Fieldpiece SRH2 Diagnostic Psychrometer
HVACTool.net Product Description
The SRH2 measures temperature and relative humidity
From those two measurements, it calculates wet bulb and dew point
The SRH2 calculates Target Superheat (TSH) and Target Evaporator Exit Temperature (TEET)
TEET alerts the technician of airflow problems across the evaporator
A superheat analysis allows the technician to determine if the refrigerant charge is correct on a system with a fixed restrictor