Product Overview
When vibration monitoring points sit in harsh, high-temperature industrial environments, measurement reliability decides whether you catch a machine fault early or lose production to an unexpected failure. The 144-202-000-226 is the Vibro Meter CA202 piezoelectric accelerometer — a heavy-duty charge-output sensor built for exactly those conditions.
This standard version ships with an 11 m integral low-noise cable, protected by a flexible stainless-steel hose that is hermetically welded to the sensor to form a sealed, leaktight assembly. The symmetrical shear-mode polycrystalline measuring element sits inside an austenitic stainless-steel case with internal insulation and differential output.
Key Parameters That Matter
Sensitivity and Dynamic Range
The CA202 delivers 100 pC/g ±5% at 120 Hz with 5 g. Its dynamic measurement range spans 0.01 to 400 g peak, with overload capacity up to 500 g peak for spikes. Linearity holds at ±1% from 0.01 to 20 g peak and ±2% from 20 to 400 g peak — practical accuracy across both low-amplitude and high-shock events.
Frequency and Temperature
Frequency response covers 0.5 to 6000 Hz at ±5%, with a nominal resonant frequency above 22 kHz. The sensor operates continuously from −55 to +260°C, while the integral cable handles −55 to +200°C. Short-term survival reaches −70 to +280°C for the sensor. Temperature sensitivity error is 0.25%/°C below 23°C and 0.1%/°C above it.
Sealed Construction
The hermetically welded austenitic stainless-steel sensor and heat-resistant stainless-steel protection hose resist 100% relative humidity, water, steam, oil, sea-salt atmospheres, dust, fungus and sand. Internal insulation resistance is 109 Ω minimum, and the sensor weighs approximately 250 g with cable at 135 g/m.
Where the CA202 Fits
Steam turbine and compressor monitoring. The 260°C continuous rating and sealed stainless housing suit turbine casings and compressor frames where heat and moisture attack ordinary sensors.
Hazardous-area machinery. Ex versions of the CA202 are certified for potentially explosive atmospheres, making the platform a practical choice for oil, gas and petrochemical rotating equipment.
Replacement and upgrade programs. When an existing charge-output accelerometer fails, matching sensitivity, frequency range and mounting pattern is the fastest route back to reliable data. The CA202’s 100 pC/g output and four M6 × 35 mounting screws align with common heavy-duty vibration monitoring setups.
Installation and Signal Chain
The CA202 is a charge-output sensor with no input power requirement. Signal transmission uses a 2-pin system insulated from case, and the charge output requires a charge converter — the IPC70x signal conditioner — to produce a usable voltage signal. The lower cutoff frequency is set by that signal conditioner, so confirm the conditioner’s range matches your measurement band before commissioning.
Mounting uses four M6 × 35 Allen screws and four M4 spring-lock washers at a nominal tightening torque of 15 Nm (11.1 lb-ft). The unit terminates with flying leads. Base-strain sensitivity is 0.15 x 10−3 g/µε at 250 µε peak-peak, so mount on a flat, prepared surface to limit strain-induced error.
Maintenance and Reliability
Because the assembly is hermetically sealed, routine work is mostly external: inspect the protection hose for mechanical damage, check mounting torque periodically, and verify cable routing away from hot surfaces or abrasion points. The stainless-steel hose protects the integral cable in wet, oily and dusty plants, which reduces unplanned sensor replacement and keeps monitoring channels online.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
Selection Checklist
Before purchasing the 144-202-000-226, confirm your signal conditioner accepts charge output, verify the 11 m cable length reaches your junction box, and check that the mounting footprint matches your machine surface. Oil AutoTech offers hands-on technical selection help and fast dispatch, worldwide, for oil, gas and industrial automation spares. Contact Oil AutoTech today for pricing and availability.
