TLC Controls has more than 40 Years experience in building Control Systems that serve many Industries. The below listings provide a general overview of major control application categories. Many of these Applications are cross industry covering municipalities, HVAC and Industrial markets. Choose a typical Application from our Application List and gain additional information relative to the Manufactures and Components Including; integrating the latest technologies using, Programmable Logic Controllers (PLC's), Variable Frequency Drives (VFD's) and Wireless Software as a Service (SAS), all using the extensive expertise that TLC brings to your requirement.
Aeration Blower Controls
Aeration Blowers are primarily used in wastewater and food processing plants to introduce and manage oxygen. It is also the largest consumer of plant energy. A complete system usually consists of individual controllers for each blower with a master controller to integrate the individual process control and blower control panels. Other specialized controllers are provided to meet specific process needs, such as controlling a group of aeration tanks to maintain dissolved oxygen concentration. Systems can include airflow transmitters, bearing vibration and temperature sensors, analytic instruments, control valves, and VFDs.
Bubbler Level Systems
A bubbler system is an effective way to measure fluid levels by converting back pressure to fluid level. These systems are used in harsh environments like sewers, wet wells, reservoirs, and drain sumps. A minimum bubbler level system consists of compressed air, an airflow restrictor, sensing tube, pressure transmitter and a control system for overall operation.
Compressor controls operate one or more air compressors to maintain receiver tank air pressure, or if a compressor fails or cannot maintain pressure, a second air compressor is called to operate. TLC has provided compressor controls that service up to six compressors including automation and failure backup.
Grit Removal Systems
The head work of most sewage treatment plants requires equipment to remove sand, gravel, coffee, seeds, etc. from the raw sewage. TLC systems can operate coarse and fine screens as required based upon diffuser levels across the screen in an automated fashion. The systems can also include septage handling, odor control and flow equalization. Grid removal systems assist in preventing mechanical wear and increased maintenance on wastewater treatment equipment.
Medium Voltage Motor Starters
In addition to standard low voltage controls (less than 1000 volt) TLC can also provide medium voltage motor starters rated up to 5000 volts. These starters are typically used for larger deep well submersible pumps rated 200 horsepower and above where power leads can exceed several hundred feet in length. Increasing the voltage to 2400 volts drastically reduces the wire size needed to feed these pumps. Reducing wire size intern lowers suspended weight of the wire as well as its cost.
Programmable Logic Controllers are today's standard in most water and wastewater plants. Very sophisticated logic can be performed using PLCs and changes in sequence do not require rewiring the control panel. TLC is happy to quote and integrate ANY PLC specified to complete a working system. Please see the PLC article in the Technology dropdown
SCADA (supervisory control and data acquisition) refers to computer systems that monitor and control industrial, infrastructural, or facility-based processes. Any Industrial or Infrastructural process can use and integrate the benefits of dynamic and historical operational control. Typical use is fresh and wastewater, manufacturing and HVAC, in continuous, batch, repetitive, or discrete modes.
Solar Collector Array Control
When the sun shines all is good. Controls turn on a solar pump whenever solar energy is available and turn the pump off when sufficient solar energy is no longer available (a rainy day). This operation is an on/off control between the collector and storage tanks. Large operations have many more requirements such as charge regulation, battery backup and alarms.
Alarm Systems come in many variations from a simple alarm horn or light to full panel stand-alone systems. TLC incorporates audiovisual system panels using web based, cellular, telephone auto-dialing and video monitoring technologies. Capabilities include power failures, temp extremes, humidity, water incursion, sounds, burglar/smoke, listening and many other captured events.
Clarification is the oldest and most widely used operation in the effective treatment of wastewater. The operation consists of removing sediment, turbidity and floating material from raw wastewater by scraping the top, adding water while forcing sediment to the bottom for additional processing. Clarifier controls monitor the force required to rotate the scraping mechanism and shut down the system when torque is exceeded, preventing mechanical failure to the motor, gears or drive shaft.
Condensate return is one of the processes within a Boiler and Heating system controlling water level, temperature and pressure. Steam Condensate is formed when steam transfers heat to a liquid. Steam condensate is collected in condensate tanks and returned to the boiler. TLC will monitor tank levels and operate condensate return pumps and vacuum pumps as required.
Pressure booster pumps are required in high-rise, multistory buildings to boost city pressures in reaching the upper floors. Booster pumps can be cycled on & off via pressure switches and time in simple configurations. More advanced systems use Time Delay Relays and Variable Frequency Drives (VFDs) to maintain constant pressure and save energy costs.
Septage Receiving Systems
"Septage” is the liquid and solid material pumped from a septic tank, cesspool, other primary municipal or private source. Septic is routinely transported to a Waste Water Treatment Plant for processing. TLC systems are used at wastewater treatment plants to monitor and record the volume of septage it receives so the septage received can be "billed" accordingly.
TLC prides itself in solving unique control issues. TLC has the staff and expertise to provide a control solution to any Industrial, Manufacturing, Process, HVAC or new Applications - Please contact TLC to discuss your application needs. TLC will be in the forefront of these advances - Give us a problem and we will help you solve it.
Boiler & Heating Controls
Boiler & heating control systems can provide new and revised sequences to operating and sharing heater boilers with domestic hot water systems. Boiler Control Systems monitor demand and switch pumps, boilers and heat exchanger values as necessary to direct the energy properties of the boilers to the process requiring heat.
Cooling towers are used to remove heat from process water or chillers using a combination of fans and pumps. Water is pumped from a reservoir to the tower where fans are used to remove the heat. The fans can run at constant or variable speeds for consistent temperature control while providing energy savings.
High concentrations of certain gases can be fatal or explosive. When the gas detector alarm goes off the building/facility needs to be evacuated and typically ventilated. TLC controls can turn on intake and exhaust fans along with other plant control processes. Detection within waste water plants is used to notify the facility of chlorine leaks as chlorine is used in sewage, potable water treatment and, stored at the facility in high pressure tanks. Detection is also used within many other Industries to protect lives, communities and the plants own infrastructure, for example; the Steel & Petrochemical industries.
Lift Stations Simples, Duplex, Triplex
By far the most common usage of TLC Control Panels is to lift sewage. Lift stations are used for pumping wastewater or sewage from a lower to higher elevation, and where the elevation of the source is not sufficient for gravity flow. Key elements of lift/pump stations include a wastewater receiving well (wetwell), equipped with lift pumps and piping with valves, a junction box, and an equipment control panel with alarm system. TLC systems provide reliable control, from simple sump pumps with fractional HP to Large Municipal wetwells using several hundred HP pumps.
Rain Water Harvesting
The rainwater harvesting / collection is a very old yet new "Green Technology". These systems collect rainwater from a roof or gutters and store it in tanks or an onsite reservoir. The captured water is used for non-potable water applications such as irrigation, cooling systems or simply flushing toilets.
Sludge Conveyor Systems
Sludge conveyor control panels operate lifting, horizontal and transverse conveyors to lift and transport de-watered sludge to sludge hoppers, haulers or solar drying beds. Our PLC based controls fill the hoppers evenly from front to back using pneumatic gates and ultrasonic level transducers. Operators use the HMI touch screen to select hopper / hauler truck size, level to fill to and which bay truck is located. Operator can also select "solar" and the sludge will be conveyed to the drying beds where dried by the sun's rays.
Wetwell Level Controls
Wet-well level controls are most often associated with lift stations, managing the wet-well volume limits along with the pump operational capabilities. Both are needed for minimum operation. TLC can provide control for wet-well level (containers) while also integrating more functionality like alarms within a single control saving investment and monitoring operations for the most efficient operation.