Q-Flex® QA-650 Accelerometer
Description
Quartz flexible accelerometer, as a kind of force feedback pendulum accelerometer, is developed on the basis of liquid floating pendulum accelerometer. The difference between the two mainly lies in that the detection mass of quartz flexible accelerometer is not floating, but is connected to the flexible beam support elastic torque is introduced. Therefore, this kind of accelerometer has higher accuracy, strong anti-disturbance ability, large measuring range and strong overload ability.
For Q-Flex technology in an economical package, Honeywell produces the QA650 for industrial grade applications including: automotive test
instrumentation, braking system deceleration, bridge and building sway and tilt monitoring, industrial and robotic control, land vehicle navigation,
subway and high-speed train ride comfort control, and offshore drilling platform motion monitoring.
As with the entire Q-Flex family of accelerometers, the QA650 features a patented Q-Flex etched-quartz-flexure seismic system. An amorphous quartz proof-mass structure provides excellent bias, scale factor, and axis alignment stability.
The integral electronics develops an acceleration-proportional output current providing both static and dynamic acceleration measurements. By
use of a customer supplied output load resistor, appropriately scaled for the acceleration range of the application, the output current can be converted into a voltage.
Working principle
Features
· Tactical navigation grade performance
· High value
· Environmentally rugged
· Analog output
· Compact design
· Built-in test
· Field-adjustable range
Applications
· Automotive test instrumentation
· Braking system deceleration
· Bridge and building sway and tilt monitoring
· Industrial and robotic control
· Land vehicle navigation
· Subway and train ride comfort control
· Offshore drilling platform motion monitoring
Configuration Drawings
Technical Specifications
| Performance |
| Input Range [g] |
±70 |
| Bias [mg] |
<15 |
| One-year Composite Repeatability [µg] |
<2500 |
| Temperature Sensitivity [µg/ºC] |
<100 |
| Scale Factor [mA/g] |
1.20 to 1.40 |
| One-year Composite Repeatability [ppm] |
<2500 |
| Temperature Sensitivity [ppm/ºC] |
<200 |
| Axis Misalignment [µrad] |
<15000 |
| Vibration Rectification [µg/g2rms] |
<100 (50-500 Hz) |
| Intrinsic Noise [µg-rms] |
<3000 (0-10,000 Hz) |
| Environment |
| Operating Temperature Range [ºC] |
—55 to +96 |
| Shock [g] |
100 |
| Vibration Peak Sine [g] |
25 @ 30-500 Hz |
| Resolution/Threshold [µg] |
<10 |
| Bandwidth [Hz] |
>300 |
| Thermal Modeling |
| |
YES |
| Electrical |
| Quiescent Current per Supply [mA] |
<16 |
| Quiescent Power [mW] @ ±15 VDC |
<480 |
| Input Voltage |
±13 to±18 |
| Physical |
| Weight [grams] |
51 Nominal, 65 Max. |
| Diameter below mounting surface [inches] |
Ø1.045 ±0.005 |
| Height - bottom to mounting surface [inches] |
0.617 Max. |
| Case Material |
300 Series Stainless Steel |
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