High Accuracy Quartz Accelerometer

ER-QA-01B:
1. Bias repeatability: 30μg;
2. Scale factor repeatability: 30ppm;
3. Widely applied in aerospace.

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Introduction

ER-QA-01B High Accuracy Quartz Accelerometer for Aerospace

Introduction

ER-QA-01B High-Accuracy Quartz Accelerometer for aerospace is specially used in inertial navigation system which has wide application in aerospace vehicles, inertial navigation system and control system of ships.

Specifications

No.	Parameter	ER-QA-01B2	ER-QA-01B1	Unit
0	Threshold/Resolution	5	5	μg
1	Bias	≤5	≤5	mg
2	Scale Factor	1.1~1.5	1.1~1.5	mA/g
3	Second-order Non-linearity	≤20	≤30	μg/g²
4	Bias Temp Coefficient	≤30	≤40	μg/℃
5	Scale Factor Temp Coefficient	≤50	≤60	ppm/℃
6	Bias month Repeatability	≤30	≤30	μg
7	Scale Factor Repeatability	≤30	≤30	ppm
8	Second-order Non-linearity Repeatability	≤10	≤10	μg/g²
9	Natural Frequency	≤800	≤800	Hz
10	Acceleration Range	±20	±20	g
11	Vibration	8	8	grms
12	Shock	120g, 4.5ms, 1/2sin
13	Operating Temp	-40~+80	-40~+80	℃
14	Weight	≤80	≤80	g
15	Resolution	≤5×10-6	≤5×10-6	g
16	Operating Voltage	±12~±15	±12~±15	v

Dimension

25.4 Accelerometer Dimension

Electrical interface

The servo circuit electrical interface relationships are shown in Table 1. The terminal arrangement and description should conform to the following diagram. The terminal arrangement is shown from the bottom view (pins facing upward).

Dimension Of Accelerometer

Table 1 Servo circuit electrical interface relationship (AD590)

Lead-out terminal Serial number	symbol	Pin function	Lead-out terminal Serial number	symbol	Pin function
1	M_L	Signal output terminal	6	T_se	Self-check terminal
2	M_H	Current test terminal	7	C_ext1	Differential capacitance detection terminal 1
3	V_-	Negative power supply terminal	8	C_ext2	Differential capacitance detection terminal 2
4	V₊	Positive power supply terminal	9	V_O-	AD590 low-end
5	GND	ground	10	V_O+	Regulator positive output(AD590High-end)