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