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Atonometrics RC22M Reference Cell
Atonometrics RC22M Reference Cell

Atonometrics RC22M Reference Cell

Product Number: 880105_A

The RC22M Reference Cell and Accessories system is a comprehensive irradiance, temperature, and wind measurement solution designed for commercial and industrial PV arrays. 

Overview

The RC22M Reference Cell and Accessories system is a comprehensive irradiance, temperature, and wind measurement solution designed for commercial and industrial PV arrays. Key features of RC22M, main part number 810323-01, include:

  • Measures Irradiance, Wind, and Temperature: Measures irradiance (0 to 1500 W/m²), wind speed, back-of-module temperature, and ambient temperature.

  • Accurate Across a Wide Range: Offers high accuracy across a wide irradiance range with auto-ranging, and calibrations at both 1000 W/m² (STC) and 135 W/m² (BSTC).

  • Glass-to-Edge Design: Ensures water roll-off, reducing soiling for more accurate measurements.

  • Modbus RTU Communication: Digital communication via RS485, making it easy to integrate into existing systems.

  • Modular Design: Expandable with optional accessories, including wind speed sensors, ambient temperature RTDs, and back-of-module RTDs.

  • Ease of Installation: Features a compact, easy-to-mount package, with optional cables and connectors available in various lengths. Configuration is managed via software for seamless setup.

The RC22M pairs with Mars™ sensors for accurate performance monitoring, eliminating soiling-related inaccuracies. 

Specifications

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Technical Attributes
Measurement Range EU 0 to 1500 W/m2
Operating Temperature Range -40 to 80 °C
Input voltage 10-30 VDC
Current consumption Without wind sensor: typ. 6 mA; with wind sensor: < 60 mA
Communication protocol Modbus over RS485 (RTU), user-settable address
Ingress Protection Rating IP67
Measurement Uncertainty ± 2.0% @ 1000 W/m2
Irradiance Calibration ± 1.2% @ 1000 W/m2
Dimensions 65 x 65 x 48.0 mm (2.56 x 2.56 x 1.89 in)