WALKER FILTRATION PROSFD Series Manual
                                                          | |
Contents
| 
37Using an Electronic Pressure Switch for Purge ControlThe best choice if using a pressure switch is to select anelectronic programmable type pressure switch which iseffectively a pressure transmitter and process controllerbuilt into one device. While significantly more costly thana standard pressure switch, an electronic programmablepressure switch can be setup to provide a much morecustomized operation. Typically, the dead band can bereduced or eliminated so that an immediate reaction tosystem pressure in system indicating air flow, canbe obtained.Section 7: Energy ManagementFigure 7.6 Electronic pressure switch for purge control (LED Controller)37PRODRY PD0046 - PD0360 Instruction Manual | Walker Filtration |signal)Using an electronic pressure switch for purge controlThe best choice if using a pressure switch is to select anelectronic programmable type pressure switch which iseffectively a pressure transmitter and process controllera standard pressure switch, an electronic programmablepressure switch can be setup to provide a much morecustomised operation. Typically, the dead band can bereduced or eliminated so that an immediate reaction toIt is extremely important to understand that the purge mayonly be shut during periods of low or no demand. Thisfeature, if used otherwise, can result in permanent damageto the desiccant beds resulting in loss of drying capacityand possibly mechanical failure. The cartridges must not beallowed to become fully saturated at any time.an overview of the devicesmentioned as they might be connected for use in controllingd er between device manufacturers, so in all cases theSe ct io n 7: Energy ManagementThis setup is for example only. This configuration can beamended, depending on application.SYSTEM PRESSURE (psig)PURGE ON (switch deactivated) PURGE ON (switch deactivated)PURGE OFF (switch activated) PURGE OFFONOFF1051009590858580ADJUST TO SUIT SYSTEM(pressure switch deactivation point)Fig 7.5 P ressu re switch setti ngDC PowerSupply-VDC (COM)+VDC+VDCOutputCOMElectronicPressure SwitchRelayN.C.*Fig ure 7.6 Electr onic press ure switc h f or p urge co ntro l (LED Cont) Fig ure 7.7 Electr onic press ure switc h f or p urge co ntro l (DMC Cont)* Normally open, close to turn off purgePin 1Pin 2Signal Out to Switch (+24VDC)DMCController123* Normally Closed, open to turn purge offSignal BackDC PowerSupply-VDC (COM)+VDC+VDCOutputCOMElectronicPressure SwitchRelayN.O.*Signal BackLED ControllerPin 1(Puts out+5 VDCsignal)Pin 21 23Figure 7.7 Electronic pressure switch for purge control (DMC Controller)37PRODRY PD0046 - PD0360 Instruction Manual | Walker Filtration |signal)Using an electronic pressure switch for purge controlThe best choice if using a pressure switch is to select anelectronic programmable type pressure switch which iseffectively a pressure transmitter and process controllera standard pressure switch, an electronic programmablepressure switch can be setup to provide a much morecustomised operation. Typically, the dead band can bereduced or eliminated so that an immediate reaction toIt is extremely important to understand that the purge mayonly be shut during periods of low or no demand. Thisfeature, if used otherwise, can result in permanent damageto the desiccant beds resulting in loss of drying capacityand possibly mechanical failure. The cartridges must not beallowed to become fully saturated at any time.an overview of the devicesmentioned as they might be connected for use in controllingd er between device manufacturers, so in all cases theSe ct io n 7: Energy ManagementThis setup is for example only. This configuration can beamended, depending on application.SYSTEM PRESSURE (psig)PURGE ON (switch deactivated) PURGE ON (switch deactivated)PURGE OFF (switch activated) PURGE OFFONOFF1051009590858580ADJUST TO SUIT SYSTEM(pressure switch deactivation point)Fig 7.5 P ressu re switch setti ngDC PowerSupply-VDC (COM)+VDC+VDCOutputCOMElectronicPressure SwitchRelayN.C.*Fig ure 7.6 Electr onic press ure switc h f or p urge co ntro l (LED Cont) Fig ure 7.7 Electr onic press ure switc h f or p urge co ntro l (DMC Cont)* Normally open, close to turn off purgePin 1Pin 2Signal Out to Switch (+24VDC)DMCController123* Normally Closed, open to turn purge offSignal BackDC PowerSupply-VDC (COM)+VDC+VDCOutputCOMElectronicPressure SwitchRelayN.O.*Signal BackLED ControllerPin 1(Puts out+5 VDCsignal)Pin 21 2337PRODRY PD0046 - PD0360 Instruction Manual | Walker Filtration |signal)Using an electronic pressure switch for purge controlThe best choice if using a pressure switch is to select anelectronic programmable type pressure switch which iseffectively a pressure transmitter and process controllera standard pressure switch, an electronic programmablepressure switch can be setup to provide a much morecustomised operation. Typically, the dead band can bereduced or eliminated so that an immediate reaction toIt is extremely important to understand that the purge mayonly be shut during periods of low or no demand. Thisfeature, if used otherwise, can result in permanent damageto the desiccant beds resulting in loss of drying capacityand possibly mechanical failure. The cartridges must not beallowed to become fully saturated at any time.an overview of the devicesmentioned as they might be connected for use in controllingd er between device manufacturers, so in all cases theSe ct io n 7: Energy ManagementThis setup is for example only. This configuration can beamended, depending on application.SYSTEM PRESSURE (psig)PURGE ON (switch deactivated) PURGE ON (switch deactivated)PURGE OFF (switch activated) PURGE OFFONOFF1051009590858580ADJUST TO SUIT SYSTEM(pressure switch deactivation point)Fig 7.5 P ressu re switch setti ngDC PowerSupply-VDC (COM)+VDC+VDCOutputCOMElectronicPressure SwitchRelayN.C.*Fig ure 7.6 Electr onic press ure switc h f or p urge co ntro l (LED Cont) Fig ure 7.7 Electr onic press ure switc h f or p urge co ntro l (DMC Cont)* Normally open, close to turn off purgePin 1Pin 2Signal Out to Switch (+24VDC)DMCController123* Normally Closed, open to turn purge offSignal BackDC PowerSupply-VDC (COM)+VDC+VDCOutputCOMElectronicPressure SwitchRelayN.O.*Signal BackLED ControllerPin 1(Puts out+5 VDCsignal)Pin 21 23Figure 7.5: Typical installationIt is extremely important to understand that the purge mayonly be shut off during periods of low or no demand. Thisfeature, if used otherwise, can result in permanent damageto the desiccant beds resulting in loss of drying capacityand possibly mechanical failure. The cartridges must not beallowed to become fully saturated at any time.Figures 7.6 and 7.7 offer an overview of the devicesmentioned as they might be connected for use in controllinga dryer’s purge function. Please note that specific detailsdiffer between device manufacturers, so in all cases themanufacturer’s specifications should be adhered to.This setup is for example only. This configurationcan be amended, depending on application. |
Related manuals for WALKER FILTRATION PD0090
manualsdatabase
Your AI-powered manual search engine