High precision inertial navigation accelerometers for large number
of military applications have high stability
KSJB2 series quartz flexible accelerometer is a high-precision,
inertial navigation level accelerometer for a large number of
military 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: Inertial measurement of military high-precision
inertial navigation system in aerospace, aviation, ships, weapons
and other fields, and precision instrument equipment vibration
isolation test and inclination test.
Outline diagram and pin definition:
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.
technical parameters:
| 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:
1. Scale factor is adjusted according to user requirements;
2.Temperature sensor: divided into AD590, pt1000, 18B20,
3. Test cycle: divided into 1 month, 3 months, 6 months, 12 months,
according to user requirements for testing;
4. 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.
