Vibro-Meter CA202 144-202-000-106 144-202-000-203 Heavy-duty ⁠Piezoelectric Accelerometer

Frequently asked questions
Q:What is the Vibro-Meter CA202 144-202-000-106 144-202-000-203?
A:The Vibro-Meter CA202 144-202-000-106 / 144-202-000-203 is a piezoelectric accelerometer designed for heavy-duty industrial vibration monitoring. It features a symmetrical shear-mode sensing element with differential output, internal case insulation, and a hermetically sealed stainless-steel housing for stable and reliable vibration measurement in harsh environments. Designed for use with an external charge amplifier, it is suitable for continuous condition monitoring of critical rotating machinery, including turbines, compressors, pumps, and generators.

Q:What is the frequency range of the CA202?
A:The CA202 provides a usable frequency range of 0.5 Hz to 6 kHz, allowing it to measure both low- and high-frequency machine vibrations.

Q:Is the CA202 suitable for harsh industrial environments?
A:Yes. It features a hermetically welded stainless-steel housing and an integral low-noise cable protected by a flexible stainless-steel hose, providing reliable operation in harsh industrial conditions.

Description

The Vibro-Meter CA202 144-202-000-106 144-202-000-203 is a piezoelectric accelerometer designed for long-term vibration monitoring in heavy-duty industrial applications. It features a symmetrical shear-mode polycrystalline sensing element with differential output and internal case insulation for stable, low-noise measurement. The sensor is housed in a hermetically welded austenitic stainless-steel case and fitted with an integral low-noise cable protected by a flexible stainless-steel hose, ensuring reliable operation in high-temperature and hazardous environments. Designed for use with an external charge amplifier, the CA202 provides accurate vibration measurement over a frequency range of 0.5 to 6000 Hz and operates at temperatures from −55 °C to +260 °C.

Parameter

Model: CA202 144-202-000-106 144-202-000-203 Heavy-duty ⁠Piezoelectric Accelerometer
Ex Certifications: ATEX IECEx NEPSI CSA
Frequency Response: 0.5 Hz to 6,000 Hz (6 kHz)
Charge Sensitivity: 100 pC/g
Integral Cable Length: 3 m
Operating Temp: −55°C to +260°C
Dynamic measurement range: 0.01 to 400 g peak
Overload capacity (spikes): Up to 500 g peak
Transverse sensitivity: ≤3%
Resonant frequency: >22 kHz nominal

Application areas

The Vibro-Meter CA202 144-202-000-106 144-202-000-203 is a heavy-duty, high-temperature, charge-output type sensor. The primary application areas for these specific part numbers include:

• High-Frequency Aerodynamic Anomalies: With a resonance frequency above 20 kHz, it captures high-frequency structural vibrations, blade passing frequencies (BPF), and aerodynamic instabilities inside the gas turbine flow path.
• High-Pressure Hydrocarbon Pumps: Monitoring the structural integrity and vibration of process pumps handling volatile, flammable, or aggressive chemical compounds.
• Hydro-Turbine Bearings: Installed on the guide bearings and headcovers of Francis, Kaplan, or Pelton turbines, where sensors are constantly exposed to water spray, high humidity, and oil.

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