The SRH3 InDuct Psychrometer is a great tool to properly charge fixed restirctor systems by quickly determining the target superheat, and to help determine optimum airflow across the evaporator with a target evaporator exit temperature test. To assist HVACR professionals get the proper measurements, Fieldpiece engineered this in-duct psychrometer to take measurements in the duct where they are supposed to be taken - near the evaporator!
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Comments about SRH3, In-Duct Digital Psychrometer:
We use this meter every day during air conditioning season, to determine proper refrigerant charge, and check AC performance. We also use it year around to test for humidity levels in homes and buildings.
The best part of this meter is the Target Super Heat calculation. Priceless versus having to take separate reading and plug those readings into a chart to calculate proper superheat for AC systems.
Plus supplyhouse.com had them in stock and had the best price at the time of purchase.