The Bently Nevada 330850-51-05 is part of the 3300 XL 25 mm proximity transducer system, designed for differential expansion measurement with extended linear range and reliable performance in steam turbine and large rotating machinery applications.
Specifications
Proximitor Sensor Input:Accepts one noncontacting 3300 XL 25 mm Proximity Probe and Extension Cable.
Power:Requires -17.5 Vdc to -26 Vdc without barriers at 12 mA maximum consumption, -23 Vdc to -26 Vdc with barriers. Operation at a more positive voltage than -23.5 Vdc can result in reduced linear range.
Supply Sensitivity:Less than 2 mV change in output voltage per volt change in input voltage.
Output resistance:50 W
Operating Temperature:-51°C to +100°C (-60°F to +212°F)
Dimension:8.8x3.6x7cm
Weight:0.22kg
FAQ
Q1: What is the main purpose of the Bently Nevada 330850-51-05?
A1: It is used to measure differential expansion in large rotating machinery such as steam turbines.
Q2: What linear range does the 25 mm transducer system provide?
A2: It offers a linear range of up to 12.7 mm (500 mils) for extended measurement capability.
Q3: What type of output signal does the system generate?
A3: It produces an output proportional to displacement, typically at 0.787 V/mm (20 mV/mil).
Q4: How is differential expansion typically measured with this system?
A4: It uses two proximity probes positioned to monitor a collar or ramp on the rotor for comparative readings.
Q5: What installation features does the Proximitor Sensor include?
A5: It supports DIN-rail or panel mounting and uses SpringLoc terminals for quick and secure wiring connections.






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