High-Precision and Anti-Vibration Quartz Accelerometer for Aerospace

ER-QA-02A:
1. Bias repeatability: 60μg;
2. Scale factor repeatability: 60ppm;
3. Class II non-linearity repeatability: 50μg/g².

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Introduction

ER-QA-02A High-Precision And Anti-Vibration Quartz Accelerometer

Application
ER-QA-02A High-Precision and Anti-Vibration Quartz Accelerometer for aerospace is suitable for the environment which has high requirement of circumstance and precision.

Specifications

No.	Parameters	ER-QA-02A02	ER-QA-02A01	Unit
1	Bias	≤7	≤7	mg
2	Scale Factor	0.1~1.5	0.1~1.5	mA/g
3	Second-order Non-linearity	≤50	≤50	μg/g²
4	Bias Temp Coefficient	≤50	≤80	μg/℃
5	Scale Factor Temp Coefficient	≤60	≤80	ppm/℃
6	Bias Repeatability	≤60 (3~7 days)	≤60 (one day)	μg
7	Scale Factor Repeatability	≤60 (3~7 days)	≤60 (one day)	ppm
8	Second-order Non-linearity Repeatability	≤50 (3~7 days)	≤50 (one day)	g/g²
9	Acceleration Range	±10	±10	g
10	Vibration	8	8	grms
11	Shock	120g, 4.5ms, 1/2sin%	120g, 4.5ms, 1/2sin%	g/ms
12	Working Temperature	-45~+100	-45~+100	℃
13	Weight	≤80	≤80	g
14	Working 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)