3021 ETC1
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2ZS3ENSORS Accelerometer Models 3021 and 3026 a OEM Accelerometer 2 Eee Piezoresistive aceees abt eA ie Low Cost nee oO i « Full Calibration Data Supplied 4. , = Serialized mS mer 4 = DC Response { - ae a Wide Bandwidth fad .- 7 ’ @ High Sensitivity # Built-In Damping = Miniature Size : = Low Mass wa ® Built-In Overrange Stops ® Solid State Reliability Description = Ease of Mounting The Models 3021 and 3026 are general purpose, solid- state piezoresistive accelerometers packaged on a ceramic Typical Applications substrate. The Model 3026 includes a bracket for easy . . mechanical mounting. Both models are intended for use ® Automotive Suspension Control where small size, excellent performance, and low cost are = Automotive Braking Control required. s= Machine Tool Monitoring . = Industrial Vibration Monitoring nase suaperdied by muttinie Deane from a oitcon Nene ® Computer Peripherals Piezoresistors located in the beams change their resist- = Modal Analysis ance as the motion a suspended mass changes the ‘ i strain in the beams. Silicon caps on the top and the bot- = Security Systems Motion Detection tom of the device are added to provide over-range stops 2 Ptr a4 eight Navigation and unussally high shock reobetance and durability. AS a s obdotic otion ontro! result of tl unique three-layer silicon structure, t! s Applicance Control accelerometers have a very low profile and low mass and Hark batch fabricated at a very low cost. An added result of = Medical Patient Activity Monitoring this structure is built-in camping, which allows & wider = Military Arming and Fuzing useable bandwidth to be achieved. A detailed calibration sheet that provides the measured Standard Ranges test and celibration data for the sensor is included with + 29 each unit. A sample of this calibration sheet is on the back of this data sheet as Figure 2. In addition to the test t+ 59 data, the values of calibration and temperature compensa- + 10g tion resistors are also included. + 209 The devices are available in standard acceleration ranges = 90g trom + 2g to + 600g. Each sensor Is individually serial- £ 100g ized. Device performance characteristics and packaging + 200g can be easily tailored on a special order basis to meet the + 500g requirements of specific applications.
I Accelerometer es Performance Specifications Supply = 5 Volts & Ambient Temperature = 25°C (Uniess otherwise specitied) ae eee ee ee quency Response {MIN} (See Nobes 9 and 11) | o-250 rte | o300H2 | 0-400 | 0-600 Hz _| Moura Resonant Frequency (MIN) (See Ne@) | TOOK | eooH2 | 1000He | 1500 Hz | re Frequency Response (MIN) (See Notes 9 aod 11) Mounted Resonant Frequency (MIN) (See Note @. 12) | 2000 Hz | 3000Hz | 4000Hz | 5000 Hz _| a | Zero Avoeleration Outpt | | | | Tl |_Sampinghato To or | oe Pe ee ee & Oaput Resistance [as [os | ko fs | Temperature Coeticient -Senaiivty | S| 10 | 0 | awrs | 59 | |_Tomperature Coefficient Zoo | To fo ters aso | J Outpt noise to et Output Load Resistance a ee Accaeration Limits (Ary Direction [ax [eae opeatng Torpecie SS SSS*dtCC a a | Storage Temperature tector |_Materiats (9021 Package) Materials (3026 Package) Alumina cera substrane with high impact Ultem™plastic cap Two slotted holes for 4-40 serews 1 6 in - Bs, tong Notes 1. Positive voltage change for positive acceleration; negative voltage change for negative acceleration. 2. Percentage values are with external compensation. The uncompensated temperature coefficients are measured and specified for each unit. In addition, the values of the resistors that provide a temperature compensated output are pro- vided with each unit. These resistors are for use in the circuit shown in Figure 1. 3, Damping factor is controlled to within +10% over operating temperature range. Alternate damping ratios are available ‘on @ special order basis. 4. Best Fit Straight Line linearity, For full scale ranges of 10g or less, the maximum non-linearity is + 2%. 5. Temperature range: 0-50°C in reference to 25°C. 6. Prevents increase of TC-Sensitivay and decrease of sensitivity due to oviput loading 7. Various electrical connections are available: P = pins, S = shielded cable, N = none. 8. 400g for t 29, 5g, and + 10g versions. 20X of 2000g, whichever is lower, for other versions, 9. Actual test data for this parameter is included on the calibration sheet included with each sensor. A sample of this cal- ibration sheet is on the back of this data sheet as Figure 2 10. 10HZ to 1kHz. 11. The useful frequency range is defined as the range of frequencies over which the device sensitivity is within +5% of the DC value. 12. For sensors having resonant frequency greater than 5 KHz, the calibration data sneet will indicate “ >5 kHz." In addition, the damping ratio will indicate N/A.
Models 3021 and 3026 Accelerometer a Connections/Dimensions ~—e- ou I. - .__| ne _. mans ff fo ee + Latina rs et "4 I «w—— atyre WZ SHEL DED CABLE = -ox0 {IG AALE COMMAETON TOwHINALS { + ACCELERATION i 3021-00-P (3021-100-S 2026-00-S ALL DIMENSIONS ARE IN INCHES ACCELEROMETER EQUIVALENT CAROYIT aneor 2g as L ww 2 4 ! - Oe tho ane =F] ' a me Wg wes | . KJ 30 L "oan | i} i Ay S4sLoRD canes yenBons SEER RE SOR von SENG Coenen Boobs) Ordering Information Represented By 3026 - 050 - S i i Electrical Connection (P,N.S — see Note 7) _——— Acceleration Range Model 0 Sensors products are werraried agairat Gefects in material ed workmanship tor 12 months trom date of stepmant Products not subjected to misuse wil be repaired oF repiened. TE FOREGOING 6 IN LIEU OF ALL OTHER EXPRESSED OF IMPLIED WAAIRANTIES. IO Sensors semerves the right to make changes 10 any product herein and assumes no ketilty tiaing cut of te apptoation oF use of any produc or uM Geetiond of alarnesed hare ZEBSEnsSoRS 1701 McCarthy Bivd. Milpitas, California 96035-7416 Fax (408) 432-7322 Phone (408) 432-1800 M302 IRE - 9308 Printed in USA