Calibration - Bull's Eye

Your light measurements are not more accurate than your calibration. All light measurement systems need to be calibrated regularly. That goes for handheld devices too. All light measurements systems gradually change in time. This is a result of physical deterioration, temperature variation and contamination. Consequently, regular maintenance is essential for realistic uncertainty estimates.


Viso Systems generally recommends that our sensors are recalibrated every year, or as a minimum every other year.

Let Viso Help – Viso calibration services

Let Viso Systems help you with your recalibrations. Just send your sensor alternatively your LightSpion briefcase to Copenhagen for recalibration during one of our calibration campaigns – approximately every 4 weeks. Naturally, our goal is to keep your lab down-time as low as possible! Expect 1 lead time (excluding freight.). Send your service request directly to Viso headquarters ( or to your local distributor.  

Good advice

Make sure to have your system calibrated every year (or as a minimum every other year).  

Prior to sending your LabSensor/BaseSensor/LightSpion to Viso System, please make sure to locate all original reference lamps such as REF-800, CALI-T50 and CALI-DT300. We will recharacterize the reference lamp(s) with your newly calibrated sensor to make sure they match up going forward.