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

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

When rotating machinery vibrates beyond safe limits, unplanned downtime and costly repairs follow. The 190501-11-00-04 from Bently Nevada provides reliable velocity measurement to help you monitor asset health and avoid failures. This Velomitor CT velocity transducer is engineered for harsh industrial environments, offering a rugged 316L stainless steel case and a wide operating temperature range.

With a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, the 190501-11-00-04 delivers consistent, accurate output for vibration monitoring. Its frequency response covers 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB, making it suitable for most rotating machinery applications. The transducer is certified for hazardous areas, including CSA/NRTL/C (Class I, Division 1) and ATEX/IECEx/CSA (Class I, Zone 0/1), ensuring safe operation in explosive atmospheres.

Key Features and Technical Specifications

The 190501-11-00-04 stands out with several performance-driven features. Here are the core specifications you can rely on:

• 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
• 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
• Case Material: 316L stainless steel
• Weight: <297 g (10.5 oz.), typical
• Mounting Hardware: Plate stud 3/8-in 24 to 1/4-in 28
• Connection: MIL-C-5015 connection interface

One distinctive spec is the mounted resonant frequency of 9 kHz minimum (stud mounted, except quick disconnect). This high resonant frequency ensures the transducer operates well above typical machine vibration frequencies, reducing measurement errors and providing cleaner data for analysis.

Applications and Use Cases

The 190501-11-00-04 is ideal for monitoring vibration on pumps, motors, fans, compressors, and other rotating equipment. In petrochemical plants, where explosive gases may be present, its hazardous area approvals (Class I, Division 1 and Zone 0/1) allow safe installation. For example, a refinery can use this transducer on critical pumps to detect bearing wear early, preventing catastrophic failures. Similarly, in power generation, the transducer helps monitor turbine vibrations, ensuring operational efficiency and safety.

Because the transducer has a maximum cable length of 305 metres (1,000 ft.) with part number 02173006, you can place monitoring electronics remotely without signal degradation. This flexibility simplifies installation in large facilities.

Installation and Setup

Proper installation is crucial for accurate vibration measurement. The 190501-11-00-04 mounts with a plate stud (3/8-in 24 to 1/4-in 28). Apply the recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf) to ensure a secure and reliable connection. The transducer can be mounted in any orientation, giving you flexibility in tight spaces.

For hazardous area installations, follow the provided drawing 167536 to maintain intrinsic safety. Ensure the cable is routed away from high-interference sources and secured to prevent strain. The MIL-C-5015 connection interface provides a robust, weatherproof connection.

Maintenance and Reliability

Regular inspection of the transducer and its mounting is essential for long-term reliability. Check the mounting stud for tightness periodically, as vibration can loosen connections over time. Verify the output bias voltage (10.1 Vdc ± 1.0 Vdc) to confirm the internal electronics are functioning correctly. The 316L stainless steel case resists corrosion, making the transducer suitable for harsh chemical and marine environments.

With a base strain sensitivity of 0.43 mm/s/μstrain (0.017 in/s/μstrain), the transducer minimizes errors from mechanical strain, ensuring accurate readings even when mounted on flexible surfaces. This reliability translates to lower maintenance costs and reduced downtime.

Compatibility and Integration

The 190501-11-00-04 is designed to work with Bently Nevada monitoring systems and can integrate with most vibration monitoring platforms that accept standard velocity transducer inputs. Its dynamic output impedance of less than 400 Ω typical ensures compatibility with a wide range of data acquisition systems. The internal electronics are isolated from the case, reducing ground loop issues and improving signal integrity.

For new installations, verify that your monitoring system supports the transducer's sensitivity and frequency range. The transducer's output bias voltage of 10.1 Vdc ± 1.0 Vdc is typical for Bently Nevada systems, but confirm with your system's specifications.

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%, providing a standard output for velocity transducers.

Q: Can this transducer be used in hazardous areas?

A: Yes, the 190501-11-00-04 has CSA/NRTL/C (Class I, Division 1) and ATEX/IECEx/CSA (Class I, Zone 0/1) approvals, making it suitable for explosive atmospheres.

Q: What is the maximum cable length?

A: The maximum cable length is 305 metres (1,000 ft.) with cable part number 02173006, with no 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).

Q: What mounting hardware is included?

A: The mounting hardware option is a plate stud 3/8-in 24 to 1/4-in 28.

Availability and Support

The Bently Nevada 190501-11-00-04 is available from Petro Auto Tech. Contact our team to confirm stock and lead times. We provide expert support to help you select the right transducer for your application.