Oil, Chemical, Liquid Flowmeter medium: petroleum, high water-content crude oil, low/middle/high viscocity petrochemical etc. ... 2.5, 4.0, 6.3medium: petroleum, high water-content crude oil, low/middle/high viscocity petrochemical & chemical solvents.indicator ... 4-20mATransfer coefficient:0.1L/P, 1L/Pburst proof: Ex dBT4grade: IP65connect: flange GB-/T9113.1-2000 standard: JB/T9242-1999 Oil, Chemical ...