Class C pyranometer SR05-D1A3

analogModbusRS-485

Overview

The SR05-D1A3 is a cost-efficient, spectrally flat Class C pyranometer designed for reliable hemispherical solar radiation measurements in meteorological networks and photovoltaic (PV) monitoring systems. It offers simple mounting and industry-standard digital and analog outputs for straightforward integration into monitoring platforms.

Highlights

• Spectrally flat Class C design optimized for general solar radiation measurement (SR05 series).
• Digital (Modbus RS-485) and analog (0–1 V) output options for flexible integration.
• Compact single-dome thermopile sensor with optional ball-leveling and tube mount for simplified installation.

Versions

• SR05-D1A3: Modbus over RS-485 and 0–1 V analog output (this product).
• SR05-D2A2: Modbus over TTL and 4–20 mA current loop output.
• SR05-A1: conventional analog millivolt output.

Benefits

• Industry-standard interfaces reduce integration time and maintenance costs.
• Affordable Class C performance suitable for wide deployments and budget-conscious networks.
• Easy leveling and mounting options accelerate field installation and servicing.

Technical specifications

• Measured quantity: hemispherical solar radiation (180° field of view).
• ISO 9060:2018: spectrally flat Class C.
• IEC 61724-1:2021: Class B system compliance.
• ISO 9060:1990: second class pyranometer equivalent.
• WMO performance level: moderate quality.
• Calibration uncertainty: < 2.4 % (k = 2).
• Calibration traceability: World Radiometric Reference (WRR).
• Spectral range: 285–3000 × 10⁻⁹ m (285–3000 nm).
• Operating temperature range: -40 to +80 °C.
• Heating: none.
• Tilt sensor: none.
• Standard cable length: 3 m (other lengths available).
• Rated supply voltage: 5 to 30 VDC.
• Leveling: optional ball leveling, with or without tube mount.
• Digital output: Modbus RS-485 (2-wire half duplex); variables: irradiance (W/m²) and instrument body temperature (°C).
• Analog output: 0–1 V (SR05-D1A3).