Product Information Motor-driven Diaphragm Dosing Pumps ...

1 Reliable Dosing of chemicalsMotor- driven Diaphragm Dosing Pumps play an important role in the reliable and accurate Dosing of liquids in the process cycles. They are appropriate for low-pressure applications and high Dosing Pumps are used in many branches of industry that work with liquid chemicals - not excluding toxic and aggressive on the crest of the wavesTwo models of the MEMDOS are available, each with or without micro-processor control. The smaller version can be used for capacities from to l/h and the larger version for capacities from to l/h. Pressures are admissible between 4 and 10 bar, depending on the to the sturdy tappet drive with manual or automatic capacity ad-justment, the conveyed media such as acids, lyes, precipitating agents and flocculents are dosed reliably and request, the MEMDOS Pumps can also be supplied with a double- Diaphragm system.

2 Then uncontrolled leakage of media is avoided even if the Dosing Diaphragm wears and flexibleMEMDOS E Pumps can be integrated in controls or automatic control constant Dosing without control, the motor of MEMDOS E is directly connected to the terminal box. A great variety of three-phase and single-phase motors is available for this purpose. To change the metering capacity, either the stroke length can be ad-justed mechanically or the speed of the three-phase motor can be con-trolled by means of a separate frequency converter. The intelligence of the MEMDOS DX is derived from the well-proved series of MAGDOS DE/DX solenoid metering MEMDOS DX controller allows the adaption to a large number of dif-ferent control signals and system monitoring equipment.

3 For the chemi-cal supply, for example, two controls are available: tank level control with alarm signal and low level indication. The signals required for external activation of the pump can be simple voltage-free closing contacts from water meters or controllers or analog 0 mA signals. Depending on the version, the MEMDOS DX can be adjusted continuously between 0 and 142 strokes/min. for internal control. A single stroke follows each Information Motor-driven Diaphragm Dosing Pumps MEMDOS E/DXIn short Suitable for accurate mixing tasks Capacity range 4 to 393 l/h, at up to 10 bar Minor dependence of the back pressure Linear development of the Dosing quantity according to the stroke length Tappet drive with manual and automatic capacity adjustment Also suitable for frequency converter operation Wide range of Dosing head materials Double- Diaphragm system optional Small stand, requires little space Batch Dosing optionalDosingConveyingControlL i q u i d sG a s e sS y s t e msTechnical dataMEMDOS E/DXSize48152526507576110150156160200260 300380 Capacity at max.

4 Pressure** volumeml / pressurebar10541086 Stroke frequency**1/min264895142142951421429514 2142719512095120 Diaphragm - mm526490120150 Stroke lengthmm6910 Suction liftmbar900800700600450 Max. ambient temperature* C40 Capacity E (3~)W50250370 Power DX (1~)W50120250 Insulation classFProtective classIP 55 Voltage at pulse input5 V DC (must be voltage-free for contact making)Voltage at level connection5 V DC (level probe with break contact for alarm/empty)Alarm reley, voltage- free changeo-ver contact250 V AC, A or 30 V DC, AWeight stain-less *) Ambient temperature for PVC metering head 40 C and for PP or stainless steel metering heads 60 C (for a short time 80 C). **) At 60 Hz operation the values increase by factor variantsMEMDOS E/DXPlasticStainless steelMaterialConnectionOrder 1/4104020101040202886/121040200410402022 G 1/41040201310404586156/12104020021040202 0G 1/4104020111040202925*6/1210402003104020 21G 1/4104020121040203026**6/121040243610402 857G 1/4104024371040409850 PVC/CSM6 1/4104020141040203275*d 161040235310402140G 1/4104020151040203376**d 161040245110404711G 1/41040243810404100110PP/CSMd 161040200810402026G 1/21040201710402035150*d 201040200910402027G 1/21040201810402036156**d 201040243910404080G 1/21040244010404102160d 201040205310402055G 1/21040205410402056200d 201040203710402045G 1/21040204110402049260*d 201040203810402046G 1/21040204210402050300d 201040203910402047G 1/21040204310402051380*d

5 201040204010402048G 1/21040204410402052*) Pump not suitable for 60 Hz operation **) Special size for 60 Hz operationPerformance curvesThe performance curves refer to water at 20 C (68 F) and a suction lift of m. The performance of the Dosing pump depends on the viscosity of the process fluid and hydraulic installation conditions. Dosing Pumps must therefore be gauged in litres during 40123456012345678910 Stroke adjustmentl/hrE/DX 80246810012345678910 Stroke adjustmentl/hrE/DX 1502468101214161820012345678910 Stroke adjustmentl/hrE/DX 25/26051015202530012345678910 Stroke adjustmentl/hrE/DX 500102030405060012345678910 Stroke adjustmentl/hrE/DX 75/760102030405060708090012345678910 Stroke adjustmentl/hr2bar5 bar10 bar2 bar5 bar10 bar2 bar5 bar10 bar2 bar5 bar10 bar2 bar5 bar10 bar2 bar5 bar10 barE/DX 110020406080100120140012345678910 Stroke adjustmentl/hrE/DX 150/156020406080100120140160180200012345 678910 Stroke adjustmentl/hr2 barE/DX 200050100150200250300012345678910 Stroke adjustmentl/hrE/DX 260050100150200250300350400012345678910 Stroke adjustmentl/hrE/DX

6 3000501001502002503003504004505000123456 78910 Stroke adjustmentl/hrE/DX 3800501001502002503003504004505000123456 78910 Stroke adjustmentl/hr1 bar3 bar4 bar2 bar1 bar5 bar1 bar5 bar10 bar1 bar5 bar10bar1 bar4 bar8 bar1 bar3 bar6 bar0204060801001201401601802002202400123 45678910 Stroke adjustment1 bar10 bar5 barl/hrE/DX 160 Product Information Motor-driven Diaphragm Dosing Pumps MEMDOS E/DXLutz-Jesco Box 10 01 6430891 WedemarkPhone: +49 5130 5802-0 Fax: +49 5130 580268E-mail: :+49 5130 580280PI-10402-02-V04 | Copyright by Lutz-Jesco GmbHSubject to technical changesAccessoriesEven the best Dosing pump is capable of improvement - by means of appropriate technical surroundings. That is why a particularly compre-hensive accessories programme is available which turns your Dosing pump into an efficient Dosing system.

7 As an option, the multifunctional valve PENTABLOC is available, which offers the functionalities of a back-pressure valve as well as those of a safety blowdown valve. Such functions as anti-siphon, pressure relief and flow indication and monitoring are also further accessories for your Dosing pump, please refer to our Dosing pump brochure. Dimensions907531C O9130~ 376B97183270~ 80~ 107 LAL(ATEX with ATEX motorE 46922632DX 48622-E ,5320approx. 46922632DX ,5320approx. 48622-To optimise the Dosing process, we recommend back-pressure and pressure-relief valves. They are used to increase the Dosing accuracy in the pres-ence of fluctuating back pressures. for long Dosing lines in order to prevent excess delivery. (The accelerated medium continues moving on account of its own inertia even when the delivery stroke has already ended.))

8 To prevent siphoning through the Dosing pump if the suc-tion pressure is higher than the system pressure. to prevent the system pressure from rising to an impermis-sibly high level on the discharge side of the Dosing pump; this may for example be caused by the accidental closing of valves while the pump is in operation or a clogged metering pump MEMDOS MRMB 1 05 02 / 1 GeneralDiaphragm metering Pumps of the MEMDOS MR serieshave been developed for a broad range of applicationsin metering technology. Thus they are used in theindustrial sector, in process engineering and veryfrequently in water and waste water metering Pumps are versions are metering Pumps with the headlocated on the left-hand (Symbol)Upon request, metering Pumps with the head on theright-hand side can be ( Symbol)Duplex metering Pumps are available with the headcombinations shown in the following tables.

9 The headsare arranged in (Symbol)The power of the motor is the same for simplex andduplex metering Pumps because the diaphragmsoperate in a push-pull HeadThe heads are available in polypropylene and stainlesssteel. Special materials upon and discharge valves are double-ball valves upto the MR 290 version; for the bigger Pumps , spring-loaded flat-seat valves are used. For viscous media of400 mPas and more, spring-loaded single-ball valvesare recommended for the suction and the discharge opening pressure of the valve is about chamberThe Diaphragm flanges have been designed so that, inthe case of a Diaphragm rupture due to wear, no chemicalcan escape randomly from the pump or enter the leakage is routed downwards through a drain Diaphragm flanges thus function as a separatingchamber and are protected against aggressive mediaby means of powdery epoxy coating.

10 The escapingleakage can be detected by a leakage probe causingthe pump to be stopped(see MB 1 31 01).DriveThe drive unit consists of an oil-filled worm gear. Thestroke is generated by an eccentric which moves backand forth a spring-loaded plunger fixed to the metering stroke is achieved by the pushing force ofthe eccentric, the resetting of the spring causes thesuction stroke. The stroke length is set by limiting theplunger return by means of a manually adjustableeccentric disk used as a plateDrive eccentricDrive eccentriccontinues to run freelyuntil the plunger plate isreached limitingeccentricReturn springfor suctionstrokeThe stroke length which determines the meteringcapacity can be adjusted manually during operationbetween 0 and 100 %.