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The CE281 444-281-000-111 piezoelectric accelerometer from Meggitt’s vibro meter product line is a vibration sensor for the monitoring and protection of machinery in harsh industrial environments and/or hazardous areas.
Long-distance signal transmission
Integrally attached electronics
Available in standard versions and Ex versions certified for use in potentially explosive atmospheres
The CE281 sensor features a centre-mounted symmetrical shear-mode measuring element using polycrystalline material. The sensor uses integrally attached electronics to provide the required signal processing, eliminating the need for an external signal conditioner (charge amplifier).
The attached electronics also performs charge-to-current conversion in order to provide a current-modulated output signal that is suitable for transmission over long distances. The sensor head is connected to the attached electronics by an integral cable (low-noise, shielded) in a hermetically sealed link, protected by a flexible, leak-tight protection tube (stainless steel hose).
More specifically, the sensor head, protection tube and electronics housing are hermetically welded to one another, resulting in a system that is fully protected against cooling fluids, lubricants, water, steam and other potential contaminants. The CE281 sensor and electronics are insulated from their housings (integral case insulation) and have a sensitivity of 10 µA/g.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Vibro Meter CE281 444-281-000-111 Piezoelectric Accelerometer Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Thermal Power Plants
Tracks boiler feed pump conditions under high ambient temperatures to ensure steady operations.
Nuclear Power Generation
Monitors secondary-loop steam turbine bearings for early micro-crack and imbalance detection.
Steel & Metallurgy Mills
Surveys blast furnace draft fans exposed to intense heat and abrasive dust environments.
Wind Power Generation
Tracks main bearings and high-speed gearboxes in offshore wind turbines to reduce maintenance costs.
Monitors large rotary kiln drive gearboxes under continuous high-load and hot conditions.
When using the vibro-meter CE281 444-281-000-111 piezoelectric accelerometer, the following three critical precautions must be strictly observed: Never breach the integral welding—the sensor head, protection tube, and electronics housing form a hermetically welded, inseparable system.
Never attempt to cut, splice, or disassemble any part on-site, as this will completely destroy its fluid-tight sealing and environmental protection. Mind the armored bend radius—when routing the stainless steel protection tube, maintain a dynamic bend radius of at least 50 mm (static at least 35 mm) to avoid kink damage to the internal low-noise shielded cable.
Ensure correct current receiver matching—since the sensor outputs a current-modulated signal of 10 µA/g, it must be routed to compatible field terminal boxes or monitoring modules with current-loop inputs (such as VM600 AMC cards), never plug it directly into standard voltage-type acquisition channels.
Vibro Meter CE281 444-281-000-111 is an intrinsically safe, high-temperature piezoelectric accelerometer for harsh industrial environments. Its unique split-welded structure allows the sensor head to withstand -55°C to +260°C, eliminating external amplifiers. Utilizing a 10 μA/g current-modulated output, it supports zero-attenuation transmission up to 1,000 meters. Featuring an Ex i bayonet connector, it is ideal for long-term rotating machinery monitoring in gas turbines, petrochemicals, and power generation.
It is an industrial-grade piezoelectric accelerometer.
How do you use products like the CE281 444-281-000-111?
Thread it vertically and rigidly onto the machine's bearing housing surface, and connect it to a constant current source (IEPE power) or a condition monitoring system (such as VM600) via a dedicated low-noise cable to read voltage vibration signals.
In what harsh environments can the CE281 444-281-000-111 operate?
Featuring a hermetically sealed stainless steel casing, this sensor can operate stably over long periods in environments with industrial oil mist, high humidity, chemical splashes, and hazardous areas with explosive gases.
What measurement principle does the CE281 444-281-000-111 rely on?
It relies on the piezoelectric principle: an internal shear-mode piezoelectric crystal generates a minute charge under vibrational inertial force, which is immediately converted into a low-impedance voltage signal by internal electronics.
Which main industries select the CE281 444-281-000-111?
It is widely used for asset monitoring in petrochemical refining, heavy power generation (gas turbines/fans), non-ferrous metallurgy, water utility pumping stations, and mining equipment.
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