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Manufacturer: Bently Nevada

Part number: 190501-17-99-04 

Product type :Velocity Transducer

Model Number：190501-17-99-04

Mounting Hardware Option 17 ：Adapter, 3/8-in 24 to 3/8-in 16

Connection Option 99 ：Unit with included 32-foot cable

Agency Approval Option 04：CSA/NRTL/C (Class I, Division 1), ATEX/IECEx/CSA (Class I, Zone 0/1)

Operating Temperature: -40 °C to +85 °C (-40 °F to +185 °F)

Storage Temperature: -40 °C to +100 °C (-40 °F to +212 °F)

Shock Limit: 5000 g pk, maximum

Humidity Limit: 100% condensing, non-submerged

Mounted Resonant Frequency: 9 kHz, minimum 

Output Bias Voltage: 10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B

Dynamic Output Impedance: <400 Ω typical

The Velomitor CT Velocity Transducer is a specialized, low-frequency version of the standard Velomitor Piezo-velocity Sensor, designed to measure casing vibration velocity in cooling tower and air-cooled heat-exchanger fan assemblies.   This transducer is specifically engineered to operate at frequencies associated with cooling fan systems that typically run at or above 90 rpm, with the most common range being 100 to 300 rpm.

Due to its unique design, the Velomitor CT can accurately capture vibration amplitudes at these operational frequencies, as well as those generated by the fan motor and speed reducer.   This capability allows for effective monitoring of vibrations across various mechanical components, which is essential for condition-based monitoring and predictive maintenance of cooling systems.   The sensor's ability to measure low-frequency vibrations ensures reliable performance in industrial environments, helping detect early signs of mechanical issues such as imbalance, misalignment, or wear, thus preventing costly breakdowns.

Frequently Asked Questions

What is the standard sensitivity of the 190501?

The standard sensitivity is 3.94 mV/mm/s (100 mV/in/s)

How is the 190501-17-99-04 sensor mounted?

It is stud-mounted directly onto a flat, prepared metal surface on the machine casing

What is the operating temperature range?

It typically operates from -40°C to +121°C (-40°F to +250°F) 

What does the "-04" approval option mean?

It signifies specific international hazardous area certifications like ATEX, IECEx, or CSA

Product Applications

Oil and gas, petrochemical industry: Vibration monitoring of casings for large air cooler fans and unit cooling towers in oil refineries and chemical plants.

Power industry (thermal/nuclear power): Condition monitoring and protection of circulating water cooling tower fans and large ventilation and cooling systems in power plants.

Heavy industry and metallurgy: Fan monitoring of circulating water cooling systems in large industrial plants such as steel mills.