7290A Datasheet, PDF (2/2 Pages) List of Unclassifed Manufacturers – Variable Capacitance Accelerometer

ENDEVCO
MODEL
7290A
Variable Capacitance Accelerometer
SPECIFICATIONS—continued
PERFORMANCE CHARACTERISTICS—continued
Units
7290A-2
-10
THERMAL ZERO SHIFT
From 32°F to 122°F (0°C to 50°C)
% FSO Max ±1.0
±1.0
From -13°F to +167°F (-25°C to +75°C)
% FSO Max ±2.0
±2.0
THERMAL SENSITIVITY SHIFT
From 32°F to 122°F (0°C to +50°C)
% Max
±2.0
±2.0
From -13°F to +167°F (-25°C to +75°C)
% Max
±3.0
±3.0
THERMAL TRANSIENT ERROR
Equiv. g/°F
< 0.0006
< 0.0006
PER ISA RP 37.2
Equiv. g/°C
< 0.001
< 0.001
OVERRANGE (Determined by Electrical clipping or Mechanical stops, whichever is smaller.)
Electrical clipping
g
-3.5/+3.8
-18/+19
Mechanical stops, typical/minimum
g
±4
±30
Recovery Time
µs
< 10
< 10
THRESHOLD (RESOLUTION) [7]
Equiv. g’s
0.0005
0.0025
BASE STRAIN SENSITIVITY, MAX [8]
Equiv. g
0.01
0.01
MAGNETIC SUSCEPTIBILITY [9]
Equiv. g
< 0.1
< 0.1
WARM-UP TIME (to within 1%)
ms
10
10
-30
±1.0
±2.0
±2.0
±3.0
< 0.0006
< 0.001
-53/+57
±90
< 10
0.008
0.01
< 0.1
10
-50
±1.0
±2.0
±2.0
±3.0
< 0.0006
< 0.001
-87/+95
±90
<10
0.012
0.01
< 0.1
10
-100
±1.0
± 2.0
±2.0
±3.0
< 0.0006
< 0.001
-175/+190
±150
< 10
0.025
0.01
< 0.1
10
ELECTRICAL
EXCITATION [3]
CURRENT DRAIN [10]
OUTPUT IMPEDANCE/LOAD
RESIDUAL NOISE
9.5 to 18.0 Vdc, 20 Vdc maximum without damage; excitation voltage can be applied to any
lead without damage
8.5 mA Typ, 10 mA Max
500 ohms max/10K ohms resistance minimum, 0.1 µF capacitance maximum
100 µV rms typ, 0.5 to 100 Hz. 500 µV rms typ, 0.5 Hz to 10 KHz
PHYSICAL
CASE, MATERIAL
ELECTRICAL, CONNECTIONS
IDENTIFICATION
MOUNTING/TORQUE
WEIGHT
Anodized aluminum alloy
Integral cable, four conductor No. 28 AWG, Teflon® insulated leads, braided shield,
Hyperflex™ jacket
Manufacturer's logo, model number and serial number
Holes for two 4-40 or M3 mounting screws/6 lbf-in (0.68 Nm)
10 grams (cable weighs 9 grams/meter)
ENVIRONMENTAL
ACCELERATION LIMITS (in any direction)
Static
Sinusoidal/Random Vibration
Shock (half-sine pulse)
Zero Shift
TEMPERATURE
Operating
Storage
HUMIDITY/ALTITUDE
ESD SENSITIVITY
20 000 g
100 g pk, 20 - 2000 Hz/40 g rms, 20 - 2000 Hz
5000 g, 150 µsec or longer for the -2 and -10; 10 000 g, 80 µsec or longer for the -30, -50 and
-100
0.1% FSO typical at 5000 g
-65°F to +250°F (-55°C to +121°C)
-100°F to +300°F (-73°C to +150°C)
Unaffected. Unit is epoxy sealed. Hybrid and sensor are hermetically sealed/Unaffected
Unit meets Class 3 requirements of MIL-STD-883
CALIBRATION DATA SUPPLIED
SENSITIVITY
mV/g with 15 Vdc excitation
(at 1g and 5 Hz for 7290A-2)
(at 10g and 100 Hz for 7290A-10,-30,-50, and -100)
FREQUENCY RESPONSE
1 to 100 Hz for 7290A-2, 20 to 10,000 Hz for all other ranges
ZERO MEASURAND OUTPUT
mV
MAXIMUM TRANSVERSE SENSITIVITY % of sensitivity
ACCESSORIES
EHW265
EH409
EHM464
(2) SIZE 4, FLAT WASHERS
(2) 4-40 X 3/8 INCH CAP SCREWS
(1) HEX WRENCH
4. Extended frequency response available on special order to
extend to 0-900 Hz for 7290A-10, 0-1500 Hz for 7290A-30,
and 0-2000 Hz for 7290A-100.
5. Full scale output (FSO) is nominally 4 volts.
6. 1% is typical. 1% maximum available on special order.
OPTIONAL ACCESSORIES
24328
4 CONDUCTOR SHIELDED CABLE
7990
TRIAXIAL MOUNTING BLOCK
7. THRESHOLD = MAX. RESIDUAL NOISE; 0.5 TO 100 Hz
SENSITIVITY
8. Per ISA 37.2 at 250 Microstrain.
9. At 100 Gauss, 60 Hz.
NOTES
1. Customized range, 7290A-XX, available on special order.
FSO is nominally 4 volts. Combined non-linearity and
hysterisis is typically ±1% FSO and ± 2% FSO, maximum.
2. Reference frequency is 20 Hz on the 2 g range.
3. Over the excitation range 9.5 to 18.0 Vdc. Sensitivity
changes +0.1%/V typical and zero measurand output
10. Current drain increases slightly with increasing excitation; typi-
cal change is +.06 mA per volt from 9.5 to 18.0 Vdc.
11. Maintain high levels of precision and accuracy using Endevco's
factory calibration services. Call Endevco’s inside sales force
at 800-982-6732 for recommended intervals, pricing and turn-
around time for these services as well as for quotations on our
standard products.
changes -0.5 mV/V typical.
NOTE: Tighter specifications available on special order.
Continued product improvement necessitates that Endevco reserve the right to modify these specifications without notice. Endevco maintains a program of con-
stant surveillance over all products to ensure a high level of reliability. This program includes attention to reliability factors during product design, the support of
stringent Quality Control requirements, and compulsory corrective action procedures. These measures, together with conservative specifications have made the
name Endevco synonymous with reliability.
ENDEVCO CORPORATION, 30700 RANCHO VIEJO ROAD, SAN JUAN CAPISTRANO, CA 92675 USA [phone] [phone] fax [phone]
www.endevco.com
Email:[e-mail]
0703 REV E