© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Gas Mixing Device

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Common Configuration LAB-manager2 basis (6 HE table box) © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Lower casing: LAB-manager control unit

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Common Configuration LAB-manager2 basis (6 HE table box) © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Upper casing: Mass flow controllers, gas attachments and connections

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Operation conditions  Inputs: 1 to 4 gas inputs  Outputs: 1 to 4 gas outputs  Connection with Swagelok Quick couplers DN 4  Gas settings ex factory: Air, O2, N2, CO2 (not condensing)  further gase on request  Pressures: Input pressure 2 to 8 bar Output pressure 0 to 6 bar Pressure difference: min. 2 bar © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Mass Flow Controller  Thermal mass flow controller for air, O2, N2: 0 - 0,05 sLm, 0 - 0,5 sLm, 0 - 5 sLm for CO2: 0 - 0,03 sLm, 0 - 0,3 sLm, 0 - 3 sLm sLm = standard liter / min (0°C, 1013 mbar)  Each component is controlled seperately on each output © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps  No multiplex operation!

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Control Unit analog and digital in- and outputs interface cards © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps power supply 110-230 V, 50-60 Hz, 2 A LAB-manager

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Gas mixing Unit Pressure transmitters © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Mass flow controller Magnetic valves

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Other versions for stand-alone operation  Stand-alone operation possible (based on LAB-Vision) GMix41 GMix44 © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps User interface in RAMOS integrated  fully integrated in RAMOS user interface © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps User interface in RAMOS integrated  GMix software runs on RAMOS desktop PC parallel in the background © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Comfortable Handling  Settings in RAMOS software  operating GMix-software runs invisible in the background  Operation- and error messages are logged in RAMOS documentation  Monitoring of limit values  Shut-off of the gas mixing device at input pressure > 8 bar, output pressure > customer limit value  Warning at pressure differences < 2 bar (input/output) (required for safe flow control)  Alarm messages at flow beyond tolerance © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Inputs are pressure-resistant up to 20 bar

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Examples Example 1: RAMOS-high flow at 800 ml/min (standard) Mixture of gases: Luft: 95% (0,5 sLm + 0,5 sLm) CO2: 5% (0,5 sLm + 0,05 sLm) Controller setting: Air: 1. 380,00 ml/min  Setting (0,5 sLm): 76 % of setting range 2. 380,00 ml/min  Setting (0,5 sLm): 76 % CO2: 1. 40,00 ml/min  Setting (0,5 sLm): 13 % © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps

© HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps Examples Example 2: RAMOS-high flow reduced to 600 ml/min, High flushing phase (between 40 and 80 s) extended accordingly Mixture of gases (synthetic): N2: 75% (0,5 sLm) O2: 20% (0,5 sLm) CO2: 5% (0,5 sLm + 0,05 sLm) N2: 450,00 ml/min  Setting (0,5 sLm): 90 % of setting range O2: 120,00 ml/min  Setting (0,5 sLm): 24 % CO2: 30,00 ml/min  Setting (0,05 sLm): 100 % © HiTec Zang GmbH - HRE - 25/07/2005 - GMix41.pps