190501-11-00-00 | Bently Nevada Velomitor CT Velocity Transducer

Introduction to the Bently Nevada 190501-11-00-00

When machinery vibration threatens uptime, the 190501-11-00-00 from Bently Nevada provides a dependable measurement solution. This Velomitor CT velocity transducer converts mechanical motion into a precise electrical signal, enabling condition monitoring teams to detect developing faults early. With a sensitivity of 3.94 mV/mm/s (±5%), it delivers consistent output for predictive maintenance programs.

Designed for industrial environments, the 190501-11-00-00 features a 316L stainless steel case and a 2-pin MIL-C-5015 connector. Its compact 82 mm height and 33 mm mounting surface fit easily into existing machinery layouts. The unit weighs only 0.297 kg, minimizing added stress on rotating equipment.

Key Features and Technical Specifications

The 190501-11-00-00 offers several performance characteristics that support accurate vibration analysis:

• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5% ensures consistent output.
• 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.
• 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).
• Mounted Resonant Frequency: 9 kHz minimum (stud mounted, except quick disconnect).
• Operating Temperature: -40°C to +85°C (-40°F to +185°F).
• Shock Limit: 5000 g pk maximum.
• Humidity Limit: 100% condensing, non-submerged.

These specs make the 190501-11-00-00 suitable for continuous monitoring in harsh conditions. The internal electronics are isolated from the case, reducing ground loop interference. Maximum cable length is 305 metres (1,000 ft.) with part number 02173006, allowing flexible installation.

Applications and Use Cases

Maintenance engineers rely on the 190501-11-00-00 for rotating machinery such as pumps, fans, compressors, and motors. Its wide frequency range captures both low-speed and high-speed vibration signatures. For example, in a paper mill, the transducer can monitor dryer roll bearings, where early detection of imbalance prevents costly downtime. Similarly, in petrochemical plants, it tracks centrifugal pump vibration to schedule maintenance before failure.

Because the transducer operates from -40°C to +85°C, it suits outdoor or unheated equipment. The 100% condensing humidity rating allows use in washdown areas or coastal environments. Its any-orientation mounting simplifies installation on existing bearing housings.

Installation and Setup

Proper mounting is critical for accurate readings. The 190501-11-00-00 comes with a plate stud option (3/8-in 24 to 1/4-in 28) for secure attachment. Apply the recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf) to ensure consistent coupling. The transducer can be mounted in any orientation, making it versatile for tight spaces.

Connect the 2-pin MIL-C-5015 connector, ensuring Pin A is referenced to Pin B. The polarity is defined: Pin A goes positive with respect to Pin B when velocity is from base to top. For best signal integrity, use the specified cable (part number 02173006) up to 305 metres without degradation. Verify that the mounting surface is clean and flat to avoid strain on the base.

Maintenance and Reliability

Routine inspection of the 190501-11-00-00 helps maintain long-term accuracy. Periodically check the connector for corrosion or loose fit, especially in humid environments. The 316L stainless steel case resists corrosion, but the connector area should be kept clean. Because the transducer has no moving parts, it offers high reliability with minimal upkeep.

Temperature sensitivity varies from -8% to +5% over the operating range, so recalibration may be needed if the machine runs at extreme temperatures. The shock limit of 5000 g pk protects against transient impacts, but avoid dropping the unit during installation. Regular verification of output bias voltage (10.1 Vdc ± 1.0 Vdc) can indicate internal health.

Compatibility and Integration

The 190501-11-00-00 is designed to work with Bently Nevada monitoring systems, but it can also interface with third-party data acquisition equipment that accepts standard velocity transducer signals. Its low output impedance (<400 Ω) allows long cable runs without signal loss. The internal grounding isolation prevents ground loops, simplifying integration into existing monitoring networks.

For hazardous area installations, note that this unit has agency approval option 00 (no approvals). If intrinsic safety is required, consult Bently Nevada for models with Ex ia IIC T4 approvals (options 01–04). Always verify compatibility with your specific monitoring system before ordering.

Troubleshooting Common Issues

If the 190501-11-00-00 shows erratic readings, first check the mounting torque and surface condition. Loose mounting can cause spurious signals. Also inspect the cable for damage, especially at the connector. A high output bias voltage may indicate internal damage; compare it to the 10.1 Vdc ± 1.0 Vdc specification.

Excessive noise in the signal could be due to electromagnetic interference. The magnetic field susceptibility is <0.0068 mm/s/gauss (0.268 mil/s/gauss) @ 50 gauss, 50-60Hz, so keep the cable away from high-current lines. If problems persist, refer to the official Bently Nevada manual or contact Petro Auto Tech for technical support.

Frequently Asked Questions

Q: What is the sensitivity of the 190501-11-00-00?

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

Q: What is the operating temperature range?

A: It operates from -40°C to +85°C (-40°F to +185°F).

Q: Can the 190501-11-00-00 be used in hazardous areas?

A: This unit (option 00) has no agency approvals. For intrinsically safe versions, select options 01–04.

Q: What is the maximum cable length?

A: Up to 305 metres (1,000 ft.) with cable part number 02173006.

Q: How do I mount the transducer?

A: Use the plate stud (3/8-in 24 to 1/4-in 28) and torque to 4.5 N-m ± 0.6 N-m.

Product Support and Availability

The 190501-11-00-00 is available through Petro Auto Tech. We stock this transducer and can provide fast shipping. For lifecycle status or technical questions, contact our team. We are committed to helping you maintain reliable machinery monitoring.