WPVS Transimpedance Amplifier
TIA
This is the small box that lets a lab pass ISO certification. The WPVS transimpedance amplifier converts the photocurrent of a non-shunted WPVS reference cell into a precise voltage with ±0.1% uncertainty, removing the shunt-resistance drift that otherwise corrupts the calibration chain, and giving every Pasan simulator unbroken traceability back to METAS and the SI.
±0.1% · METAS · WPVS reference cellsCalibration without shunt drift.
WPVS, World Photovoltaic Scale, reference cells are the non-shunted standard maintained by national metrology institutes. Dropping the parallel shunt resistor removes its temperature-dependent drift and non-linearity, the hidden source of uncertainty in older reference designs. They are how irradiance is traced to SI units.
- ▸StandardWPVS (non-shunted)
- ▸Removesshunt drift & non-linearity
- ▸Maintained bymetrology institutes
- ▸PerIEC 60904-3 reference cells
An unbroken chain to the SI.
The TIA converts a WPVS cell's photocurrent into a clean, lab-grade voltage that any electronic load or DAQ can read, so an ISO/IEC 17025 lab calibrates every simulator (HighLIGHT, A++ Reference, AM0) against the same reference, with no re-shunting and no systematic uncertainty from reference-cell ageing.
- ▸Outputprecision voltage, ±0.1%
- ▸ConnectorLEMO
- ▸EnablesISO/IEC 17025 calibration
- ▸AcrossHighLIGHT · A++ · AM0