Product Introduction
When machinery vibration threatens uptime, the Bently Nevada 190501-04-00-04 Velomitor CT Velocity Transducer delivers reliable, high-fidelity measurements. This velocity transducer is engineered for continuous monitoring in harsh industrial environments, providing critical data for predictive maintenance and asset protection.
Technical Specifications Breakdown
The 190501-04-00-04 offers a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, ensuring precise vibration velocity detection. Its frequency response spans 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB, with an extended range of 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB, covering low to medium frequency machinery vibrations. The output bias voltage is 10.1 Vdc ± 1.0 Vdc, referenced from Pin A to Pin B, while 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), and the mounted resonant frequency is 9 kHz minimum (stud mounted, except quick disconnect).
Industry Applications
This transducer excels in monitoring rotating equipment such as pumps, fans, compressors, and turbines. In a petrochemical plant, for instance, its wide operating temperature range of -40°C to +85°C (-40°F to +185°F) and 100% condensing humidity tolerance make it ideal for outdoor and washdown areas. The 316L stainless steel case resists corrosion, while the internal electronics are isolated from the case to prevent ground loops.
Installation & Setup Guidance
Mount the 190501-04-00-04 using the provided 4 stud M6x1 with 3/8-in 24 adapter. Apply a mounting torque of 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf) to ensure proper coupling. The transducer can be installed at any orientation, with polarity defined as Pin A going positive relative to Pin B when velocity is from base to top. For optimal signal integrity, use cable part number 02173006 up to 305 metres (1,000 ft.) without degradation.
Maintenance & Reliability
With a shock limit of 5000 g pk maximum and magnetic field susceptibility below 0.0068 mm/s/gauss (0.268 mil/s/gauss) at 50 gauss, 50-60 Hz, this transducer withstands demanding conditions. The base strain sensitivity is 0.43 mm/s/μstrain (0.017 in/s/μstrain), and broadband noise is only 0.229 mm/s (0.009 in/s) pk. Regular inspection of the mounting surface and connector integrity helps maintain long-term accuracy.
Selection Guide & Purchasing Advice
Before ordering, verify that the agency approval option 04 (CSA/NRTL/C Class I, Division 1; ATEX/IECEx/CSA Class I, Zone 0/1) matches your hazardous area requirements. The 190501-04-00-04 uses a MIL-C-5015 connection interface. For current availability and lifecycle status, contact SpareTechPLC, your trusted source for Bently Nevada components.
Frequently Asked Questions
Q: What is the sensitivity of the 190501-04-00-04?
A: The sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5%.
Q: What is the maximum cable length for this transducer?
A: You can use up to 305 metres (1,000 ft.) of cable (part number 02173006) without signal degradation.
Q: What mounting hardware is included?
A: The mounting hardware option is 4 stud M6x1 with a 3/8-in 24 adapter.
Q: Is the transducer suitable for hazardous areas?
A: Yes, with agency approval option 04, it is certified CSA/NRTL/C (Class I, Division 1) and ATEX/IECEx/CSA (Class I, Zone 0/1).
Q: What is the operating temperature range?
A: It operates from -40°C to +85°C (-40°F to +185°F).
