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Manufacturer: Bently Nevada

Part number: 190501-18-99-04 

Product type :Velocity Transducer

Weight: <297 g (10.5 oz.), typical

Mounting Surface: 33 mm diameter (1.3 in diameter)

Height: 82 mm (3.2 in)

Case Material: 316L stainless steel

Connector: 2-pin 316L stainless steel MIL-C5015, top

Mounting Torque: 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf)

Polarity: Pin A goes positive with respect to Pin B when velocity is from base to top of the transducer

Mounting Angle: Any orientation

Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5%

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

The Velomitor CT Velocity Transducer is a low-frequency version of our standard Velomitor Piezo-velocity Sensor. Itsdesign specifically measures casing vibration velocity oncooling tower and air-cooled heat-exchanger fan assemblies that operate at or above 90 rpm (100 to 300 rpmtypical).

The Velomitor CT Transducer can measure vibrationam plitudes at these frequencies as well as the vibration frequencies generated by the fan motor and speed reducer.

Frequently Asked Questions

Q : What exactly is the 190501-18-99-04?

A : It is a Bently Nevada Velomitor CT (Cooling Tower) Velocity Transducer. It measures the absolute casing vibration velocity of low-speed rotating machinery.

Q : What is the frequency response range of this transducer?

A : The standard frequency response is 1.5 Hz to 1.0 kHz (±3 dB), optimizing its sensitivity for low-frequency faults.

Q : What is the nominal sensitivity of the 190501?

A : The standard sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±10% measured at a reference frequency of 100 Hz.

Q : What is the maximum velocity range it can measure before clipping?

A : The maximum vibration measurement range is typically 127 mm/s (5 in/s) peak.

Product Applications

Power and Energy Industry: Vibration monitoring of large cooling tower fans and air-cooled fan units in power plants.

Oil and Gas Chemical Industry: Monitoring the vibration of fan blades, gearboxes, and drive motor casings of large air-cooled heat exchangers in refineries and chemical plants.

Metallurgy and Heavy Manufacturing: Monitoring low-speed exhaust systems and large industrial fans in high-pollution and highly complex environments such as steel mills.

Water Treatment and Utilities: Monitoring the mechanical health of large water pumps, large low-speed mixers in wastewater treatment plants, and ventilation equipment.