The Vibro-Meter EA402 (913-402-000-013) is a high-temperature coaxial extension cable designed for TQ proximity measurement systems. Featuring robust FEP insulation and EMI shielding, this cable ensures precise signal transmission for vibration and displacement monitoring in steam turbines and industrial compressors.
The Vibro-Meter EA402 functions as a critical extension cable within the TQ series of proximity measurement systems, specifically designed to bridge the gap between a proximity transducer and a signal conditioner. This cable acts as a low-capacitance transmission line that preserves the integrity of high-frequency displacement signals. By utilizing a rugged coaxial construction, the EA402 ensures that the delicate bridge impedance of the sensor remains stable over long distances. Furthermore, the 913-402-000-013 variant features a specific length and protective sleeving tailored for industrial machinery monitoring. Consequently, this component is essential for accurately measuring vibration, speed, and axial position in large rotating equipment.
To withstand the rigorous conditions found in power plants and refineries, the EA402 utilizes a high-performance FEP (Fluorinated Ethylene Propylene) jacket. This material provides exceptional resistance against corrosive chemicals, high humidity, and extreme temperatures ranging from -55°C to +200°C. Additionally, the cable incorporates a dense metallic shield that actively suppresses electromagnetic interference (EMI) and radio frequency interference (RFI). Because signal noise can lead to false alarms in protection systems, this robust shielding is vital for maintaining a high signal-to-noise ratio. Moreover, the optional stainless steel flexible conduit offers mechanical protection against crushing or abrasion in high-traffic industrial areas.
Meggitt (Vibro-Meter) has engineered the EA402 with precision-machined miniature coaxial connectors to facilitate a secure and repeatable connection. These connectors feature a locking mechanism that prevents accidental disconnection due to machine vibration. In addition to its physical durability, the cable is electrically matched to the TQ402 and TQ412 transducers, which simplifies the calibration process of the entire measurement chain. As a result, maintenance teams can replace damaged cables without needing to recalibrate the associated IQS450 signal conditioner. This “plug-and-play” compatibility significantly reduces downtime during routine inspections of steam turbines, gas turbines, and large compressors.
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