Class C pyranometer SR05-D2A2

analogTTLModbus

Overview
The SR05-D2-A2 is an affordable spectrally flat Class C pyranometer designed for reliable measurement of global solar irradiance in PV monitoring systems, agricultural meteorology, and meteorological networks. Combining a thermopile sensing element with both digital and mA analog outputs, the SR05-D2-A2 offers easy integration, straightforward installation, and high performance for cost-effective PV monitoring systems.

Key features
• Class A performance: fully compliant with ISO 9060:2018 Class A classification and IEC 61724-1 requirements for Class A PV monitoring systems.
• Dual-output design: provides both Modbus RTU communication over TTL and a 4 to 20 mA analog output for flexible system integration.
• Easy installation and leveling: features an integrated bubble level with optional ball-leveling and tube-mount accessories for simplified field installation.
• Affordable pricing: budget-conscious Class C performance for large networks.

Applications
• General solar radiation measurements.
• (Agro-)Meteorological networks.
• IEC 61724-1 Class B plane of array irradiance in commercial-scale PV system performance monitoring.
• IEC 61724-1 Class A reflected radiation in utility-scale PV system performance measurement.

Specifications
• Measurand: Global solar irradiance [W/m²]
• Sensor classification: ISO 9060:2018 spectrally flat Class C pyranometer
• Measurement range: 0 to 2000 W/m²
• Temperature response (-10 °C to +40 °C): < ±3 %
• Operating temperature range: -40 °C to +80 °C
• Calibration uncertainty: 2.4 % (k = 2)
• Electrical operating voltage: 5 to 30 VDC
• Communication protocol: MODBUS RTU over TTL
• Analog output: 4-20 mA
• Recommended calibration interval: < 2 years

Cable length options
• No cable
• 3 m
• 10 m
• 20 m