This instrument is a Swiss-army-knife tool capable of almost every basic measurement a technician might need at a solar power installation. It is not merely a voltage meter but a full diagnostic instrument that lets you analyse why a system is performing as it is. Measuring both how much the sun is delivering (W/m²) and what the panel produces in response (volts, amps) with the same instrument dramatically speeds up installation, maintenance and fault finding.
The CEM LA-1017's primary specialism is measuring solar irradiance — the "fuel" of photovoltaic systems. Without that measurement it is impossible to assess a panel's efficiency correctly.
The high precision of this measurement (typically ±10 W/m²) and its very fast response time of around 0.25 seconds let you capture even momentary changes in the field.
A solar panel marked "450W" will not always produce 450W. That figure is measured under Standard Test Conditions (STC) — 1000 W/m² irradiance and a 25°C panel temperature — and those conditions rarely occur in the real world.
The second half of the CEM LA-1017 is not an add-on but a professional, fully featured digital multimeter in its own right, rated to CAT III 600V. That means it can be used safely not only at panel level but at high-energy points such as distribution boards and inverter outputs.
An analysis that would take hours with two separate instruments, or with a multimeter alone, is completed in minutes with the LA-1017.
