Product Introduction
The Bently Nevada 190501-04-00-04 Velomitor CT Velocity Transducer is a precision industrial automation module engineered for reliable vibration measurement in critical rotating machinery. As part of the trusted 190501 series, this transducer delivers accurate velocity data essential for predictive maintenance and asset protection. Manufactured in the U.S.A., the 190501-04-00-04 combines rugged construction with advanced sensing technology, making it a cornerstone for condition monitoring systems in demanding industrial environments.
Technical Specifications Breakdown
Understanding the key specifications of the 190501-04-00-04 ensures optimal application and performance. The table below highlights critical parameters from the official datasheet.
| Parameter |
Value |
| Sensitivity |
3.94 mV/mm/s (100 mV/in/s) ±5% |
| Frequency Response (±1.0 dB) |
3.0 Hz to 900 Hz (180 to 54,000 cpm) |
| Frequency Response (±3.0 dB) |
1.5 Hz to 1.0 kHz (90 to 60,000 cpm) |
| Output Bias Voltage |
10.1 Vdc ± 1.0 Vdc (Pin A to Pin B) |
| Dynamic Output Impedance |
<400 Ω typical |
| Operating Temperature |
-40°C to +85°C (-40°F to +185°F) |
| Shock Limit |
5000 g pk, maximum |
| Case Material |
316L stainless steel |
| Weight |
<297 g (10.5 oz.) typical |
The 3.94 mV/mm/s sensitivity provides high-resolution output, ensuring even minor velocity changes are captured. The wide frequency response covers typical machine vibration ranges, while the robust operating temperature range (-40°C to +85°C) suits harsh environments. The 316L stainless steel case offers excellent corrosion resistance, and the output bias voltage facilitates easy integration with standard monitoring systems.
Industry Applications
The Bently Nevada 190501-04-00-04 is designed for vibration monitoring in rotating equipment such as pumps, motors, fans, and turbines. Its intrinsic safety certifications (CSA/NRTL/C, ATEX/IECEx) make it suitable for hazardous areas including oil & gas, chemical processing, and power generation. In a typical application, the transducer is stud-mounted to the bearing housing, where its high sensitivity and linearity enable early detection of imbalance, misalignment, or bearing wear—helping prevent unscheduled downtime.
Installation & Setup Guidance
Proper installation is crucial for accurate measurements. The 190501-04-00-04 features a stud M6x1 mounting with a 3/8-in-24 adapter, and the connection interface is MIL-C-5015. Ensure the mounting surface is clean and flat, and apply the recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf). The transducer can be mounted in any orientation, but verify polarity: Pin A goes positive with respect to Pin B when velocity is from base to top. For best results, avoid mounting on painted or uneven surfaces.
Maintenance & Reliability
Routine maintenance of the 190501-04-00-04 is minimal due to its solid-state design. However, periodic inspection of the cable and connector is recommended to prevent signal degradation. The maximum cable length of 305 metres (1,000 ft.) allows flexible placement, but ensure cable integrity. The internal electronics are isolated from the case, reducing ground loop issues. With no moving parts, the transducer offers long service life, contributing to lower total cost of ownership.
Selection Guide & Purchasing Advice
When selecting the Bently Nevada 190501-04-00-04, verify the agency approval option (04) matches your area classification—this unit is certified for Class I, Division 1 and Zone 0/1 environments. Confirm the mounting hardware and connection options suit your installation. For reliable sourcing, PLC Source PRO offers genuine, factory-new units with full traceability. Ensure you order the correct model number to avoid compatibility issues.