Product Overview
When machinery vibration threatens uptime, the Bently Nevada 190501-12-99-00 Velomitor CT Velocity Transducer delivers precise, reliable measurements. This sensor converts mechanical velocity into an electrical signal, enabling early detection of rotating equipment faults. Designed for harsh industrial environments, it provides consistent performance across a broad operating range.
Technical Specifications Breakdown
Sensitivity and Frequency Response
The 190501-12-99-00 offers a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%. Its frequency response spans 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB, extending to 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB. This wide bandwidth captures both low-speed and high-speed vibration components.
Environmental Durability
Operating from -40°C to +85°C (-40°F to +185°F) and storing from -40°C to +100°C (-40°F to +212°F), this transducer withstands extreme conditions. It handles 100% condensing humidity (non-submerged) and a shock limit of 5000 g pk maximum. Magnetic field susceptibility remains below 0.0068 mm/s/gauss (0.268 mil/s/gauss) @ 50 gauss, 50-60 Hz.
Mechanical Construction
The case and connector are 316L stainless steel, offering corrosion resistance. Weight is less than 297 g (10.5 oz.) typical. Mounting surface diameter is 33 mm (1.3 in), and height is 82 mm (3.2 in). The unit includes a 32-foot cable (connection option 99) and a plate stud 3/8-in 24 to M8x1 mounting hardware option (12).
Industry Applications
Turbine and Compressor Monitoring
In power generation and oil & gas, the 190501-12-99-00 mounts on bearing housings of steam turbines and centrifugal compressors. Its 9 kHz minimum mounted resonant frequency ensures accurate readings up to high speeds. The internal electronics are isolated from the case, reducing ground loop interference.
Pump and Fan Vibration Analysis
For pumps and fans in water treatment or HVAC, this transducer's transverse response of less than 5% of axial sensitivity minimizes cross-axis errors. Amplitude linearity of ±2% to 63.5 mm/s pk (2.5 in/s pk) ensures reliable data for trend analysis.
Installation & Setup Guidance
Mount the transducer using the provided plate stud with a torque of 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf). Any orientation is acceptable. Polarity is defined: Pin A goes positive with respect to Pin B when velocity is from base to top. Maximum cable length is 305 metres (1,000 ft.) using part number 02173006 without signal degradation. Output bias voltage is 10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B.
Maintenance & Reliability
Periodically inspect the cable and connector for damage. The 316L stainless steel case resists corrosion in humid or chemical environments. Operating temperature range of -40°C to +85°C supports continuous use in most industrial settings. No internal adjustments are required; the unit is sealed and maintenance-free under normal conditions.
Selection Guide & Purchasing Advice
Before ordering, verify that the mounting hardware option (12 = plate stud) and connection option (99 = 32-foot cable) match your installation requirements. Agency approval option 00 means no intrinsic safety certifications; for hazardous areas, consider options 01 through 04. Contact SpareTechPLC to confirm availability and lifecycle status. The 190501-12-99-00 is a reliable choice for upgrading older vibration monitoring systems.
