surfaces and sharp edges. Following these steps minimizes installation errors and avoids additional rework costs.

Maintenance and Reliability

Routine inspection of the transducer and its mounting is essential. Check that the stud remains tight and the connector is free from corrosion. The 316L stainless steel case and connector provide excellent corrosion resistance, reducing replacement frequency.

Given the operating temperature range of -40°C to +85°C (-40°F to +185°F) and shock limit of 5000 g pk, this unit is built for harsh conditions. Regular verification of output bias voltage (10.1 Vdc ± 1.0 Vdc) ensures the sensor is functioning correctly. This simple check can prevent undetected failures, saving significant diagnostic costs.

Compatibility and Integration

The 190501-08-00-00 is designed to work with Bently Nevada monitoring systems. Its standard MIL-C-5015 connector and 305-meter cable capability allow integration into existing setups with minimal modifications. The internal electronics are isolated from the case, reducing noise interference and ensuring clean signals to your data acquisition system.

Before integrating, verify that your monitoring system accepts the sensitivity and bias voltage specifications. This compatibility check avoids mismatched components, which could lead to inaccurate readings and unnecessary troubleshooting expenses.

FAQs about the 190501-08-00-00

What is the sensitivity of the 190501-08-00-00?

The sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5%.

What is the maximum cable length for this transducer?

Up to 305 metres (1,000 ft.) of cable (part number 02173006) can be used without signal degradation.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C (-40°F to +185°F).

Is the 190501-08-00-00 intrinsically safe?

This specific configuration (option 00) has no agency approvals. For intrinsically safe versions, refer to options 01 through 04.

What mounting hardware is included?

Option 08 provides a plate stud 3/8-in 24 to 1/2-in 20.

Product Support and Availability

The 190501-08-00-00 is available from Petro Auto Tech, an industrial automation parts supplier. Contact Petro Auto Tech to confirm current stock and lead times. Their team can assist with technical questions and ensure you receive the correct transducer for your application.