Model 3052 * Vibration/Shock Monitoring PC Board Mountable Accelerometer * Modal Analysis Millivolt Output * Motion Control Integral Temperature Compensation * Crash Testing * Aerospace DESCRIPTION Accelerometers FEATURES * Adhesive Mount * 0.5% Non-linearity (typical) * 1.0% Temperature Performance (Typical) * DC Response * Built-in Damping * Built-in Overrange Stops * Low Power The Model 3052 is a piezoresistive silicon accelerometer with integral temperature compensation. It is packaged on a ceramic substrate with an epoxy sealed ceramic cover and is designed for adhesive mounting. The accelerometer consists of a micro machined silicon mass suspended by multiple beams from a silicon frame. Piezoresistors located in the beams change their resistance as the motion of the suspended mass changes the strain in the beams. Silicon caps on the top and bottom of the device are added to provide over-range stops. This design provides for a very low profile, high shock resistance, durability and built-in damping over a wide usable bandwidth. Each sensor is individually serialized. For an accelerometer with a mounting bracket which can be used to bolt the sensor to the mounting location see the Model 3058. For uncompensated accelerometers, please refer to the Models 3022 and 3028. STANDARD RANGES Range g Range g 2 * * * 20 * * * 5 10 2-18 50 100 I n t e r n e t : w w w. m s i u s a . c o m Te l : 1 - 7 5 7 - 7 6 6 - 1 5 0 0 N o r t h A m e r i c a To l l F r e e : 1 - 8 0 0 - 7 4 5 - 8 0 0 8 Fax: 1-757-766-4297 Accelerometer Selection Guide-Unamplified PC Board Mountable Accelerometer Model 3052 CALIBRATION DATA Figure 1. Calibration Data Sheet A calibration data sheet similar to the sample shown above is included with each unit. The calibration sheet provides the measured test and calibration data for the sensor. Accelerometers CONNECTIONS PIN NUMBER FUNCTION 1 GROUND 2 ICS USE ONLY 3 SUPPLY 4 -OUTPUT 5 +OUTPUT RESISTOR FUNCTION OHMS R1 Rzb 10-50 R2 Rset 250-350 R3 Rlo 800-1250 R5 Rhi 7.5K-50K R6 Rstc 3K-99K R7 Rztc 0.15M-4M Dec 2002 Accelerometer Selection Guide-Unamplified 2-19 PC Board Mountable Accelerometer Model 3052 PERFORMANCE SPECIFICATIONS Supply Voltage: 5.0 VDC Ambient Temperature: 25C (Unless otherwise specified) RANGE ______________________________________________________________ PARAMETERS 2g 5g 10g UNITS NOTES __________________________________________________________________________________________________________________________________________________ Frequency Response [MIN] 0-250 0-300 0-400 Hz 1, 2 __________________________________________________________________________________________________________________________________________________ Mounted Resonant Frequency [MIN] 700 800 1000 Hz 1 __________________________________________________________________________________________________________________________________________________ Sensitivity (MIN/MAX) 6.0/9.0 2.4/3.6 1.2/1.8 mV/g 1, 3 RANGE ______________________________________________________________ PARAMETERS 20G 50G 100G UNITS NOTES __________________________________________________________________________________________________________________________________________________ Frequency Response [MIN] 0-600 0-1000 0-1500 Hz 1, 2 __________________________________________________________________________________________________________________________________________________ Mounted Resonant Frequency [MIN] 1500 2000 3000 Hz 1, 4 __________________________________________________________________________________________________________________________________________________ Sensitivity (MIN/MAX) 0.6/0.9 0.24/0.36 0.12/0.18 mV/g 1, 3 PARAMETERS MIN TYP MAX UNITS NOTES __________________________________________________________________________________________________________________________________________________ Zero Acceleration Output 1 2 mV 1 __________________________________________________________________________________________________________________________________________________ Damping Ratio 0.4 0.7 0.9 1, 4 __________________________________________________________________________________________________________________________________________________ Non-linearity 0.5 1 % Span 5 __________________________________________________________________________________________________________________________________________________ Transverse Sensitivity 1 3 % Span __________________________________________________________________________________________________________________________________________________ Output Resistance 2.5 3.5 6.5 k __________________________________________________________________________________________________________________________________________________ Temperature Error - Sensitivity 1.0 2.0 % Span 1, 6 __________________________________________________________________________________________________________________________________________________ Temperature Error Zero 1.0 2.0 % Span 1, 6 __________________________________________________________________________________________________________________________________________________ Supply Voltage 5.0 10.0 VDC __________________________________________________________________________________________________________________________________________________ Current 1, 5 mA __________________________________________________________________________________________________________________________________________________ Output Noise 1.0 V p-p __________________________________________________________________________________________________________________________________________________ Output Load Resistance 5 M 7 __________________________________________________________________________________________________________________________________________________ Acceleration Limits (Any Direction) 20X Rated 8 __________________________________________________________________________________________________________________________________________________ Operating Temperature -40C to +125C __________________________________________________________________________________________________________________________________________________ Accelerometers Compensated Temperature Range 0C to +50C __________________________________________________________________________________________________________________________________________________ Storage Temperature -55C to +150C __________________________________________________________________________________________________________________________________________________ Weight 6.5 Grams Notes 1. Actual test data for this parameter is included on the calibration sheet included with each sensor. A sample of this calibration sheet is shown as Figure 1. 2. The useful frequency range is defined as the range of frequencies over which the device sensitivity is within 5% of the DC value. 3. Positive voltage change for positive acceleration; negative voltage change for negative acceleration. 4. For sensors having resonant frequency greater than 5 kHz, the calibration data sheet will indicate ">5 kHz". In addition, the damping ratio will indicate N/A. 5. Best Fit Straight Line. For full scale ranges of 10g or less, the maximum non-linearity is 2%. 6. Compensated temperature range: 0C to +50C in reference to 25C. 7. Prevents increase of TC-Span and sensitivity decrease due to output loading. 8. 400g for 2g, 5g and 10g versions, 20X or 2000g, whichever is lower, for other versions. I n t e r n e t : w w w. m s i u s a . c o m Te l : 1 - 7 5 7 - 7 6 6 - 1 5 0 0 N o r t h A m e r i c a To l l F r e e : 1 - 8 0 0 - 7 4 5 - 8 0 0 8 Fax: 1-757-766-4297 2-20 Accelerometer Selection Guide-Unamplified PC Board Mountable Accelerometer Model 3052 LTR 2 - 10 g 20 - 500 g 0.300 0.005 0.265 0.005 [7.62 0.13] [6.73 0.13] "B" DIM 0.250 0.005 0.240 0.005 [6.35 0.13] [6.10 0.13] "C" DIM 0.032 0.004 0.032 0.004 [0.81 0.10] [0.81 0.10] "A" DIM Accelerometers DIMENSIONS ORDERING INFORMATION 3052 - 005 - P Electrical Connection (P = Pins) Acceleration Range Model DEC 2002 Accelerometer Selection Guide-Unamplified 2-21