190501-07-00-04 | Bently Nevada Velomitor CT Velocity Transducer

Introduction to the 190501-07-00-04

When machinery vibration threatens uptime, the 190501-07-00-04 from Bently Nevada provides a dependable solution. This Velomitor CT velocity transducer is engineered for industrial condition monitoring. It converts mechanical velocity into an electrical signal. That signal helps you detect imbalance, misalignment, and bearing wear early. With a sensitivity of 3.94 mV/mm/s (±5%), it delivers accurate data for predictive maintenance.

This transducer is part of the Velomitor CT family. It is designed for permanent installation on rotating equipment. The 190501-07-00-04 features a 316L stainless steel case. That makes it suitable for harsh environments. Its compact size and robust construction simplify installation. You can mount it in any orientation. That flexibility reduces installation constraints.

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; 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: 0.229 mm/s (0.009 in/s) pk.
• Base Strain Sensitivity: 0.43 mm/s/μstrain (0.017 in/s/μstrain).
• 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, 50-60 Hz.
• 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-C-5015, top.
• Mounting Torque: 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).
• 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.

The frequency response range is a standout feature. It covers 3.0 Hz to 900 Hz with ±1.0 dB flatness. That means accurate readings across typical machine speeds. The transducer also handles high shock levels. It can withstand 5000 g pk. That durability reduces the risk of damage during sudden events.

Applications and Use Cases

This velocity transducer is ideal for monitoring rotating machinery. Common applications include pumps, motors, fans, and gearboxes. It is also used on turbines and compressors. The 190501-07-00-04 helps detect unbalance and misalignment. It also identifies bearing faults and looseness. By providing continuous vibration data, it supports condition-based maintenance. That approach reduces unplanned downtime. It also extends equipment life.

For example, in a petrochemical plant, a pump might experience bearing wear. The transducer would sense the increased vibration. Maintenance teams could then plan a repair before failure. This proactive strategy saves costs and improves safety.

Installation and Setup

Proper installation is critical for accurate readings. The 190501-07-00-04 uses a plate stud mounting option. The stud size is 3/8-in 24. Ensure the mounting surface is clean and flat. Apply the specified mounting torque of 4.5 N-m ± 0.6 N-m. That prevents over-tightening or loosening. The transducer can be mounted in any orientation. That simplifies placement on complex machinery.

The connection interface is a MIL-C-5015 connector. It is a 2-pin 316L stainless steel connector located on top. Connect Pin A and Pin B correctly. Pin A goes positive with respect to Pin B when velocity is from base to top. For cable runs, the maximum length is 305 metres. Use the specified cable part number 02173006. That ensures signal integrity.

Follow the manufacturer's installation drawing. For hazardous areas, refer to the agency approval documentation. The 190501-07-00-04 has approvals for Class I, Division 1 and Zone 0/1. Always install per drawing 167536 for intrinsic safety.

Maintenance and Reliability

Routine inspection is essential for long-term reliability. Check the mounting integrity periodically. Verify that the stud remains tight. Inspect the connector for corrosion or damage. The 316L stainless steel case resists corrosion. That makes it suitable for humid or corrosive environments. The humidity limit is 100% condensing, non-submerged. That means it can handle condensation but not immersion.

Regular calibration checks are recommended. Compare readings against a known reference. This ensures accuracy over time. The transducer's temperature sensitivity is -8% to +5% typical. That variation is acceptable for most monitoring applications. By maintaining the transducer, you maximize its service life. That reduces replacement costs and downtime.

Compatibility and Integration

The 190501-07-00-04 is a passive velocity transducer. It generates a voltage proportional to velocity. That signal can be read by most vibration monitoring systems. It works with Bently Nevada monitors and other compatible devices. The output bias voltage is 10.1 Vdc ± 1.0 Vdc. That is standard for many monitoring systems. The dynamic output impedance is less than 400 Ω. That ensures minimal signal loss.

For integration, use the specified cable. The maximum cable length is 305 metres. That allows flexible placement of the monitoring system. The transducer's grounding is isolated from the case. That reduces ground loop issues. Always follow the manufacturer's guidelines for wiring.

Troubleshooting and Common Issues

If the transducer produces no signal, check the wiring first. Verify that Pin A and Pin B are connected correctly. Inspect the connector for damage. If the signal is weak, check the cable length. Long cables can cause attenuation. Ensure the cable is the specified type. If readings are noisy, check for electromagnetic interference. The magnetic field susceptibility is low. However, avoid placing the transducer near large magnetic sources.

If the output bias voltage is out of range, the electronics may be faulty. Replace the transducer if necessary. For persistent issues, consult the official Bently Nevada documentation. You can also contact Petro Auto Tech for technical support.

FAQ about 190501-07-00-04

Q: What is the sensitivity of the 190501-07-00-04?

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: 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 190501-07-00-04 suitable for hazardous areas?

A: Yes, it has approvals for Class I, Division 1 and Zone 0/1. Install per drawing 167536.

Q: What is the mounting torque requirement?

A: The mounting torque is 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).

Product Support and Availability

The 190501-07-00-04 is available from Petro Auto Tech. We are an industrial automation parts supplier. Contact us for current pricing and lead times. Our team can assist with selection and technical questions. Ensure you verify the lifecycle status before ordering. We are here to support your vibration monitoring needs.