As promised, ran a test of the grill level temperatures at various set points and attached the results.
Pellets: BBQer Delight Hickory
Indicator: Watlow 10 channel “J” type indicator, degree F
Probes: “J” type probes
Calibration: Melting Ice (32°F), simmering water (212°F)
All probes were within ±1°F of each other and the indicator was spanned and calibrated with the same criteria. Used three different type commercial food probes to verify readings.
Methodology: Placed probes in the locations as indicated; cycled setpoints, waited for control and then took readings.
Variables noted: Depending on whether the temperature was rising or falling made a difference in the reading. Also, the pellets falling into the fire pot affected the heat distribution. ie. piling to the back gave more heat on that side, etc.
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