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        3300/50

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Bently Nevada 3300/50 Tachometer is designed to continuously measure shaft rotational speed and acceleration, providing reliable data outputs and alert functionality for industrial monitoring applications.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 3300/50

        • Manufacturer:
          Bently Nevada
        • Part Number:
          3300/50
        • Product Family:
          3300 System
        • Inputs Transducers:
          Bently Nevada 3300, 7200, or 3000 series proximity probes; Magnetic pickups.
        • Signal:
          Accepts two transducer signals. The monitor can operate with any combination of the above inputs.
        • Input Impedance:
          10 k Ω.
        • Output Impedance:
          100 Ω. Minimum load resistance is 10 k Ω.
        • Power Consumption:
          Nominal consumption is 2.5 watts.
        • Accuracy:
          Within ±1 rpm for speed display and within 20 rpm/min for rotor acceleration display.
        • Manual Threshold:
          User-selectable from 0 to -18 Vdc.
        • Hysteresis:
          User-selectable from 0.2 to 2.0 Volts.
        • Operating Temperature:
          0°C to +65°C (+32°F to +150°F).
        • Storage Temperature:
          -40°C to +85°C (-40°F to +185°F).
        • Relative Humidity:
          To 95%, noncondensing.
        • Weight:
          1.5 kg
        • Estimated shipping dimensions:
          5.1x20.3x30.5cm
        • Tariff Code:
          6115291000
        • 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 Interoperability Configuration & Programming Communication

        Features:

        • Accepts Two Transducer Signals From Bently Nevada 3300, 7200, Or 3000 Series Probes
        • Provides Accurate Shaft Speed And Acceleration Measurement With ±1 Rpm Accuracy
        • Offers Adjustable Manual Threshold And Hysteresis For Flexible Industrial Monitoring
        The Bently Nevada 3300/50 Tachometer is designed to provide continuous monitoring of shaft rotational speed and rotor acceleration in critical machinery. It works with Bently Nevada 3300, 7200, or 3000 series proximity probes and magnetic pickups, accepting up to two transducer signals simultaneously. Internal voting logic reduces the risk of false readings from a single transducer failure, ensuring reliable operation for industrial applications.

        Unlike other tachometers, the Bently Nevada 3300/50 Tachometer delivers proportional voltage or current outputs suitable for data logging and chart recording. Its input impedance of 10 kΩ and output impedance of 100 Ω maintain signal integrity, while nominal power consumption of 2.5 watts ensures energy-efficient operation. Manual threshold adjustment from 0 to -18 Vdc and hysteresis from 0.2 to 2.0 volts provide flexibility in system integration.

        The Bently Nevada 3300/50 Tachometer is robust, operating from 0°C to +65°C and storing safely between -40°C and +85°C, with humidity tolerance up to 95% non-condensing. While it is ideal for monitoring and alerting purposes, it is not intended for overspeed protection or speed control systems; for those applications, Bently Nevada 3300/53 or 3500/53 monitors should be used. This makes the 3300/50 a precise, reliable, and versatile solution for industrial shaft monitoring.

        The 3300/50 Bently Nevada Tachometer may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        Bently Nevada 3300/50 Tachometer 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 3300/50 Tachometer Specs

        General

        • Manufacturer GE / Bently Nevada
        • Model 3300/50
        • Condition New Original ready stock
        • Product Family 3300/50-08-04-01-00,3300/50-07-04-00-01,3300/50-06-03-02-00
        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.
        • Sensor Compatibility: Supports various sensor inputs, most commonly the 3300 XL series eddy current probes (as keyphasor sensors) and magnetoelectric speed sensors (magnetic pickups).
        • System Integration: This module is installed within the 3300 standard rack, sharing the backplane and power supply with vibration, temperature, and displacement monitors.
        • Signal Forwarding: It can forward the input keyphasor signal through the rack backplane to other monitors within the same rack (such as vibration monitors) for synchronous sampling and order analysis, eliminating the need for separate keyphasor probes for each module.
        • Multi-Mode Selection: Configurable to four operating modes via internal jumpers: RPM (Rotation Speed): Standard speed display. Rotor Expansion: Measured with specific sensors. Zero Speed: Used to monitor turning gear status. Reverse Rotation: Requires dual probe input to prevent pump or turbine reversal.
        • Alarm Settings: Supports setting "Danger" and "Alert" limits, commonly used for overspeed protection.
        • Pulses per Revolution: Supports setting the number of pulses per revolution (PPM) via DIP switches or jumpers (e.g., single-phase, multi-gear), ensuring accurate displayed RPM values.
        • Buffered Outputs: The front panel provides a Keyphasor signal buffer interface for easy acquisition of raw pulse waveforms via oscilloscopes or external analyzers (such as ADRE systems).
        • Analog Outputs: Provides 4-20 mA or 0-10 Vdc recorder outputs for real-time transmission of speed data to DCS or PLC for process control.
        • Digital Interface: Module data can be uploaded via the SDI (Serial Data Interface) protocol through the rack-mounted 3300/03 system monitor, enabling System 1 software to obtain accurate machine operating speeds.
        • Relay output: Equipped with an alarm relay, which can directly activate when overspeeding or reaching a specific set point to perform mechanical interlock protection.
        View as PDF
        Description
        The Bently Nevada 3300/50 Tachometer is engineered to address precise rotational speed and acceleration monitoring challenges in critical machinery. It accepts inputs from Bently Nevada 3300, 7200, or 3000 series proximity probes and magnetic pickups, allowing flexibility in transducer selection while ensuring accurate monitoring under diverse operating conditions. By supporting two transducer inputs simultaneously, the 3300/50 Tachometer incorporates internal voting logic to minimize false indications from a single transducer failure.

        Unlike typical single-channel tachometers, the Bently Nevada 3300/50 Tachometer provides a proportional voltage or current output on its rear terminal strip, enabling integration with data logging, chart recording, and alert annunciation systems. With an input impedance of 10 kΩ and output impedance of 100 Ω, it maintains stable signal integrity and minimal load interference. The unit’s nominal power consumption is 2.5 watts, making it energy-efficient compared to similar monitoring devices.

        The 3300/50 Tachometer operates with high precision, offering speed display accuracy within ±1 rpm and rotor acceleration display within 20 rpm/min. Manual threshold is user-selectable from 0 to -18 Vdc, while hysteresis can be adjusted from 0.2 to 2.0 volts, providing flexible configuration for varied monitoring scenarios. Its robust design supports an operating temperature range of 0°C to +65°C and storage from -40°C to +85°C, with relative humidity tolerance up to 95%, non-condensing, making it suitable for harsh industrial environments.

        It is important to note that the Bently Nevada 3300/50 Tachometer is not intended as an independent speed control or overspeed protection device. It does not provide the protective redundancy or response speed required for such applications. For machinery overspeed protection, Bently Nevada recommends 3300/53 or 3500/53 Electronic Overspeed Detection Monitors. Compared with conventional tachometers, the 3300/50 offers superior transducer input flexibility, precise internal voting logic, and reliable alert outputs, making it ideal for integration into existing industrial monitoring and diagnostic systems.

        By selecting the Bently Nevada 3300/50 Tachometer, industries benefit from a highly reliable, energy-efficient, and precise solution for shaft speed and acceleration monitoring, ensuring enhanced operational insight and reduced risk of false alerts.
        Alternative Names
        3300/50-01-01-00-00 3300/50-02-01-00-00 3300/50-03-02-01-00 3300/50-04-02-00-01 3300/50-09-01-02-01 3300/50-10-02-01-00
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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.
        VIEW ALL FAQS
        What types of transducers can the 3300/50 Tachometer accept?
        It can accept Bently Nevada 3300, 7200, or 3000 series proximity probes and magnetic pickups.
        How many transducer inputs does the 3300/50 support?
        The Bently Nevada 3300/50 Tachometer accepts two transducer signals simultaneously with internal voting logic to minimize false readings.
        What is the input impedance of the 3300/50 Tachometer?
        The input impedance is precisely 10 kΩ.

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