Solar radiation sensor with electrical output signal 3S-WPVS

with mV outputanaloganalog output

Product overview
The WPVS (World PV Scale Standard) reference cell 3S-WPVS is a precision irradiance sensor based on a monocrystalline silicon reference cell (20 x 20 mm), designed for calibration and measurement in PV test laboratories and solar simulator setups. It provides PV-matched spectral response and integrated cell temperature measurement for standard test condition adjustments.

Key features

• Monocrystalline silicon reference cell 20 x 20 mm with PV-matched response
• Irradiance and cell temperature measurement (PT1000 Class A)
• Analog voltage output (mV) via integrated precision shunt resistor
• Field of view: 162°
• Standard electrical connection: 1 m UV- and weather-resistant 2x2x0.22 mm cable
• Connectors: M8 metal gland (standard) or LEMO EGG.0B.306.CLL (optional)
• Anodized aluminum housing, compact 70 x 79 x 16 mm, weight ~250.8 g
• IP68 options for outdoor use
• Calibrated and manufactured according to IEC 60904-2; each unit calibrated under a Class AAA sun simulator with ISFH-certified reference cell
• 5-year warranty

How it works

• The monocrystalline cell generates a current proportional to incident irradiance
• A precision shunt resistor converts current into a measurable voltage (mV)
• A PT1000 temperature sensor under the cell provides cell temperature for thermal correction
• Analog irradiance (mV) and temperature outputs integrate with data loggers and test systems

Available models

• 3S-WPVS-IV — Analog (mV) output, M8 metal gland connector
• 3S-WPVS-L — Analog (mV) output, LEMO EGG.0B.306.CLL connector

Optional albedo version

• Two-sensor configuration available: one sensor for plane-of-array (POA) irradiance and one for reflected irradiance
• Recommended for bifacial PV systems, albedo measurement and performance ratio calculations

Applications

• Solar module test laboratories
• PV module manufacturing quality control
• Solar simulator calibration rigs
• R&D centers
• Bifacial PV system performance analysis and albedo studies

Notes on units and measurement

• WPVS reports irradiance in "sun units": 1 sun = 1000 W/m² at 25°C
• Analog mV output allows direct measurement and conversion to irradiance using calibration data

Pricing

• 3S-WPVS-IV: 350 EUR
• 3S-WPVS-L: 860 EUR

Technical specifications

• Item code: 3S-WPVS-IV, 3S-WPVS-L
• Reference cell: Monocrystalline silicon (20 mm x 20 mm)
• Field of view: 162°
• Data output: mV (via integrated precision shunt resistor)
• Electrical connection: 1 m 2x2x0.22 mm LI2Y(St)C11Y-TP cable, UV and weather resistant (standard)
• Cell temperature sensor: PT1000 Class A (EN 60751)
• Connection: M8 connector (standard) / LEMO connector (optional)
• Housing dimensions: 70 x 79 x 16 mm (W x L x H)
• Weight: 250.8 g
• IP rating: IP68 options
• Housing material: Anodized aluminum
• Compliant standard: IEC 60904-2
• Calibration: Calibrated under Class AAA sun simulator according to IEC 60904-2 and IEC 60904-4 using ISFH-certified reference cell