Small Size Quartz Accelerometer For Aerospace

ER-QA-03C:
1. Bias repeatability: 15-80μg;
2. Scale factor repeatability: 15-80ppm;
3. Class II non-linearity repeatability: 20-50μg/g².

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Introduction

ER-QA-03C Small Size Quartz Accelerometer For Aerospace

Introduction
ER-QA-03C Small Size Quartz Accelerometer for aerospace is a smaller volume quartz accelerometer, not only it can be used in aviation and aerospace inertial tests but also can be used in both static and dynamic acceleration measurements. In addition, the accelerometer uses a temperature sensor, which the operator can use to compensate bias and scale factor parameters to reduce the influence of temperature factors.

Applications in inertial navigation and guidance systems
Aircraft, ships, combat vehicles and other navigation and guidance systems must have speed and position information, in the occasion of low requirements, people use air speedometer, Mach number sensor, odometer, etc. But with the improvement of the performance requirements of systems, the above instruments can not meet the requirements. The linear accelerometer can be installed in the moving object to directly measure its acceleration, and then get the speed and position, the measurement accuracy is high, the dynamic performance is good, far better than the air speedometer, odometer. Therefore, linear accelerometer is one of the most important applications in inertial navigation guidance system.

Specifications

Parameters	ER-QA-03C1	ER-QA-03C2	ER-QA-03C3
Range	±60g	±60g	±60g
Threshold /Resolution	10μg	10μg	10μg
Bias	≤±5 mg	≤±5 mg	≤±5 mg
Scale factor	1.0±0.2 mA/g	1.0±0.2 mA/g	1.0±0.2 mA/g
Class II non-linearity	≤±20μg /g²	≤±30μg /g²	≤±50μg /g²
0g 4 hours short time stability	≤10 μg	≤20 μg	≤20 μg
1g 4 hours short time stability	≤10 μg	≤20 μg	≤20 μg
Bias repeatability	≤15 μg	≤50 μg	≤80 μg
Scale factor repeatability	≤15ppm	≤50 ppm	≤80ppm
Class II non-linearity repeatability	≤±20 μg /g²	≤±30 μg /g²	≤±50 μg /g²
Bias temp coefficient	≤±15 μg /℃	≤±50 μg /℃	≤±80 μg /℃
Scale factor temp coefficient	≤±15 ppm /℃	≤±80 ppm /℃	≤±100 ppm /℃
Noise	≤5mv	≤8.4mv	≤8.4mv
Natural Frequency	350~800 Hz	350~800 Hz	350~800 Hz
Bandwidth	800~2500 Hz	800~2500 Hz	800~2500 Hz
Vibration	10g(20-2000Hz)	10g(20-2000Hz)	10g(20-2000Hz)
Shock	150g, 0.5ms, 1/2sin
Operating temperature	-40~+80℃	-40~+80℃	-40~+80℃
Storage temperature	-60~+120℃	-60~+120℃	60~+120℃
Power	±12~±15V	±12~±15V	±12~±15V
Consume current	≤±20mA	≤±20mA	≤±20mA
Size	Ф18.2X23mm	Ф18.2X23mm	Ф18.2X23mm
Weight	≤30g	≤30g	≤30g