Model AC64 is a high resolution accelerometer, with sensitivity of 3 V/g and a noise spectral density of less than 0.1 μg/√Hz at 100 Hz. It is sealed in a compact stainless steel 304 housing with a rating of IP67. Acceleration is measured along one axis normal to the base. The unit is mounted to a planar measurement surface using either a set screw (1/4-28 UNF) or via a screw- in stainless steel 304 and neodymium magnet accessory, which is available separately.

A 3-wire electrical interface accepts a low-power voltage input from 6.3 to 36 V @2.5 mA. A piezo-electric transducer stack, made of PZT-5H material sensing in compression mode, is connected to a charge amplifier. A low-impedance DC-coupled output voltage signal is biased at half the input voltage, VIN. The internal electronic circuitry has high levels of power supply noise rejection. The electrically grounded housing shields the unit from electromagnetic interference.

 Applications

• Small-signal vibration measurements

• Integrity of structures, like pipelines

• Instrumentation with an embedded vibration sensor

• Machine health

• Seismic activity

 features

• Sensitivity of 3 V/g, noise spectral density of < 0.1 μg/√Hz at 100 Hz

• One-axis acceleration measurement

• Operation at VIN = 6.3-36 V, @2.5 mA, no constant current diode needed

• Simple 3-wire interface with a DC-coupled low-impedance output and bias voltage of half VIN

• Sealed stainless steel 304 housing, IP67

• Flexible design customization with low minimum quantity requirements