360° Cable Orientation Hermetically Sealed +400°F (+204°C) Requires Ex

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360° Cable Orientation Hermetically Sealed +400°F (+204°C) Requires Ex

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Model 7221A
360° Cable Orientation Hermetically Sealed +400°F (+204°C) Requires External Power General Purpose, Aerospace Applications
ENDEVCO
MODEL 7221A
Actual size
DESCRIPTION
ENDEVCO® Model 7221A small, piezoelectric accelerometer designed specifically general vibration measurement. accelerometer offers wide bandwidth operational temperature range, also hermetically sealed high reliability. light weight (10.5 effectively minimizes mass loading effects small structures. This accelerometer self-generating device that requires external power source operation. Model 7221A features ENDEVCO's PIEZITE® Type crystal element, operating annular shear mode, which exhibits base strain sensitivity excellent output stability over time. Signal ground connected outer case unit. When used with isolated mounting screw, electrically isolated from ground. centrally located mounting bolt permits 360° cable orientation, very desirable feature many applications. supplied low-noise coaxial cable required error-free operation. ENDEVCO Signal Conditioner Models 133, 2775A OASIS 482A, 433, recommended with this accelerometer.
TYPICAL AMPLITUDE RESPONSE
TYPICAL TEMPERATURE RESPONSE
DEVIATION
DEVIATION
100000
TYPICAL CAPACITANCE CHARGE SENSITIVITY (204)
1000
10000
FREQUENCY HERTZ
-100 (-73)
(-18)
(38)
(93)
(149)
TEMPERATURE (°C)
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 FREQUENCY RESPONSE RESONANCE FREQUENCY AMPLITUDE RESPONSE TEMPERATURE RESPONSE TRANSVERSE SENSITIVITY AMPLITUDE LINEARITY 2000 ELECTRICAL CHARACTERISTICS OUTPUT POLARITY RESISTANCE ISOLATION CAPACITANCE GROUNDING Units pC/g Typical Amplitude Response Typical Curve
MODEL 7221A
Acceleration directed into base produces positive output. Signal ground connected 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 CAPACITANCE MAXIMUM TRANSVERSE SENSITIVITY FREQUENCY RESPONSE
equiv. pk/µ strain equiv. g/°F (/°C)
-67°F 400°F (-55°C +204 Hermetically sealed 1000 5000 0.04 0.004 (0.007)
(oz)
lbf-in (Nm)
Outline Drawing 10.5 (0.37) Stainless steel 10-32 receptacle, mates with Endevco 3000 series cable. (1.1)
pC/g
ACCESSORIES Model 3090C-120 10207 EHM49
CABLE ASSEMBLY ISOLATED MOUNTING SCREW ASSY, 6-32 ALLEN WRENCH, 7/64 INCH
equivalent 6-32 screw. Maintain high levels precision accuracy using Endevco's factory calibration services. Call Endevco's inside sales force 800-982-6732 recommended intervals, pricing turn-around time these services well quotations standard products.
OPTIONAL ACCESSORIES Model 2987 ADHESIVE MOUNTING ADAPTOR 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 metal-to-metal impacts, excite transducer resonance cause linearity errors. Send TP290 more details. Mounting torque with optional mounting screws,
Optional In-Line Charge Convertor, Model 2771AM3
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 0799 1100

360° Cable Orientation Hermetically Sealed +400°F (+204°C) Requires Ex

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