The Fieldpiece model ARH5 In Duct Psychrometer Accessory Head that measures temperatures and %RH in the prime location -- in the duct, near the evaporator. It’s great for calculating target superheat as well as logging %RH, temp, WB or DP over time. The ARH5 snaps directly onto Fieldpiece stick meters, data logger, electronic handles and adapters. Plus techs can get results wirelessly, like indoor wet bulb while they're at the condenser, when they use this accessory head with a wireless transmitter and wireless enabled Fieldpiece meter.
