RC22M Reference Cell and Accessories Irradiance, Temperature, and Wind Measurement System for Commercial and Industrial PV Arrays Wind Speed Sensor (optional) Key Features Miniature Met Station • Irradiance, wind speed, back-of-module temperature, and/or ambient temperature measurements • Small package with simplified mounting features • Digital communication over Modbus RTU (RS485) • Accurate irradiance from 0 to 1500 W/m2, thanks to high and low irradiance scales with auto-ranging • Calibrations at both 1000 W/m2 (STC) and 135 W/m2 (BSTC) • Unique glass-to-edge feature allows water roll-off and eliminates excess soiling • Pair with Mars™ sensor to eliminate inaccuracy due to reference cell soiling • Easily expand the base RC22M with connectorized accessories • Optional wind speed sensor provides wind speed data via the RC22M modbus registers • Two temperature channels provide optional 3-wire Pt1000 RTD readout via RC22M modbus registers • Optional back-of-module RTD has self-adhesive layer for easy peel-and-stick installation • Compatible cables with secure over-molded connectors available in multiple lengths • Configuration manager software configures the RC22M and optional accessories

Reference Cell Current consumption Without wind sensor: typ. 6 mA; with wind sensor: < 60 mA Window Low-iron solar glass Internal cell temperature Pt1000 RTD Calibration data Internally calibrated; no calibration data to manage Communication protocol Modbus over RS485 (RTU), user-settable address Enclosure material Anodized aluminum housing Mounting Side and bottom mounting holes Power and comm. cable Shielded, weather resistant, UV-rated, 24 awg / 0.2 mm2 4 m, 10 m, 25 m, 50 m, 100 m (order separately) Irradiance calibration ± 1.2% @ 1000 W/m2 RTDs Sensing element 1000-ohm 3-wire Pt1000 RTD...