As the inertial navigation standard by which others are measured, KT produces the JB2, it is the predominant sensor used in today’s commercial and aircraft and superior reliability characteristics of the JB2 make it the best value inertial-grade accelerometer available on the market today.
JB2 features a patented Q-flex& etched-quartz-flexure seismic system. An amorphous quartz proof-mass structure provides excellent bias, scale factor, and axis alignment repeatability.
The integral electronics develops an acceleration-proportional output current providing both static and dynamic acceleration measurement. By use of customer supplied output load resistor, appropriately scaled for the acceleration range of the application, the output current can be converted into a voltage.
The JB2 also includes a current-output, internal temperature sensor. By applying temperature-compensating algorithms, bias, scale factor, and axis misalignment performance are dramatically improved.
Features
1. Excellent turn-on repeatability performance
2. Environmentally rugged
3. Analog output
4. Field adjustable range
5. Internal temperature sensor for thermal compensation（option）
6．High rangePerformance characteristics
|
S/No |
Parameters |
JB2-01 |
JB2-02 |
JB2-03 |
|
1 |
Range |
±70g |
±70g |
±70g |
|
2 |
Threshold /Resolution |
5μg |
5μg |
5μg |
|
3 |
Bias k0/k1 |
≤(±4 mg) |
≤(±7 mg) |
≤(±10 mg) |
|
4 |
Scale factor kl |
1.3±0.2 mA/g |
1.3±0.2 mA/g |
1.3±0.2 mA/g |
|
5 |
Class II nonlinearity Coefficient k2/k1 |
≤±20μg /g2 |
≤±60μg /g2 |
≤±60μg /g2 |
|
6 |
0g 4 hours short time stability |
≤15 μg |
≤30 μg |
≤30 μg |
|
7 |
1g 4 hours short time stability |
≤15 ppm |
≤30 ppm |
≤30 ppm |
|
8 |
Bias drift Sigma k0( 1σ，one month) |
≤20 μg |
≤80 μg |
≤100 μg |
|
9 |
repeatability of scale factor Sigma kl/kl( 1σ，one month) |
≤20ppm |
≤80 ppm |
≤100 ppm |
|
10 |
Class II nonlinearity Coefficient repeatability k2/k1(1σ，one month) |
≤±15 μg /g2 |
≤±30 μg /g2 |
≤±30 μg /g2 |
|
11 |
Bias thermal coefficient |
≤±20μg /℃ |
≤±100μg/℃ |
≤±100μg/℃ |
|
12 |
Scale factor thermal coefficient |
≤±30ppm/℃ |
≤±100ppm/℃ |
≤±160 ppm /℃ |
|
13 |
Noise (sample resistance 840Ω) |
≤5mv |
≤8.4mv |
≤8.4mv |
|
14 |
Natural Frequency |
400~800 Hz |
400~800 Hz |
400~800 Hz |
|
15 |
Bandwidth |
800~2500 Hz |
800~2500 Hz |
800~2500 Hz |
|
16 |
Vibration |
5g(20-2000Hz) |
5g(20-2000Hz) |
5g(20-2000Hz) |
|
17 |
Shock |
100g,5ms,1/2sin |
100g,5ms,1/2sin |
100g,5ms,1/2sin |
|
18 |
Temperature range(Operating) |
-40-+85℃ |
-40-+85℃ |
-40-+85℃ |
|
19 |
Temperature range(saved) |
-60-+120℃ |
-60-+120℃ |
-60-+120℃ |
|
20 |
Power |
±12~±15V |
±12~±15V |
±12~±15V |
|
21 |
Consume current |
￡±20mA |
￡±20mA |
￡±20mA |
|
22 |
Temp. sensor |
Yes and No two type |
Yes and No two type |
Yes and No two type |
|
23 |
Size |
Ф25.4X30mm |
Ф25.4X30mm |
Ф25.4X30mm |
|
24 |
Weight |
￡80gram |
￡80gram |
￡80gram |