Description
At Alava Ingenieros, we represent LNS Dynamics and ASC-Sensors, leaders in IEPE accelerometers. These sensors incorporate a preamplifier that converts the signal to low impedance, allowing the use of long cables without loss of quality and minimizing noise interference. They are the perfect choice for modal testing, industrial monitoring and laboratories.
LNS Dynamics and ASC IEPE Accelerometers: Accuracy and Reliability for Vibration Measurement
At the core of any vibration monitoring or testing system is the sensor, and the right choice is essential to obtain reliable data. At Álava Ingenieros we work with LNS Dynamics and ASC-Sensors, two of the world’s most reputable manufacturers in the field of sensors. Their range of IEPE (Integrated Electronics Piezo-Electric) accelerometers represents the industry standard solution for the accurate measurement of vibration, shock and acceleration phenomena.
What is IEPE technology and why is it the most widely used?
The IEPE standard defines a type of piezoelectric accelerometer that incorporates the signal conditioning electronics (an amplifier or impedance converter) inside. When the piezoelectric crystal of the sensor is subjected to acceleration, it generates a high-impedance load signal, which is very susceptible to electromagnetic noise and interference from cable movement.
The electronics built into an IEPE sensor immediately converts this load into a much more robust and stable low-impedance voltage signal. This signal is transmitted through a standard two-wire coaxial cable, which simultaneously supplies the sensor with a constant excitation current from the data acquisition system.
Key Benefits of IEPE Accelerometers
This ingenious configuration offers crucial benefits:
- Noise immunity: The low-impedance signal is inherently resistant to electromagnetic interference and cable-generated triboelectric noise.
- Use of long cables: Allows the laying of cables up to hundreds of meters without signal degradation, ideal for large structures or machinery.
- Reduced cost and complexity: Uses inexpensive coaxial cables and standard connectors (such as BNC or microdot), simplifying installation and maintenance.
- Interchangeability: As an industry standard, LNS Dynamics and ASC IEPE accelerometers are compatible with the vast majority of data acquisition systems on the market.
Limitless Applications
From structural health monitoring of a bridge to high frequency vibration analysis of a combustion engine, IEPE accelerometers are the essential tool. Applications include predictive maintenance in industry, automotive noise and vibration (NVH) testing, ground vibration testing (GVT) in aerospace, modal analysis, seismic monitoring and laboratory research and development.
Álava Ingenieros’ team of experts can advise you to select the LNS Dynamics or ASC monoaxial or triaxial IEPE accelerometer that best suits your application.
