SCA220 Series Stand Alone Accelerometer FEATURES BENEFITS • Stand alone accelerometer in plastic housing • Excellent overload durability (1.5 m drop proof) • Available range:±2g • Plastic housing makes the accelerometer IP6K9K • Accurate over a wide temperature range -40°C ... +85°C • Meet typical automotive EMC requirements without any compensation • Easy to use • Electrical connection with integrated connector • Standard analogue output (ratiometric) APPLICATIONS • Standard bracket and mating connector upon request • Acceleration measurement • Inclination measurement • Motion measurement For customised product please contact VTI Technologies ELECTRICAL CHARACTERISTICS Parameter Condition Min. Typ Max. Units Supply voltage (1 4,5 5,5 V Current consumption 2,0 4,0 mA Analogue output load 10 mOhm 20 nF Output Analogue Voltage PERFORMANCE CHARACTERISTICS Parameter Condition SCA220-C24H1G Units (1 Measuring range ±2 g (2, 3, 4 Offset Output at 0g @ 23 °C 2,5 V Offset temperature error -40..85°C ±60 mg (3 Sensitivity @ 0g (offset position) 1 V/g (3 Sensitivity temperature error -40..85°C ±3 % Non-linearity ±2g ±40 mg (5 Frequency response –3dB 45 Hz Output noise 5 mVrms (6 Cross-axis sensitivity ±4 % Typical values unless otherwise specified. Note 1. The measuring range is limited by the sensitivity and offset. Note 5. The frequency response is determined by the sensing element’s internal gas damping. Note 2. Offset specified as Output @ 0g. The output has true DC (0Hz) response. Note 3. Mounting position should be calibrated. See measuring positions. Note 6. The cross-axis sensitivity determines how much acceleration or inclination, perpendicular Note 4. Vdd 5V, unless otherwise specified. to the measuring axis, couples to the output. The total cross-axis sensitivity is the geometric sum of the sensitivities of the two axises which are perpendicular to the measuring axis. ABSOLUTE MAXIMUM RATINGS MEASURING DIRECTIONS Parameter Value Units (1 Over voltage protection 16 V Reverse voltage protection 16 V Acceleration (powered or non-powered) >20000 g Rev. 26 Aug 2004 VTI Technologies reserves the right to modify this specification without prior 6.3 SCA220 Series ELECTRICAL CONNECTION Pin Function Mating connector: 2 AMP 2-967642-1 MQS, Socket housing, SWS, 3 pos.assy 1 Accsig (signal output) 3 1 AMP 965907-1, Sn Plated socket terminal for 0.75mm2 wire 2 GND AMP 967067-1, wire seal, green silicone for ø1.4…1.9mm wire 3 Vdd MECHANICAL SPECIFICATION MOUNTING Sensor weight: 23 grams Sensor mounting Total weight: 100 grams (with bracket) Bracket 37052 Protection class: IP6K9K (DIN 400050) Clip 37053 Metal part : Housing: PBT + 30% glass fiber Bracket: Yellow passivated steel Bracket mounting Screws: M6 Torque: 10 ± 2Nm SENSOR DIMENSIONS Dimensions in mm. 32 25.8 59 77.6 - + MEASURING DIRECTION CLIP ASSEMBLY-ONLY FOR INFORMATION 9.3 7.4 57±0.3 Acceleration in the direction of the arrow will increase the output voltage VTI Technologies Oy VTI Technologies Oy VTI Technologies, Inc. Myllynkivenkuja 6 Frankfurt Branch One Park Lane Blvd. P.O. Box 27 Rennbahnstr. 72-74 Suite 804 - East Tower FI-01621 Vantaa D-60528 Frankfurt am Main Dearborn, MI 48126 Finland Germany USA Tel. +358 9 879181 Tel. +49 69 6786 880 Tel. +1 313 425 0850 Fax +358 9 87918791 Fax +49 69 6786 8829 Fax +1 313 425 0860 sales@vti.fi sales.de@vti.fi sales@vtitechnologies.com R26 90 ±0.5 R5 max.41.5 2 25 XXX XXXX XXX SCA220-XXXXX 1251000012 FIN 6.3