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190501-02-00-04

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The 190501-02-00-04 is a Velomitor CT Velocity Transducer designed for low-frequency vibration monitoring on cooling tower and air-cooled heat-exchanger fan assemblies.
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Technical specifications for 190501-02-00-04

  • Manufacturer:
    Bently Nevada
  • Part Number:
    190501-02-00-04
  • Product Family:
    190501 Velomitor CT Transducer
  • Product Type:
    Velomitor CT Velocity Transducer
  • Measurement Type:
    Low-frequency casing vibration velocity
  • Target Applications:
    Cooling tower fans, air-cooled heat-exchanger fan assemblies
  • Minimum Operating Speed:
    90 rpm
  • Typical Operating Range:
    100 to 300 rpm
  • Mounting Hardware:
    Stud 3/8-24 to 1/2-20 adapter
  • Connection Interface:
    MIL-C-5015
  • Agency Approvals:
    CSA/NRTL/C (Class I, Division 1); ATEX/IECEx/CSA (Class I, Zone 0/1)
  • Key Benefit:
    Solves the pain point of inaccurate vibration monitoring on slow-speed equipment (90-300 rpm) where standard velocity sensors lack low-frequency sensitivity.
  • Weight:
    0.3 kg
  • Estimated shipping dimensions:
    9.2x3.6x3cm
  • Tariff Code:
    8543902100
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Application Firmware Installation Guidelines

Features:

  • The 190501-02-00-04 features low-frequency design for cooling tower and heat-exchanger applications.
  • This model includes stud mounting hardware with 3/8-24 to 1/2-20 thread adapter.
  • The 190501-02-00-04 offers multiple hazardous area approvals including CSA, ATEX, and IECEx.
The 190501-02-00-04 provides essential vibration monitoring functions for slow-speed rotating equipment in explosive environments. This transducer accurately measures vibration amplitudes at low frequencies as well as the vibration frequencies generated by the fan motor and speed reducer. The 190501-02-00-04 carries multiple international approvals including CSA/NRTL/C for Class I, Division 1 and ATEX/IECEx/CSA for Class I, Zone 0/1 hazardous areas, directly affecting its suitability for global deployment in classified locations.

For comprehensive machinery health monitoring, the 190501-02-00-04 delivers reliable vibration data that supports predictive maintenance programs while maintaining hazardous area compliance. The MIL-C-5015 connection interface on the 190501-02-00-04 ensures reliable signal transmission without compromising the explosion-proof rating. This transducer enables early detection of developing faults in fan assemblies operating in the 100 to 300 rpm range where standard sensors cannot provide accurate measurements.

The 190501-02-00-04 represents Bently Nevada's specialized solution for monitoring slow-speed rotating equipment in hazardous areas worldwide. This transducer provides the sensitivity and frequency response necessary to detect developing faults before catastrophic failures occur. The 190501-02-00-04 ensures reliable operation of critical cooling assets through accurate, low-frequency vibration measurement with comprehensive hazardous area certifications.

The 190501-02-00-04 Bently Nevada Velomitor CT Velocity Transducer may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

Bently Nevada 190501-02-00-04 Velomitor CT Velocity Transducer Manuals,Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Bently Nevada 190501-02-00-04 Velomitor CT Velocity Transducer Specs

General

  • Manufacturer GE / Bently Nevada
  • Model 190501-02-00-04
  • Condition New Original ready stock
  • Product Family 190501-12-00-04,190501-13-00-04,190501-14-00-04
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Cooling Towers & Air-cooled Heat Exchangers: This is its core application. Specifically designed to monitor low-speed fan assemblies, providing early warning of blade imbalance or bearing failure.
  • Low-Speed ​​Rotating Machinery: Suitable for industrial equipment operating at speeds between 100 and 300 rpm, such as large low-speed fans, slow-speed pump sets, and mixers.
  • Casing Vibration Monitoring: Measures the vibration velocity of casings in equipment equipped with rolling element bearings for condition monitoring and fault diagnosis.
  • Sensor Side: The 190501 is an analog piezoelectric sensor. It does not contain programmable logic or a processor, therefore the sensor itself does not require or support firmware updates.
  • System Side: To improve monitoring accuracy or compatibility, updates should be applied to the connected monitoring system module (such as the 3500 series module). Users must obtain the latest module firmware through the Bently Nevada official service portal and flash it using the configuration software.
  • Calibration Recommendations: Due to its low-frequency characteristics, it is recommended to periodically verify sensitivity using a dedicated low-frequency vibration calibrator (such as the Model 9110D) rather than compensating for attenuation through software updates.
  • Location: Should be installed on the bearing housing or in the housing location that best reflects rotor vibration.
  • Surface Requirements: The mounting surface must be flat (flatness within 0.001 inches). 1/2-20 UNF bolts are recommended (determined by -02 in the code).
  • Torque: Tighten with a torque of 33 to 47 Newton-meters (N·m) to ensure complete coupling between the sensor and the surface.
Description
The 190501-02-00-04 is a low-frequency version of the standard Velomitor Piezo-velocity Sensor, engineered specifically for cooling tower and air-cooled heat-exchanger applications. This transducer measures casing vibration velocity on fan assemblies operating at or above 90 rpm, with typical operating ranges of 100 to 300 rpm. 

The 190501-02-00-04 excels at capturing vibration amplitudes at low rotational speeds where standard velocity sensors cannot provide accurate data. This specialized transducer measures both the fundamental fan vibration frequencies and the vibration frequencies generated by the fan motor and speed reducer. 

The 190501-02-00-04 carries multiple international approvals including CSA/NRTL/C for Class I, Division 1 locations and ATEX/IECEx/CSA for Class I, Zone 0/1 hazardous areas. These certifications allow the 190501-02-00-04 to be deployed globally in explosive environments without additional certification requirements. 

The 190501-02-00-04 represents Bently Nevada's solution for the unique challenges of monitoring slow-speed rotating equipment in hazardous locations. This transducer provides the sensitivity and frequency response necessary to detect developing faults before they lead to catastrophic failures. 
Alternative Names
190501-12-00-04 190501-13-00-04 190501-14-00-04 190501-15-00-04
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the difference between the 190501-02-00-04 and standard Velomitor sensors?
The 190501-02-00-04 is a low-frequency version designed for 90-300 rpm cooling tower fans with hazardous area approvals, while standard sensors target higher-speed machinery without Zone 0/1 certifications.
How can I identify a quality supplier for the 190501-02-00-04?
Verify the supplier provides genuine CSA/ATEX/IECEx certification documentation, authentic low-frequency calibration data, and proper MIL-C-5015 connection verification for the 190501-02-00-04.
Does the 190501-02-00-04 require additional certifications for export to the United States?
The 190501-02-00-04 includes CSA/NRTL/C Class I Division 1 approval, satisfying US hazardous location requirements without additional certifications.
Why do velocity sensors like the 190501-02-00-04 experience connection failures?
Without MIL-C-5015 rugged connectors, standard connections fail in harsh environments. The 190501-02-00-04 prevents this with heavy-duty MIL-spec interface rated for hazardous areas.