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New benchmark in pump metering
12
Product Focus
WORLD PUMPS
October 2014
New benchmark in pump metering Environmentally aware, energy efficient and safety conscious is the new generation of motor driven metering pumps. These aspects are highlighted by the specific design features of the exhibits. A redesigned product range of motor-driven metering pumps set new completely new benchmarks. Safety, efficiency and environmental protection are not only options – it is a feature of the standard equipment.
T
he entire range of motordriven diaphragm metering pumps, control type, has been thoroughly renewed and provided with additional intelligent features, which provide a high level of operating comfort, safety and efficiency. All Sigma control type pumps are now equipped as
standard with a removable operation unit, an automatic excess pressure off switch and multilayer safety membrane.
High operating comfort The mobile operating unit provides additional ease of use for practical applications. Consequently the pump can be incorporated quickly and easily in each specific application.
Energy saving of more than 15% Figure 1. In normal operating mode the time behaviour for the suction stroke and the discharge stroke is similar.
Figure 2. In the mode with optimised discharge stroke the discharge stroke is lengthened while the suction stroke is executed as quickly as possible. This setting is useful for applications that require optimum mixing behaviour and optimised chemical mixing.
Figure 3. In the mode with the optimised suction stroke the suction stroke is carried out as slowly as possible. This permits precise and trouble-free metering of viscous and gaseous media.
www.worldpumps.com
The embedded microprocessor control of the redesigned motordriven metering pump is an optimum combination of speed control and stop & go operation, i.e. it works in a wide control field with customised fine adjustment. For the first time the pump control can record any motion and speed profiles in combination with the power demand. This takes place via integrated software that controls the motor electronically. It identifies the power demand and controls the power feed according to the specific requirements of the desired application. The task of the control is to measure the movement and speed profile in conjunction with the power demand. This leads to a real reduction in the actually required power, which means an increase in efficiency. In total there is an energy saving of over 15% at full load compared
Sigma motor-driven diaphragm metering pumps, control type S1Cb.
to conventional pump controls, at half and 2/3 loading the saving is even as much as 30%.
Optimum metering results Moreover the control enables an optimum metering result thanks to the metering behaviour of the metering pump being matched to the chemicals or application. The pump metering behavior will be tuned according to the existing specialties. With the new product range, the speeds of the drives
can be varied. This permits intelligent movement control, which saves energy and optimally supports every application. The stroke is executed according to the desired metering profile. Thus for example, with a shorter suction stroke and longer discharge stroke, the medium is discharged more uniformly or the metering of highly viscous media can be adjusted to by use of a long suction stroke and a short discharge stroke. A further feature:
WORLD PUMPS
Product Focus October 2014
the pumps can be linked to a higher-level control, but can also operate as an independent stand-alone solution.
for applications that require optimum mixing behaviour and optimised chemical mixing.
Optimised suction stroke Metering profiles The pump can be operated in normal mode (Figure 1), with optimised discharge stroke (Figure 2) or with optimised suction stroke (Figure 3). Three typical metering profiles are shown schematically with the behaviour over time.
In the mode with the optimised suction stroke (Figure 3), the suction stroke is carried out as slowly as possible, which permits precise and trouble-free metering of viscous and gaseous media. This setting should also be chosen to minimise the NPSH value.
Normal Operation
Safety as standard
In normal operating mode the time behaviour for the suction stroke and the discharge stroke is similar (Figure 1).
An example of this is provided by a Heidelberg-based manufacturer’s motorized metering pump series, which comes with the described multiple layer safety diaphragm and integrated diaphragm signaling as standard equipment. This concept guarantees reliable metering – even in the event of critical operating states. Consequently it is possible to react to damage at an early stage, without the need for interrupting the process and the system can
Optimised discharge stroke In the mode with optimised discharge stroke (Figure 2) the discharge stroke is lengthened while the suction stroke is executed as quickly as possible. This setting is, for example, useful
continue metering until there is a suitable opportunity to exchange. Even the motor-driven sigma pumps are equipped with a multiple layer safety diaphragm and integrated diaphragm signaling as standard equipment. The diaphragm is coated on both sides with PTFE film. This coating ensures that no leakage to the outside occurs even if the diaphragm ruptures. If the diaphragm ruptures, feed chemical enters between the diaphragm layers and thus triggers a mechanical indication or an alarm via the sensor area. The structural design of the safety diaphragm ensures that feed chemicals remain in the dosing head, even in the event of diaphragm rupture, and leakage into the environment is completely avoided. In addition, the optical display is standard. In the event of a fault message, the user can react promptly to any damage. Even greater convenience is offered by the diaphragm failure indicator on
the control version of a motor pump. In this case, a diaphragm failure is indicated by the illumination of a red LED as well as an error message shown on the LCD screen. Depending on the setting, the pump either stops or continues to meter with a simultaneous alarm message. This concept ensures reliable metering - even under critical operating conditions.
Summary Modern metering pumps ensure high operational reliability thanks to their hermetic leak-tightness. Their simple, but extremely reliable mode of operation enables plant efficiency to be increased, service intervals to be lengthened and energy requirements to be reduced to a minimum. A precise and requirements-controlled dosing system serves to reduce the consumption of chemicals to a minimum. www.prominent.com
www.worldpumps.com
13
Product Focus
WORLD PUMPS
October 2014
New benchmark in pump metering Environmentally aware, energy efficient and safety conscious is the new generation of motor driven metering pumps. These aspects are highlighted by the specific design features of the exhibits. A redesigned product range of motor-driven metering pumps set new completely new benchmarks. Safety, efficiency and environmental protection are not only options – it is a feature of the standard equipment.
T
he entire range of motordriven diaphragm metering pumps, control type, has been thoroughly renewed and provided with additional intelligent features, which provide a high level of operating comfort, safety and efficiency. All Sigma control type pumps are now equipped as
standard with a removable operation unit, an automatic excess pressure off switch and multilayer safety membrane.
High operating comfort The mobile operating unit provides additional ease of use for practical applications. Consequently the pump can be incorporated quickly and easily in each specific application.
Energy saving of more than 15% Figure 1. In normal operating mode the time behaviour for the suction stroke and the discharge stroke is similar.
Figure 2. In the mode with optimised discharge stroke the discharge stroke is lengthened while the suction stroke is executed as quickly as possible. This setting is useful for applications that require optimum mixing behaviour and optimised chemical mixing.
Figure 3. In the mode with the optimised suction stroke the suction stroke is carried out as slowly as possible. This permits precise and trouble-free metering of viscous and gaseous media.
www.worldpumps.com
The embedded microprocessor control of the redesigned motordriven metering pump is an optimum combination of speed control and stop & go operation, i.e. it works in a wide control field with customised fine adjustment. For the first time the pump control can record any motion and speed profiles in combination with the power demand. This takes place via integrated software that controls the motor electronically. It identifies the power demand and controls the power feed according to the specific requirements of the desired application. The task of the control is to measure the movement and speed profile in conjunction with the power demand. This leads to a real reduction in the actually required power, which means an increase in efficiency. In total there is an energy saving of over 15% at full load compared
Sigma motor-driven diaphragm metering pumps, control type S1Cb.
to conventional pump controls, at half and 2/3 loading the saving is even as much as 30%.
Optimum metering results Moreover the control enables an optimum metering result thanks to the metering behaviour of the metering pump being matched to the chemicals or application. The pump metering behavior will be tuned according to the existing specialties. With the new product range, the speeds of the drives
can be varied. This permits intelligent movement control, which saves energy and optimally supports every application. The stroke is executed according to the desired metering profile. Thus for example, with a shorter suction stroke and longer discharge stroke, the medium is discharged more uniformly or the metering of highly viscous media can be adjusted to by use of a long suction stroke and a short discharge stroke. A further feature:
WORLD PUMPS
Product Focus October 2014
the pumps can be linked to a higher-level control, but can also operate as an independent stand-alone solution.
for applications that require optimum mixing behaviour and optimised chemical mixing.
Optimised suction stroke Metering profiles The pump can be operated in normal mode (Figure 1), with optimised discharge stroke (Figure 2) or with optimised suction stroke (Figure 3). Three typical metering profiles are shown schematically with the behaviour over time.
In the mode with the optimised suction stroke (Figure 3), the suction stroke is carried out as slowly as possible, which permits precise and trouble-free metering of viscous and gaseous media. This setting should also be chosen to minimise the NPSH value.
Normal Operation
Safety as standard
In normal operating mode the time behaviour for the suction stroke and the discharge stroke is similar (Figure 1).
An example of this is provided by a Heidelberg-based manufacturer’s motorized metering pump series, which comes with the described multiple layer safety diaphragm and integrated diaphragm signaling as standard equipment. This concept guarantees reliable metering – even in the event of critical operating states. Consequently it is possible to react to damage at an early stage, without the need for interrupting the process and the system can
Optimised discharge stroke In the mode with optimised discharge stroke (Figure 2) the discharge stroke is lengthened while the suction stroke is executed as quickly as possible. This setting is, for example, useful
continue metering until there is a suitable opportunity to exchange. Even the motor-driven sigma pumps are equipped with a multiple layer safety diaphragm and integrated diaphragm signaling as standard equipment. The diaphragm is coated on both sides with PTFE film. This coating ensures that no leakage to the outside occurs even if the diaphragm ruptures. If the diaphragm ruptures, feed chemical enters between the diaphragm layers and thus triggers a mechanical indication or an alarm via the sensor area. The structural design of the safety diaphragm ensures that feed chemicals remain in the dosing head, even in the event of diaphragm rupture, and leakage into the environment is completely avoided. In addition, the optical display is standard. In the event of a fault message, the user can react promptly to any damage. Even greater convenience is offered by the diaphragm failure indicator on
the control version of a motor pump. In this case, a diaphragm failure is indicated by the illumination of a red LED as well as an error message shown on the LCD screen. Depending on the setting, the pump either stops or continues to meter with a simultaneous alarm message. This concept ensures reliable metering - even under critical operating conditions.
Summary Modern metering pumps ensure high operational reliability thanks to their hermetic leak-tightness. Their simple, but extremely reliable mode of operation enables plant efficiency to be increased, service intervals to be lengthened and energy requirements to be reduced to a minimum. A precise and requirements-controlled dosing system serves to reduce the consumption of chemicals to a minimum. www.prominent.com
www.worldpumps.com
13