Fieldpiece SDP2 - Dual in-Duct Psychomotor
The two probes each simultaneously measure temperature and RH%. One goes before the evaporator (RETURN) and one goes after the evaporator (SUPPLY). These four measurements can be displayed or used in calculations to display the actual temperature split (delta T), the target temperature split, the actual evaporator exit temperature, or the target evaporator exit temperature (TEET), plus the difference between the actual and target. Enthalpy (BTU/LBM) and Dew Point can also be displayed. The TEET takes into consideration the latent heat used to condense water from the air, while a simple 20° temperature split ignores latent heat. TEET, developed by Fieldpiece, is better. Plus, it’s just easier in the field to aim for a single value (TEET) than a difference between two changing values.