190501-04-00-CN | Bently Nevada 3.94 mV/mm/s Velomitor CT Transducer

Introduction to the Bently Nevada 190501-04-00-CN

When you need dependable vibration monitoring for rotating machinery, the 190501-04-00-CN from Bently Nevada is a proven choice. This Velomitor CT velocity transducer converts mechanical vibration into an electrical signal, allowing you to track machine health accurately. With a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, it provides consistent output for predictive maintenance programs.

Because it is a velocity transducer, it measures the rate of movement, which is directly related to machine severity. This makes it ideal for protecting critical assets like pumps, motors, and fans. The 190501-04-00-CN is manufactured in the U.S.A. and carries the Bently Nevada brand, known for reliability in industrial settings.

Key Features and Technical Specifications

The 190501-04-00-CN is designed with performance in mind. Here are the essential specifications you can rely on:

• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5%.
• 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.
• Temperature Sensitivity: -8% to +5% typical over the operating temperature range.
• Transverse Response: Less than 5% of the axial sensitivity.
• Amplitude Linearity: ±2% to 63.5 mm/s pk (2.5 in/s pk).
• Mounted Resonant Frequency: 9 kHz minimum (stud mounted, except quick disconnect).
• Output Bias Voltage: 10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B.
• Dynamic Output Impedance: <400 Ω typical.
• Broadband Noise: 0.229 mm/s (0.009 in/s) pk.
• Base Strain Sensitivity: 0.43 mm/s/μstrain (0.017 in/s/μstrain).
• Grounding: Internal electronics are isolated from case.
• Maximum Cable Length: 305 metres (1,000 ft.) of cable (part number 02173006) with no degradation of signal.

These specs show that the 190501-04-00-CN is built for accuracy and stability. The low transverse response minimizes errors from cross-axis motion, while the wide frequency range captures both low and high speed vibrations.

Why Choose the 190501-04-00-CN for Your Machinery?

In industrial environments, unplanned downtime is costly. The 190501-04-00-CN helps you avoid that by providing early warning of developing faults. Its rugged design handles harsh conditions, and the sealed stainless steel case protects internal components.

Moreover, the transducer's high resonant frequency ensures that measurements remain accurate even in high-frequency applications. This means you can trust the data for trend analysis and alarm settings. The output bias voltage is stable, so you can connect it to standard monitoring systems without extra signal conditioning.

Installation and Mounting Guidance

Proper installation is critical for accurate readings. The 190501-04-00-CN comes with a stud M6x1 with 3/8-in 24 adapter (mounting hardware option 04). The connection interface is MIL-C-5015 (option 00).

When mounting, ensure the mounting surface is clean and flat. Apply the recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf) to secure the transducer firmly. The transducer can be mounted in any orientation, giving you flexibility in tight spaces.

For electrical connections, Pin A goes positive with respect to Pin B when velocity is from base to top. This polarity is important for correct phase interpretation. Use the specified cable (02173006) for optimal signal integrity, and keep cable length within 305 meters to avoid signal degradation.

Routine Maintenance and Reliability

The 190501-04-00-CN is designed for minimal maintenance. Its 316L stainless steel case resists corrosion, and the internal electronics are isolated from the case, reducing ground loop issues. However, regular inspection is still recommended.

Periodically check the mounting integrity and cable condition. Ensure that the transducer is not subjected to shock beyond its 5000 g pk limit. Also, verify that the operating temperature stays within -40°C to +85°C (-40°F to +185°F). Following these simple steps will help maintain reliable performance over the long term.

Compatibility and Integration

The 190501-04-00-CN is a passive velocity transducer that outputs a voltage proportional to velocity. It is compatible with most vibration monitoring systems that accept standard velocity inputs. The MIL-C-5015 connector is a common industrial standard, making integration straightforward.

Because it is a two-wire device, wiring is simple: connect Pin A and Pin B to your monitor. The output bias voltage of 10.1 Vdc is typical for such transducers, so most systems will recognize the signal without additional interface modules.

Common Questions About the 190501-04-00-CN

Q: What is the sensitivity of the 190501-04-00-CN?

A: The sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5%, which is standard for velocity transducers.

Q: Can I use this transducer in hazardous areas?

A: Yes, the 190501-04-00-CN has intrinsic safety approvals (Ex ia IIC T4, AEx ia IIC T4) for use in Class I, Div 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III. Install per drawing 167536.

Q: What is the maximum cable length?

A: The maximum cable length is 305 meters (1,000 ft.) using cable part number 02173006 without signal degradation.

Q: What is the operating temperature range?

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

Q: How do I mount the transducer?

A: Use the stud M6x1 with 3/8-in 24 adapter and torque to 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf). Any orientation is acceptable.

Availability and Support

The 190501-04-00-CN is available from Petro Auto Tech, your trusted industrial automation parts supplier. We keep this model in stock and ready to ship. Contact our team for pricing and lead times.

For technical support, refer to the official Bently Nevada documentation or reach out to Petro Auto Tech for guidance. We are here to help you keep your machinery running smoothly.