CA202 144-202-000-116

Product Overview

The Meggitt CA202 144-202-000-116 is a high-performance piezoelectric accelerometer from the vibrometer product line, specifically designed for vibration monitoring in harsh and potentially explosive environments. This model is intrinsically safe (Ex i) certified and is equipped with a 6-meter integrated cable. The robust structure of CA202 features a sealed austenitic stainless steel housing and heat-resistant stainless steel protective hoses, ensuring reliability under extreme conditions. This sensor employs symmetrical shear piezoelectric elements, providing high precision and stability for industrial applications such as power generation, oil and gas, and heavy machinery monitoring.

Specifications and Parameters

Main Features and Advantages

High sensitivity and wide frequency range

The CA202 144-202-000-116 has a sensitivity as high as 100 pC/g and a wide frequency response range, from 0.5 Hz to 6,000 Hz (±5%). High sensitivity can precisely measure extremely low amplitude vibrations, which is crucial for the early fault detection of rotating machinery such as turbines and compressors. A wide frequency range ensures that very slow mechanical movements and very high-frequency vibrations can be captured, such as those caused by gear meshing or bearing defects, thereby providing a comprehensive understanding of the machine's health condition.

Sturdy and durable, suitable for extreme environments

A sealed assembly is formed by welding a sealed austenitic stainless steel (1.4441) housing and a heat-resistant stainless steel protective hose together. This sensor can withstand various harsh environments, including 100% humidity, direct water spray, steam, oil stains, corrosive sea salt environments, dust and fungi. Materials suitable for extreme environments can ensure long-term reliable operation in demanding industries such as offshore oil and gas and power generation, which are constantly confronted with the challenge of environmental pollution.

Hazardous Area Certification

144-202-000-116 offers the "Ex" version and has obtained multiple international certifications, featuring intrinsically safe (Ex ia) and explosion-proof (Ex nA) protection capabilities. Model CA202 144-202-000-116 has obtained Ex ia certification. It can be safely installed in potentially explosive environments without igniting gases or dust. This is a mandatory requirement for monitoring equipment in places such as oil refineries, chemical plants and grain processing facilities.

Symmetrical shearing mode design with internal insulation

A symmetrical shear mode piezoelectric crystal structure isolated from the sensor housing is adopted. This design minimizes the sensitivity to base strain (bending of the mounting surface) and transient temperature changes, which can cause false signals in other types of accelerometers. The internal shell insulation can prevent ground loops (a common source of electrical noise in measurement systems), thus ensuring clear and reliable signals.