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        3300/47

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor provides extended-range differential expansion measurement using two proximity probes in a complementary configuration, enabling accurate monitoring of large rotating machinery.
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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 3300/47

        • Manufacturer:
          Bently Nevada
        • Part Number:
          3300/47
        • Product Family:
          3300 System
        • Inputs Signal:
          Accepts two proximity probe transducer signals.
        • Input Impedance:
          10 k Ω.
        • Signal Scale Factor:
          100 mV/mil (4 V/mm), 20 mV/mil (0.787 V/mm) or 10 mV/mil (3.92 V/mm). Jumper-selectable.
        • Power Consumption:
          Nominal consumption of 1.5 watts.
        • Accuracy:
          Within ±0.33% of full-scale typical, ±1% maximum.
        • Output Impedance:
          100 Ω.
        • 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:
          1.1 kg
        • Estimated shipping dimensions:
          5.1x20.3x33cm
        • 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

        Features:

        • Complementary Dual Probe Configuration Extends Differential Expansion Monitoring Range
        • Jumper-Selectable Signal Scale Factors for Flexible Measurement Adjustment
        • High Accuracy Monitoring With Four Alarm Setpoints for Reliable Machine Protection
        Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor is engineered to measure differential expansion in large rotating machines where conventional single-probe installations cannot provide sufficient monitoring range. It is widely used in turbines, compressors, and other heavy industrial equipment where precise measurement of rotor movement relative to the casing is essential for safe operation.

        Unlike traditional systems that rely on a single proximity probe, the Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor uses two proximity probes arranged in a complementary configuration to observe the same rotor collar. When shaft movement exceeds the linear range of one probe, the displacement enters the operating range of the second probe, effectively extending the measurement capability and allowing monitoring ranges that can reach up to twice that of a single transducer setup.

        The Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor accepts two proximity probe signals with an input impedance of 10 kΩ and provides jumper-selectable scale factors of 100 mV/mil (4 V/mm), 20 mV/mil (0.787 V/mm), or 10 mV/mil (3.92 V/mm). With typical accuracy within ±0.33% of full scale, low nominal power consumption of 1.5 W, and reliable operation in temperatures from 0°C to +65°C, the monitor delivers dependable performance for continuous machinery condition monitoring.

        The 3300/47 Bently Nevada Complementary Input Differential Expansion Monitor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor 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 3300/47 Complementary Input Differential Expansion Monitor Specs

        General

        • Manufacturer GE / Bently Nevada
        • Model 3300/47
        • Condition New Original ready stock
        • Product Family 3300/47-12-04-02-00,3300/47-08-03-01-00,3300/47-09-02-02-00
        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.
        View as PDF
        Description
        The Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor is designed to solve a common challenge in large rotating machines where standard proximity probe installations cannot provide sufficient measurement range. In turbines, compressors, and other heavy rotating equipment, differential expansion between rotor and casing can exceed the linear range of a single probe. The Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor addresses this problem by using two proximity probes arranged in a complementary configuration to significantly extend the monitoring range.

        In this configuration, two proximity probes observe the same rotor collar. When the shaft movement exceeds the linear range of one probe, it simultaneously enters the measurement range of the second probe. This complementary arrangement allows the Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor to provide a monitoring range up to twice that of a single transducer system. This makes the 3300/47 particularly suitable for extremely large machines where conventional single-probe measurement methods are insufficient.

        The Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor accepts two proximity probe input signals with an input impedance of 10 kΩ and provides selectable signal scale factors of 100 mV/mil (4 V/mm), 20 mV/mil (0.787 V/mm), or 10 mV/mil (3.92 V/mm) through jumper configuration. Measurement accuracy is typically ±0.33% of full scale and ±1% maximum, ensuring reliable differential expansion monitoring for critical rotating equipment.

        Designed for continuous industrial operation, the Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor consumes only 1.5 watts nominal power and provides an output impedance of 100 Ω for stable signal transmission. It operates within an environmental range of 0°C to +65°C and can be stored between -40°C and +85°C, while tolerating up to 95% relative humidity (noncondensing). For operational safety, the monitor includes four alarm setpoints, consisting of two over alarms and two under alarms, allowing operators to detect abnormal differential expansion conditions quickly.

        With its complementary probe architecture and extended monitoring capability, the Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor provides a practical and reliable solution for differential expansion measurement in large rotating machinery where conventional probe installations cannot meet the required measurement range.
        Alternative Names
        3300/47-09-03-01-00 3300/47-08-02-01-00 3300/47-07-01-02-00 3300/47-10-04-01-00 3300/47-06-02-02-00 3300/47-05-03-01-00 3300/47-11-01-02-00
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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
        How accurate is the Bently Nevada 3300/47 measurement system?
        The monitor provides ±0.33% of full-scale typical accuracy and ±1% maximum accuracy, ensuring reliable differential expansion readings.
        Why are two proximity probes used in the 3300/47 configuration?
        Two probes are arranged in a complementary layout so that when the shaft movement exceeds the linear range of one probe, it enters the measurement range of the second probe, effectively extending the monitoring range.
        What type of input signals does the 3300/47 monitor accept?
        The Bently Nevada 3300/47 Complementary Input Differential Expansion Monitor accepts two proximity probe transducer signals, enabling complementary measurement of rotor movement.
        How quickly can the Bently Nevada 3300/47 be shipped?
        Orders are typically dispatched within 1–3 business days depending on logistics arrangements.

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