Bently Nevada 190501-02-00 Velomitor CT Velocity Transducer

Description

The 190501-02-00 is a Velomitor CT Velocity Transducer featuring a 3/8-in 24 to 1/2-in 20 mounting stud (Option 02) and a MIL-C-5015 connection interface (Option 00). This specialized piezoelectric velocity sensor is engineered to measure casing vibration velocity specifically on low-frequency rotating machinery, such as cooling tower and air-cooled heat-exchanger fan assemblies typically operating at or above 90 rpm. The Velomitor CT (Cooling Tower) design differentiates itself by providing reliable signal output for the low-frequency ranges common to fan speed reducers and motors. The device utilizes a high-performance piezoelectric element with integrated electronics to convert vibration velocity into an electrical signal, which is then transmitted to a monitoring system. This unit includes the standard MIL-C-5015 connector interface for integration into existing monitoring chains and utilizes the 3/8-in 24 to 1/2-in 20 mounting stud for secure mechanical connection to bearing housings or machine casings.

Features

• Velomitor CT design optimized for low-frequency applications (100 to 300 rpm typical).
• Option 02 mounting hardware: 3/8-in 24 to 1/2-in 20 stud for robust installation.
• Option 00 connection: Standard MIL-C-5015 connection interface.
• Sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%.
• Frequency response range of 1.5 Hz to 1.0 kHz (±3.0 dB).
• Case material: 316L stainless steel for industrial durability.
• Internal electronics isolated from the sensor case.
• Operating temperature range: -40 degC to +85 degC.

Applications

• Cooling tower fan assemblies
• Air-cooled heat exchanger fans
• Low-speed rotating machinery monitoring
• Casing vibration measurement
• Machine protection for unbalance and misalignment detection

Ordering Information

Option	Code on This SKU	Description
Orderable Part Number	190501-02-00	Velomitor CT Velocity Transducer
A - Mounting Hardware	02	Stud 3/8-in 24 to 1/2-in 20
B - Connection Option	00	MIL-C-5015 connection interface

Technical Specifications

Manufacturer	Bently Nevada (Baker Hughes)
Part Number	190501-02-00
Sensitivity	3.94 mV/mm/s (100 mV/in/s) ±5%
Velocity Range	63.5 mm/s pk (2.5 in/s pk)
Frequency Response	3.0 Hz to 900 Hz (±1.0 dB); 1.5 Hz to 1.0 kHz (±3.0 dB)
Output Bias Voltage	10.1 Vdc ±1.0 Vdc
Operating Temperature	-40 degC to +85 degC
Case Material	316L stainless steel
Connector	2-pin 316L stainless steel MIL-C-5015
Weight	< 297 g (10.5 oz) typical
Mounting Torque	4.5 N-m ± 0.6 N-m

Installation Guidelines

• Install the transducer directly on the bearing housing or machine casing for accurate vibration transmission.
• Ensure the mounting surface is clean and drilled/tapped correctly to accommodate the 3/8-in 24 mounting stud.
• Use the specified mounting torque of 4.5 N-m to ensure mechanical integrity.
• Properly route cables away from high-temperature areas or moving parts, utilizing conduit where necessary.
• Verify the polarity: Pin A goes positive relative to Pin B when velocity is directed from the base to the top of the sensor.

Compliance and Certifications

• CE Directive 2014/30/EU (EMC)
• RoHS Directive 2011/65/EU
• FCC Part 15 compliant