System Modules:
An IVEK system includes three modules. All of the modules are required for a system to function. The modules are as follows:

Controller Module: This module includes custom electronic circuitry in an enclosure IVEK has designed to control our Motor/Base or Actuator Modules. The Controller Module drives a motor and monitors sensors to determine positional information and alarm conditions. The Controller Module can also include an operator interface panel to set parameters and signal alarms. Electronic inputs and outputs are included as appropriate for interfacing with other equipment (for ex.: RS232, PLC signals etc.).

Motor/Base or Actuator Module: The Motor/Base or Actuator Module drives the Pump Module. There are three varieties that correspond to the Pump Module types. The Motor/Base or Actuator Module drives the piston in a linear direction for the intake and discharge functions. Rotary motion is used for the valving function.

Pump Module: The IVEK pump module is a ceramic piston/cylinder set with a housing. The piston/cylinder set is sealed by the fit of the piston into the cylinder (total clearance from 80 millionths of an inch). IVEK pump modules are positive displacement mechanisms that do not contain external valves and can run for hundreds of millions of cycles without measurable wear. (See the 3 types of pump modules in animation here)

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System Types:
There are three types of systems that correspond to the three types of Pump Modules as follows:

Rotary: (See animations here) This type of system uses an offset drive to create simultaneous rotary and linear motion on the piston. Each single 360° rotation of the motor results in an intake and discharge cycle. The stroke length of the piston (displacement) is mechanically adjusted. The rate the piston travels is electronically adjusted through the motor speed. Rotary systems can be configured into single or multiple channel metering or dispensing systems. The flow profile of a single stroke (volume over time) is sinusoidal. The fluid delivery can be in individual strokes or multiple strokes. Stroke selection is a Controller Module setting. Multiple strokes can be delivered up to 1800 per minute (1800 motor RPM). Rotary Motor/Base Modules can be single ended (single shafted motor with one Pump Module) or dual ended (double shafted motor with two Pump Modules – one on each end).

Linear: (See animations here) The 2000 series of Linear Systems use a linear actuator (motor/lead-screw combination) to drive a single two-piece Pump Module. The actuator can either drive the piston in a linear motion for displacement or in a rotary motion to accomplish valving. These systems can be configured into single or multiple channel metering or dispensing systems.

Multiplex: (See animations here) The Multiplex series use a single motor and two lead-screws to drive multiple three-piece pump modules. The motor and lead-screw combination drive the pistons in a linear motion to create displacement. Each Pump Module has an air driven rotary actuator to turn the valve towards the intake or discharge port.

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Control Modes: There are two main types of control modes as follows:

Dispensing: Measured additions of fluid are displaced upon command. Dispensing applications are described as a volume per fill (ex. 0.5ml/package) Examples include:

• Bottle/vial filling
• Silicone dispensing for syringe lubrication
• Blister packs
• Many more

Metering: Continuous additions of liquid over time. Metering applications are described as a flow rate (ex.: ml/min). Examples include:

• Flavor additions in continuous food processing
• pH control for waste water treatment
• Electroplating bath replenishment
• Many more

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Channel Configurations:
IVEK offers both single and multiple channel configurations. A channel refers to a single Motor/Base or Actuator Module driven by a Controller Module. Single Channel systems are often bench-top units. Multiple Channel systems are often integrated into a production application to fill many vessels at once.

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