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This is a three axis kit comprised of three ARS-09 or three ARS-09A sensors and a triaxial mounting block which allows the configuration of a triaxial sensor array.  The mounting block has three surfaces which can be used for mounting three linear accelerometers to make a 6 degree-of-freedom sensor array.  Linear accelerometers may be supplied by ATA Sensors or customer supplied.  For use with an ILC box, the ARS-09A must be specified.

Scale Factor (Sensitivity) -- The standard scale factor for the ARS-09 and ARS-09A are 5,700 mV/(rad/sec). We can provide custom scale factors to customer order over a range of values for a slight additional cost.  Any custom scale factor desired must be specified in mV/(rad/sec) or mV/(deg/sec). Increasing scale factors beyond this standard value will result in a reduction in frequency range. All three sensors will have the same sensitivity values unless otherwise specified by custom order.

Range -- The output signal range is determined by dividing the maximum output voltage by the scale factor. A higher scale factor will result in a more limited range. A standard ARS-09 or ARS-09A with a 5,700 mV/(rad/sec) scale factor and an output power voltage of ±10 V will have an angular velocity range of ± 1.75 rad/sec. 

Input Voltages (Excitation) -- Standard input voltages of + 5/-5 Vdc to +15/-15 Vdc are used for the ARS-09 and ARS-09A.  When the applications require operation from a single power source such a +12 Vdc, an ILC can be used to generate the dual voltage inputs to the three sensors.

Signal Conditioning and Power Supply Requirements -- The ARS-09 or ARS-09A Triaxial may be operated without a separate power regulator or in-line signal conditioning unit if the standard customer power supply is well regulated and without noise, and if the sensor output cables are of proper impedance, not more than 15 to 20 feet in length, and not subject to induced noise from external emi sources. ATA Sensors supplies optional cables for the ARS-09 and ARS-09A Triaxial which have the proper connectors, use Teflon® insulated wire with twisted pairs and heavy metal shielding to minimize noise.

Cables and connectors -- Two cable connection options are offered on the ARS-09 or ARS-09A Triaxial.  The ARS-09 or ARS-09A sensor has an integral cable built into the sensor. Standard cable lengths are approximately 7 meters (23 feet).  The ARS-09 has an un-terminated pigtail at the other end of the cable to allow for the customer to add their own connection to measurement equipment.  On the ARS-09A, the cable end has a 4 pin AirBorn® “M” series connector for attaching to an ILC box.

No sensor to ILC box cables are required for the ARS-09A when an ILC box will be used.   The ILC box utilizes 4-pin military specification AirBorn® connectors (male) MA-211-004-113-0000.  The output side of the ILC box uses corresponding CA-03 and CA-03AX cables which are 1.5 meters in length, have 6 pin “M” series AirBorn® connectors at the ILC box end, and pigtails at the other end to allow customer interface connectors to be added. Custom machined connector housings allow connectors to be locked to the ILC with screws provided.

In-Line-Converter (ILC) -- modules are offered by ATA Sensors to provide a complete measurement solution for power regulation and signal conditioning / amplification. The ILC modules applicable to the ARS-09A Triaxial are:

ILC-03xx -- This is a three sensor ILC unit which provides a DC/DC converter and signal conditioning / amplification in a single unit or a combination of these three functions. Units can only be configured at the time of manufacture, since they are fully encapsulated with special epoxy resins for ruggedness and durability at assembly. Signal conversion and gain options are exclusive; only one or the other may be specified.

•       As a power converter, the ILC will allow the user to supply a single excitation voltage (typically +10 to12 Vdc) and provides a bipolar voltage (±13.2 Vdc) output to the three sensors.  The order number for an ILC for power conversion has the letter “D” as the ILC first option indicator.  If no power conversion is desired, the letter “N” is specified.
  

•      As a signal conditioner, the ILC can covert the standard angular velocity output of the sensor to an angular acceleration signal. (The calibration data sheet provided with the ILC-01xA will specify the volts-per-volts output of the acceleration signal at 10 Hz. and at 100 Hz. This is a differential circuit. The gain at 100 Hz. will be ten times that at 10 Hz.) . The order number for an ILC for signal conversion from velocity to acceleration has the letter “A” as the second ILC option indicator.  The output signals of all three sensors will be converted unless a custom order configuration is specified.^1.
  

•      As an amplifier, the ILC will supply an amplified signal with gain of 1 to 1000 times normal signal output.  Standard versions are available in 1, 10, 100, or 1000 times gain. The order number for an ILC without additional gain (1x) is “F”.  The order number for an ILC for signal amplification from 1 to 10x has the letter “G” as the second ILC option indicator.  For gain from 1 to 100x, the letter “H” is specified.  For gain of 1000x, the letter “L” is specified.  (See examples below.)  Note that either gain or acceleration signal output can be supplied, not both.  The gain for all three sensor output signals will be the same unless a custom order configuration is specified.^1.

Allowable ILC Order Numbers for ARS-09A Triaxial:

^1.Custom order configurations require special quotations for price and availability.

All data is believed accurate at time of publication.  Specifications are subject to change without notice.
Copyright © 2002-2008  Applied Technology Associates. All rights reserved.  Revised:  02/23/2008