Co2 c, Uzzy, Ogic – XtremeMac XGC-1e User Manual
Page 6: Ontrol
™ co2 c
Most people who have used the XGC-1e, rate it the best combination controller available today. The fact that the built-in “Fuzzy Logic”
control system has redefined what true Part-Per-Million CO
control is really about, may have something to do with it…
Let’s talk about ... Carbon Dioxide. CO
is present in relatively low quantities, (300-600 PPM) in your normal, generic, everyday air. But
plant growth can be increased and accelerated if the level of CO
is increased to, let’s say... 1000 -1500 PPM. For this reason, the XGC can
distribution for those people who prefer to use supplemental CO
There are some inherent dangers associated with using CO
. Here are some of the rules to remember when using CO
A) Cylinders (bottles) of compressed CO
should never be stored inside the growing area or anywhere else where the temperature may
rise above 100º F.
B) The growing area should not be occupied while CO
is in operation.
C) Do not enter the growing area until the CO
has been exhausted.
is heavier than air and will accumulate towards the ground.
E) In high enough concentrations CO
can kill!!! The OSHA maximum “Personal Exposure Level” is 5000 PPM.
*Note: The XGC CO
control system can be used for both compressed CO
cylinders, and generators. The CO
receptacle is 120vac.
cylinders require an approved regulator / flow gage and a valve.
If optimum CO
“mileage” is desired, a self-contained air conditioner or other “Closed loop” cooling method is highly recommended. A
closed loop system will regulate temperatures within the zone allowing you to extend the CO
maximum cycle time thus reducing CO
Another method of reducing heat build up includes utilizing “Ventilated light hoods”. Just be sure to make the ventilation system of the
hood as airtight as possible so that your precious CO
is not being drawn out of the area by the ventilated hood exhaust fan.
If sufficient CO
is provided and the proper level of nutrients and light is available, a 35% increase in growth rate is possible. However if
you suspect the higher temperatures are adversely affecting the plants, a shorter CO
cycle may produce better results. Remember that
a shorter CO
cycle duration translates to increased CO
Fuzzy Logic is a form of Artificial Intelligence (AI). It is as though a trained operator is there to monitor the level and release more CO
when required. It can also “learn” how to maintain the set point when it is first started by pressing a couple of buttons. It then calculates
how to best maintain the CO
level for any size space… automatically!
Every growing area has variables such as area size, fan types, ambient temperature, unique airflow characteristics, CO
and flow-rate. Ordinary “part-per-million” controllers do not take most of these variables into consideration thus they are not very good
at keeping the CO
at a constant level. A standard set of “parameters” which define how the Fuzzy Logic’s AI (Artificial Intelligence) is
pre-programmed into the XGC-1e. For MOST applications, the standard set will work fine. In fact, most people report the XGC-1e maintains
their desired setpoint +/- 15-25 PPM.
If after a few days of operating the XGC-1e you are not satisfied with the performance, you can try to allow the unit to “re-teach” itself the
base parameters FOR YOUR SPECIFIC AREA. And that is exactly what the “Auto-Tuning” function does. When the “Auto-Tuning” function
is used, the XGC-1e automatically measures your systems performance and calculates the best method to control CO
within the area.
It then uses this information in conjunction with a simple form of Artificial Intelligence called Fuzzy-logic to give you truly exceptional
efficiency. Auto-tuning is only required when using compressed CO
and Fuzzy-logic control mode.
There are ONLY four reasons to perform “Auto-Tuning” and most people will not see any improvement over the factory setpoints.
1) Unsatisfactory performance after operating the unit for a few days.
2) Changing the set point (SV) more than 500 PPM.
3) Major (and some minor) changes in the CO
delivery system, area configuration, fan changes, ECT.
4) Abnormal or inconsistent results from previous Auto-Tunings.
*Note: NEVER perform an Auto-tune when using a CO