144-901-000-222 | Vibro Meter Piezoelectric Accelerometer - Petro Auto Tech

Product Overview: The 144-901-000-222 Piezoelectric Accelerometer

When monitoring critical machinery in extreme environments, the 144-901-000-222 from Vibro Meter delivers proven reliability. This piezoelectric accelerometer is designed for loose part monitoring and meets stringent safety standards, including NRC guide 1.133 and IEEE 323-1974. Its integral case insulation and ATEX certification make it suitable for potentially explosive atmospheres.

Technical Specifications Breakdown

The 144-901-000-222 offers a sensitivity of 10 pC/g ±5% at 120 Hz, with a dynamic measuring range from 0.001 g to 200 g peak. Its frequency response spans 3 Hz to 2800 Hz nominal, ensuring accurate vibration detection. The resonance frequency exceeds 17 kHz, and transverse sensitivity is less than 5%. Overload capacity reaches up to 500 g peak, while linearity remains within ±1% over the full range.

Extreme Temperature and Environmental Capabilities

This accelerometer operates continuously from -54°C to +650°C and can withstand extreme temperatures from -196°C to +700°C. It handles shock acceleration up to 500 g peak and pressure of 140 bar at 23°C, or 80 bar at 300°C. The Inconel 600 construction is hermetically welded for corrosion and humidity resistance. Radiation tolerance includes gamma flux up to 1011 erg/g and neutron flux up to 1018 n/cm2 with no effect.

Industry Applications for the 144-901-000-222

This accelerometer excels in nuclear power plants, where loose part monitoring is critical for safety and compliance. It is also ideal for high-temperature industrial processes, such as gas turbines and chemical reactors, where standard sensors fail. The ATEX certification (LCIE 08 ATEX 6017 X II 1 G) allows use in Zones 0, 1, and 2, making it a reliable choice for explosive environments.

Installation and Mounting Guidance

Mount the 144-901-000-222 inside a tube using four Allen screws M6 with a fastening torque of 15 Nm. The two-pole system is insulated from the casing, requiring a charge converter for signal processing. Ensure proper cable length selection—the standard version includes a 12.5 m cable with Lemo connector. Verify that the mounting surface is clean and free of debris to maintain accurate readings.

Maintenance and Reliability Considerations

Routine inspection should focus on cable integrity and connector condition, as the hermetically welded Inconel 600 housing requires minimal maintenance. The accelerometer meets DIN 25.475.1 and NRC guide 1.133, ensuring long-term reliability. Its radiation resistance and wide temperature range reduce the need for frequent replacements, lowering total cost of ownership.

Selection Guide and Purchasing Advice

Before purchasing the 144-901-000-222, verify the required cable length—options are available with different XX codes (e.g., XX=22 for 12.5 m). Confirm compatibility with your charge converter and signal processing equipment. Petro Auto Tech offers this model with full traceability and support for industrial automation needs.