CE281 444-281-000-111 piezoelectric accelerometer model

CE281 444-281-000-111 piezoelectric accelerometer

item no.:
CE281 444-281-000-11
lead time:
2-3days
product orgin:
Switzerland
payment:
T/T
Condition:
new

product details

CE281 444-281-000-111 FEATURES

From the vibro-meter® product line
Sensitivity: 10 µA/g
Frequency response: 3 to 7000 Hz
Temperature range: −55 to 260°C (sensor) and −40 to 125°C (electronics)
Long-distance signal transmission
Integrally attached electronics
Integral case insulation
Available in standard versions and Ex versions certified for use in potentially explosive atmospheres

CE281 444-281-000-111 DESCRIPTION

The CE281 piezoelectric accelerometer from Meggitt’s vibro-meter® product line is a vibration
sensor designed for the monitoring and protection of machinery in harsh industrial environments and/or hazardous areas.

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 (stainlesssteel 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. The CE281 is available in different versions for different industrial environments: standard versions for use in standard (non-hazardous) areas and Ex versions for installation in hazardous areas.

The CE281 piezoelectric accelerometer is an extremely reliable device that is suitable for the long-term monitoring of vibration in many industrial applications.

CE281 444-281-000-111 SPECIFICATIONS

Input power supply requirements：: 15 to 28 VDC, with a bias (standby) current of 5 to 8 mA
Signal transmission: : Current-modulated output (2-wire system)

Signal processing

Internal : Integrally attached electronics (charge-to-current conversion)
External : Galvanic separation unit and/or monitoring system electronics
Sensitivity : 10 µA/g ±5%
Dynamic measurement range: 0.0001 to 200 g PEAK
Overload capacity (spikes): Up to 2000 g PEAK
Linearity : ±1% over dynamic measurement range
Transverse sensitivity : <3% (measured at 15 Hz with 5 g)
Resonant frequency (mounted) : 25 kHz typ.
Frequency response : <±5% between 3 and 7000 Hz

Temperature range

Sensor head : −55 to 260°C (−67 to 500°F) continuous operation.
−70 to 290°C (−94 to 554°F) short-term survival (15 minutes max.).
Attached electronics : −40 to 125°C (−40 to 257°F) continuous operation.
−55 to 150°C (−67 to 302°F) short-term survival (15 minutes max.).
Temperature sensitivity error: ±5% between −20 and 260°C (−4 to 500°F).
− 14% to +5% between −55 and 260°C (−67 to 500°F)

CE281 444-281-000-111 DATASHEET DOWNLOAD