190501-11-00-00 | Bently Nevada 3.94 mV/mm/s Velocity Transducer

Introduction to the 190501-11-00-00 Velomitor CT

When rotating machinery vibrates unexpectedly, the 190501-11-00-00 from Bently Nevada provides the accurate velocity measurements you need. This Velomitor CT velocity transducer is engineered for industrial condition monitoring, offering reliable performance in demanding environments.

With a sensitivity of 3.94 mV/mm/s (±5%), this transducer converts mechanical vibration into an electrical signal that control systems can interpret. Its robust 316L stainless steel case ensures durability, while the MIL-C-5015 connection interface simplifies installation.

Key Features and Technical Specifications

• 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; extends to 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.
• Operating Temperature: -40°C to +85°C (-40°F to +185°F).
• Shock Limit: 5000 g pk, maximum.
• Case Material: 316L stainless steel.
• Mounting Torque: 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf).

One distinctive spec is the frequency response starting at 3.0 Hz. This low-frequency capability is essential for detecting slow-speed machinery issues, such as imbalance or misalignment, before they escalate into costly failures.

Real-World Applications

In pump applications, the transducer’s frequency response from 3.0 Hz upward captures both low-speed and operational vibrations, enabling early fault detection. Similarly, for fans and compressors, the 190501-11-00-00 helps maintenance teams monitor bearing health and rotor stability. Its wide operating temperature range makes it suitable for outdoor or unheated installations, while the sealed construction resists humidity and condensation.

Installation and Setup

Mount the transducer using the provided plate stud (3/8-in 24 to 1/4-in 28) and tighten to the specified torque of 4.5 N-m ± 0.6 N-m. The MIL-C-5015 connector ensures a secure, weatherproof connection. For best results, mount the transducer in any orientation, as its design allows. Ensure the mounting surface is clean and flat to achieve the specified mounted resonant frequency of 9 kHz minimum.

Maintenance and Reliability

Routine inspection of the transducer and its cable is recommended to maintain reliable operation. Check for physical damage, loose connections, or corrosion, especially in harsh environments. The internal electronics are isolated from the case, reducing the risk of ground loops. With proper care, this transducer offers long service life, minimizing downtime and replacement costs.

Troubleshooting Common Issues

If the output signal seems erratic, first verify the cable length does not exceed 305 meters (1000 ft.) to avoid signal degradation. Also, confirm the output bias voltage is within 10.1 Vdc ± 1.0 Vdc. If the signal is absent, check the connector pins for damage or contamination. For persistent issues, consult the official Bently Nevada documentation 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 maximum cable length for this transducer?

A: The maximum cable length is 305 meters (1000 ft.) with no signal degradation.

Q: Can the transducer be mounted in any orientation?

A: Yes, the mounting angle is any orientation, as specified in the datasheet.

Q: What is the output bias voltage?

A: The output bias voltage is 10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B.

Product Support and Availability

The 190501-11-00-00 is available through Petro Auto Tech. Contact our team for current availability and lead times. We are ready to assist with your industrial automation needs.