Digital Transformer Ratiometer DTR Model 8511 (110/220V), 2116.21, & 2136.50

The DTR 8511 is the next-generation digital transformer ratiometer, engineered to make transformer testing faster, safer, and more reliable than ever. Building on the proven performance of the DTR 8510, this enhanced model introduces modern upgrades for the field—combining rugged portability with advanced measurement technology. No hand cranking. No calibration. No wasted time. The DTR 8511 was built for fast, accurate, and hassle-free testing of transformers (power, VT/PTs, and CTs). With its brighter display, ergonomic design, and built-in safety checks, you’ll have confidence in every result.

The AEMC Instruments Digital Transformer Ratiometer DTR Model 8511 (110/220V), 2116.21, & 2136.50 # 8511 is manufactured by AEMC Instruments. Valley Instrument Service is an authorized AEMC Instruments dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.