Operating The DigiQ II

So, how does The DigiQ II perform in operation? Well, probably the most important thing you want to know is how well does it control the temperature of the cooker. We did a test in which we allowed The DigiQ II to control a large Big Green Egg cooker at 225, 350 and 450 degrees. We watched The DigiQ II bring the cooker up to temperature to see how far it overshot the target temperature. After the cooker settled down from the initial overshoot, we watched the temperature of the cooker through many cycles to see how big of a "swing" there was between the low and high temperatures that The DigiQ II permitted. And finally, we observed the "central" temperature that DigiQ II was able to maintain. Here's the results:

Target Temperature	Initial Overshoot	Temperature Maintained	Temperature Swing
225	262	229	±4.5
350	354	353	±0.5
435	439	438	±0.5

So The DigiQ II controls the temperature very nicely and keeps better control of the temperature than any kitchen oven. However, a note about temperature control at the low end of the scale. Temperature control is harder at lower temperatures and the ability of any temperature controller to hold a steady temperature at lower cooking temperatures will depend on a number of factors. Things such as how airtight your cooker is, how well insulated it is, the outside temperature, etc. will affect the temperature swing you see. The DigiQ II may start out with a large swing around the target temperature, but depending on these types of factors, it should settle down to very close to the target temperature.

Note: The large overshoot on the 225 degree test is most likely our fault. Also we didn't have time to let the unit stabilize. We will be re-running this test in a few weeks with tighter control and a more air-tight cooker (that's a long story) to get a better idea on the DigiQ II's low-temperature performance.

A few things we'll point out about using The DigiQ II:

• We noticed something unusual, and we bet you will too if we don't tell you about it. But we'll tell you about it and save you the trouble. When the cooker is rising towards the target temperature, it will probably rise in 1- or 2-degree increments. When the cooker gets close to your target, you may notice that it jumps by 3 degrees. This is a feature called "Snap" which "snaps" the readout to the target temperature if the reading from the cooker is within three degrees of the target. This is to eliminate having the readout going back and forth by 1 or 2 degrees when the cooker is stable. If the cooker is within 3 degrees of the target the unit will display the target temperature. You probably don't need to care about this, but certain anal types like us notice these things and ask why.

• While the DigiQ II is not 100% waterproof, it IS water resistant. For our money, we always place the system unit in a large zip-top bag when it rains.

• When you are done cooking, it is best to either remove the blower or close the damper to prevent moisture condensation from getting into the blower.

• A frequently asked question is whether or not you should leave the blower installed all the time and if so, how do you control air flow when you aren't using the DigiQ II. The blower and door adapter pop in and out and there is really no reason to leave the blower installed. Just pop the adapter in when you want to use the DigiQ II and then remove it when you are done.

• Placement of the pit probe can be important. You want it located near the meat so that the DigiQ II is controlling the temperature at the location of the meat, not somewhere else. However, the probe must not touch the meat and should be at least an inch or two from the meat. If the meat influences the temperature of the probe (especially when the meat is first placed in the cooker and is cold), obviously the DigiQ II will be sensing a false pit temperature and then will compensate. The BBQ Guru folks have an accessory to help you with this called a Probe Tree:

  The BBQ Guru Probe Tree

  
  

  You simply insert the wedge between two of the bars on your grid, and then you can attach the pit probe as appropriate. In fact, as you can see, you could if you wish attach several probes at several heights above the grid.

Open Lid Detect Feature

We have saved our favorite for last. As if all the features on the DigiQ II weren't enough, there's this one. Open Lid Detect! This is killer. People have been proposing solutions for the problem of controllers operating the blower when you open the lid on various forums. Most of the solutions involve either a tilting mercury switch or some sort of actual switch to detect that the lid is open. The DigiQ II has solved the problem algorithmically with no additional hardware.

We have played around with this a little bit and so far this is indeed killer. With the older Competitor or ProCom4, when you opened the lid, the temperature of the cooker dropped and the blower started blowing non-stop. Ash might start blowing around the cooker and of course, the charcoal started burning hotter and hotter. By time you closed the lid, the temperature would be climbing and you would end up with a cooker that was a lot hotter than you intended. You quickly learned to disconnect the fan before you opened the cooker, and after you closed the lid you waited until the cooker had nearly recovered its temperature before you plugged the fan back in.

Those days are gone. For the purpose of testing this new feature, we had a stable cooker at 357-358 degrees when we opened the lid for about 30 seconds to simulate flipping some steaks or rotating a chicken or whatever. While the lid was open, the blower did NOT operate. Hooray! That's half the battle. But then we closed the lid to see what happened.

The temperature dropped to 307 while we had the lid open. When the lid was closed, the blower gave short single bursts at 308, 310 and 311 degrees. As the cooker started heating up, the blower gave more single quick bursts at 329, 333, 342, 344, 347 and 355 degrees. The cooker topped out at 364 (only 6 degrees above our set point) and then settled back to 357. Contrast this with the previous models which would have turned the blower on as soon as we opened the lid, and kept it on solid until the cooker reached the set point again.

Open Lid Detect works essentially by detecting sharp temperature changes and refrains from operating the blower during these changes. The only thing you need to be aware of is that if you leave the lid open for a long period of time, the temperature of the cooker may stabilize at a low low temperature. The DigiQ II will sense that the temperature has stabilized and will then operate the blower again. So you don't want to leave the lid open forever. Open the lid to get your business done and then close it.

Summary

The BBQ Guru Competitor was the first major electronic temperature controller for outdoor cookers. Then came the ProCom4 from BBQ Guru, the first wireless electronic temperature controller for outdoor cookers. Now, we have another first with the DigiQ II: Open Lid Detection. With numerous other improvements in the packaging, controls, and operation, the DigiII Q is going to be another great product from The BBQ Guru. We are sure that the DigiQ II will take its place beside the Competitor and the ProCom4 and deliver long, reliable service controlling outdoor cookers. Add to this the already-proven outstanding service provided by BBQ Guru and we feel this product is a definite winner, and as before, we have no hesitation in recommending this product to you.

Contact Information

The BBQ Guru
353 Ivyland Road
Warminster, PA 18974

215-674-9992
800-288-GURU (4878)

www.thebbqguru.com