Icd is the manufacturer of vaf meter, 9000. The company has an iso 9001-2000 certification. The product is designed based on a micro controller. It has a digital calibration. The parameter can be selected through push buttons. The voltage input of the vaf meter is 80- 520 v ac line to line for lt, 25 -140 v ac to line for ht. The salient features of vaf meter, 9000: