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7011 / 7012 Inertial Reference
Feature Highlights
- Precision Strap Down Inertial Reference
for Lateral and Normal Sensing
- Direct replacement for LVDT based
accelerometers
- MEMS Technology
- High Sensitivity
- Low Temperature Drift
- Low Cross-Axis Sensitivity
- Full Operation Over -50º to 70º C
- Includes EMI Filter, Power Supply, MEMS
Sensor, Amplifier, Filter and Output Buffer
- Self Test
- 26 VAC Power (MIL-STD-704A)
- MTBF 70,000 hours (MIL-HDBK-217)
- Tested to MIL-STD-810 and MIL-STD-461/462
|
 |
Description
The 7011 / 7012 inertial reference
provides a strap down lateral or normal accelerometer for spatial
orientation measurements as part of a complete inertial reference autopilot
system. The units are designed to replace aging mechanical LVDT based
accelerometers with superior performance. The units deliver optimal
performance in MIL-SPEC environments. The 7011 / 7012 Include:
Output: The 7011 / 7012 has a
ratiometric AC voltage output. Output is proportional to both the 28 VAC
power and the acceleration sensed. This response exactly duplicates the
response from LVDT based accelerometers it replaces.
Power Supply: The 7011 / 7012 operates directly from 28 VAC Aircraft
Power (MIL-STD-704). The unit handles the sags and surges common on the
power bus including induced effects of lightning.
MEMS Sensing: The MEMS core of the 7011 / 7012 provides a solid state
foundation for acceleration measurement. The MEMS accelerometer responds to
±1 g changes in the gravitational acceleration due to changes in aircraft
orientation.
Amplification: For maximum resolution of acceleration data, the 7011
/ 7012 amplifies signals with a multi-stage differential amplifier.
Filtering: The 7011 / 7012 filters and conditions signals with active
low-pass filtering to eliminate unwanted signal components. Filter is a 17
Hz, 6-pole Bessel style.
Self-Test: The 7011 / 7012 contains a built-in self-test function. A
signal line is available to engage the self-test remotely.
Applications
- Inertial Reference
- Autopilot Input
- Tilt Monitoring
Electrical Performance: Vs = 26 VAC; Tc
= 25º C unless otherwise specified
| Parameter |
Min. |
Typ. |
Max. |
Units |
| Full Scale Measurement Range |
-1 |
|
+1 |
g |
| Sensitivity |
0.2 |
|
|
mg |
|
Cross Axis Sensitivity |
|
|
0.3 |
% FSO |
| Null |
-4 |
|
+4 |
mg |
| Filter Cutoff Frequency (Six Pole Bessel) |
|
17 |
|
Hz |
| Linearity |
|
0.1 |
|
% FSO |
| Zero Offset Temperature Drift |
|
|
0.007 |
% FSO / º C |
|
Span Temperature Drift |
|
|
0.054 |
% FSO / º C |
|
Supply Voltage (Vs) (MIL-STD-704 compliant) |
13.1 |
26 |
40.7 |
Volts AC |
|
Operating Current |
|
65 |
|
mA |
Environmental Requirements:
Vs = 26 VAC unless otherwise specified
| Parameter |
Min. |
Typ. |
Max. |
Units |
| Operating Temperature |
-50 |
|
70 |
º C |
| Storage Temperature |
-55 |
|
85 |
º C |
| Humidity |
|
|
100 |
% |
| Altitude |
|
|
40,000 |
feet |
Physical Specification:
| Parameter |
Specification |
| Enclosure Type |
Environmentally and EMI Sealed Aluminum
Enclosure |
| Enclosure Size |
1.25" x 2.50" footprint (not including
connector) 2.59" height |
| Weight |
9 oz. |
| Connector |
MS27508E10F99P |
Datasheet in PDF
|
