Atec Endevco-2272 - Manual (Page 2)

Model 2272
Piezoelectric accelerometer
Specifications
The following performance specifications conform to ISA-RP-37.2 (1964) and are typical values, referenced at +75˚F (+24˚C) and 100 Hz,
unless otherwise noted. Calibration data, traceable to National Institute of Standards and Technology (NIST), is supplied.
Dynamic characteristics Units 2272
Charge sensitivity
Typical
pC/g 13
Minimum pC/g 10.4
Frequency response See typical amplitude response
Resonance frequency, typical kHz 30
Minimum kHz 28
Amplitude response [1]
±5%
Hz 1 to 5000
±1dB (ref.) Hz 1 to 9000
Temperature response [3] See typical curve
Transverse sensitivity % ≤ 3
Amplitude linearity
Per 1000 g, 0 to 2000 g % 1
Electrical characteristics
Output polarity Acceleration directed into the base of the unit produces positive output
Resistance GΩ ≥ 10
at +500°F (+260°C) MΩ ≥ 100
Capacitance pF 2700
Grounding Signal ground connected to case
Environmental characteristics
Temperature range -452°F to +500°F (-269°C to +260°C)
Humidity Hermetically sealed
Sinusoidal vibration g pk 1000
Shock limit [2] g pk 2000
Base strain sensitivity equiv. g pk/μ strain 0.04
Thermal transient sensitivity equiv. g pk/˚F (/˚C) 0.08 (0.144)
Electromagnetic sensitivity equiv. g rms/gauss 0.0002
Acoustic sensitivity at 140 dB SPL equiv. g 0.001
at 170 dB SPL equiv. g 0.03
Pressure
Low frequency up to 1000 Hz
equiv. g/psi 0.01
Salt spray Will meet MIL-E-5272 with potted connector
Physical characteristics
Dimensions See outline drawing
Weight oz (gm) 0.95 (27)
Case material Stainless steel
Connector 10-32 UNF-2A Thd, mates with Endevco 3000 series cable
Mounting torque lbf-in (Nm) 18 (2)
Calibration
Supplied:
Charge sensitivity
pC/g
Capacitance pF
Maximum transverse sensitivity %
Charge frequency response % 20 Hz to 5000 Hz
dB 5000 Hz thru resonance
Continued product improvement necessitates that Endevco reserve the right to modify these specifications without notice. Endevco maintains a program
of constant 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. ALL RIGHTS RESERVED 30700 RANCHO VIEJO ROAD, SAN JUAN CAPISTRANO, CA92675 USA
(800) 982-6732 • (949) 493-8181 fax (949) 661-7231 • www.endevco.com • Email: [email protected] 080510
Notes:
1. Low-end response of the transducer is a function of its associated electronics.
2. Short duration shock pulses, such as those generated by metal-to-metal
impacts, may excite transducer resonance and cause linearity errors. Request
the TP290 for more details.
3. Exposure to rapid temperature changes greater than 100°F (38°C) per minute
may cause the device to produce spurious high frequency discharges for
several minutes.
4. 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 turnaround time for these services as
well as for quotations on our standard products.
Accessories:
Product Description 2272
92981-12 Mounting stud, 10-32, Hex I.D. Included
3090DV-120 Cable assembly, 10 ft Included
EHM464 Wrench, hex key Included
2981-3 Stud, 10-32 adapter Optional
133 Signal conditioner Optional
2771C In-line charge convertor IEPE powered Optional
2775B Signal conditioner Optional
6634C Signal conditioner Optional
4990A-X OASIS 2000 computer-controlled system with 428 and/or 433 Optional
CS330 Calibration cryogenic temperature response Optional
APPLIES TO CALIFORNIA FACILITY