Laversab 6600 User Manual
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Contents
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1SECTION 1INTRODUCTIONNote: Pt = Pitot , Ps1 = Primary Static, Ps2 = Secondary StaticThe model 6600 is a high accuracy automated pressure controller, specifically designed forcontrolling air data parameters such as altitude, airspeed, Mach and climb. It provides threeindependent outputs – Ps1, Ps2 and Pt, which allows the unit to be used on aircraft which use“smart” probes capable of reading Angle of Attack based on Static differential pressures. Thisinstrument can also be used to control pressures in units of inHg and mbar. The 6600 isequipped with internal pressure and vacuum pumps. The Remote unit is used to interfacewith the Main unit. The small size of the Remote unit allows it to be used in the cockpit of anaircraft.The 6600 has three high accuracy transducers that measure pressure in the range of 0 to 38inHg absolute on the Ps1 (primary static) output, 0 to 38 inHg absolute on the Ps2 (secondarystatic) output and 0 to 60 inHg absolute on the Pt (pitot) output. These transducers aredesigned to accurately measure the pressure of dry air over an ambient temperature range of -10oC to 50oC. The 6600 can be used by connecting only two outputs (Pt and Ps1) or all threeoutputs (Pt, Ps1, Ps2) to an aircraft. The 6600 is RVSM compliant.The 6600 allows the user to control altitude in feet, meters, inHg or mbar; Rate of change infeet/minute, meters/minute, inHg/min or mbar/min; airspeed in knots, mach, mph andkmph. The Ps2 port can be controlled in absolute units of feet, meters, inHg or mbar as wellas differential (Ps2-Ps1) units of differential inHg (Dfin), differential mbar (Dfmb), knots orkmph. The 6600 also allows the user to control EPR on the Pt output.The model 6600 features programmable limits on altitude, airspeed, mach number, climb rate,and static differential (Ps2-Ps1). These limits are checked during data entry and therebyprohibit entry of erroneous target values. These limits are also checked continuously duringoperation, and if any of these is exceeded, the unit automatically takes abortive action.The user has the ability to program into the 6600 a profile of set-points to be controlled in asequence. Once such a profile has been setup, the user can command the unit to move fromone set-point to the next simply by pushing the 'GO' button. Up to 50 points can be stored inone profile. The 6600 can store up to 12 such profiles in non-volatile memory at any one time.Calibration of the unit is required only once a year. This process is the only scheduledmaintenance function required on the 6600.The model 6600 comes with an RS232 interface. This interface is mainly used to downloadprofiles from a computer. |
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