Sauter - Pneumatic controller RLP100 - TROX

TROX GmbHHeinrich-Trox-Platz47504 Neukirchen-Vluyn,GermanyTel. +49(0)2845 202 0Fax +49(0)2845 202 265www.trox.deE-mail: trox@trox.deDuct pressure independent control behaviourPressure differenceSupply/exhaust air sequence control, ratio controlFlow volume as % of max1000Pa8006004002000min unitFlow volume as % ofmaxM = maxSminM = minSmin unit0.2 bar∆minmax∆Supply airCommand signal p 6Actual value signal p Mmax100%Exhaust air1.0 barFlow volume controllerSauter RLP 100 F003Product informationFlow volume controlThe flow volume controller works independently of ductpressure, i.e. pressure swings effect no permanentchanges in flow volume.The controller tolerances (hysteresis) and the measuringposition lead to a flow volume deviation ∆ as shown in thediagram opposite.If the conditions laid down in the unit documentation (e.g.minimum pressure difference, entry flow conditions) are notkept to, larger deviations have to be reckoned with.Flow volume command signalThe characteristic curve of the command signal is limited atthe bottom by the min setting. This means that commandsignals below the set min do not result in any changes toflow volume.max settingThe max value corresponds to the flow volume thatis to flow when the command signal is 1.0 bar. The flowvolume is adjusted by the E adjuster, i.e. 1.0 bar inputsignal corresponds to 1.0 bar output signal for(customer flow volume)maxmin settingThe percentage figures refer to max . The settingmin = 0 is possible. For this, the adjusting knob must beturned anticlockwise by a quarter-turn past the stop at 20%to 100%.max setting = 100% 100%Supply/exhaust air sequence control,constant differenceFlow volume in %1201004020∆min setting=Sequence control (master/slave)Ratio controlA ratio control can be realised using the RLP 100 F003, i.e.supply and exhaust air must be in a fixed ratio to eachother for all operating conditions.minmaxConstant difference controlAt the ∆ adjuster, the set value (3 to 20% of ) the setvalue quantity is added to it..00.2 barCommand signal p 6Entry flow ∆1.0 bar4