AC198-M12A Compact Multipurpose Accelerometer

AC198-M12A Series Compact Multipurpose Accelerometer

The CTC AC198-M12A Series is a high-performance, compact accelerometer designed for versatile vibration monitoring applications. Featuring a sensitivity of 100 mV/g (±10%) and a wide frequency response from 0.5 Hz to 8 kHz (±3 dB), this sensor delivers precise vibration data with very low noise and superior RF immunity. Its compact side-exit design with a 4-pin M12 connector and M8x1.25 captive bolt mounting allows for easy installation and cable management in space-constrained environments.

Built with a shear-mode PZT ceramic sensing element housed in a hermetically welded 316L stainless steel case, the AC198-M12A offers excellent durability and environmental resistance. It withstands shocks up to 5,000 g peak and operates reliably across a broad temperature range from -58°F to 250°F (-50°C to 121°C). The sensor is SIL 2 rated and submersible to 40 meters, making it suitable for demanding industrial environments. Backed by CTC’s unconditional lifetime warranty, the AC198-M12A is a reliable choice for condition monitoring and diagnostic applications.

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SKU AC198-M12A Category

Key Features for the AC198-M12A

  1. High sensitivity of 100 mV/g with ±10% tolerance for accurate vibration measurement
  2. Wide frequency response: 0.5 Hz to 8 kHz (±3 dB) for detailed vibration analysis
  3. ±80 g dynamic range with 5,000 g shock protection for rugged environments
  4. Very low spectral noise: 8 µg/√Hz @ 10 Hz, 4 µg/√Hz @ 100 Hz, 2 µg/√Hz @ 1 kHz
  5. Hermetically sealed 316L stainless steel housing; IP68-class sealing and submersible to 40 m
  6. Side-exit 4-pin M12 connector and M8x1.25 captive bolt for secure mounting
  7. SIL 2 rated for safety-critical applications
  8. Quick settling time (<2 seconds) for efficient data collection
  9. Supplied with calibration certificate

Typical Applications for the AC198-M12A Accelerometer

  • General-purpose vibration monitoring in confined spaces
  • Condition monitoring and diagnostics in industrial machinery
  • Safety-critical applications requiring SIL 2 rated sensors
  • Harsh environments requiring hermetic sealing and submersibility
  • OEM integration for compact, high-performance accelerometers
  • Research and development requiring low noise and wide bandwidth
Download the Specification Sheet Here

Technical Specification AC198-M12A Overview

ParameterValueMetric / Notes
Sensitivity (±10%)100 mV/g—
Frequency Response (±3 dB)0.5 Hz – 8 kHz30 – 480,000 CPM
Dynamic Range±80 g peak—
Shock Protection5,000 g peak—
Spectral Noise @ 10 Hz8 µg/√Hz—
Spectral Noise @ 100 Hz4 µg/√Hz—
Spectral Noise @ 1000 Hz2 µg/√Hz—
Settling Time<2 seconds—
Voltage Source (IEPE)18 – 30 V DC—
Constant Current Excitation2 – 10 mA—
Output Impedance<100 ohm—
Bias Output Voltage10 – 14 V DC—
Case Isolation>10⁸ ohm—
Temperature Range-58 to 250 °F-50 to 121 °C
Housing Material316L Stainless SteelHermetically welded
Weight3.4 oz96 grams
MountingM8x1.25 Captive BoltTorque 2 to 5 ft-lb
Connector4 Pin M12Side exit

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