Linn-Catalogue 2019-2020

We have developed a further extension to our Aqua-Control system for quick and easy use in fish farms. The basic concept for this compact sys- tem is to supply a complete pre-wired unit that can be brought into operation in fish farms with little installation and wi- ring effort. Aqua-Control Compact is a unit for controlling and monitoring up to four oxygen supply systems. It consists of the following components: Control boxwith PLCmodule The plastic switch box is completely pre-assembled and wired. A PLC dis- play module is visible which constantly displays the actual values of the con- nected oxygen probes. The integrated keypad can be used to set the desired target values of the input systems and, in addition, an alarm threshold. Further- more, the switch box contains a Residu- al Current Device (RCD), the necessary motor protection switches for the con- nected devices as well as the control re- lay for the sockets of the input systems and the solenoid valves of the oxygen supply line. Motor protection and RCDs of the de­ vices are constantly monitored (in addi­ tion to the oxygen value) and, in the event of irregularities, forwarded to an alarm switching device via a potential- free contact. The connection of further signal transmitters (such as float swit- ches, level monitors or temperature probes) can be achieved easily. Five sockets are located on the lower half of the switch box: four controlled sockets for plugging in the input systems and another for flexible use. Also included are four sockets for connecting the oxy- gen probes. Oxygen Flowmeter with SolenoidValves The Aqua-Control Compact unit as stan- dard is equipped with five flow meters (further meters and scale on request). Four of the O2 flow meters are automa- tically opened and closed by solenoid valves (normally closed) according to the inputs on the PLC. The fifth outlet can be used flexibly and is closed manually with a ball valve. Protective housing Both the control box and the oxygen flow meter are housed in a robust and weather-resistant polyethylene protec- tive housing. The housing (dimensions 120 x 78 x 40 cm) was developed by us specifically for this system. Aqua-Control Compact can be easily mounted and screwed onto a base or foundation with this housing. Recesses for inserting the supply cables are incorporated in the housing. Aqua Control compact is designed for rapid application. Only the power supply line, the oxygen supply line and a control line (if the system is to be connected to an alarm centre or a PC) are to be connected on site. All other wiring is already in place. All you need to do is plug in your input systems and the oxygen probes! The most convenient solution is to com- bine Aqua-Control Compact with a com- puter. By means of a 2-wire USB line, the PC enables a central setting of all pre-sets and alarm values. The actual values can be displayed in your personal pond view. It is also possible to record the O2 satura­ tions over any length of time. complete unit in protective housing version with transmitters for oxygen probes detail switch box detail PLC module in switch box Aqua-Control Kompakt Control Systems 60 LINN