Proximity Probe 330876-02-10-00-00 3300 XL Bently Nevada Vietnam
Price: Contact
Brand: Bently Nevada
Category: Probe - Đầu dò
Supplier: ansvietnam
Origin: USA
0911472255Proximity Probe 330876-02-10-00-00 3300 XL Bently Nevada Vietnam
Designed specifically for differential expansion applications in aggressive steam environments
GE Energy's new Bently Nevada 3300 XL 50 mm trans-ducer system is a highly robust and reliable replacement for all of our older 50 mm proximity probe systems - including the 7200 series 50 mm and the 130713 DE (Differential Expansion) transducer systems. It offers greater moisture resistance and a broader temperature range without compromising the linearity and accuracy required by differential expansion applications. The new system also delivers the longest linear range in our family of Bently Nevada proximity transducers, enabling displacement of up to 1.1 inches (1100 mils) to be addressed, and allowing it to be used wherever an extended-range measurement is required, whether for DE or other applications.
Turbine Differential Expansion - A Vital Measurement
Large steam turbines, and certain gas turbines, exhibit non-uniform thermal growth rates of rotor and casing during machine startups and shutdowns. If not care-fully monitored and controlled, excessive differential expansion can cause rotor and casing to rub, with catastrophic results. For this reason, the DE measure-ment is a critical component of a Turbine Supervisory Instrumentation (TSI) system, and operators depend on reliable DE information to safely start and stop their turbines.
The DE measurement poses particular challenges for a transducer system, since the measurement is made in environments where elevated temperatures and steam concentrations are present. The DE measurement also typically involves relative displacements that can exceed 1 inch (25.4 mm). This necessitates a transducer with an extended linear range. Further, turbines requir-ing a DE measurement are typically found in power generation applications where lost production revenues and contract penalties can be very expensive. As such, a transducer failure has serious economic consequences
