KERN OEX 6K-3HM Operating Manual

Contents

5 ATEX marking – meaning of icon• The balances of the OEX series meet the requirements of group II,class 2 for devices in as per Directive 94/9/EU and are marked as -II 2 G IIC T4.Icon declaration as per Directive 94/9/EG:The balances of the OEX series are intended for indoor and outdoor use. However,they should not be exposed to aggressive chemical vapours, critical temperaturesand high humidity. The platform balance construction is made of stainless steel.Category for group IIdevices:1 – The deviceguarantees a veryhigh safety level,- for operation inareas 0,1,22 – The deviceguarantees a veryhigh safety level,- for operation inareas 1,23 – The deviceguarantees a normalsafety level,- for operation inArea 2Explosive atmosphere:G – Caused by gas, steamand mist.D – Caused by dustIcon for explosionprotection usedConstructiontype:o – Oil protectionp – Gasprotectionwithexcessivepressureq – Sandprotectiond – Flameproofprotectione – Reinforcedconstructionia – Intrinsicallysafeconstructionfor operationin areas0,1,2,ib – Intrinsicallysafeconstructionfor operationin areas 1,2,Electricalequipment –compatible withone or few typesof explosionprotectionconstructionsGas explosivity group -Examples:-IIA: Propane (T1)Benzene (T3)Butane (T2)Ethyl alcohol (T2)-IIB: Ethylene (T2)-IIC: Acetylene (T2)Hydrogen (T1),Temperature class – maxsurface temperature of deviceparts exposed to explosivemixtures:T1: 4500CT2: 3000CT3: 2000CT4: 1350CT5: 1000CT6: 850CTemperature classof gas and vapourspontaneous ignition:T1: > 4500CT2: > 3000CT3: > 2000CT4: > 1350CT5: > 1000CT6: > 850CSafety levelGas atmosphere:- Ga- Gb- GcDust atmosphere:- Da- Db- DcDoc.No.OEX-BA-e-1411 7