View 22_102546.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Piezoelectric Accelerometer
Model 22
* * * * * World's Smallest Accelerometer Extremely Light Weight (0.14 gm) Adhesive Mounting Ground Isolated Scale Model, Circuit Board, Disk Drive Testing
Actual size
ENDEVCO
MODEL 22
DESCRIPTION
The ENDEVCO Model 22 PICOMINTM is the world's smallest piezoelectric accelerometer, designed specifically for vibration measurement on small objects such as scaled models, circuit boards, and disk drives. Its light weight, (0.14 gm) effectively eliminates mass loading effects. The transducer is designed to have reverse polarity with respect to acceleration going into the mounting base. The accelerometer is a self-generating device that requires no external power source for operation.
(R)
6.00 (152.4) IDENTIFICATION LABEL
UNIT IDENTIFICATION
.141 (3.58)
DIA
The Model 22 features ENDEVCO's PIEZITE(R) Type P-8 crystal element, operating in radial shear mode, which exhibits excellent output sensitivity stability over time. Signal ground is isolated from the mounting surface of the unit by a hard anodized surface. Specially designed low-noise coaxial cable is supplied for error-free operation. A tool is included in the shipping case to ensure proper removal of the cable and transducer in the field. ENDEVCO Signal Conditioner Models 133, 2775A or OASIS 2000 Computer-Controlled System are recommended for use with this high impedance accelerometer.
# 1-64 UNC-2A THD. MATES WITH ENDEVCO 3095A CABLE
ENDEVCO 3003A CABLE ASSEMBLY (REPLACEABLE) .006 (0.15) .196 (4.98) XXXX .095 (2.41)
.020 (.51) .014 (.35)
DIA.
SERIAL NUMBER
STANDARD TOLERANCE INCHES (MILLIMETERS) .XX = +/- .02 (.X = +/- .5) .XXX = +/- .010 (.XX = +/- .25)
TYPICAL AMPLITUDE RESPONSE
20 15
TYPICAL TEMPERATURE RESPONSE
30 20 10 0 CHARGE SENSITIVITY -10 -20 -15 -20 100000 -30 300 (149)
TYPICAL CAPACITANCE 10
% DEVIATION
5 0 -5 -10
% DEVIATION
-100 (-73)
1
10
100
1000
10000
0 (-18)
100
200 (93)
FREQUENCY IN HERTZ
TEMPERATURE oF ( oC)
(38)
APPLIES TO CALIFORNIA FACILITY
ENDEVCO
Piezoelectric Accelerometer
SPECIFICATIONS
The following performance specifications conform to ISA-RP-37.2 (1964) and are typical values, referenced at +75F (+24C) and 100 Hz, unless otherwise noted. Calibration data, traceable to National Institute of Standards and Technology (NIST), is supplied. DYNAMIC CHARACTERISTICS CHARGE SENSITIVITY TYPICAL MINIMUM FREQUENCY RESPONSE RESONANCE FREQUENCY AMPLITUDE RESPONSE [1] 5% 1dB TEMPERATURE RESPONSE TRANSVERSE SENSITIVITY AMPLITUDE LINEARITY [3] To 500 g 500 g to 4000 g ELECTRICAL CHARACTERISTICS OUTPUT POLARITY RESISTANCE ISOLATION CAPACITANCE Including 6 inch Model 3003A-6 ISOLATION CAPACITANCE GROUNDING ENVIRONMENTAL CHARACTERISTICS TEMPERATURE RANGE HUMIDITY SINUSOIDAL VIBRATION LIMIT SHOCK LIMIT [2] BASE STRAIN SENSITIVITY ELECTROMAGNETIC SENSITIVITY PHYSICAL CHARACTERISTICS DIMENSIONS WEIGHT UNIT ONLY UNIT WITH CABLE CASE MATERIAL CABLE DESCRIPTION [4] G G pF pF Units pC/g pC/g kHz Hz Hz % % % per 200 g 0.40 0.30 See Typical Amplitude Response 54 1 to 10 000 .5 to10 000 See Typical Curve <5 1 1
MODEL 22
Acceleration directed into the base of the unit produces negative output 10 1 250 50 Signal ground isolated from mounting surface
g pk g pk equiv. g/ strain equiv. g rms/gauss
-100F to +300F(-73C to +149C) Epoxy Sealed, non-hermetic 2500 10 000 0.008 0.0009
See Outline Drawing gm (oz) gm (oz) 0.14 (0.005) 0.4 (0.014) Aluminum Alloy, Hard Anodized 0.013 diameter TFE insulated coaxial cable, 0.003 diameter CRES center conductor, Teflon dielectric. CRES outer sheath Adhesive
MOUNTING [5] CALIBRATION SUPPLIED: CHARGE SENSITIVITY VOLTAGE SENSITIVITY With 6 inch replaceable cable TRANSDUCER CAPACITANCE Including 6 inch replaceable cable CABLE CAPACITANCE TRANSVERSE SENSITIVITY CHARGE FREQUENCY RESPONSE ACCESSORIES P/N 17267
pC/g mV/g pF pF % %
20 Hz to 10 kHz 4. See instruction manual before removing cable assembly. 5. Depending on the dynamic and environmental requirements, adhesives such as petro-wax, hot-melt glue, and cyanoacrylate epoxy (super glue) may be used to mount the accelerometer temporarily to the test structure. An adhesive mounting kit (P/N 31849) is available as an option from Endevco. *Removing epoxy-mounted accelerometers by, first softening the epoxy with an appropriate solvent, then twist the unit off with the supplied removal tool. Failure to heed this caution may cause permanent damage to the transducer, which is not covered under warranty. 6. 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.
ACCELEROMETER AND CABLE REMOVAL WRENCH* Model 3095A-120 (10 ft) CABLE ASSEMBLY P/N 16426 CAPSULE OF SILICONE COMPOUND Model 3003A-6 (6 In.) CABLE ASSEMBLY NOTES 1. Low-end response of the transducer is a function of its associated electronics. 2. When exposed to high g, and large displacement, the cables must be tied down as close to the accelerometer as possible to prevent cable whip and subsequent cable failure. 3. Short duration shock pulses, such as those generated by metal-to-metal impacts, may excite transducer resonance and cause linearity errors. Send for TP290 for more details.
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, 30700 RANCHO VIEJO ROAD, SAN JUAN CAPISTRANO, CA 92675 USA (800) 982-6732 (949) 493-8181 fax (949) 661-7231 www.endevco.com Email:applications@endevco.com 0901

▲Up To Search▲

Price & Availability of 22

	To Download 22 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .