Mnemosyne family

Features for all the kid members of the Mnemosyne family

The Mnemosyne family of integrated LASER guided Single-Use-Pump’s all consist of two parts:

the re-usable Drive Unit containing sensors, electronics, pinch valves, communication and 1, 2 or 4 of the driving diaphragms (cardiac muscle)
one or more single-use, disposable wetted parts consisting of a dome to which both the elastic diaphragm and the fluid conveying hoses are attached and supplied pre-sterilized in dual film bags.

Integrated products, model names	Erato	Urania	Polyhymnia
Layout, number of diaphragms	single	dual	quadruple
Diaphragm diameter, mm	100	150	100
Stroke Volume (SV) mL 100% stroke	1 x 100	2 x 200	4 x 100
Pump capacity, CO range, mL/min	3,000	8,000	12,000
Hose connection, ID/OD mm	6/10	8/12	12/18

CO = Cardiac Output = (CO = BpM x SV), CO max variation = 1:1.000

No expensive housing materials in order to reach traditional steam cleaning requirements
No mechanical or liquid seals to an axle or other mechanical parts
No ball valves, but controlled hose valves / pinch valves easy to clean
No pumped media contact to pump body parts – contamination not possible
Low weight and compact design gives OEM manufactures freedom to design equipment
Able to controlled pump any fluid, liquid independent of reasonable inlet and outlet pressure
Able to measure accurately the pumped volume, a true Positive Displacement pump – no in-line flow-sensor is needed
The smallest Calliope designed into the stackable Hephaestus Stainless Steel cabinets
All pumps offer infinite turn-down, turn-up scale
No rotating parts such as electrical motor, coupling or gearing

Max volume per stroke depending on pump size, no minimum volume exist
Zero spallation / shedding of membrane materials as no shear is introduced between used polymeric materials
Self-priming and able to run dry for extended periods with constant and controlled pulse
Self-emptying, drain on inlet and purge on outlet as the pump will convey gas as well
Less air used for performing the job of transferring the fluid
Single-use, disposable wetted parts eliminate cleaning issues – just un-pack and exchange with new sterile membranes
Low cost disposable membrane inserts eliminates ALL cleaning issues
Choose from various membrane materials according to needs
Use 3^rd and/or 4^th active membranes in Polyhymnia as pulse damper or obtain even higher fluid transfer
Polyhymnia integrate 4 diaphragm houses able to operate combined or independent and hereby useful for concentrate mixing of 4 different fluids with just one pump
Very gently operation with no rotating as no shear is introduced between used polymeric materials parts applying shear stresses to the pumped product
Working pressure as much as 5 Bar makes the pump suitable for connection with filtration devices
Two or more independent pumps able to operate fully controlled in parallel

Choose one pulse/stroke per day or one pulse per second or any set of pulses in between
Choose any stroke length
Choose any fraction of a pulse again and again
Any imaginable operation sequence, cycle for each diaphragm (pulse ramp, pulse train, pulse length, pulse pause, stroke start, stroke length, stroke distance)
As fully electronically controlled and each with a unique identification each pump is easy to upgrade
Choose the fluid pressure you want to create – 5-6 Bar (depending on supply air pressure)
Choose the volume you want to pump – (well, according to pump size)
Real-time information about pumped volume from each individually diaphragm
Data logging, data acquisition for each membrane used
Pump operation based selectively on constant pressure, constant mass flow, desired volume
Two or more pump may work together in order to obtain capacity or pulse control

No lubrication needed
No need for strip down pump for cleaning
Controlled hose valves not part of single-use membrane assembly (wetted parts)
Longevity - diaphragm tested to last + 6 month at full stroke length and pulse speed

Single-Use-Pump parts may be part of an all sterile process package
No serious tooling needed for Single-Use-Pump part replacement – well, a scissor and a wrench

On-line operation pressure from build-in sensor
On-line Mass-Flow-Control / metering, the pump measures the volume pumped accurately without external flow sensors