The Vibro-Meter CA901 delivers precise vibration data under intense thermal and mechanical stress. This model (144-901-000-212) includes an integrated 5-meter cable (designated by the "12" suffix) and a Lemo connector. The sensor produces a charge output with a nominal sensitivity of 10 pC/g. It meets strict industrial and nuclear standards, including NRC guide 1.133 and IEEE 323-1974. Furthermore, the unit features integral case insulation to eliminate ground loops. Therefore, the Vibro-Meter CA901 is the industry standard for high-integrity loose part monitoring.
This accelerometer thrives in conditions ranging from -196°C to +700°C. Vibro-Meter constructs the housing from Inconel 600 and uses hermetic welding to ensure a gas-tight seal. This design withstands pressures up to 140 bar. Additionally, the CA901 offers exceptional radiation resistance. It handles gamma flux up to $10^{11}$ erg/g and neutron flux up to $10^{18}$ $n/cm^2$ without performance loss. Consequently, the sensor provides stable, long-term monitoring inside nuclear containment structures and high-pressure steam lines.
The Vibro-Meter CA901 maintains a linear response across a wide frequency spectrum. It offers a flat response (±5%) from 3 Hz to 2800 Hz. The sensor detects vibration levels from 0.001 g up to 200 g peak. It also features an overload capacity of 500 g for transient spikes. To maintain signal purity, the internal insulation resistance exceeds $10^9$ Ω. Furthermore, the unit holds ATEX certification for use in explosive atmospheres (Zones 0, 1, and 2). Therefore, the hardware delivers clean vibration data even in hazardous or high-interference locations.
The Vibro-Meter CA901 is a passive piezoelectric device. It requires no external input power and generates a charge signal proportional to the sensed acceleration. You should process this signal using a dedicated charge converter. The sensor head features a high resonance frequency of over 17 kHz. This ensures that internal mechanical interference does not affect the operating range. These specifications make the CA901 an essential tool for detecting structural defects or loose components in high-speed machinery.
You should mount the Vibro-Meter CA901 inside a tube or directly to the machine surface using 4 Allen M6 screws. Apply a fastening torque of 15 Nm to ensure a rigid mechanical path. This specific version features a 5-meter integral cable, suitable for short-to-medium runs to a junction box. The total weight is approximately 0.88 kg. Finally, the Lemo connector provides a secure, vibration-resistant interface for connection to your signal conditioning system.
First, inspect the mounting surface. Ensure it is clean and flat to support the 17 kHz resonance performance. Secure the Vibro-Meter CA901 using the 4 Allen M6 screws. Tighten them to 15 Nm. Next, route the 5-meter cable carefully to avoid high electromagnetic noise zones. Connect the Lemo connector to your charge converter. Furthermore, secure the cable with clamps to prevent fatigue from constant vibration. Finally, check the output on your diagnostic terminal to verify that the sensitivity aligns with the factory 10 pC/g specification.
1 x Vibro-Meter CA901 Accelerometer (144-901-000-212)
1 x Integrated 5-Meter Cable with Lemo Connector
1 x Factory Calibration Certificate
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Q: What is the primary use case for the CA901?
The Vibro-Meter CA901 is specifically designed for loose part monitoring and high-temperature vibration sensing in nuclear and power generation facilities.
Q: Does this sensor require an external power supply?
No. It is a passive piezoelectric device. However, you must use a charge converter to translate the pC signal into a usable voltage or current.
Q: Can this sensor handle cryogenic temperatures?
Yes. With an extreme lower limit of -196°C, the CA901 is fully operational in liquid nitrogen environments.
Q: Is the sensor head protected against moisture?
Yes. The Inconel 600 housing is hermetically welded. This provides a moisture-proof and gas-tight seal for high-pressure environments.
Q: What is the significance of the "212" in the part number?
The "12" suffix indicates a 5-meter cable length with a VM Lemo connector.
| Brand Name | Vibro-Meter (Meggitt) |
| Model No. | Vibro-Meter CA901 144-901-000-212 |
| Product Type | Piezoelectric Accelerometer |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
