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3300/46

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The Bently Nevada 3300/46 Ramp Differential Expansion Monitor enables precise measurement of differential expansion in large rotating machinery using ramp surfaces with standard proximity probes.
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Technical specifications for 3300/46

  • Manufacturer:
    Bently Nevada
  • Part Number:
    3300/46
  • Product Family:
    3300 System
  • Voltage Compliance (current outputs):
    0 to +12 Vdc range across load. Load resistance is 0 to 600 Ω when using +4 to +20 mA option.
  • Inputs Signal:
    Accepts two proximity probe transducer signals.
  • Input Impedance:
    10 k Ω.
  • Signal Scale Factor:
    100 m/mil (4 V/mm), 20 mV/mil (0.787 V/mm) or 10 mV/mil (3.92 V/mm). Jumperselectable.
  • 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).
  • Weight:
    1.4 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:

  • Accepts Two Proximity Probe Signals To Measure Differential Expansion Accurately
  • Provides Magnitude And Direction Of Expansion With Four Configurable Alarm Setpoints
  • Uses Ramp Surface Targets To Extend Monitoring Range And Allow Flexible Transducer Placement
The Bently Nevada 3300/46 is engineered for large rotating machinery where traditional differential expansion measurement is challenging or where space constraints limit transducer placement. By utilizing ramp surfaces on the rotor, it enables accurate observation of differential expansion with standard proximity probes, offering measurement ranges beyond conventional methods.

This monitor features selectable signal scale factors of 100 m/mil (4 V/mm), 20 mV/mil (0.787 V/mm), and 10 mV/mil (3.92 V/mm), an input impedance of 10 kΩ, and an output impedance of 100 Ω. Its nominal power consumption is only 1.5 watts, and accuracy is within ±0.33% of full scale typically, with a maximum deviation of ±1%. Voltage compliance supports 0–12 Vdc across loads up to 600 Ω using the +4 to +20 mA option.

Designed for industrial environments, the 3300/46 operates from 0°C to +65°C (+32°F to +150°F), can be stored from -40°C to +85°C (-40°F to +185°F), and withstands relative humidity up to 95% noncondensing. The LCD provides clear visual feedback of both expansion magnitude and direction, while four alarm setpoints (two over and two under) ensure timely alerts, making it ideal for turbines, compressors, and other large-scale rotating equipment.

The 3300/46 Bently Nevada Ramp 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 3300/46 Ramp 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 3300/46 Ramp Differential Expansion Monitor Specs

General

  • Manufacturer GE / Bently Nevada
  • Model 3300/46
  • Condition New Original ready stock
  • Product Family 3300/46-46-04-02-01,3300/46-08-03-01-00,3300/46-07-03-00-00
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.
Description
The Bently Nevada 3300/46 Ramp Differential Expansion Monitor is designed to solve the challenges of differential expansion monitoring in extremely large machines where conventional transducer placement or collar measurements are impractical. By using ramp surfaces on rotors, this monitor extends the measurement range beyond the linear capabilities of standard proximity probes, allowing for reliable and accurate data collection even in space-constrained environments.

This monitor accepts two proximity probe transducer signals and features a selectable signal scale factor of 100 m/mil (4 V/mm), 20 mV/mil (0.787 V/mm), or 10 mV/mil (3.92 V/mm), making it adaptable to various machine sizes and monitoring requirements. Its input impedance is 10 kΩ, output impedance is 100 Ω, and nominal power consumption is just 1.5 watts, ensuring efficient operation without compromising performance. Accuracy is within ±0.33% of full scale typically, with a maximum deviation of ±1%.

The 3300/46 displays both the magnitude and direction of differential expansion directly on its LCD screen, and supports four alarm setpoints (two over and two under alarms), enabling early detection of abnormal expansion conditions. Its voltage compliance for current outputs ranges from 0 to +12 Vdc, supporting load resistances up to 600 Ω when using the +4 to +20 mA option.

Operating temperatures from 0°C to +65°C (+32°F to +150°F) and storage temperatures from -40°C to +85°C (-40°F to +185°F), along with relative humidity tolerance up to 95% noncondensing, make the Bently Nevada 3300/46 suitable for demanding industrial environments. Compared to other expansion monitors, its use of ramp surfaces allows smaller transducers to cover larger measurement ranges, giving it a distinct advantage in flexibility and installation options.

Whether used in turbines, compressors, or other large rotating equipment, the Bently Nevada 3300/46 Ramp Differential Expansion Monitor ensures precise, reliable differential expansion monitoring with customizable alarm thresholds, robust environmental tolerance, and simple integration into existing systems.
Alternative Names
3300/46-07-04-00-00 3300/46-08-04-01-00 3300/46-09-04-02-00 3300/46-07-02-00-00 3300/46-08-02-01-00 3300/46-09-02-02-00
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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.
How accurate is the Bently Nevada 3300/46?
Typical accuracy is within ±0.33% of full scale, with a maximum of ±1%.
What are the selectable signal scale factors?
Jumpers allow 100 m/mil (4 V/mm), 20 mV/mil (0.787 V/mm), or 10 mV/mil (3.92 V/mm) settings.
What environmental conditions can the 3300/46 operate in?
Operating temperature: 0°C to +65°C, storage: -40°C to +85°C, relative humidity up to 95% noncondensing.
Are there discounts for bulk orders?
Yes, we offer competitive pricing and volume discounts for multiple units of the 3300/46.

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