Atonometrics RC22 PV Reference Cell
Product Number: 880094_ARC22™ is a compact PV reference cell designed for high‑accuracy irradiance measurement in monofacial and bifacial solar systems.
Overview
The RC22 is a compact PV reference cell optimized for accurate irradiance measurement in both monofacial and bifacial PV systems. It supports dual calibration at 1000 W/m² (STC) and 135 W/m² (BSTC), with auto-ranging high and low scales to ensure reliable front- and rear-side irradiance measurements.
Designed for easy installation, the RC22 features integrated mounting options for front or rear array mounting and a glass-to-edge design that improves water roll-off and reduces soiling. It uses an M12 five-pin connector with Modbus RTU communication over RS485 and is available with overmolded cables in multiple lengths. The IP67-rated enclosure ensures robust performance in outdoor environments.
Specifications
Technical Attributes
| Measurement Range EU | 0 to 1500 W/m2 |
| Operating Temperature Range | -40 to 80 °C |
| Input voltage | 10-30 VDC |
| Current consumption | Typ. 10 mA |
| Communication protocol | Modbus over RS485 (RTU), user-settable address |
| Ingress Protection Rating | IP67 |
| Dimensions | 65 x 65 x 24.4 mm (2.56 x 2.56 x 0.96 in) |
| Weight | 170 g (0.375 lbs) |
| Stability | 0.5% / year |
| Irradiance Calibration | ± 1.2% @ 1000 W/m2 |
| Measurement Uncertainty | ± 2.0% @ 1000 W/m2 |
| Cell Temperature | ± 1 °C |
| Standards | IEC 61724-1 Class A |
Resources
Manuals (1)
Data Sheets (1)
810324-01
Atonometrics MT2