SCA111T and SCA121T Series Stand Alone Inclinometer Single or Dual Axis Analog Output FEATURES BENEFITS • Silicon 3D MEMS sensor • Excellent long term stability • 0,1 ° accuracy • Sensing element controlled frequency response • Resolution < 0,001 ° • Outstanding shock durability • Operating temperature range -40...+85 °C • Harsh environment robustness • Long term stability < 0,02 ° • Shock resistance >20 000 g APPLICATIONS • Sensing element -3 dB @ 18 Hz • Platform tilt measurement • Main dimensions: 30x30x13 mm size, single or dual axis • Equipment and instrument condition monitoring • Voltage output • Inclination based position measurement • RoHS compatible • Rotational orientation measurement (dual axis) For customised product please contact VTI Technologies ELECTRICAL CHARACTERISTICS Parameter Condition Min. Typ Max. Units Unregulated or 7 16 35 V Applies to: -D02, -D03, -D07 Supply voltage regulated ratiometric 4.75 5 5.25 V Applies to: -D04, -D05 Current consumption 5mA Output load Resistive 10 kΩ Capacitive 20 nF PERFORMANCE CHARACTERISTICS Parameter Condition SCA111T-D02 SCA121T-D03 SCA121T-D07 SCA111T-D04 SCA121T-D05 Units (1 Measuring range ±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 (2, 5 Offset Output at 0 ° 2.5 2.5 2.5 2.5 2.5 V (5 Offset zero point error Max. deviation 11111 ° 0…70 °C ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ° Offset temperature error -25...85 °C ±0.6 ±0.6 ±0.6 ±0.6 ±0.6 ° Sensitivity Sine of inclination 70 35 70 35 35 mV/°(@offset pos.) 0…70 °C -0.8 ...0.3 -0.8 ...0.3 -0.8 ...0.3 -0.8 ...0.3 -0.8 ...0.3 % (5 Sensitivity temperature error -25...85 °C -1.5 ...0.5 -1.5 ...0.5 -1.5 ...0.5 -1.5 ...0.5 -1.5 ...0.5 % Nonlinearity Sinus output 0.1 N/A 0.1 N/A N/A ° (3 Frequency response –3 dB 18 18 18 18 18 Hz (4 Cross-axis sensitivity 33333 % Typical values unless otherwise specifi ed. Note 1 The measuring range is limited by the sensitivity and offset. Note 4 The cross-axis sensitivity determines how much inclination, perpendicular to the measuring Note 2 Offset specifi ed as Output @ 0 °. axis, couples to the output. Note 3 The frequency response is determined by the sensing element’s internal gas damping. Note 5 For optimum zero point accuracy, mounting angle of the part can be adjusted. The output has true DC (0 Hz) response. MEASURING DIRECTIONS X-axis Y-axis Mounting position 1 Mounting position 1 (Horizontal) Mounting position 2 Mounting position 2 (Vertical) Earth’s gravity Deviation Negative incl., Zero position, Positive incl. Deviation Positive incl., Zero position, Negative incl. Figure 1. Positions Notes: • 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. Rev. 3 / 1 Nov 2005 VTI Technologies reserves the right to modify this specifi cation without prior to notice. SCA111T and SCA121T Series ELECTRICAL CONNECTION SCA121T series SCA111T series Wire color Name Function Wire color Name Function Blue GND Ground Blue GND Ground Red V Power supply Red V Power supply cc cc 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 MECHANICAL SPECIFICATION MOUNTING Cable length: -D02, -D03, -D07 30 cm. The sensor module is to be mounted on a fl at and smooth surface -D04, -D05 110 cm with 2 screws, dimension M4. Mounting torque 5 ±1 Nm. Total weight: Approx. 60 grams Protection class: IP66 Housing: Zinc casting with passivation SENSOR DIMENSIONS Dimensions in mm. Figure 2. ORDERING INFORMATION SCA1X1T-D0Y Product type: See Perf.char. table Number of axis: 1=single axis, 2=dual axis 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 9 879 181 Tel. +49 69 6786 880 Tel. +1 313 425 0850 Fax +358 9 879 18791 Fax +49 69 6786 8829 Fax +1 313 425 0860 sales@vti.fi sales.de@vti.fi sales@vtitechnologies.com Ø 4.2