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      190501-21-00-01

      Velocity Transducer
      Ships by Saturday, November 7
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      Bently Nevada 190501-21-00-01 is a Velomitor CT velocity transducer for low-speed fan assemblies. This configuration combines a 3/8-24 to 1/2-14 NPT adapter with a MIL-C-5015 connection.
      • Manufacturer part number
        190501-21-00-01
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        10.2cm × 4cm × 3.4cm
      • Country of Origin
        USA

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      What happens after you enquire

      • 1

        Requirement review

        We review the part number, quantity and delivery requirements and ask for any missing details.
      • 2

        Quotation and availability

        We confirm the proposed item, condition, availability, price and estimated lead time in the quotation.
      • 3

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      Technical specifications for 190501-21-00-01

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring Systems
      • Spare Part Number:
        190501-21-00-01
      • Weight:
        0.35 kg
      • Tariff Code:
        8537101190
      • Product series:
        190501 Velomitor CT
      • Measured quantity:
        Casing vibration velocity
      • Mounting option 21:
        3/8-24 to 1/2-14 NPT adapter
      • Connection option 00:
        MIL-C-5015 connection interface
      • Approval option:
        01; verify supplied marking and installation conditions
      • Sensitivity:
        3.94 mV/mm/s (100 mV/in/s), ±5%
      • Frequency response (±1 dB):
        3 Hz to 900 Hz
      • Frequency response (±3 dB):
        1.5 Hz to 1 kHz
      • Peak velocity range:
        63.5 mm/s (2.5 in/s)
      • Transverse response:
        Less than 5% of axial sensitivity
      • Amplitude linearity:
        ±2% to 63.5 mm/s peak
      • Output bias:
        10.1 V dc ±1.0 V dc, Pin A relative to Pin B
      • Dynamic output impedance:
        Less than 400 ohms, typical
      • Broadband noise (1.5 Hz-1 kHz):
        0.229 mm/s (0.009 in/s) peak
      • Electronics grounding:
        Isolated from case
      • Operating temperature:
        -40 °C to +85 °C
      • Storage temperature:
        -40 °C to +100 °C
      • Case material:
        316L stainless steel
      • Connector construction:
        2-pin 316L stainless steel, top-mounted
      • Mounting torque:
        4.5 N m ±0.6 N m
      • Mounting orientation:
        Any orientation
      • Humidity limit:
        100% condensing, non-submerged
      • Shock limit:
        5000 g peak, maximum
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • Slow fan rotation produces vibration at frequencies below the useful range of many general-purpose casing sensors. Bently Nevada 190501-21-00-01 extends velocity measurement into this low-frequency region for cooling-tower and air-cooled heat-exchanger fans.
      Low-frequency response: 1.5 Hz to 1 kHz within ±3 dB
      Velocity sensitivity: 3.94 mV/mm/s, ±5%
      Connection arrangement: Top-mounted two-pin MIL-C-5015 interface
      Housing construction: 316L stainless steel case
      Choose a bearing-housing or casing location that transmits the rotor vibration of interest. A weak mechanical transmission path can make a casing reading unsuitable for assessing the rotor condition.

      The sensor can also measure the vibration frequencies generated by the fan motor and speed reducer. Evaluate the required frequency band, mounting arrangement and signal-conditioning channel together before commissioning.
      Controller platform reference: 190501 Velomitor CT specifications. Follow the applicable installation instructions and approved drawings.
      Bently Nevada 190501-21-00-01 Manuals & Downloads. Use the manufacturer-original excerpt and the Apter Power preparation guide for the actual product configuration.
      The first file is an unchanged manufacturer-original page excerpt; the second is an Apter Power preparation reference. Follow the applicable installation instructions and approved site procedures.
      System and supply context: Bently Nevada 190501-21-00-01 is a Velomitor CT casing-vibration velocity transducer for low-speed fan assemblies. The 21-00 configuration uses a 3/8-24 to 1/2-14 NPT adapter and a MIL-C-5015 connection.

      Platform applications: Select the measurement point, frequency band and monitoring channel for the actual fan, motor or speed-reducer arrangement. Confirm the supplied approval marking and site installation conditions before use.
      Follow user guide 125389 and the site isolation procedure. Match the supplied sensor marking and approved installation conditions before commissioning.
      Choose the measurement point

      Mount on the bearing housing or casing where rotor vibration is transmitted effectively. Avoid flexible covers or locations dominated by unrelated structural motion.

      Match the adapter

      Confirm the option 21 interface: 3/8-24 to 1/2-14 NPT. Verify the machine connection and adapter engagement before fitting the sensor.

      Apply the mounting torque

      Use the specified 4.5 N m ±0.6 N m sensor mounting torque with the applicable installation procedure; do not transfer it to unrelated pipe fittings.

      Confirm polarity and cable

      Identify Pin A and Pin B and use the appropriate MIL-C-5015 mating connection. Select cable length and routing for the actual channel and installation conditions.

      Review operating exposure

      Keep the sensor within -40 °C to +85 °C in operation. Condensing humidity does not permit submersion; check the supplied approval marking separately.

      Verify the channel

      Check bias, velocity scaling, frequency band and response using an approved procedure. Assess high-frequency acceleration that could reduce the usable velocity range.

      Alternative Names

      Bently Nevada 190501-21-00-01 190501-21-00-01 velocity transducer

      Technical notes

      Reference conditions: Electrical parameters apply at +20 °C to +30 °C and 100 Hz unless otherwise stated. Vibration above 1 kHz exceeding 10 g peak can significantly reduce the stated velocity range.

      Connection and installation: Pin A is positive relative to Pin B for velocity from the base toward the top. Apply the user guide 125389 and the approved site procedure; confirm hazardous-area marking and installation drawing for the supplied unit.

      FAQ View All FAQ

      • What does mounting option 21 mean for 190501-21-00-01?
        It specifies a 3/8-24 to 1/2-14 NPT mounting adapter. Match the machine interface and the actual supplied adapter before installation; connection option 00 separately identifies the MIL-C-5015 electrical interface.
      • How does 190501-21-00-01 measure low-speed fan vibration?
        It measures casing vibration velocity with a response of 1.5 Hz to 1 kHz within ±3 dB. A suitable bearing-housing or casing mounting location must transmit rotor vibration effectively; the sensor is intended for fan assemblies operating at or above 90 rpm.
      • Which limits affect the 190501-21-00-01 velocity range?
        The specified range is 63.5 mm/s peak. Vibration components above 1 kHz exceeding 10 g peak can significantly reduce that range, so assess the high-frequency environment as well as the velocity level.
      • What cable and accessories are included with 190501-21-00-01?
        The order uses connection option 00, the MIL-C-5015 interface, rather than option 99 with an included 32-foot cable. Supply scope is confirmed in quotation; have the adapter, mating cable, connector accessories and documents listed individually.
      • Can photos verify the offered 190501-21-00-01 configuration?
        Request current nameplate, connector, mounting-base and adapter photos. Compare the full order code, serial marking and approval marking with the installed requirement, and record the agreed configuration and New, original product condition in the quotation.
      • How can I confirm the dispatch schedule for 190501-21-00-01?
        Send the required quantity, destination and required date. Confirm the available quantity, planned dispatch date and whether lead time starts from order acceptance or payment; a delivery estimate does not establish that units are in stock.
      • Which approval documents should accompany 190501-21-00-01?
        Specify the documents required by the intended installation and match them to the supplied approval marking. Confirm availability of the relevant certificate, instructions and any requested inspection records in the quotation; an approval option alone does not include a document package.
      • What warranty applies to 190501-21-00-01 and its accessories?
        Have the warranty period, scope, exclusions and claim process confirmed in the offer. Clarify coverage for the transducer and any separately quoted adapter or cable, and review installation-related exclusions before placing the order.
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