SCA111T VTI | Alldatasheet

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Technical content

Rev. 3 / 1 Nov 2005 VTI Technologies reserves the right to modify this specifi cation without prior to notice. SCA111T and SCA121T Series Stand Alone Inclinometer

FEATURES

  • Silicon 3D MEMS sensor
  • 0,1 ° accuracy
  • Resolution < 0,001 °
  • Operating temperature range -40...+85 °C
  • Long term stability < 0,02 °
  • Shock resistance >20 000 g
  • Sensing element -3 dB @ 18 Hz
  • Main dimensions: 30x30x13 mm size, single or dual axis
  • Voltage output
  • RoHS compatible BENEFITS
  • Excellent long term stability
  • Sensing element controlled frequency response
  • Outstanding shock durability
  • Harsh environment robustness

APPLICATIONS

  • Platform tilt measurement
  • Equipment and instrument condition monitoring
  • Inclination based position measurement
  • Rotational orientation measurement (dual axis) Single or Dual Axis Analog Output

ELECTRICAL CHARACTERISTICS

Min. Typ Max. Units Supply voltage Unregulated or regulated ratiometric 4.75 5.25 V V Applies to: -D02, -D03, -D07 Applies to: -D04, -D05 Current consumption mA Output load Resistive kΩ Capacitive nF PERFORMANCE CHARACTERISTICS Parameter Condition SCA111T-D02 SCA121T-D03 SCA121T-D07 SCA111T-D04 SCA121T-D05 Units Measuring range (1 ±30 ±90 ±30 ±90 ±90 Supply voltage 7 ...35 7 ...35 7 ...35 5 ±0.25 5 ±0.25 V Measuring axis (see “Directions”) X X-Y X-Y X X-Y Offset (2, 5 Output at 0 ° 2.5 2.5 2.5 2.5 2.5 V Offset zero point error (5 Max. deviation Offset temperature error 0…70 °C -25...85 °C ±0.2 ±0.6 ±0.2 ±0.6 ±0.2 ±0.6 ±0.2 ±0.6 ±0.2 ±0.6 Sensitivity Sine of inclination mV/°(@offset pos.) Sensitivity temperature error (5 0…70 °C -25...85 °C Nonlinearity Sinus output 0.1 N/A 0.1 N/A N/A Frequency response –3 dB (3 Hz Cross-axis sensitivity (4 Typical values unless otherwise specifi ed. For customised product please contact VTI Technologies Note 1 The measuring range is limited by the sensitivity and offset. Note 2 Offset specifi ed as Output @ 0 °. Note 3 The frequency response is determined by the sensing element’s internal gas damping. The output has true DC (0 Hz) response. Note 4 The cross-axis sensitivity determines how much inclination, perpendicular to the measuring axis, couples to the output. Note 5 For optimum zero point accuracy, mounting angle of the part can be adjusted. Figure 1. Positions

  • It is important that the part is parallel to the mounting plane, and that the output equals the zero value when sensor is in zero position.
  • Zero position: Please note the picture above which provides information on how the output of the accelerometer behaves in different circumstances when assembled. Please also note that you can rotate the part around the measuring plane for optimum mounting location. MEASURING DIRECTIONS Mounting position 1 (Horizontal) X-axis Y-axis Negative incl., Zero position, Positive incl. Positive incl., Zero position, Negative incl. Earth’s gravity Mounting position 2 (Vertical) Mounting position 1 Mounting position 2 Deviation Deviation

P.O. Box 27 FI-01621 Vantaa Finland Tel. +358 9 879 181 Fax +358 9 879 18791 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 ELECTRICAL CONNECTION SCA111T and SCA121T Series Wire color Name Function Wire color Name Function Blue GND Ground Blue GND Ground Red Vcc Power supply Red Vcc Power supply Yellow Out X X-axis output Yellow Not connected Green Out Y Y-axis output Green Not connected White Not connected White Output X-axis output Cable length: -D02, -D03, -D07 30 cm. -D04, -D05 110 cm Total weight: Approx. 60 grams Protection class: IP66 Housing: Zinc casting with passivation MECHANICAL SPECIFICATION MOUNTING SENSOR DIMENSIONS Figure 2. Ø 4.2 Dimensions in mm. The sensor module is to be mounted on a fl at and smooth surface with 2 screws, dimension M4. Mounting torque 5 ±1 Nm. SCA111T series SCA121T series

ORDERING INFORMATION

Product type: See Perf.char. table Number of axis: 1=single axis, 2=dual axis