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Accelerometer Selection Guide– Unamplified
2-11
PC Board Mountable Accelerometer
Model 3022
CALIBRATION DATA
A calibration data sheet similar to the sample shown
above is included with each unit. The calibration
sheet provides the measured test and calibration
data for the sensor. In addition to the test data, the
values of calibration and temperature compensation
resistors are also included.
Figure 1. Calibration Data Sheet
SIGNAL CONDITIONING
Figure 2. Typical Temperature Compensation and Amplification Circuit (component values specified for each sensor)
• Rstc sets the excitation voltage ramp to compensate the sensitivity
error due to temperature.
• Rset sets the excitation voltage to 5V at 25°C.
• Rzb1, Rzb2 and Rztc1 and Rztc2 calibrate the zero offset and
compensate the offset error due to temperature.
• Rs calibrates the output span.
• Vcc must be >8 VDC.
Q1: 2N3904
CR1: 1N914 or equivalent
Op Amps: LT1014, LM324 or equivalent
Dec 2002