Bently Nevada 190501-19-00-04 Velomitor CT Velocity Transducer Overview

Product Introduction

When unexpected machinery vibrations threaten production uptime, the Bently Nevada 190501-19-00-04 Velomitor CT Velocity Transducer provides reliable, continuous monitoring. This rugged sensor is designed for demanding applications where accurate velocity measurements are critical to prevent catastrophic failures. With a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, it delivers precise readings across a wide frequency range.

Technical Specifications Breakdown

The 190501-19-00-04 offers a frequency response of 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB, ensuring accurate velocity readings for most rotating machinery. For broader monitoring needs, its extended range reaches 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB. The transducer maintains amplitude linearity within ±2% up to 63.5 mm/s pk (2.5 in/s pk), guaranteeing trustworthy data under varying load conditions. Its output bias voltage is 10.1 Vdc ± 1.0 Vdc, referenced from Pin A to Pin B, simplifying integration with standard monitoring systems. The dynamic output impedance is less than 400 Ω typical, allowing long cable runs without signal degradation.

Industry Applications

This velocity transducer excels in monitoring critical assets such as steam turbines, centrifugal compressors, and large pumps in oil and gas, power generation, and petrochemical facilities. Its ability to operate from -40°C to +85°C (-40°F to +185°F) makes it suitable for both indoor and outdoor installations. The 190501-19-00-04 is also intrinsically safe (Ex ia IIC T4 and AEx ia IIC T4), meeting stringent safety requirements for hazardous areas classified as Class I, Division 1, Groups A, B, C, D.

Installation & Setup Guidance

Proper mounting is essential for accurate vibration measurement. The transducer includes a 3/8-in 24 to 1/4-in 18 NPT adapter and uses a MIL-C-5015 connection interface. It can be mounted in any orientation, with a recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf). The case material is 316L stainless steel, providing excellent corrosion resistance. Polarity is defined so that Pin A goes positive with respect to Pin B when velocity is from base to top of the transducer.

Maintenance & Reliability

Routine inspection of the transducer and its cable connections helps ensure long-term reliability. The maximum cable length of 305 metres (1,000 ft.) with part number 02173006 allows flexible placement while maintaining signal integrity. The unit can withstand shock up to 5000 g pk and operates in 100% condensing humidity (non-submerged). Its internal electronics are isolated from the case, reducing ground loop issues.

Selection Guide & Purchasing Advice

Before purchasing the 190501-19-00-04, verify that your monitoring system accepts a velocity input with the specified sensitivity and output bias voltage. Confirm the agency approval option matches your site’s hazardous area classification (CSA/NRTL/C for Class I, Division 1, and ATEX/IECEx/CSA for Zone 0/1). For complete technical specifications and current availability, contact BluePLC Industrial. Our team can help you select the right transducer for your application and ensure compatibility with existing Bently Nevada monitoring equipment.