Advantages of the AC155 Accelerometer
- True triaxial output – Collect X-, Y- and Z-axis data simultaneously through one Mini-MIL connector, following the right-hand Cartesian phase convention for straightforward post-processing.
- Broad, flat bandwidth – 36–390 000 CPM (0.6–6.5 kHz) linear (±3 dB) response lets you investigate everything from large structural resonances to bearing-fault frequencies.
- Built to survive – Welded hermetic 316 L stainless-steel case, IP68 seal, ‑65 °F to +250 °F (-54 °C to +121 °C) rating and 5 000 g shock resistance (per CTC family spec) stand up to lab and plant abuse.
- Shear-mode PZT element – Minimises base-strain errors and thermal drift for cleaner data.
- Plug-and-play IEPE electronics – Runs from any 18–30 V DC, 2–10 mA constant-current source, making it compatible with most data-acquisition hardware.
- Safety & compliance – SIL 2 rating and CE compliance simplify acceptance in regulated industries.
Use Cases of the AC155 Accelerometer
- Modal & ODS (Operating-Deflection-Shape) studies
- Multi-channel MIMO experimental dynamics
- Portable route-based data collection where measurement points are limited
- OEM test stands requiring three-axis monitoring in a tight footprint
AC155 For your Application
If you need fast, repeatable three-axis vibration data without the price-tag of high-end tri-axials, the AC155 is the sensor of choice. Its combination of rugged packaging, broad bandwidth and IEPE simplicity makes it equally at home in the R&D lab and on the plant floor.
Quick Specification Overview
| Characteristic | Value | Notes |
|---|---|---|
| Sensitivity | 100 mV/g ±15 % | All three axes [7] |
| Dynamic range | ±50 g peak | Requires ≥22 V supply [7] |
| Frequency response (±3 dB) | 0.6 – 6.5 kHz (36 – 390 k CPM) | Flat across all axes [7] |
| Noise @100 Hz | 6.5 µg/√Hz | Low background noise [7] |
| Operating temperature | ‑65 °F – +250 °F (-54 °C – +121 °C) | [7] |
| Weight | 7.1 oz (200 g) | Adds minimal mass to structures [7] |
| Mounting thread | ¼-28 UNF blind tapped (M6 optional) | 1–2 ft-lb torque [7] |
| Housing / seal | 316 L SS, welded hermetic, IP68 | Corrosion resistant [7] |
| Connector | 4-pin Mini-MIL top exit | X, Y, Z +, common – [7] |
| Resonant frequency | 23 kHz | Well above usable band [7] |
| Safety rating | SIL 2 | Functional-safety compliant [7] |