Precision Quartz Flexible Accelerometer with ±70g Scope 5μg Threshold and High Stability for Inertial Navigation
KSJB2 series quartz flexible accelerometer is a high-precision, inertial navigation level accelerometer for a large number of applications (up to 100g), the product has excellent long-term stability, repeatability, start-up performance, environmental adaptability and high reliability characteristics, can be used for static testing can be used for dynamic testing, is also a standard vibration sensor and inclination sensor.
The output current of the product is linearly related to the force or acceleration received, and the user can select the appropriate sampling resistance through calculation to achieve high-precision output. The built-in temperature sensor can be used to compensate the offset value and scale factor to reduce the impact of ambient temperature according to user needs.
Applications: Quartz flexible pendulum accelerometers have been widely used in the measurement of various linear accelerations and vibration accelerations and the measurement of parameters such as speed, distance, angular velocity, and angular displacement. Successfully used in satellite microgravity measurement systems, high-precision inertial navigation systems, rock, and soil-based borehole surveys and oil drilling, continuous inclinometer systems, launch vehicles, ballistic missiles, spacecraft, and other and civilian fields.
Figure I: Universal accelerometer
Pin conventional definition:
- 1, signal output;
- 2. Empty;
- 3, -15V;
- 4, +15V;
- 5, power supply and signal ground;
- 6. Empty;
- 7. Empty;
- 8. Empty;
- 9, -9V output;
- 10, +9V output.
| Number | Parameters | KSJB2-01 | KSJB2-02 | KSJB2-03 |
| 1 | Scope | ±70g | ±70g | ±70g |
| 2 | Threshold value | 5μg | 5μg | 5μg |
| 3 | deviation value K0/K1 | ≤±3 mg | ≤±3 mg | ≤±5 mg |
| 4 | scale factor K1 | 0.8~1.2 mA/g | 0.8~1.2 mA/g | 0.8~1.2 mA/g |
| 5 | Second order nonlinear coefficient K2 | ≤±10μg /g2 | ≤±15μg /g2 | ≤±20μg /g2 |
| 6 | 0g 4 hours short-term stability | ≤10 μg | ≤15 μg | ≤20 μg |
| 7 | 1g 4 hours short-term stability | ≤10 ppm | ≤15 ppm | ≤20 ppm |
| 8 | deviation value synthesis repeatability σK0 (1σ,one month) | ≤10 μg | ≤20 μg | ≤30 μg |
| 9 | Scale factor integrated repeatability σK1/K1 (1σ,one month) | ≤15ppm | ≤30 ppm | ≤50 ppm |
| 10 | Comprehensive repeatability of nonlinear coefficients K2/K1(1σ,one month) | ≤±10 μg /g2 | ≤±20 μg /g2 | ≤±30 μg /g2 |
| 11 | deviation value Temperature coefficient(The mean value of the whole temperature zone) | ≤±10 μg /℃ | ≤±30 μg /℃ | ≤±50 μg /℃ |
| 12 | Scale factor Temperature coefficient(The mean value of the whole temperature zone) | ≤±20 ppm /℃ | ≤±30 ppm /℃ | ≤±50 ppm /℃ |
| 13 | Noise(The sampling resistance is 840Ω) | ≤5mv | ≤5mv | ≤5mv |
| 14 | Natural frequency | 400~800 Hz | 400~800 Hz | 400~800 Hz |
| 15 | bandwidth | 800~2500 Hz | 800~2500 Hz | 800~2500 Hz |
| 16 | Random vibration | 6g(20-2000Hz) | 6g(20-2000Hz) | 6g(20-2000Hz) |
| 17 | strike | 100g,8ms,1/2sin | 100g,8ms,1/2sin | 100g,8ms,1/2sin |
| 18 | Operating temperature range | -55～+85℃ | -55～+85℃ | -55～+85℃ |
| 19 | Storage temperature range | -60~+120℃ | -60~+120℃ | 60~+120℃ |
| 20 | Power supply | ±12~±15V | ±12~±15V | ±12~±15V |
| 21 | Current consumption | ≤±20mA | ≤±20mA | ≤±20mA |
| 22 | Temperature sensor | User customizable | User customizable | User customizable |
| 23 | dimension | Ф25.4X30mm | Ф25.4X30mm | Ф25.4X30mm |
| 24 | weight | ≤80g | ≤80g | ≤80g |
Note:
- Scale factor is adjusted according to user requirements;
- Temperature sensor: divided into AD590, pt1000, 18B20,
- Test cycle: divided into 1 month, 3 months, 6 months, 12 months, according to user requirements for testing;
- According to user installation requirements; The dimensions can be slightly adjusted according to user requirements, and other test requirements can be carried out according to customer requirements.
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