DESMI PUMPING TECHNOLOGY A/S P a g e | - 4 -Tagholm 19400 Nørresundby - DenmarkPhone.: +45 96 32 81 11Fax : +45 98 17 54 99E-mail: desmi@desmi.comwww.desmi.comDESMI produces pump units for potentially explosive environments, but as a standard ROTANpump units are not prepared for use in potentially explosive environments, and therefore theymust not be used in such contexts without DESMI’s consent. The information on the pump’sname plate will define whether it can be used in a potentially explosive environment.DESMI can supply pump units for potentially explosive environment within the areas indicated inFigure 1:Shows the group (G=Gas/D=Dust), the categories, zones and temperature classes(T1/T2/T3/T4) for which DESMI PUMPING TECHNOLOGY A/S can supply pump units withinpotentially explosive environments..AtexGroup II - G/DCategory 2 Category 3Zone 1 Zone 21 Zone 2 Zone 22Gas / steam / mist Dust Gas / steam / mist DustT1 / T2 / T3 / T4 /Figure 1:Shows the group (G=Gas/D=Dust), the categories, zones and temperature classes (T1/T2/T3/T4)for which DESMI PUMPING TECHNOLOGY A/S can supply pump units within potentially explosiveenvironments.If the pump is required to be used in a potentially explosive environment, this must be statedwhen ordering so that the pump unit can be supplied especially for such conditions.DESMI PUMPING TECHNOLOGY A/S can supply the following control equipment to pumps ina potentially explosive environment:Control equipment ProtectionThermal sensor For registration of surface temperature (to be connected tocontrol)Temperature labels Temperature labels indicate the max. temperature reachedBypass valveThe bypass valve protects pumps and motors in the event ofbrief pulsating excess pressures in the system. The bypassvalve does not give protection against the pipe systemLiquiphant™ The Liquiphant™ provides protection against dry running
