High Range 70g Unique Flexible Quartz Accelerometer With Temperature Sensor
Key Specifications
| Attribute | Value |
| Range | ±70g |
| Resolution | 5μg |
| Bias k0/k1 | ≤(±1 mg) |
| Scale factor kl | 0.8~1.5 mA/g |
| Bias drift Sigma k0 (1σ, one month) | ≤20 μg |
| Power | ±12~±15V |
Product Overview
The JB2 accelerometer family utilizes unique quartz flexible sensors for high-range (70g) acceleration measurement in aerospace environments. As the predominant sensor in China's commercial and military aircraft strap-down inertial navigation systems, it offers exceptional long-term repeatability and reliability.
Featuring a patented Q-flex® etched-quartz-flexure seismic system with amorphous quartz proof-mass structure, the JB2 provides excellent bias, scale factor, and axis alignment repeatability. The integral electronics produce an acceleration-proportional output current for both static and dynamic measurements, convertible to voltage via customer-supplied load resistors.
The optional internal temperature sensor enables dramatic performance improvements through temperature-compensating algorithms for bias, scale factor, and axis misalignment.
Key Features
- Excellent turn-on repeatability performance
- Environmentally rugged design
- Analog output signal
- Field adjustable range
- Optional internal temperature sensor for thermal compensation
- High measurement range (70g)
Performance Characteristics
| No. | Parameter | JB2-01 | JB2-02 |
| 1 | Measuring range | ±70g | ±70g |
| 2 | Threshold value | 5μg | 5μg |
| 3 | Deviation value k0/k1 | ≤(±3 mg) | ≤(±5 mg) |
| 4 | Scale factor k1 | 1.3±0.2 mA/g | 1.3±0.2 mA/g |
| 5 | Second-order nonlinear coefficient K2 | ≤±20μg/g² | ≤±30μg/g² |
| 6 | 0g 4 h short-term stability | ≤10 μg | ≤20 μg |
| 7 | 1g 4 h short-term stability | ≤10 ppm | ≤20 ppm |
| 8 | Deviation value comprehensive repeatability σk0 (1σ,1 month) | ≤10 μg | ≤30 μg |
| 9 | Scale factor comprehensive repeatability σk1/k1 (1σ,1 month) | ≤15ppm | ≤30 ppm |
| 10 | Nonlinear coefficient comprehensive repeatability σk2/k1 (1σ,1 month) | ≤±10 μg/g² | ≤±20 μg/g² |
| 11 | Deviation value temperature coefficient | ≤±20 μg/℃ | ≤±30 μg/℃ |
| 12 | Scale factor temperature coefficient | ≤±20 ppm/℃ | ≤±30ppm/℃ |
| 13 | Noise (Sampling resistance is 840Ω) | ≤5mv | ≤8.4mv |
| 14 | Natural frequency | 400~800 Hz | 400~800 Hz |
| 15 | Bandwidth | 800~2500 Hz | 800~2500 Hz |
| 16 | Vibration | 5g(20-2000Hz) | 5g(20-2000Hz) |
| 17 | Shock | 100g,5ms,1/2sin | 100g,5ms,1/2sin |
| 18 | Operating temperature range | -40-+85℃ | -40-+85℃ |
| 19 | Storage temperature range | -60-+120℃ | -60-+120℃ |
| 20 | Power | ±12~±15V | ±12~±15V |
| 21 | Current consumption | ≤±20mA | ≤±20mA |
| 22 | Temperature Sensor | Yes and No two type | Yes and No two type |
| 23 | Size | Ф25.4X30mm | Ф25.4X30mm |
| 24 | Weight | ≤80g | ≤80g |
Typical Applications
- Drilling and Inclination Measurement
- Aeronautics and Astronautics
- Instruments and Equipment
Configuration Details
Note: The temperature sensor is AD590. Point 10 is the high power connection, while point 9 is the low power connection. Points 9 and power ground utilize one platinum resistance with a value of 1K and thermal coefficient less than 5ppm.
Download Configuration Drawing and Interface Specifications
