Metering Pumps

Functioning

Metering Pumps (oscillating positive displacement pumps) suck in a defined fluid volume with the back-stroke of the displacer and press it into the dosing line with the pressure stroke. The metering capacity can be regulated by adjusting the stroke volume and the dosing strokes per time unit. Thus, a constantly exact dosing dosing is achieved remaining constant even at varying counter-pressures.

Micro Processor Technology

Already in 1968 ProMinent presented one of the first electronically operated solenoid driven dosing pumps. Meanwhile, micro processor technology is used on a large scale for the control of our dosing pumps - optimally adjusted to each application area. Besides multi functional control methods micro processor technology grants increased operation safety. This is ensured by multiple monitoring functions. Thus, for instance, the use of chemicals in water treatment can be reduced to the absolutely necessary minimum - an important aspect for environmental protection. The same is applicable for the areas of process technology.

The integration of a dosing pump into a fully automatic work process absolutely requires interfaces for the processing of existent control signals. Only the use of most modern micro processor technologies allows to use all standard signals, e.g. contact and analogue signals for pump control without any additional signal processing or transforming devices.

Two-Year-Guarantee for Reliable Technology

Meanwhile, more than one million ProMinent metering pumps are used in the whole world - always successfully even under most difficult conditions. Taking proven construction principles as a basis we have levelled off on a very high quality and precision standard. This allows us to grant a two-year guarantee on each ProMinent® metering pump (pump drive).

Large Product Range

The series offered comprise electronically operated solenoid driven dosing pumps up to electronically operated motor dosing pumps as well as pneumatically operated dosing pumps. The capacity range starts at some few ml e.g. for laboratories and goes up to 40 000 l/h for the use in process industries. There are different technologies to feed the dosing medium. According to the feeding-technology used, metering pumps can be categorized as follows:

• Mechanically actuated diaphragm metering pumps
• Hydraulically actuated metering pumps
• Plunger metering pumps
• Peristaltic pumps

Another way of categorizing metering pumps is according to the pump drive:

• Solenoid-driven metering pumps
• Motor-driven metering pumps
• Air operated metering pumps