Class C pyranometer SR05-A1

analogRS-485voltage output

The SR05-A1 from Hukx is an analog Class C pyranometer designed for solar radiation measurement with a millivolt (mV) output. It is a spectral-flat Class C sensor suitable for general irradiance monitoring in meteorological and agrometeorological networks and for commercial-scale PV performance monitoring.

Main features

• Spectral-flat Class C (ISO 9060:2018).
• Analog millivolt (mV) output — SR05-A1 model.
• Easy to mount; optional ball leveling and tube mounts available.
• SR05 series available in digital and analog versions for system integration (Modbus/RS-485, TTL, 0–1 V, 4–20 mA options).
• Cost-efficient design suitable for large networks.

Versions and available outputs

• SR05-A1: analog Class C pyranometer with mV output.
• SR05-D1A3: digital Class C pyranometer with Modbus via RS-485 and 0–1 V output.
• SR05-D2A2: digital Class C pyranometer with Modbus via TTL and 4–20 mA current loop output.

Suggested applications

• General solar irradiance measurements.
• Meteorological and agrometeorological networks.
• PV system performance monitoring in commercial installations (module-plane irradiance, IEC 61724-1 Class B when applied accordingly).

Options

• No cable
• 3 m (9.8 ft)
• 5 m (16.4 ft)
• 10 m (32.8 ft)
• 20 m (65.6 ft)
• 30 m (98.4 ft)
• 50 m (164 ft)
• 70 m (229 ft)
• 100 m (328 ft)
• 130 m (426 ft)

Technical characteristics / specifications

• Measured parameter: global solar radiation (irradiance in W/m²).
• ISO 9060:2018 classification: spectral-flat Class C pyranometer.
• IEC 61724-1:2021 compliance: Class B system when applied to module plane as specified.
• ISO 9060:1990: second-class pyranometer.
• WMO performance level: moderate quality.
• Calibration uncertainty: < 2.4 % (k = 2).
• Calibration traceability: WRR (World Radiometric Reference).
• Spectral range: 285–3000 nm.
• Operating temperature range: -40 to +80 °C.
• Heater: no integrated heater.
• Inclinometer: not integrated.
• Standard cable length: 3 m (other lengths available).
• Nominal operating voltage: passive sensor (mV output).
• Leveling: optional ball leveling; tube mount available (with/without).
• Output: analog mV (nominal sensitivity: 10 × 10⁻6 V/(W/m²)).