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