190501-11-00-04 | Bently Nevada Velomitor CT Velocity Transducer

Introduction to the 190501-11-00-04

When rotating machinery demands precise vibration measurement, the 190501-11-00-04 from Bently Nevada provides a dependable solution. This Velomitor CT velocity transducer converts mechanical velocity into an electrical signal, enabling condition monitoring and predictive maintenance. With a sensitivity of 3.94 mV/mm/s (±5%), it captures subtle changes in machine health.

Engineers trust this model for its robust design and consistent performance. The transducer's internal electronics are isolated from the case, reducing interference and improving signal integrity. Whether you are monitoring pumps, fans, or turbines, the 190501-11-00-04 offers the accuracy needed for early fault detection.

Key Features and Technical Specifications

The 190501-11-00-04 is engineered for demanding industrial environments. Below are its core specifications:

• Product Type: Velomitor CT Velocity Transducer
• 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
• 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
• Weight: <297 g (10.5 oz.), typical

One standout feature is the broadband response of 0.229 mm/s (0.009 in/s) pk, which ensures accurate measurement across a wide frequency range. This makes the 190501-11-00-04 ideal for detecting both low-speed and high-speed machinery faults.

Applications and Use Cases

The 190501-11-00-04 excels in various industrial settings. It is commonly used for vibration monitoring on rotating equipment such as motors, gearboxes, and compressors. Its intrinsic safety approvals (Ex ia IIC T4, AEx ia IIC T4) allow installation in hazardous areas, including Class I, Division 1 and Zone 0/1 environments.

For example, in a chemical plant, the transducer can monitor pump vibration to detect bearing wear before failure occurs. This proactive approach reduces unplanned downtime and maintenance costs. Additionally, its wide operating temperature range makes it suitable for outdoor installations in extreme climates.

Installation and Setup

Proper installation is critical for accurate readings. The 190501-11-00-04 features a mounting hardware option of a plate stud (3/8-in 24 to 1/4-in 28). The recommended mounting torque is 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf). Ensure the mounting surface is clean and flat to achieve optimal coupling.

The transducer uses a MIL-C-5015 connection interface, which provides a secure and reliable electrical connection. For extended cable runs, the maximum cable length is 305 meters (1,000 ft.) using part number 02173006, with no signal degradation. Always follow the manufacturer's installation drawing (167536) for hazardous area installations.

Maintenance and Reliability

Routine maintenance of the 190501-11-00-04 is straightforward. Periodically inspect the mounting stud for tightness and check the cable for damage. The transducer's 316L stainless steel case resists corrosion, ensuring long-term reliability in harsh environments.

Because the internal electronics are isolated from the case, there is minimal risk of ground loops, which can cause measurement errors. Regular verification of the output bias voltage (10.1 Vdc ± 1.0 Vdc) can help confirm the transducer is functioning correctly. If readings drift, consult the Bently Nevada manual for troubleshooting steps.

Compatibility and Integration

The 190501-11-00-04 is designed to work with Bently Nevada monitoring systems and other data acquisition equipment that accept velocity transducer inputs. Its standard sensitivity of 3.94 mV/mm/s ensures compatibility with most vibration monitoring platforms.

For integration, the MIL-C-5015 connector simplifies wiring, and the polarity is defined: Pin A goes positive with respect to Pin B when velocity is from base to top. This clarity reduces installation errors. Always verify that your monitoring system's input impedance matches the transducer's output impedance (<400 Ω) for optimal signal transfer.

Frequently Asked Questions

Q: What is the frequency response of the 190501-11-00-04?

A: The transducer has a frequency response of 3.0 Hz to 900 Hz (±1.0 dB) and 1.5 Hz to 1.0 kHz (±3.0 dB), covering a wide range of machine speeds.

Q: Can this transducer be used in hazardous areas?

A: Yes, the 190501-11-00-04 has intrinsic safety approvals (Ex ia IIC T4, AEx ia IIC T4) for Class I, Division 1 and Zone 0/1 installations.

Q: What is the maximum cable length?

A: The maximum cable length is 305 meters (1,000 ft.) using Bently Nevada cable part number 02173006, with no signal degradation.

Q: How should I mount the transducer?

A: Use the provided plate stud (3/8-in 24 to 1/4-in 28) and tighten to 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf) on a clean, flat surface.

Q: What is the operating temperature range?

A: The transducer operates from -40°C to +85°C (-40°F to +185°F), making it suitable for extreme environments.

Product Support and Availability

The 190501-11-00-04 is available from Petro Auto Tech, an industrial automation parts supplier. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. Our team can assist with technical questions and ensure you receive the correct part for your application.