The Additel ADT681IS-20-GP36K-PSI-AF-DL is a high-accuracy, intrinsically safe pressure calibrator that stands out with its: Unmatched accuracy of ±0.025% of reading Intrinsically safe design for hazardous environments Wide pressure range of 0 to 36,000 psi Advanced features like auto-ranging, data logging, and HART communication* Rugged construction for demanding industrial applications