190501-11-00-04 | Bently Nevada 100 mV/in/s Velocity Transducer

Introduction to the Bently Nevada 190501-11-00-04

When unplanned machine downtime disrupts production, the 190501-11-00-04 from Bently Nevada provides the accurate vibration data you need to act early. This Velomitor CT velocity transducer is engineered for continuous monitoring in demanding industrial environments. It converts mechanical velocity into a proportional electrical signal, enabling condition-based maintenance that reduces costly failures.

Key Features and Technical Specifications

The 190501-11-00-04 offers a robust set of performance parameters that ensure dependable operation. Below are the core specifications extracted directly from the product data:

• 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
• Mounted Resonant Frequency: 9 kHz minimum (stud mounted, except quick disconnect)
• Amplitude Linearity: ±2% to 63.5 mm/s pk (2.5 in/s pk)
• Transverse Response: Less than 5% of axial sensitivity
• Broadband: 0.229 mm/s (0.009 in/s) pk
• Base Strain Sensitivity: 0.43 mm/s/μstrain (0.017 in/s/μstrain)
• Maximum Cable Length: 305 metres (1,000 ft) with cable part number 02173006

These specifications allow the transducer to capture a wide range of vibration frequencies, making it suitable for rotating machinery such as pumps, fans, and motors. The high resonant frequency ensures accurate measurement even in high-speed applications.

Real-World Applications and Use Cases

The 190501-11-00-04 is ideal for predictive maintenance programs in industries like oil and gas, power generation, and manufacturing. By continuously monitoring vibration levels, you can detect bearing wear, imbalance, and misalignment before they escalate into catastrophic failures. 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. This makes it a versatile choice for plants that require robust monitoring in explosive atmospheres.

Installation and Setup

Proper installation is critical to achieving accurate measurements. The transducer comes with a mounting hardware option of a plate stud (3/8-in 24 to 1/4-in 28). The mounting torque should be 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf). The case is made of 316L stainless steel, and the connector is a 2-pin 316L stainless steel MIL-C-5015 top-mounted interface. The transducer can be mounted in any orientation, and the mounting surface has a 33 mm diameter (1.3 in). Ensure the mounting surface is clean and flat to avoid introducing measurement errors.

Maintenance and Reliability

Routine inspection of the transducer and its cable is recommended to maintain long-term reliability. Check for physical damage, loose connections, and signs of corrosion, especially in harsh environments. The internal electronics are isolated from the case, which reduces the risk of ground loops. The transducer operates over a wide temperature range (-40°C to +85°C) and can withstand shock up to 5000 g pk, ensuring durability in demanding conditions. Regular verification of the output bias voltage can help confirm that the transducer is functioning correctly.

Compatibility and Integration

The 190501-11-00-04 is designed to work with Bently Nevada monitoring systems and can be integrated into existing vibration monitoring networks. Its standard MIL-C-5015 connection interface simplifies wiring. The transducer's output is a velocity signal, which can be fed into compatible condition monitoring equipment for analysis. For detailed integration guidance, refer to the official Bently Nevada documentation or contact Petro Auto Tech for technical support.

Troubleshooting Common Issues

If you encounter erratic readings, first check the cable connection and ensure the mounting torque is correct. A loose mount can cause false vibration signals. Verify that the output bias voltage is within the specified range (10.1 Vdc ± 1.0 Vdc). If the signal is noisy, inspect the cable for damage and ensure it is not routed near high-voltage lines. For persistent issues, consult the manufacturer's manual or contact Petro Auto Tech for assistance.

FAQ about 190501-11-00-04

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

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.

Q: Is the 190501-11-00-04 suitable for hazardous areas?

A: Yes, it has intrinsic safety approvals including Ex ia IIC T4 and AEx ia IIC T4, allowing use in Class I, Division 1 and Zone 0/1 areas.

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 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).

Product Support and Availability

The 190501-11-00-04 is available through Petro Auto Tech, a trusted industrial automation parts supplier. Our team can assist with product selection and technical questions. Contact us to confirm current stock and lead times.