The Vibro-Meter CA901 specializes in sensing vibration under extreme thermal stress. This specific version (144-901-000-252) features a standard design with a Lemo connector and an 8-meter integrated cable. The sensor utilizes a charge output system. It provides a nominal sensitivity of 10 pC/g. Furthermore, the CA901 meets strict nuclear standards, including NRC guide 1.133 and IEEE 323-1974. Therefore, the Vibro-Meter CA901 serves as a critical component for safety and predictive maintenance in high-stakes energy sectors.
This sensor excels in temperatures ranging from -196°C to +700°C. Vibro-Meter constructs the housing from Inconel 600. They hermetically weld the assembly to ensure it remains airtight. This design withstands pressures up to 140 bar at room temperature. Additionally, the CA901 exhibits high 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 accelerometer maintains precision in the most corrosive and radioactive industrial settings.
The Vibro-Meter CA901 delivers a linear response across a broad dynamic range. It measures vibration from 0.001 g up to 200 g peak. The sensor features a resonance frequency higher than 17 kHz. This ensures a clean frequency response between 3 Hz and 2800 Hz with only ±5% deviation. For safety, the unit includes integral case insulation. It also carries ATEX certification for use in Zones 0, 1, and 2. Therefore, the hardware provides reliable data even in potentially explosive atmospheres or high-interference zones.
The Vibro-Meter CA901 operates as a passive device and requires no input power. It transmits signals via a 2-pole system that remains insulated from the casing. The internal insulation resistance exceeds $10^9$ Ω. This prevents signal leakage during high-temperature operations. Furthermore, the transverse sensitivity stays below 5%. This ensures that cross-axis vibrations do not distort your primary measurements. These specifications make the CA901 a standard choice for loose part monitoring and structural vibration analysis.
You should mount the Vibro-Meter CA901 inside a tube using 4 Allen M6 screws. Apply a fastening torque of 15 Nm to ensure rigid coupling. The 144-901-000-252 model includes an 8-meter cable (designated by the "52" suffix). The sensor weighs approximately 0.95 kg including the cable assembly. Its hermetic welding ensures long-term stability in 100% humidity environments. Finally, the Lemo connector provides a secure, quick-release interface for connecting to charge converters or signal conditioners.
First, inspect the mounting surface for cleanliness and flatness. Use the 4 Allen M6 screws to secure the Vibro-Meter CA901 to your monitoring point. Tighten the screws to 15 Nm. Next, route the 8-meter cable away from high-voltage lines to minimize noise. Connect the Lemo connector to a compatible charge converter. This converter translates the pC signal into a voltage or current signal. Furthermore, verify that the cable is properly supported to prevent mechanical strain. Finally, perform a baseline test to confirm the sensitivity matches the factory-calibrated 10 pC/g.
1 x Vibro-Meter CA901 Accelerometer (144-901-000-252)
1 x Integrated 8-Meter Cable with Lemo Connector
1 x Factory Calibration Certificate
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Q: What temperature range can this sensor withstand?
The Vibro-Meter CA901 operates continuously between -54°C and +650°C. It handles extreme peaks from -196°C up to +700°C.
Q: Does this sensor require an external power supply?
No. It is a piezoelectric device that generates its own charge signal. However, you will need a charge converter to process the output.
Q: Is the CA901 safe for use in explosive areas?
Yes. It holds ATEX certification (Ex ia IIC T6 to T710) for Zones 0, 1, and 2.
Q: What is the significance of the "252" at the end of the part number?
The "52" indicates the 8-meter cable length version with a Lemo connector.
Q: Can this sensor be used in nuclear environments?
Yes. It meets NRC and IEEE standards for nuclear power plant monitoring and withstands high radiation flux.
| Brand Name | Vibro-Meter (Meggitt) |
| Model No. | CA901 144-901-000-252 |
| Product Type | Piezoelectric Accelerometer |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
