3300 XL Rotary Position Transducer (RPT) - GE Energy Bently Nevada - #1

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Specifications and Ordering Information Part Number 146250-01 Rev. A (08/07) Page 1 of 5 Bently Nevada™ Asset Condition Monitoring 3300 XL Rotary Position Transducer (RPT) Description The 3300 XL Rotary Position Transducer (RPT) measures angular rotation. Its most common use is for measuring valve position on steam turbines. Valve position information is utilized to adjust inlet valves, determine operating efficiency and measure the load of the turbine. The 3300 XL RPT attaches to the end of a steam valve control shaft using a flexible coupling (not provided). The 3300 XL Rotary Position Transducer consists of a housing, cylinder and shaft, conduit fitting and a non-contacting eddy-current 3300 XL Proximity Transducer System. The 3300 XL probe views the precisely machined cylinder. As the steam turbine control valve opens or closes, the steam valve control shaft and the 3300 XL RPT cylinder rotate. This causes the gap voltage reading of the Proximity Transducer System to change. The change in the gap voltage is proportional to the change in valve opening. The 3300 XL RPT is available in three different rotational ranges to optimize its performance - 100 degrees, 200 degrees, or 300 degrees. It is compatible with our 3500/45 Position Monitors. The 3500/45 monitor and 3300 XL RPT utilize the advanced "Transducer OK" checking inherent in Bently Nevada eddy current proximity transducer measurements.