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　　CA134 144-134-000-611 Other Names:

　　Piezoelectric Sensor CA134 144-134-000-611

　　CA134 144-134-000-611 Vibration Monitor

　　High Temperature Accelerometer CA134 144-134-000-611

　　Technical Characteristics and Structure

　　Manufacturer: Vibro-Meter GmbH (founded in 1952), Switzerland, specializing in rotating machinery protection and monitoring systems, especially widely used in aerospace (such as Boeing and Airbus), power, and petrochemical fields. Their vibration monitoring systems have improved MTBF (Mean Time Between Failures) from hundreds of hours to thousands of hours.

　　Piezoelectric Principle: Based on the piezoelectric effect, mechanical vibration acceleration is converted into charge/voltage signals through piezoelectric crystals (such as quartz and PZT ceramics). Typical sensitivity range is 50-100mV/g (IEPE type) or 10-50pC/g (charge type), with a frequency response of 0.5Hz-50kHz. The resonant frequency is typically less than 1/3 of the original resonant frequency to ensure accuracy.

　　Structural Design:

　　Shear type: Mainstream configuration, insensitive to base strain and temperature changes, excellent high-frequency response.

　　Compression type: High rigidity, wide frequency response, but easily affected by base strain.

　　Bending type: High sensitivity but narrow frequency response, suitable for low-frequency applications.

　　Environmental Adaptability: High temperature resistance (e.g., CA901 series can reach -196℃~700℃), vibration and shock resistance (overload limit 500g-1000g), some models comply with NRC, IEEE 323 and other industrial standards.

　　Application Scenarios:

　　Industrial vibration monitoring: Fault diagnosis of rotating machinery (such as steam turbines and compressors), bearing wear detection.

　　Aerospace: Aircraft engine vibration monitoring, rotor dynamic balancing, Health and Usage Monitoring Systems (HUMS).

　　Extreme Environments: High/low temperature environments (e.g., nuclear power plants, spacecraft), high-impact scenarios (e.g., automotive crash testing).

　　Structural Health Monitoring: Low-frequency vibration analysis of bridges and buildings, earthquake monitoring.

　　Selection and Installation Considerations

　　Sensitivity Selection: Match the sensitivity to the measurement range (e.g., 0.1g-10g civil engineering, 100g-1000g mechanical impact) and frequency response requirements. High-sensitivity models are suitable for low-range, high-precision scenarios.

　　Installation Methods: Screw rigid connection (highest frequency response, up to 10kHz), adhesive bonding (6kHz), magnetic base (2kHz), or double-sided adhesive (1kHz). Ensure the mounting surface is flat to avoid frequency response attenuation.

　　Signal Processing: IEPE type requires constant current source power (24V/4mA), charge type requires a charge amplifier to avoid cable length affecting signal attenuation.

　　Vibro-Meter Related Model Reference

　　CA202: High sensitivity (100±5% pC/g), hermetically sealed welded, insulated inner shell, suitable for industrial vibration monitoring.

　　CA901: Extreme temperature environment (-196℃~700℃), compliant with NRC/IEEE standards, used in nuclear power, aerospace, and other scenarios.

　　CE680/PV102 series: Replaced by CE620/PV660; note part number updates (e.g., 444-680-000-511 replaced by 444-620-000-011-A1-B100).

　　System Integration and Accessories

　　Supporting Components: Preamplifier (e.g., OD-162), Eddy Current Sensor (IN081), Power Module (RPS6U), Relay Module (RLC16), Signal Conditioner (IQS450), Extension Cable (EA402).

　　Software System: VM600 series configuration software, TSI (Turbine Supervisory Instrumentation) integrated protection system, supporting multi-channel data acquisition and trend analysis.

　　Installation Specifications: Electromagnetic interference must be avoided; shielded cables must be used. Stainless steel encapsulated models are required for high-temperature environments; epoxy sealing is required for humid environments.

　　Summary: The Vibro-Meter CA134 144-134-000-611 piezoelectric accelerometer, with its high reliability, wide frequency response, and adaptability to various environments, holds an important position in rotating machinery protection, aerospace, and industrial monitoring. Ensure system integration and accessory compatibility to achieve accurate vibration monitoring and predictive maintenance.

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