... 6~4000mm,4~20mA easy instal&control waste water flow meter,water level meter,water metermain technical indicesMeasured mediaLiquid, gas, steamNominal diameterPipeline ... type (ExiallBT4)Protection classIP65; IP67;IP68Note: Size of flowmeter flange shall execute GB/T9115.1~9115.4~2000 series ... standard. For pipeline type, small diameter flowmeter of DN6, DN8, DN10 etc. can be manufactured ...