Bently Nevada 190501-12-99-00 Velomitor CT Velocity Transducer for Vibration Monitoring

Product Introduction

When machinery vibration threatens uptime and asset reliability, the Bently Nevada 190501-12-99-00 Velomitor CT Velocity Transducer provides accurate, real-time velocity measurements to detect developing faults early. This rugged transducer is designed for continuous monitoring in demanding industrial environments, converting mechanical velocity into a proportional electrical signal for analysis and protection systems.

Technical Specifications Breakdown

The 190501-12-99-00 offers a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, ensuring consistent output across the measurement range. Its frequency response spans 3.0 Hz to 900 Hz (180 to 54,000 cpm) within ±1.0 dB, with an extended range of 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) at ±3.0 dB. This wide bandwidth captures both low-speed rotational vibrations and higher-frequency phenomena like gear mesh or blade pass. The output bias voltage is 10.1 Vdc ± 1.0 Vdc (Pin A referenced to Pin B), and the dynamic output impedance is less than 400 Ω typical. Amplitude linearity holds within ±2% up to 63.5 mm/s pk (2.5 in/s pk), while the mounted resonant frequency exceeds 9 kHz minimum (stud mounted, except quick disconnect).

Industry Applications

In rotating machinery such as pumps, compressors, turbines, and fans, the 190501-12-99-00 excels at monitoring shaft and bearing housing vibrations. Its robust 316L stainless steel case and 100% condensing humidity tolerance make it suitable for harsh environments like oil and gas refineries, chemical plants, and power generation facilities. The transducer's low base strain sensitivity (0.43 mm/s/μstrain) minimizes false readings from structural deformation, ensuring reliable data for predictive maintenance programs.

Installation & Setup Guidance

Mounting the 190501-12-99-00 is straightforward with the included plate stud 3/8-in 24 to M8x1 hardware. Apply a mounting torque of 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf) for secure attachment. The transducer can be oriented at any angle, and polarity is defined: Pin A goes positive with respect to Pin B when velocity is from base to top. The unit comes with a 32-foot cable (connection option 99), and maximum cable length is 305 meters (1,000 ft.) using part number 02173006 without signal degradation. Ensure the mounting surface is clean and flat (33 mm diameter minimum) to achieve optimal frequency response.

Maintenance & Reliability

With an operating temperature range of -40°C to +85°C (-40°F to +185°F) and a shock limit of 5000 g pk, the 190501-12-99-00 is built for long-term reliability. The internal electronics are isolated from the case, reducing ground loop issues. Periodic inspection of the cable and connector for damage is recommended, especially in high-vibration or corrosive environments. The transducer's magnetic field susceptibility is below 0.0068 mm/s/gauss (0.268 mil/s/gauss) at 50 gauss, 50-60 Hz, ensuring stable readings near electrical machinery.

Selection Guide & Purchasing Advice

Before ordering, verify that the agency approval option matches your site requirements. The 190501-12-99-00 comes with option 00 (no approvals). For intrinsically safe installations, consider options 01 through 04 which carry Ex ia IIC T4 and AEx ia IIC T4 certifications. At BluePLC Industrial, we stock genuine Bently Nevada transducers with full traceability. Contact our team to confirm compatibility with your existing monitoring system and to discuss replacement or upgrade needs.