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Help CenterBently Nevada 330180-50-00 Eddy Current Preamplifier
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Bently nevada 330180-50-00 Eddy current preamplifier
The 330180-50-00 is an eddy current preamplifier for Bentley Nevada's 3300 XL series. Its core function is to provide high-frequency excitation, signal conditioning, and linear conversion for 5mm/8mm eddy current probes in the 3300/3300 XL series. It outputs a voltage signal proportional to the probe-target gap, is compatible with system lengths up to 5m, and is used for non-contact measurements of shaft vibration, axial displacement, key phase/speed, etc., in rotating machinery. It is a core signal processing unit for condition monitoring and safety protection of critical equipment in industries such as power, petrochemical, and metallurgy.
Model Code and Core Parameters
Item Parameters
Product Model 330180-50-00 (3300 XL Series Preamplifier)
System Length 5m (probe + extension cable total length), suitable for standard installation scenarios
Compatible Probes 3300/3300 XL Series 5mm/8mm Eddy Current Probes, compatible with reverse/upright mounting probes
Output Characteristics Sensitivity 7.87V/mm (200mV/mil), Linear Range 2mm (10–90mils, -1~-17Vdc output)
Power Supply Requirements -17.5~-26Vdc (without safety barrier), -23~-26Vdc (with safety barrier), Maximum Current 12mA
Operating Temperature -35℃~+85℃, Storage Temperature -35℃~+100℃, suitable for wide industrial temperature conditions
Installation Method Panel mounting, A308 aluminum housing, weight 255g, vibration-resistant and electromagnetic interference-resistant
Frequency response 0~10kHz (±3dB), suitable for dynamic vibration and static displacement measurement
Compliance standards: Meets API 670 (4th) requirements for mechanical configuration, linearity, and temperature stability.
Email: xmxblynn@163.com
Phone: +86 18059884797
Core Functions
Signal Excitation and Conditioning: An integrated high-frequency oscillator (approximately 2MHz) provides stable excitation to the probe coil, converting probe impedance changes into a measurable voltage signal while suppressing noise and interference.
Linear Conversion and Calibration: Internal circuitry enables linear gap-voltage conversion, ensuring a standard sensitivity of 7.87V/mm with an error ≤±5%, suitable for both static position and dynamic vibration measurements.
Wide-Temperature Stable Operation: Withstands ambient temperatures from -35℃ to +85℃, maintaining signal stability under high-temperature conditions such as those in steam turbines and gas turbines, meeting the long-term monitoring needs of industrial equipment.
System Compatibility and Integration: Seamlessly integrates with 3500/20 monitoring modules, 2300 series monitors, and System 1 software, supporting 4-20mA signal conversion and adapting to DCS/PLC systems.
Fault Diagnosis and Protection: Built-in open-circuit/short-circuit detection outputs alarm signals in case of abnormalities, working with the monitoring system to achieve equipment safety protection and fault early warning.
Functions, Applications, and Typical Scenarios
Shaft Vibration Monitoring: Measures radial vibration in equipment such as steam turbines, compressors, and generators, capturing fault characteristics such as imbalance, misalignment, and bearing wear, supporting predictive maintenance.
Axial Displacement Measurement: Monitors rotor axial movement, preventing shaft collisions and thrust bearing failure, triggering shutdown protection, and ensuring equipment safety.
Key Phase/Speed Monitoring: Generates phase reference signals using a key phase probe for vibration phase analysis and speed measurement, assisting in rotor dynamic balancing and fault location.
Diffusion and Eccentricity Measurement: Calculates rotor-stator diffusion and rotor eccentricity using static displacement data, adapting to equipment status monitoring during start-up and shutdown.
Safety Protection Interlock: Interlocks with the 3500/46M relay module, triggering audible and visual alarms or emergency shutdown when parameters exceed thresholds, reducing unplanned downtime losses.
Email: xmxblynn@163.com
Phone: +86 18059884797
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