Bently Nevada 3300/46-46-04-02-01 3300 system monitor module, industrial vibration and condition monitoring hardware
Bently Nevada 3300/46-46-04-02-01 monitor module, showing front panel label, display area, and controls
Bently Nevada 3300/46-46-04-02-01 3300 system module, rack-mounted equipment with connector and casing details
Bently Nevada 3300/46-46-04-02-01 3300 system monitor module, industrial vibration and condition monitoring hardware
Bently Nevada 3300/46-46-04-02-01 monitor module, showing front panel label, display area, and controls
Bently Nevada 3300/46-46-04-02-01 3300 system module, rack-mounted equipment with connector and casing details
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  • Lifecycle Status

    Discontinued / Obsolete by OEM
    Vintage rotating machinery monitoring relies on specialized inventory from Apter Power, supplying hard-to-find Bently Nevada hardware to ensure continuous operational safety.

3300/46-46-04-02-01

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The Bently Nevada 3300/46-46-04-02-01 Ramp Differential Expansion Monitor delivers precise differential expansion measurement using ramp surfaces, ideal for large machines with limited probe mounting space.
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Technical specifications for 3300/46-46-04-02-01

  • Manufacturer:
    Bently Nevada
  • Part Number:
    3300/46-46-04-02-01
  • Product Family:
    3300 System
  • Product Type:
    Ramp Differential Expansion Monitor
  • Stock:
    1
  • Transducer Input Option:
    35 mm
  • Alarm Relay Option:
    Hermetically-sealed
  • Agency Approval Option:
    CSA/NRTL/C
  • 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:
    9031809090
  • 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 Installation Performance Firmware & Updates

Features:

  • Provides Precise Differential Expansion Measurement Using Ramp Surfaces
  • Supports Hermetically-Sealed Alarm Relays With CSA/NRTL/C Approval
  • Operates Reliably From 0°C To +65°C And Can Be Stored Between -40°C To +85°C
The Bently Nevada 3300/46-46-04-02-01 Ramp Differential Expansion Monitor is engineered to solve the challenges of measuring differential expansion in very large machines where conventional probe mounting is difficult. By using ramp surfaces, the assembly allows increased monitoring range with smaller proximity probes, providing flexibility in probe installation that standard collar methods cannot achieve.

This monitor assembly uses two proximity probes to capture ramp surface movement on the rotor, accurately detecting both magnitude and direction of differential expansion. The 3300/46-46-04-02-01 includes four configurable alarm setpoints (two over and two under) to alert operators of critical deviations, enhancing safety and machine reliability.

With output impedance at 100 Ω and typical accuracy within ±0.33% of full scale (maximum ±1%), the 3300/46-46-04-02-01 delivers precise measurements even under challenging industrial conditions. Its hermetically-sealed alarm relays and CSA/NRTL/C approvals ensure durability and compliance, making it ideal for turbines, compressors, and large rotating equipment where high precision and flexible installation are required.

The 3300/46-46-04-02-01 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 3300/46-46-04-02-01 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 3300/46-46-04-02-01 Ramp Differential Expansion Monitor Specs

General

  • Manufacturer GE / Bently Nevada
  • Model 3300/46-46-04-02-01
  • Condition New Original ready stock
  • Product Family 3300/46-46-03-02-01,3300/46-46-02-02-01,3300/46-46-01-02-01
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.
  • Dual Probe Input: This monitor accepts signals from two eddy current probes (Channel A and Channel B), calculating the actual axial displacement by measuring changes in ramp height.
  • Rack Mounting: Installed in a Bently Nevada 3300 standard rack. Rack position 1 is fixed for power, position 2 for the system monitor, and the 3300/46 can be installed in any position from position 3 to 14.
  • Field Adjustment: Calibration is performed via internal jumpers and potentiometers on the front panel. During installation, the test point voltage must be adjusted using the GAP switch and the system monitor to ensure the probe is in its linear operating range.
  • Extended Measurement Range: Utilizing the ramp principle, a large axial displacement can be monitored with a smaller range probe, improving installation flexibility.
  • High Precision Processing: Signal conditioning accuracy is typically within ±0.33% of the full range, with a maximum error not exceeding ±1%.
  • Self-diagnostic function: Built-in continuous self-test function. When a sensor or cable malfunctions (Not OK), the recorder output can be automatically clamped to 2 mA to allow the control system to distinguish fault signals from normal lower limit signals.
  • Firmware Type: The module's firmware is stored in EPROM or microprocessor ROM. The 3300/46 is a module that supports SDI/DDI (Serial Data Interface/Dynamic Data Interface) protocols and can communicate with modern host computers.
  • Version Identification: The current module's firmware version number can be read while the system is rack-mounted using the 3300/03 system monitor.
  • Hardware Lifecycle: As the 3300 system is nearing the end of its lifecycle, the manufacturer recommends considering integration into the 3500 system or using System 1 software for more advanced predictive maintenance during major upgrades.
Description
The Bently Nevada 3300/46-46-04-02-01 Ramp Differential Expansion Monitor is specifically designed to handle the challenges of measuring differential expansion in extremely large machines. Many industrial rotors do not have convenient locations for conventional large proximity probes, and some machines require measurement ranges beyond standard transducer linearity. This monitor allows users to measure differential expansion reliably with standard transducers while maintaining high accuracy.

Using two proximity probes aimed at ramp surfaces on the rotor, the 3300/46-46-04-02-01 can detect both the magnitude and direction of differential expansion. The use of ramp surfaces increases the effective measurement range while requiring smaller transducers, offering a practical solution where traditional collar-based methods are not feasible. Compared to conventional monitors, this model provides more flexibility in mounting location and superior measurement range.

The monitor's LCD clearly displays real-time expansion values, allowing operators to assess both magnitude and direction at a glance. Four configurable alarm setpoints (two over and two under) ensure that critical deviations are immediately detected, enhancing machine safety and operational reliability.

With hermetically-sealed alarm relays, the 3300/46-46-04-02-01 is suited for harsh industrial environments. It operates within a temperature range of 0°C to +65°C (+32°F to +150°F) and can be stored safely between -40°C to +85°C (-40°F to +185°F). Output impedance is standardized at 100 Ω, with typical accuracy within ±0.33% of full-scale and a maximum of ±1%. Additionally, this model carries CSA/NRTL/C agency approval, ensuring compliance with key safety standards.

Overall, the Bently Nevada 3300/46-46-04-02-01 combines measurement precision, flexible installation, and robust alarm capabilities, making it an ideal choice for large-scale turbine, generator, and compressor applications where differential expansion monitoring is critical.
Alternative Names
3300/46-46-04-02-00 3300/46-46-04-00-01 3300/46-46-04-01-01 3300/46-46-04-03-01 3300/46-46-04-04-01 3300/46-46-04-02-0I 33OO/46-46-O4-O2-O1 33004646040201
Technical notes
The Bently Nevada 3300/46-46-04-02-01 provides an alternate measurement technique that allows increased monitoring ranges where standard collar methods are impractical. With an input impedance of 10 kΩ, this module utilizes dual proximity probes to efficiently observe rotor ramp surfaces and optimize mounting flexibility.
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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 Bently Nevada 3300/46-46-04-02-01?
Measurement accuracy remains within ±0.33% of full scale under typical conditions, with a maximum deviation of ±1%.
Can Bently Nevada 3300/46-46-04-02-01 operate with a 35 mm transducer?
Yes. The specified transducer input option supports a 35 mm measurement arrangement.
Does Bently Nevada 3300/46-46-04-02-01 include a sealed alarm relay?
Yes. A hermetically sealed alarm relay provides dependable switching performance in industrial monitoring applications.
Which agency approval applies to Bently Nevada 3300/46-46-04-02-01?
CSA/NRTL/C approval supports installation in applications requiring recognized Canadian and North American certification.