ExReg HVACControl Systems.The ExReg controller system has been designedfor use in Ex areas for all gases, mists, vapours and dust. In combination withEx-actuators it is a closed loop control system for volume flow control (VAV,CAV), pressure, temperature and humidity.Operating temperature range -20 to 50 oC (-4to 122 oF)Measurement differential pressure range 0 Pato 300 PaMeasurement temp. range -40 to +125 °C (-40 to 257 oF)Measurement humidity range 0 to 95% rHStainless steel housing (option)ATEX 94/9/EC, zone 1, 2, 21, 22 cert + othersWatertight IP66 rating, integrated junctionboxIntegral PID loopPre-defined parameter sets for the most commoncontrol tasksCan be configured on site in the hazardouslocation