The CA202 piezoelectric accelerometer is one of the core products of the vibro-meter brand under Meggitt, designed specifically for industrial vibration monitoring and measurement. The sensor employs a symmetrical shear-mode polycrystalline piezoelectric sensing element housed in an austenitic stainless steel case, offering excellent mechanical stability and long-term reliability. Model 144-202-000-205 is the standard version equipped with a 3-meter integral low-noise cable, suitable for industrial vibration monitoring in non-hazardous areas.
With its high sensitivity, wide frequency response, strong environmental adaptability, and long-term stability, the CA202 sensor is widely used in vibration monitoring and fault diagnosis systems in industries such as power generation, petrochemical, aerospace, and heavy machinery. Its design complies with multiple international standards and can achieve high-precision vibration signal acquisition and analysis when paired with compatible signal conditioners (e.g., IPC70x series).
2. Key Features & Benefits
| Feature | Description |
| High Sensitivity | 100 pC/g, suitable for high-precision measurement of weak vibration signals. |
| Wide Frequency Response | 0.5 Hz to 6,000 Hz, covering the vibration frequency range of most industrial equipment. |
| Wide Operating Temperature Range | The sensor can operate continuously from -55°C to +260°C, suitable for extreme temperature conditions. |
| Robust Sealed Construction | Hermetically welded austenitic stainless steel case and flexible stainless steel protection hose, resistant to dust, water, oil, and corrosion. |
| Symmetrical Differential Output | Internal case insulation with differential signal output for strong noise immunity. |
| Integral Cable | Low-noise cable is hermetically welded to the sensor, eliminating connection point failures. |
| Suitable for Harsh Environments | Optional explosion-proof (Ex) versions for use in potentially explosive atmospheres (Zone 0/1/2). |
| Easy Installation | Standard M6 mounting holes, no additional insulating washers required, compatible with various mounting adapters. |
3. Application Areas
The CA202 accelerometer is suitable for the following industrial vibration monitoring scenarios:
Power Generation Equipment
Vibration monitoring of bearings and casings in steam turbines, gas turbines, wind turbines, and hydro generators.
Oil & Gas
Heavy Machinery & Manufacturing
Vibration monitoring of machine tools, stamping equipment, conveyor systems, and metallurgical equipment.
Aerospace & Defense
Transportation
Research & Laboratories
4. Ordering Information
The CA202 is available in multiple versions and cable lengths. Below are some example models:
| Version Type | Cable Length | Part Number (PNR) |
| Explosion-Proof (Ex) | 3m | 144-202-000-106 |
| Explosion-Proof (Ex) | 6m | 144-202-000-116 |
| Standard Version | 3m | 144-202-000-205 |
| Standard Version | 6m | 144-202-000-216 |
| Standard Version | 11m | 144-202-000-226 |
| Standard Version | 20m | 144-202-000-236 |
For other cable lengths or special configurations, please contact your local Meggitt representative.
5. Installation & Usage Recommendations
Mounting Orientation: The sensor should be mounted along the measurement axis, with the arrow direction aligned with the vibration direction to ensure a positive signal output.
Mounting Surface: Should be flat and clean; no additional insulating washer is required.
Cable Securing: Avoid excessive bending or strain on the cable; use cable clamps for support.
Signal Conditioning: Must be used with a charge amplifier (e.g., IPC70x) to obtain a voltage signal for data acquisition systems.
Calibration: Dynamically calibrated at the factory (5 g, 120 Hz); generally no recalibration is needed.
6. Recommended Accessories
| Accessory Name | Model | Part Number (PNR) | Purpose |
| Mounting Adapter Kit | MA133 | 809-133-000-011 | For CA20x/CE31x series, includes Micaver (mica-glass) thermally isolating base |
