stand alone inclinometer SCA115T and sca125t series features ? silicon 3d mems sensor ? rs-485 serial interface ? 11 bit resolution ? operating temperature range -40...+85c ? inclination and temperature output ? long term stability < 0,02 ? shock resistance >20 000g ? 30x30x13mm size, single or dual axis ? horizontal or vertical mounting 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) for customised product please contact vti technologies 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 measuring directions negative incl., zero position, positive incl. x-axis y -axis posit ive incl., zero position, negative incl. earths gravity mounting position 1 (horizontal) mounting position 2 (vertical) mounting position 1 mounting position 2 deviation deviation note 1. the measuring range is limited by the sensitivity and offset. note 2. offset speci?ed as output @ 0. note 3. the frequency response is determined by the sensing elements internal gas damping. the output has true dc (0hz) response. note 4. the cross-axis sensitivity determines how much inclination, perpendicular to the measuring axis, couples to the output. note 5. mounting position should be calibrated. see measuring positions. electrical characteristics parameter condition min. typ max. units supply voltage 7 16 35 v current consumption 20 ma output rs-485, half-duplex k ? data transfer speed 11 bit word 10 hz performance characteristics parameter condition SCA115T-d03 sca125t-d06 sca125t-d08 units measuring range (1 30 90 30 measuring axis (see directions) x x-y x-y offset (2, 5 output at 0, hex 03ff fs/2 fs/2 fs/2 offset temperature error 070c 0.2 0.2 0.2 -25...85c 0,6 0,6 0,6 resolution ( 5 @ 0 (offset position) 0,035 0,07 0,035 /lsb 11 11 11 bit/fs sensitivity sine of inclination 30 90 30 /fs sensitivity temperature error (5 070c 0,2 0,2 0,2 % -25...85c 0,5 0,5 0,5 % nonlinearity sinus output 0,1 n/a 0,1 frequency response C3db (3 18 18 18 hz cross-axis sensitivity (4 4 4 4 % typical values @ ambient temperature unless otherwise speci?ed. rev. 4 jan 2005 vti technologies reserves the right to modify this speci?cation without prior notice. single or dual axis rs-485 output
vti technologies oy myllynkivenkuja 6 p.o. box 27 fi-01621 vantaa finland tel. +358 9 879181 fax +358 9 87918791 sales@vti.? 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.? 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 ? 4 ? 4.2 SCA115T and sca125t series figure 2. figure 3. optional mounting bracket dimensions (in mm) : sensor dimensions ordering information mechanical specification mounting cable length: 30 cm the sensor module is to be mounted on a ?at and smooth surface with 2 screws, dimension m4. mounting torque 5 1 nm. total weight: approx. 60 grams (excluding connector) protection class: ip66 (excluding connector) metal part: housing: yellow chromated zinc casting bracket: yellow passivated steel electrical connection software levels wire color name function modules are available with different software levels: yellow a bus connection level output white b bus connection a ? acc/incl and temperature in counts (hex data) ? communication con?gurability (rs-485 bus) ? device address changeability green nc blue gnd ground red v cc power supply b ? a + output in mg, temperature in ?f or ?c ? adjustable averaging of acc/incl signal(s) ? adjustable offset for acc/incl signal(s) c ? a + b + output in mrad or degree ? adjustable offset for acc/incl signal(s) see separate manual for more detailed information sca1x5t-d0y, z software level: a, b or c product type: see perf.char. tabl e number of axis: 1=single axis, 2=dual axi s
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