Review on Fieldpiece SDP2 Dual In Duct Psychomotor by Gary Reed

Great tool for diagnosing and testing air conditioning systems. After measuring the amount of air, all I have to do is set it to enthalpy, and with two sensors, the meter reads the difference between flow and return. This avoids the steps of converting a wet bulb to enthalpy and performing mathematical operations. The same sensors also read dry bulb and wet bulb readings at times when those readings are needed. Probe extensions are very useful and avoid climbing stairs for many supply book reads.