Introduction
When unplanned machinery downtime threatens production targets, the Bently Nevada 190501-01-99-CN Velomitor CT Velocity Transducer delivers reliable vibration data to help maintenance teams act fast. This rugged sensor converts mechanical velocity into an electrical signal, enabling early detection of bearing wear, imbalance, and misalignment in rotating equipment.
Technical Specifications Breakdown
The 190501-01-99-CN provides a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, ensuring accurate readings across a wide frequency range. Its frequency response spans 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB and extends to 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB, covering most industrial vibration signatures. The output bias voltage sits at 10.1 Vdc ± 1.0 Vdc (Pin A referenced to Pin B), with a dynamic output impedance of less than 400 Ω typical. Amplitude linearity holds within ±2% up to 63.5 mm/s pk (2.5 in/s pk), and the mounted resonant frequency reaches 9 kHz minimum when stud mounted (except quick disconnect).
Industry Applications
In petrochemical plants, the 190501-01-99-CN monitors critical pumps and compressors where high temperatures and corrosive atmospheres are common. Its 316L stainless steel case and 100% condensing humidity tolerance make it suitable for offshore platforms and paper mills. For power generation, the transducer tracks turbine vibrations, helping operators schedule maintenance before failures occur. The unit’s wide operating temperature range of -40°C to +85°C (-40°F to +185°F) ensures reliable performance in both arctic and desert environments.
Installation & Setup Guidance
Mount the 190501-01-99-CN using the included 3/8-in 24 stud with a torque of 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf). The transducer accepts any orientation, simplifying placement in tight machinery spaces. Connect the 32-foot cable (included) to your monitoring system, ensuring Pin A goes positive with respect to Pin B when velocity is from base to top. For maximum signal integrity, keep cable length under 305 metres (1,000 ft.) using part number 02173006.
Maintenance & Reliability
Routine inspection of the mounting surface and cable connections helps maintain measurement accuracy. The internal electronics are isolated from the case, reducing ground loop issues. With a shock limit of 5000 g pk and magnetic field susceptibility below 0.0068 mm/s/gauss (0.268 mil/s/gauss) at 50 gauss, 50-60 Hz, this transducer withstands harsh industrial conditions. Regular calibration checks every 12 months ensure the sensitivity remains within ±5%.
Compatibility & Integration
The 190501-01-99-CN integrates seamlessly with Bently Nevada monitoring systems and most industrial vibration data collectors. Its 2-pin 316L stainless steel MIL-C-5015 top connector mates with standard cables. The unit’s intrinsic safety approvals (Ex ia IIC T4, Class I, Div 1, Groups A, B, C, D) allow use in hazardous areas when installed per drawing 167536.
Selection Guide & Purchasing Advice
Before ordering, verify your required agency approval option and cable length. The 190501-01-99-CN includes the CN country-specific approval and a 32-foot cable. Contact SpareTechPLC to confirm availability and compatibility with your existing monitoring hardware. Our team can help you select the right mounting hardware and accessories for your specific application.
Frequently Asked Questions
Q: What is the sensitivity of the 190501-01-99-CN?
A: The sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5%.
Q: Can this transducer be used in hazardous areas?
A: Yes, with agency approval options 01 through 04, it is intrinsically safe Ex ia IIC T4 and non-incendive Ex nL IIC T4 per drawing 167536.
Q: What is the maximum cable length without signal degradation?
A: Up to 305 metres (1,000 ft.) using cable part number 02173006.
Q: What is the operating temperature range?
A: -40°C to +85°C (-40°F to +185°F).
Q: What is the weight of the 190501-01-99-CN?
A: Less than 297 g (10.5 oz.), typical.
