Aquarium Room System Guide After Changes:
Conductivity set at 52 mS. High control range is 52.3mS. Dose time 20s, wait time 2 minutes.
Conductivity probes for System A (left) and System B (middle). When these need to be calibrated, they can be taken off by first stopping the water flow through them with the black wheel (right). Next you unplug the black wire with an orange head from the probes. Then you unscrew them from the base of the yellow piece. The yellow piece will screw apart around the middle, this is not what you want to unscrew. On system B, to unscrew it, you have to undo the clip on the pvc, and pull it away from the rack. Once the Yellow piece is separate, you turn the very top of the yellow piece a quarter turn, then pull off the top. You are left seeing a circuit board. On the circuit board is a black button. To calibrate it, you stick the probe in a solution on a known and standard conductivity (usually 50000µS). Let the probe sit for a minute so that it settles down its reading. Then you press and hold the black button on the circuit board. If the red led. at the base of the button lights up red then turns off it means that the calibration was successful. If it blinks then the calibration was unsuccessful, and must be tried again. After calibrating it, you reassemble it and restart the flow to the probes. If the probes are now giving too low of a reading, you may have to lightly hit them to free any bubbles that are stuck to the probe.
To help prevent failures, there are now two automatic solenoid valves in series (left). To test if either of them have failed open you have to first find the hose that goes from the solenoids into the tank. You then turn off one of the solenoids using the computer on the wall (right). Watch the hose to see if any water comes out. If no water comes out then it is working. Repeat the same process for the other solenoid.
The temperature probe is now next to the flow valves on the pipes over all of the tanks. Temperature probe is on the right, flow valve is on the left.
Other Changes:
The computer that controls the system is now hooked up to a program on the “Freya” computer. There are two programs, one that lets you monitor everything in the system remotely and another that pulls all of the saved data from the last day. This includes the value of all of the parameters every fifteen minutes. Also a log of all of the alarms and one other thing…………. NOTE: these programs are not installed specifically on that computer. You can run the executable (.exe) off of whatever device it is saved on. If we want it on another computer, we just have to copy the file.
Using Computer:
This shows what the screen to set the conductivity parameters looks like. There are 3 high and 3 low settings. The first one “high/low Alarm” just sends an email out to everyone on the email list. The second one “Low-Low/High-High Alarm” calls everyone through the sensaphone system. If it reaches the “High/Low Cutoff” then the email and the calls have already been made, so it just shuts the whole system off.
In this screen, the “System Stability Delay” timer keeps track of how long it has been since an alarm went off. If it is within this amount of time since an alarm, then the system won’t do anything (No conductivity dosing or anything else).
The “Flow Alarm Heater/UV Cutoff Delay” timer makes it so that these things wait that amount of time to shut off after a flow alarm is triggered.
NOTE: The water change only controls the system getting rid of water. The water is automatically refilled because the salt water tank is attached to the reservoirs by a small tube. This tube is always pressurized, but when the water level is high enough, a float attached to it blocks the flow. This tube will not be pressurized if the water flowing from the saltwater tanks pump back to the top of the tank is allowed to flow at full speed. It is the restriction of this flow that causes the pressure that pushes the water into the systems reservoirs.