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| Above ground wastewater actuator controls. |
A wastewater treatment plant installed six new AUMA SAR electric actuators for modulating duty to control the dosing of chemical additives. These actuators are used for modulating duty to handle the high-precision dosing of short-chain fatty acids, used to support the growth of microorganisms and help to remove phosphorus from the wastewater.
The actuators are situated below ground, with their AC actuator control systems mounted above the ground. This is done for both for both safety and convenience. This arrangement is made easy thanks to the modular design of AUMA actuators. AUMA actuator controls can be mounted up to 325 feet from the actual actuator (motor and gearbox).
When workers have to access equipment underground, it requires special safety needs and procedures. These include the use of qualified personnel and gas detection tests to ensure sufficient oxygen as well as to rule out flammable of explosive potentials. Locating the actuator controls above ground level, in combination with non-intrusive actuator versions, reduces underground work to a minimum, thus helping to save time and cost.
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| Below ground motors and gearboxes. |
The split-level installation also provides diagnostic and local control from a more comfortable position. The graphical interface and all operational, data logging and diagnostic features provided by the intelligent AC actuator controls are easily accessible. These actuators also use Profibus DP-V1 to communicate with the plant’s main distributed control system. Local AUMA Service took care of installation and commissioning on site.
For more information, contact Instrument Specialties, Inc. by calling 407-324-7800 or visit their web site at http://isi.group.
