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  • VARIO® chemistry diaphragm pump MD 4C EX VARIO

    VARIO® chemistry diaphragm pump - MD 4C EX VARIO
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    MD 4C EX VARIO

    Performance features

    • full advantage of ATEX chemistry diaphragm pumps
    • VARIO®: short process times due to hysteresis-free VARIO® vacuum control
    • VARIO®: VARIO®-pump operates on demand only as fast as necessary – minimal power consumption, extended maintenance intervals, silent operation
    • VARIO®: vacuum controller VACUU·SELECT (optional) for precise vacuum control and fully automatic processes
    • ATEX vacuum sensor and Connection Box 100 for easy installation – from one source

    Technical data

    Technical dataUnit MD 4C EX VARIO
    Vacuum controllerwithout controller
    Number of heads / stages4 / 3
    Max. pumping speedm3/h3.7
    Max. pumping speedcfm2.2
    Ultimate vacuum (abs.)mbar/torr3 / 2.3
    Ultim. vac. (abs.) with gas ballastmbar/torr10 / 7.5
    Integral leakage ratembar l/s0.1
    Ambient temperature range (operation)°C10 - 40
    Ambient temperature range (storage)°C-10 - 60
    Max. media temperature°C40
    Max. back pressure (abs.)bar1.1
    Inlet connectionsmall flange KF DN 25
    Outlet connectionsmall flange KF DN 16
    Rated motor powerkW0.25
    Max. operating currentA3.2
    Max. starting currentA150A / 2.5ms
    Motor speed rangemin-130 - 1500
    Rated speedmin-11500
    Protection classIP 54
    Dimensions (L x W x H), approx.mm469 x 265 x 305
    Weight, approx.kg28
    Noise level at 50 Hz, typ.dBA42
    ATEX conformityPumping chamber (pumped gases): II 2G Ex h IIC T3 Gb X
    Environment with inert purge gas: II 2G Ex h IIB T4 Gb X
    Environment without inert purge gas: II 3G Ex h IIB T4 Gc X
    Motor: II 2G Ex d IIB T4 Gb
    Items suppliedPump completely mounted, ready for use, with manual. Speed control via 4-20 mA current loop (4 mA = 0 rpm, 20mA = 1500 rpm). Control signal and mains cable length 10 m, without plugs.
    AccessoriesPTFE tubing KF DN 16 (1000 mm: 20686031)
    PTFE tubing KF DN 25 (1000 mm: 20686033)
    Vacuum sensor ATEX 0,1% FSO* 4-20mA (20635423)
    Vacuum sensor ATEX 0,3% FSO* 4-20mA (20635424)
    Vakuum-Controller VACUU·SELECT (20700050)
    Connection Box 100 (20635435)

    * In der Connection Box 100 sind mehrere Komponenten verbaut, die für die Auswertung des Sensorsignals erforderlich sind. Durch diese Messkette steigt die Unsicherheit des am Vakuum Controller angezeigten Vakuumwertes auf +- 3 mbar (für Sensor 20635423 mit FSO 0,1 %) und +- 4 mbar (für Sensor 20635424 mit FSO 0,3 %).

    MD 4C EX VARIO - Pumping speed graph

    MD 4C EX VARIO - Pumping speed graph

    MD 4C EX VARIO - Pump down graph (100 l volume)

    MD 4C EX VARIO - Pump down graph (100 l volume)

    MD 4C EX VARIO - Dimension sheet

    MD 4C EX VARIO - Dimension sheet

    MD 4C EX VARIO - Configuration example

    MD 4C EX VARIO - Configuration example

    -Technical data are subject to change without notice-

    Product comparison

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    VARIO® chemistry diaphragm pumpMD 4C EX VARIO

    VARIO® chemistry diaphragm pump MD 4C EX VARIO
    -3 10 3.7 3.7--------

    VARIO® chemistry vacuum systemMD 4C EX
    VARIO +AK+EK

    VARIO® chemistry vacuum system MD 4C EX VARIO +AK+EK
    MD 4C EX VARIO 3 10 3.7 3.7------

    Chemistry diaphragm pumpMV 10C EX
    VARIO

    Chemistry diaphragm pump MV 10C EX VARIO
    -2 10 8.1 8.1--------

    VARIO® chemistry diaphragm pumpMV 10C EX
    VARIO +AK+EK

    VARIO® chemistry diaphragm pump MV 10C EX VARIO +AK+EK
    MV 10C EX VARIO 2 10 8.1 8.1------