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      190501-12-00-02

      Low-Frequency Piezo-Velocity Transducer
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      Bently Nevada 190501-12-00-02 measures low-frequency casing vibration velocity on fan, motor and speed-reducer assemblies. Its mounting execution uses a 3/8–24 to M8 × 1 plate stud with a MIL-C-5015 connection interface.
      • Manufacturer part number
        190501-12-00-02
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        8.3cm x 3.5cm x 3.2cm
      • Country of Origin
        USA

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      What happens after you enquire

      • 0

        Review your reference

        Send the complete 190501-12-00-02 marking, label photos and mounting / cable requirements.

      • 1

        Confirm the offer

        Review the offered 3/8–24 to M8 × 1 plate stud, connection execution and included sensor accessories.

      • 2

        Arrange dispatch

        Confirm quantity, delivery details and the agreed dispatch date before shipment arrangement.

      • Match the complete marking

        Include the full 190501-12-00-02 reference, mounting thread, receiving monitor and operating-speed range.

      • Check the offered item before ordering

        Request label, sensor-base and connector photographs. Have your maintenance team compare the offered 190501-12-00-02 with the installed assembly and applicable Velomitor CT instructions.

      Technical specifications for 190501-12-00-02

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring Systems
      • Spare Part Number:
        190501-12-00-02
      • Weight:
        0.3 kg
      • Tariff Code:
        8537101190
      • Measurement output:
        Vibration velocity
      • Nominal sensitivity:
        3.94 mV/(mm/s), equivalent to 100 mV/(in/s)
      • Sensitivity tolerance:
        ±5% at specified reference conditions
      • Tight-band frequency response:
        3–900 Hz, ±1.0 dB
      • Wide-band frequency response:
        1.5 Hz–1 kHz, ±3.0 dB
      • Peak velocity range:
        63.5 mm/s; frequency-dependent operating curves apply
      • Amplitude linearity:
        ±2% through 63.5 mm/s peak
      • Typical thermal sensitivity change:
        −8% to +5% over operating range
      • Transverse response:
        Less than 5% of axial sensitivity
      • Mounted resonance:
        9 kHz minimum, stud mounted; quick disconnect excluded
      • Output bias:
        10.1 ±1.0 V DC, Pin A relative to Pin B
      • Typical dynamic output impedance:
        Less than 400 Ω
      • Broadband noise floor:
        0.229 mm/s peak over 1.5 Hz–1 kHz
      • Base-strain sensitivity:
        0.43 mm/s per microstrain
      • Electrical grounding:
        Internal electronics isolated from case
      • Operating temperature:
        −40 to +85 °C
      • Storage temperature:
        −40 to +100 °C
      • Shock limit:
        5000 g peak maximum
      • Humidity:
        100% condensing; not submerged
      • Case material:
        316L stainless steel
      • Mounting hardware:
        3/8–24 to M8 × 1 plate stud
      • Connection execution:
        MIL-C-5015 connection interface
      • Mounting torque:
        4.5 ±0.6 N·m
      • Mounting orientation:
        Any orientation; sensing direction retained
      • Maximum stated cable example:
        305 m of cable 02173006 under stated conditions
      • Conditional cable recommendation:
        219 m at 4 in/s, 1 kHz and 200 pF/m
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • Bently Nevada 190501-12-00-02 extends velocity monitoring to slow-running fan structures where the measurement path must carry rotor motion to an accessible casing surface. The complete channel must retain that low-frequency response, not just the transducer’s nominal sensitivity.
      Slow-machine response: The sensing characteristic addresses fan assemblies operating at or above 90 rpm.
      Structural transmission: A representative casing or bearing-housing location must transmit the vibration relevant to protection.
      Directional signal interpretation: Mounting direction and connector polarity define the sign used for phase comparison.
      Velomitor CT measures absolute casing velocity rather than shaft displacement relative to a proximity probe. Rotor unbalance or misalignment can increase rotor motion, but a casing-mounted sensor detects that motion only through the machine’s structural transmission path. Select a mechanically representative bearing housing or casing position and avoid treating a low reading at an insensitive location as proof of a healthy rotor.

      The narrow and wide frequency-response bands have different amplitude tolerances. Fan rotation, motor vibration and reducer components may occupy different parts of the response curve, so a single broadband number does not establish equal accuracy for all components. The receiving monitor’s filtering and amplitude convention must also be suitable for the speed and fault mechanism being evaluated.

      The ordered 3/8–24 to M8 × 1 plate stud defines the connection between the sensor base and machine surface. The MIL-C-5015 connection interface defines the supplied signal interface, while conduit adapters and protective housings remain separate accessories. Mounting stiffness, base strain, cable loading and environmental exposure affect the usable measurement; these conditions must be checked together before a channel is returned to protection.
      Controller platform reference: Bently Nevada low-frequency velocity monitoring. Validate the structural path, cable interface and receiving-channel response.
      The 190501-12-00-02 downloads separate original sensor limits from an installation and channel-acceptance workbook. View PDF supplies a separate engineering dossier for low-frequency measurement, mounting selection and signal interpretation.
      Original manufacturer pages retain their technical context. Use the Apter Power guide with the applicable manufacturer instructions and approved installation design.
      System and supply context: 190501-12-00-02 belongs to the Velomitor CT low-frequency velocity family. Select the mounting execution and receiving-channel interface for the installed machine; mounting accessories, protective conduit and cable components must match the actual supplied assembly.

      Application scope: These applications concern casing-transmitted vibration on slow fan systems and associated equipment. They do not establish shaft-relative displacement capability or universal detection of every rotor fault from every mounting location.
      Prepare Bently Nevada 190501-12-00-02 for its configured installation using these checks.
      Choose a representative surface

      Check the vibration path from the component of concern to the proposed bearing-housing or casing location.

      Inspect the mounting thread and seating

      Match the ordered adapter and prepare a firm seating surface; resolve looseness or damaged threads before testing.

      Retain connector polarity

      Check Pin A and Pin B throughout the signal path before comparing phase with a previous installation.

      Assess all cable conditions

      Evaluate capacitance, length, signal amplitude and frequency together; protect any necessary joints from moisture.

      Check low-frequency behavior

      Test the complete channel at frequencies relevant to the fan speed rather than relying only on a mid-band calibration.

      Review overload and environmental exposure

      Account for high-frequency acceleration components, mounting strain and actual temperature before accepting a suspect signal.

      Alternative Names

      Bently Nevada 190501-12-00-02 190501 12 00 02

      Technical notes

      High-frequency overload: Vibration above 1 kHz exceeding 10 g peak can significantly reduce the available velocity range, even if the desired measurement component is at a lower frequency.

      Cable statements: The 305 m specified-cable example and the 219 m recommendation at explicit amplitude, frequency and capacitance conditions are separate limits. Neither is a universal guarantee for every cable or waveform.

      Mechanical strain: Base strain can create an apparent velocity contribution. Inspect seating, mounting stress and cable forces when the indication changes without a corresponding machine operating change.

      Amplitude convention: Keep peak, RMS and peak-to-peak conventions consistent between the test reference and monitoring channel; nominal sensitivity alone does not define the displayed convention.

      FAQ View All FAQ

      • Can an M8 mounting hole alone prove that 190501-12-00-02 is fitted correctly?
        No. Verify the supplied 3/8–24 to M8 × 1 plate stud, thread pitch, seating and mechanical contact. A different M8 pitch or compliant plate interface can prevent the required fit or alter the vibration transmission.
      • What should be done if the case-mounted reading of 190501-12-00-02 changes after tightening nearby hardware?
        Check whether base strain or the structural transmission path changed. Compare the mounting surface and torque condition with a controlled reference; the sensor has finite base-strain sensitivity, so a changed indication is not automatically a new rotor condition.
      • Does an unchanged DC bias prove the dynamic measurement of 190501-12-00-02 is correct?
        No. Bias can remain plausible while mounting, cable loading or filtering changes the dynamic response. Apply a suitable vibration reference or compare with a validated channel at the relevant frequency and direction.
      • How should a cable extension for 190501-12-00-02 be assessed beyond its physical length?
        Include cable capacitance, waveform frequency and amplitude, connector quality and the receiving input. The stated 219 m example assumes 200 pF/m, 1 kHz and 4 in/s; evaluate the actual installation rather than substituting an arbitrary cable of the same length.
      • Why can a phase comparison fail after installing 190501-12-00-02 in a permitted orientation?
        Any mounting orientation is allowed, but reversing the sensing direction or connector polarity reverses the measurement sign. Reconcile both physical direction and Pin A/Pin B wiring with the reference before evaluating machine phase.
      • Can the marked approval execution of 190501-12-00-02 replace a complete hazardous-area circuit review?
        No. Match the delivered marking to the required area classification and assess the compatible circuit, wiring and installation conditions. A product suffix or enclosure appearance alone does not validate the complete installed loop.
      • Why should an alarm for 190501-12-00-02 not be set directly from the broadband noise-floor value?
        That value describes peak noise across a defined band, while an alarm depends on the selected processing, machine background and protection objective. Measure the installed baseline with the intended filters and establish an appropriate criterion for that application.
      • Does the resonance specification of 190501-12-00-02 extend its calibrated velocity band to 9 kHz?
        No. Mounted resonance and the specified velocity-response band are different boundaries. Use the applicable response curves for measurement accuracy and investigate high-frequency excitation separately if it causes overload or misleading low-frequency results.
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