Product Overview
When monitoring dynamic pressure in harsh environments like gas turbines or nuclear reactors, the Vibro Meter 143-103-000-931 crystal element delivers reliable performance. This piezoelectric pressure transducer uses a VC2 type single crystal material in compression mode, minimizing sensitivity to acceleration. It provides an extremely stable measuring instrument suitable for long-term monitoring or development testing.
Technical Specifications
The 143-103-000-931 offers a frequency response of 2 to 10000 Hz with a sensitivity of 232 pC/bar at 2 Hz. It handles a dynamic measuring range from 0.00004 to 20 bar nominal, with overload capacity up to 250 bar. Linearity is within ±1% over the dynamic measuring range. Acceleration sensitivity is ≤0.05 pC/g, and resonant frequency exceeds 50 kHz. The transducer operates continuously from −54 to +650°C and can endure extreme temperatures from −196 to +700°C. It withstands shock acceleration under 2000 g peak along the sensitive axis.
Industry Applications
This crystal element excels in gas turbines and primary circuits of PWR, APWR, BWR, ABWR, FBR, and HTGR reactors. Its high-pressure capability up to 250 bar and radiation tolerance (gamma flux 10¹¹ erg/g, neutron flux 10¹⁸ n/cm²) make it ideal for demanding monitoring tasks. For maintenance engineers, the proven reliability and NRC guide compliance ensure minimal downtime.
Installation & Setup Guidance
Mount the transducer using the flange dimensions Ø27.5/21 mm x 3 mm. The integral mineral insulated cable (twin conductors) terminates with a LEMO or high-temperature connector from Vibro-Meter. Ensure proper signal transmission via the 2-pole system insulated from casing, outputting charge. No external input power is required; use a charge converter for signal processing.
Maintenance & Reliability
Routine inspection focuses on cable integrity and connector condition. The hermetically welded INCONEL® alloy 600 construction resists corrosion and humidity. Dynamic calibration at the factory at 1 bar peak and 2 Hz (+23°C) eliminates the need for subsequent calibration, reducing maintenance overhead. For long-term reliability, verify internal insulation resistance (min. 10⁹ Ω at room temperature, 10⁷ Ω at 300°C).
Selection Guide & Purchasing Advice
Before ordering the 143-103-000-931, confirm compatibility with your charge converter and cable length requirements. The transducer weight is 120 g nominal; MI cable adds 50 g/m (140 g/m with overbraid). Contact SpareTechPLC for current lifecycle status and availability. We stock genuine Vibro Meter components to support your maintenance needs.
Frequently Asked Questions
Q: What is the operating temperature range of the 143-103-000-931?
A: Continuous operation spans −54 to +650°C, with extreme capability from −196 to +700°C.
Q: Does the transducer require external power?
A: No, input power requirements are none; it outputs a charge signal via a 2-pole system.
Q: What is the sensitivity at 2 Hz?
A: Sensitivity is 232 pC/bar (16 pC/psi) ±5% typical at +23°C ±5°C.
Q: Can this crystal element handle high-pressure spikes?
A: Yes, overload capacity for spikes is up to 250 bar.
Q: Is the transducer radiation-resistant?
A: Yes, it withstands gamma flux of 10¹¹ erg/g and neutron flux of 10¹⁸ n/cm² with no effect.
