When I complete a brew session I save the data by clicking on 'File - Save Measurement Data' on the Main Form . The data is saved as comma delimited ASCII. You can open it with any spreadsheet and plot the data as I have above.

From the graph you can see that the mash is up to temperature (160 degrees) at 8:15 AM and the boiler is at 212 degrees. The liquor is at 168 about an hour later (9:15). I set the sequencer to start the process so that I could mash-in at 8:20. Too bad it didn't wake me up on time! The large dip at 9:05 on the mash (pink) trace shows when I actually mashed-in. Why such a large dip?

Referring to the system diagram you'll notice that the mash temperature sensor is located at the inlet to the mash tun manifold. Therefore the sensor temperature returns to room temperature whenever flow through the manifold ceases. Keeping this in mind you can easily determine from the mash graph when mash-in, mash-out, initial run-off, sparge and final run-off takes place.

Lets look at the Graph:

08:15 - mash water reaches 160 degrees, it's ready for the grist. boiler temperature raised to boiling

09:00 - pump off, mash heat off, lid removed, 22 pounds of grain added. boiler is boiling, ball valve is opened letting hot water flow to sanitize counter flow chiller

09:05 - grist doughed in, lid replaced, pump on, heat on

10:20 - mash out begins, temperature raised to 168 degrees. any remaining water in the boiler is dumped

10:40 - run off to the boiler begins. large dip in mash trace. boiler temperature increases reflecting temperature of wort from the mash tun

11:07 - grain bed has settled, sparge begins. as sparge liquor flows into the manifold mash trace follows liquor temperature. wort in boiler simmers at 185 degrees

12:00 - boiler temperature set to boil.

12:15 - sparge stopped

12:30 - run off to boiler complete. wort just begins to boil

14:00 - wort boil complete