PV Measurement Systems
The Egnitec PV measurement system (PVMS) keeps a module at its maximum power point, taking regular current, voltage and temperature measurements. It can also carry out current-voltage curve tracing. The module can also be held at either open or short circuit between IV traces. The unit includes two PT100 temperature sensor inputs. Several units can be controlled by datalogging software, allowing a PC to be used as a datalogger.
PVMS Specification

Datalogging Software
The datalogging software controls a number of PV measurement systems on a Windows PC. The datalogger is highly configurable and allows a PC to be used to capture maximum power point energy data and current-voltage traces, as well as temperature sensor measurements.