190501-02-00-00 | Bently Nevada 3.94 mV/mm/s Velocity Transducer

Introduction to the 190501-02-00-00

In the evolving landscape of industrial machinery monitoring, accurate vibration measurement is essential for predictive maintenance and asset protection. The 190501-02-00-00 from Bently Nevada addresses this need as a Velomitor CT velocity transducer. It converts mechanical vibration into an electrical signal, enabling condition monitoring of rotating equipment such as turbines, compressors, and pumps.

This transducer is designed for reliability and performance. With a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, it provides consistent output for trend analysis. Its frequency response covers 3.0 Hz to 900 Hz (180 to 54,000 cpm) within ±1.0 dB, making it suitable for a wide range of machinery speeds.

Built with a 316L stainless steel case, the 190501-02-00-00 withstands harsh industrial environments. It operates over a temperature range of -40°C to +85°C (-40°F to +185°F) and can endure shock up to 5000 g pk. These characteristics make it a dependable choice for continuous vibration monitoring.

Key Features and Technical Specifications

The 190501-02-00-00 offers several distinctive features that enhance its utility in industrial settings. Below are the core 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; 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB.
• Temperature Sensitivity: -8% to +5% typical over operating temperature range.
• Transverse Response: Less than 5% of 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.
• Operating Temperature: -40°C to +85°C (-40°F to +185°F).
• Storage Temperature: -40°C to +100°C (-40°F to +212°F).
• Shock Limit: 5000 g pk, maximum.
• Humidity Limit: 100% condensing, non-submerged.
• Magnetic Field Susceptibility: <0.0068 mm/s/gauss (0.268 mil/s/gauss) @ 50 gauss, 50-60Hz.
• Weight: <297 g (10.5 oz.), typical.
• Mounting Surface: 33 mm diameter (1.3 in diameter).
• Height: 82 mm (3.2 in).
• Case Material: 316L stainless steel.
• Connector: 2-pin 316L stainless steel MIL-C5015, top.
• Mounting Torque: 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).
• Polarity: Pin A goes positive with respect to Pin B when velocity is from base to top of the transducer.
• Mounting Angle: Any orientation.

One distinctive spec is the base strain sensitivity of 0.43 mm/s/μstrain. This low value ensures that mechanical stress on the mounting surface does not significantly affect the vibration reading, leading to more accurate measurements in real-world installations.

Applications and Use Cases

The 190501-02-00-00 is ideal for monitoring vibration in rotating machinery across various industries. It is commonly used in:

• Turbo machinery (turbines, compressors)
• Pumps and fans
• Motors and generators
• Gearboxes and rolling mills

For example, in a petrochemical plant, the transducer can be mounted on a critical pump to detect bearing wear early. This allows maintenance teams to schedule repairs before a catastrophic failure, reducing downtime and repair costs. Moreover, its wide frequency response makes it suitable for both low-speed and high-speed equipment.

Installation and Setup

Proper installation is crucial for accurate vibration measurement. The 190501-02-00-00 features a stud mounting option (3/8-in 24 to 1/2-in 20) and a MIL-C-5015 connection interface. Follow these general guidelines:

• Ensure the mounting surface is clean and flat to achieve proper contact.
• Apply the recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf) to secure the transducer.
• Orient the transducer so that the arrow (if present) aligns with the primary vibration axis.
• Connect the cable (part number 02173006) securely to the MIL-C-5015 connector.
• Verify that the cable length does not exceed 305 metres (1,000 ft.) to avoid signal degradation.

Since the transducer can be mounted in any orientation, it offers flexibility in tight spaces. However, always refer to the manufacturer's manual for detailed installation instructions.

Maintenance and Reliability

The 190501-02-00-00 is designed for long-term reliability with minimal maintenance. Its 316L stainless steel case resists corrosion, and the internal electronics are isolated from the case, reducing the risk of ground loops. To ensure consistent performance, consider the following:

• Periodically inspect the cable and connector for damage or wear.
• Check that the mounting stud remains tight and secure.
• Verify that the output bias voltage remains within 10.1 Vdc ± 1.0 Vdc.
• Monitor the transducer's response during routine machinery checks to detect any drift.

By following these simple steps, you can extend the service life of the transducer and maintain accurate vibration data.

Compatibility and Integration

The 190501-02-00-00 is compatible with Bently Nevada monitoring systems and can be integrated into existing condition monitoring networks. Its output signal is a standard velocity signal, which can be connected to data acquisition systems or vibration analyzers. The MIL-C-5015 connector ensures a secure and reliable electrical connection.

For new installations, verify that the monitoring system accepts the transducer's sensitivity and bias voltage. The transducer's low output impedance (<400 Ω) allows for long cable runs without signal loss, making it suitable for large facilities.

Troubleshooting and Common Issues

While the 190501-02-00-00 is robust, occasional issues may arise. Here are some common problems and solutions:

• No output signal: Check the cable connection and ensure the transducer is properly powered.
• Erratic readings: Inspect for loose mounting or damaged cable.
• Signal drift: Verify that the output bias voltage is within specification.
• High noise: Ensure the cable is not routed near high-voltage lines or magnetic fields.

If problems persist, consult the official Bently Nevada documentation or contact Petro Auto Tech for technical support.

FAQ about the 190501-02-00-00

Q: What is the sensitivity of the 190501-02-00-00?

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 metres (1,000 ft.) using cable part number 02173006 without signal degradation.

Q: Can the 190501-02-00-00 be mounted in any orientation?

A: Yes, the transducer can be mounted in any orientation, offering installation flexibility.

Q: What is the operating temperature range?

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

Q: Is the 190501-02-00-00 suitable for hazardous areas?

A: This specific model (Agency Approval Option 00) has no approvals. For intrinsically safe options, refer to models with approval options 01 through 04.

Product Support and Availability

The 190501-02-00-00 is available through Petro Auto Tech, an industrial automation parts supplier. We ensure prompt delivery and competitive pricing. For inquiries about availability, lead times, or technical specifications, contact our team. We are committed to supporting your vibration monitoring needs.