As the inertial navigation standard by which others are measured, KT produces the JB3. It is the smaller outline accelerometer.
JB3 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 JB3 also includes a current-output.
Features
1. Excellent turn-on repeatability performance
2. Environmentally rugged
3. Analog output
4. Field adjustable range
5. Smaller outline size
Performance characteristics
S/No
Parameters
JB3-01
JB3-02
JB3-03
1
Range
±60g
±60g
±60g
2
Threshold /Resolution
10μg
10μg
10μg
3
Bias k0/k1
≤(±10 mg)
≤(±10 mg)
≤(±10 mg)
4
Scale factor kl
1.2±0.2 mA/g
1.2±0.2 mA/g
0.5~0.7mA/g
5
Class II nonlinearity coefficient k2/k1
≤±20μg /g2
≤±30μg /g2
≤±20μg /g2
6
0g 4 hours short time stability
≤20 μg
≤30 μg
≤20 μg
7
1g 4 hours short time stability
≤20 ppm
≤30 ppm
≤20 ppm
8
Bias drift Sigma k0( 1σ，one month)
≤40 μg
≤80 μg
≤40 μg
9
Repeatability of scale factor Sigma kl/kl ( 1σ，one month)
≤50ppm
≤100 ppm
≤50ppm
10
Class II nonlinearity Coefficient repeatability k2/k1(1σ，one month)
≤±20 μg /g2
≤±30 μg /g2
≤±20 μg /g2
11
Bias thermal coefficient
≤±30 μg /℃
≤±50 μg /℃
≤±30 μg /℃
12
Scale factor thermal coefficient
≤±50 ppm /℃
≤±100 ppm /℃
≤±50 ppm /℃
13
Noise (sample resistance 840Ω)
≤4mv
≤8.4mv
≤4mv
14
Natural Frequency
350~800 Hz
350~800 Hz
350~800 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
Size
Ф18.2X23mm
Ф18.2X23mm
Ф18.2X23mm
23
Weight
￡30gram
￡30gram
￡30gram
