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Single Axis Capacitive Accelerometer Sensor, ±1g/±5g/±50g

$454.61
High precision acceleration monitoring single-axis capacitive accelerometer sensor for sale, the accelerometer sensor's sensitive parts for the cantilever beam structure, can make it in the corresponding linear acceleration ±1g / ±5g / ±50g range range, the nonlinear error is less than 0.5%. Can be widely used in vibration, shock, rotational acceleration and inclination measurement, school research, industrial monitoring and other measurements.
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SKU: ATO-AS-R0150
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Delivery date: 6-12 days

Highly sensitive single-axis capacitive accelerometer sensors are available in ±1g, ±5g, and ±50g. Excellent frequency response of 0 to 1000Hz (±10%) at ±1g ensures accurate vibration measurements. The single axis accelerometer is housed in a durable stainless steel case and is compact with a 2 meter shielded cable for easy installation.

Specifications

Model ATO-SADR01 ATO-SADR05 ATO-SADR50
Measurement Range ±1g ±5g ±50g
Sensitivity 1000 mV/g (±10%) 250 mV/g (±10%) 38 mV/g (±10%)
Axis Single axis
Vibration Nonlinearity 0.5%
Maximum Lateral Sensitivity <5%
Frequency Response 0~1000Hz (±10%) 0~2000Hz (±10%) 0~400Hz (±10%)
Resonant Frequency 5500Hz 15000Hz 20000Hz
Noise ~1 mV (rms) ~1.5 mV (rms) ~1.5 mV (rms)
Zero G Bias Voltage 2.5±0.1V DC
Operating Voltage +5~+16V DC
Operating Temperature -40~+120℃ -40~+85℃ -40~+100℃
Shock Resistance (No Power Supply) 2000g 2000g 3000g
Sensitivity Temperature Coefficient 0.3%/℃ 0.5%/℃ 0.8%/℃
Weight 20g
Case Material Stainless steel
Output Method Three-core overall shielded cable (2m)
Installation Method 4-Φ2.8 or adhesive


Features

  • This SADR series axial capacitive accelerometer sensor has single-axis output.
  • Can measure static acceleration, such as gravity acceleration and inclination and other physical measurements, high sensitivity, stable performance.
  • Low voltage and current, low power consumption, strong anti-interference ability.
  • Acceleration sensor total weight 20g, small size and light weight, more convenient installation.

Dimension (unit: mm)

Single axis capacitive accelerometer sensor dimension

Working Principle

Capacitive accelerometer sensor working principle

Capacitive accelerometer sensors use micromachining technology to machine a variable gap differential capacitive sensitive element on a silicon wafer. As shown in the figure below, the differential capacitance is composed of two fixed pole plates and one movable pole plate, where the movable pole plate is connected to the inertial mass block, i.e. the cantilever beam shown in the figure. The motion of the cantilever beam causes a change in the differential capacitance, which is then amplified, converted and detected by a circuit integrated on the same silicon wafer to output a voltage signal proportional to the acceleration.

The SADR series of single-axis capacitive accelerometer sensors require at least a single +5V or +3V DC power supply to interface with standard data acquisition systems. The sensitivity and 0g DC bias voltage values are proportional to the supply voltage. The output voltage increases from the 0g output value for positive acceleration and decreases for negative acceleration.

When subjected to acceleration, the DC output voltage value is: Vout=Vs/2+ (sensitivity x a x Vs/5)

where Vs is the supply voltage in V and a is the acceleration value in g.

The AC output voltage value is: Vout= Sensitivity x a

Wiring Diagram

capacitive accelerometer sensor wiring

Tips: Single axis capacitive accelerometer sensor to measure the inclination of the formula

The SADR series capacitive accelerometer sensor uses a differential capacitance sensitive element whose output voltage depends on the magnitude of the inclination angle with respect to gravity. The inclination output of the sensor depends on the magnitude of the gravity force parallel to the same sensor, and the inclination angle is measured according to this principle.

For angles greater than 10°, the calculation should be based on the following formula:

  • SIN α=SIN [(Output voltage at inclination to be measured - 0g DC bias voltage)/sensitivity].

For inclination angles less than 10°, the calculation can be done directly in radians using the formula:

  • α = [(output voltage at inclination to be measured -0g DC bias voltage 0)/sensitivity] x (180/π)
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