Aerospace Quartz Accelerometer

ER-QA-01A:
1.Bias repeatability: 10μg;
2.Scale factor repeatability: 10ppm;
3. Class II non-linearity repeatability: 10μg/g².

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Introduction

ER-QA-01A Aerospace Quartz Accelerometer

Application
ER-QA-01A Aerospace Quartz Accelerometer with high precision is used in carrier's microgravity measuring system, inertial navigation system, static angle measurement system.

Features
High Precision
High Performance

Specifications

No.	Parameter	ER-QA-01A3	ER-QA-01A2	ER-QA-01A1	Unit
0	Threshold/Resolution	5	5	5	μg
1	Bias	≤5	≤8	≤10	mg
2	Scale Factor	1.1~1.5	1.1~1.5	1.1~1.5	mA/g
3	Second-order Non-linearity	≤10	≤10	≤15	μg/g²
4	Bias Temp Coefficient	≤10	≤20	≤30	μg/℃
5	Scale Factor Temp Coefficient	≤10	≤20	≤30	ppm/℃
6	Bias Repeatability	≤10	≤20	≤30	μg
7	Scale Factor Repeatability	≤10	≤20	≤30	ppm
8	Second-order Non-linearity Repeatability	≤10	≤10	≤10	μg/g²
9	Natural Frequency	≤800	≤800	≤800	Hz
10	Acceleration Range	±20	±20	±20	g
11	Vibration	8	8	8	grms
12	Shock	120g, 4.5ms, 1/2sin
13	Operating Temp	-40~+80	-40~+80	-40~+80	℃
14	Weight	≤80	≤80	≤80	g
15	Resolution	≤5×10 -6	≤5×10 -6	≤5×10 -6	g
16	Operating Voltage	±12~±15	±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)