The Bently 330876-02-90-00-00Turbine Differential Expansion Measurement Probe Sensor for monitoring turbine turbine rotor and stator differential expansion measurements is a product of the Bently 3300XL 50mm Sensor System, which consists of a stand-alone probe, extension cable, and a 3300XL 50mm preamplifier, with an average sensitivity of 0.394V/mm, and a large diameter coil that gives the system a linear range of 27.9mm. The system has a linear range of 27.9 mm, due to this linear range, the Bently 3300XL 50mm sensor system is suitable for measuring differential expansion caused by differences in the expansion rates of the turbine rotor and stator on large steam turbines or rotor expansion Differential expansion measurements are achieved by two converging sensors that measure flanges or sloped surfaces at a distance from the thrust bearing.
The Bentley 330876-02-90-00-00 Turbine Differential Expansion Measurement Probe Sensor is mounted in such a way as to provide redundant measurements using two sensors mounted on the same side of the flange. If a total range of 28 mm to 56 mm is required, a compensating sensor is mounted on the opposite side of the target material such as the differential expansion flange. Use and storage temperatures -35°C to +200°C The Bently 3300XL 50mm is designed for use in the most demanding steam turbine environments. It can operate continuously and maintain accuracy at temperatures up to 200°C and can also withstand intermittent high temperatures up to 250°C. The Bently 3300XL 50mm probe is sealed front and rear, and the ClickLoc connector on the probe lead has a removable flange to help wrap the cable in a tight gap. The front unit is available in the same DIN rail unit or conventional panel mounting. Sensor systems are typically calibrated with a Bentley Eddy Probe Flow Calibrator TK-3E, with preamplifiers such as 330878-51-00 inputs receiving signals from a non-contacting 3300 XL 5mm converging probe and extension cable 330877-040-36-00 connected to a Bentley 3500/45 module.
330903 3300 NSv Probe, M8 x 1 thread
330904 3300 NSv Probe, M8 x 1 thread
330905 3300 NSv Probe, M10 x 1 thread
330910 3300 NSv Probe, M10 x 1 thread
330902 3300 NSv Probe, 1/4-28 UNF thread