190501-11-00-04 | Bently Nevada 3.94 mV/mm/s Velocity Transducer

Introduction to the 190501-11-00-04

When rotating machinery begins to vibrate unexpectedly, the 190501-11-00-04 from Bently Nevada provides the critical data needed to diagnose problems before they escalate. This Velomitor CT velocity transducer is engineered for continuous vibration monitoring in demanding industrial environments.

With a sensitivity of 3.94 mV/mm/s (±5%), the 190501-11-00-04 delivers accurate velocity measurements across a frequency range of 3.0 Hz to 900 Hz (±1.0 dB). This performance makes it a reliable choice for protecting compressors, pumps, and other rotating assets.

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: Less than 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).
• Maximum Cable Length: 305 metres (1,000 ft.) of cable (part number 02173006) with no signal degradation.
• Operating Temperature: -40°C to +85°C (-40°F to +185°F).
• Shock Limit: 5000 g pk, maximum.
• Humidity Limit: 100% condensing, non-submerged.
• Case Material: 316L stainless steel.
• Mounting Torque: 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).

One distinctive feature is the MIL-C-5015 connection interface, which ensures a rugged and secure electrical connection. This is particularly valuable in harsh environments where connector reliability is critical.

Applications and Use Cases

The 190501-11-00-04 is well-suited for vibration monitoring on rotating machinery such as turbines, fans, and motors. Its broad frequency response captures both low-speed and high-speed vibrations, making it versatile across various industrial sectors.

For example, in a petrochemical plant, this transducer can be mounted on a critical pump to provide early warning of bearing wear or imbalance. The 190501-11-00-04 also excels in applications where space is limited, thanks to its compact design (82 mm height, 33 mm mounting surface diameter).

Installation and Setup

Mounting the 190501-11-00-04 is straightforward. The mounting hardware option includes a plate stud (3/8-in 24 to 1/4-in 28), and the transducer can be oriented in any direction. Ensure the mounting surface is clean and flat to achieve optimal coupling.

Apply the specified mounting torque of 4.5 N-m ± 0.6 N-m to secure the transducer. For best results, use the recommended cable (part number 02173006) up to 305 metres without signal degradation. The internal electronics are isolated from the case, which helps prevent ground loops.

Maintenance and Reliability

Routine inspection of the 190501-11-00-04 is essential to maintain its accuracy. Periodically check the mounting integrity and the condition of the cable and connector. The 316L stainless steel case provides excellent corrosion resistance, making it suitable for harsh environments.

Given its robust design and high shock limit (5000 g), the 190501-11-00-04 offers long-term reliability, reducing the need for frequent replacements. This translates to lower maintenance costs and minimized downtime.

Compatibility and Integration

The 190501-11-00-04 is designed to work with Bently Nevada monitoring systems. Its output bias voltage of 10.1 Vdc and low output impedance ensure compatibility with standard vibration monitoring equipment. The MIL-C-5015 connector is widely used in industrial applications, simplifying integration.

For hazardous area installations, the agency approval option 04 includes CSA/NRTL/C (Class I, Division 1) and ATEX/IECEx/CSA (Class I, Zone 0/1) certifications, ensuring safe operation in explosive atmospheres.

Common Questions About the 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: Can the 190501-11-00-04 be used in hazardous areas?

A: Yes, with agency approval option 04, it is certified for Class I, Division 1 and Zone 0/1 environments.

Q: What is the maximum cable length for the 190501-11-00-04?

A: Up to 305 metres (1,000 ft.) of cable (part number 02173006) can be used without signal degradation.

Q: What is the operating temperature range?

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

Product Support and Availability

The 190501-11-00-04 is available from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. Our team can assist with technical questions and provide documentation.

In stock and ready to ship, the 190501-11-00-04 is a dependable choice for your vibration monitoring needs.