High Output, pC/g Light Weight 360° Cable Orientation Profile Vibratio

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High Output, pC/g Light Weight 360° Cable Orientation Profile Vibratio

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Model 2221D
High Output, pC/g Light Weight 360° Cable Orientation Profile Vibration Measurement Small Structures
ENDEVCO
MODEL 2221D
Actual size
DESCRIPTION
ENDEVCO® Model 2221D piezoelectric accelerometer designed specifically vibration measurement small structures objects. unit epoxy sealed ideal controlled environment. light weight effectively minimizes mass loading. accelerometer self-generating device that requires external power source operation. Model 2221D features ENDEVCO's PIEZITE® Type crystal element operating annular shear mode. This device exhibits excellent output sensitivity stability over time. Signal ground connected outer case unit. When used with isolated mounting screw, accelerometer electrically isolated from ground. lownoise coaxial cable supplied error-free operation. transducer centrally located thru bolt, allowing 360° cable orientation. unit also adhesive mounted application permits. ENDEVCO Signal Conditioner Models 133, 2775A OASIS 2000 Computer-Controlled System recommended with this high impedance accelerometer.
.168 (4.27)
.363 (9.22)
.140 (3.56)
.600 (15.24)
INSULATED MOUNTING SCREW ASSEMBLY 6-32 UNC-2A MATES WITH ENDEVCO 3000 SERIES CABLES WITH 10-32 UNF-2B CONNECTOR
IDENTIFICATION LABELS
(12.4) (4.3) (3.8) .315 (8.00)
.017 (.43) INSULATED MOUNTING SURFACE (HARD ANODIZED ALUMINUM)
.496 (12.60)
STANDARD TOLERANCE INCHES (MILLIMETERS) .XXX .010 (.XX .25)
TYPICAL AMPLITUDE RESPONSE
TYPICAL TEMPERATURE RESPONSE
TYPICAL CAPACITANCE CHARGE SENSITIVITY 10000 (177)
DEVIATION
1000
DEVIATION
-100 (-73)
(10)
(93)
FREQUENCY HERTZ
TEMPERATURE
APPLIES CALIFORNIA FACILITY
ENDEVCO
SPECIFICATIONS
following performance specifications conform ISA-RP-37.2 (1964) typical values, referenced +75°F (+24°C) unless otherwise noted. Calibration data, traceable National Institute Standards Technology (NIST), supplied. DYNAMIC CHARACTERISTICS CHARGE SENSITIVITY TYPICAL MINIMUM FREQUENCY RESPONSE RESONANCE FREQUENCY AMPLITUDE RESPONSE TEMPERATURE RESPONSE TRANSVERSE SENSITIVITY AMPLITUDE LINEARITY 2500 ELECTRICAL CHARACTERISTICS OUTPUT POLARITY RESISTANCE ISOLATION CAPACITANCE GROUNDING Units pC/g pC/g 17.0 13.5 Typical Amplitude Response (Typical) 6000 Typical Curve
MODEL 2221D
Acceleration into base unit produces positive output Signal return connected case. Case isolated from mounting surface insulated screw assembly
ENVIRONMENTAL CHARACTERISTICS TEMPERATURE RANGE HUMIDITY SINUSOIDAL VIBRATION LIMIT SHOCK LIMIT BASE STRAIN SENSITIVITY THERMAL TRANSIENT SENSITIVITY PHYSICAL CHARACTERISTICS DIMENSIONS WEIGHT CASE MATERIAL CONNECTOR MOUNTING TORQUE CALIBRATION SUPPLIED: CHARGE SENSITIVITY MAXIMUM TRANSVERSE SENSITIVITY CAPACITANCE FREQUENCY RESPONSE
equiv. strain equiv. pk/°F (/°C)
-67°F +350°F (-55°C +177°C) Epoxy sealed, non-hermetic 1000 5000 0.01 0.004 (0.007)
(oz)
lbf-in (Nm)
Outline Drawing (0.42) Stainless Steel Coaxial 10-32 thread
pC/g
8000 8000
ACCESSORIES Model EHM49 Model 2987 Model 3090C-120 (10ft) 10207
ALLEN WRENCH, 7/64 INCH ADHESIVE MOUNTING ADAPTER CABLE ASSEMBLY INSULATED MOUNTING SCREW, 6-32
OPTIONAL ACCESSORIES Model 2984M3 ADAPTER STUD 10-32 Model 2984M4 INSULATED ADAPTER STUD, 10-32 Model 2771AM3 IN-LINE CHARGE CONVERTOR WITH CONSTANT CURRENT SOURCE Model 2950M3 TRIAXIAL MOUNTING BLOCK
NOTES Low-end response transducer function associated electronics. Short duration shock pulses, such those generated metalto-metal impacts, excite transducer resonance cause linearity errors. Send TP290 more details. Maintain high levels precision accuracy using Endevco's factory calibration services. Call Endevco's inside sales force 800-982-6732 recommended intervals, pricing turnaround time these services well quotations standard products.
Continued product improvement necessitates that Endevco reserve right modify these specifications without notice. Endevco maintains program constant surveillance over products ensure high level reliability. This program includes attention reliability factors during product design, support stringent Quality Control requirements, compulsory corrective action procedures. These measures, together with conservative specifications have made name Endevco synonymous with reliability. ENDEVCO CORPORATION, 30700 RANCHO VIEJO ROAD, JUAN CAPISTRANO, 92675 (800) 982-6732 (949) 493-8181 (949) 661-7231 www.endevco.com Email:applications@endevco.com 1100

High Output, pC/g Light Weight 360° Cable Orientation Profile Vibratio

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