Accelerometer


Accelerometer

 

SM1500 & SM550

The SM550 and SM1500 are two MEMS type, three-component acceleration equivalent output sensor. Both have wide frequency response. Model SM1500 has a response from DC to 1500Hz, while the SM550 model has a response from 0.5 to 550Hz. Output Range is +/-3g for the horizontal axes, and +/-2g for the vertical axes. Sensitivity is 1.2V/g for the Sm1500, and 0.3V/g for the SM550 model.

The SM1500 sensor operates from a bipolar power supply that can range from +/-6V to +/-15V with a typical power consumption of 33mA @6Vdc. The SM550 sensor operates from a  unipolar power supply that can range from +/-9V to +/-20V with a typical power consumption of 16mA @9V.

The default cable length between the sensor and the digitizer is approximately 2 meters but it can be extended up to 50 meters. The sensors are surface mounted, over a provided special base, giving the ability for leveling.

Technical Specifications

GENERAL SM1500 SM550
No. of Channels 3 3
Orientation Vertical, North-South, East-West Vertical, North-South, East-West
Sensor cable length 2 m (up to 50 m optional) 2 m (up to 50 m optional)
Power +/- 6V to +/- 15V, 390mW +/- 9V to +/- 20V, 288mW
Max ouput voltage +/- 3.6Vpp +/- 0.9Vpp
Bias level 0V +/- 100mV 1.6V +/- 100mV
Scale factor

+/- 3g Horizontal

+/- 2g Vertical

+/- 3g Horizontal

+/- 2g Vertical

Sensitivity +/- 3g +/- 3g
Electronic output noise 0.3ugrms/(Hz)-2

150ugrms/(Hz)-2 Horizontal

300ugrms/(Hz)-2 Vertical

Bandwith DC-1500Hz

0.5-550Hz Vertical

0.5-1600Hz Horizontal

Dynamic Range 117dB 62dB
Nonlinearity <1% max <1% max
Size 160 x 100 mm 160 x 100 mm
Weight 600 g 600 g
Overvoltage protection All pins are protected, All input signals are protected All pins are protected, All input signals are protected
Temperature range -40 to +850C -40 to +850C
Humidity 100%, IP67 enclosure 100%, IP67 enclosure