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

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

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

4. © 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/ GMix41.pps

5. © 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: ,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/ GMix41.pps 
No multiplex operation!

6. © 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/ GMix41.pps
power supply
V, Hz, 2 A
LAB-manager

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

8. © 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/ GMix41.pps

9. © 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/ GMix41.pps

10. © 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/ GMix41.pps

11. © 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/ GMix41.pps
Inputs are pressure-resistant up to 20 bar

12. © 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: ,00 ml/min  Setting (0,5 sLm): 76 % of setting range
,00 ml/min  Setting (0,5 sLm): 76 %
CO2: ,00 ml/min  Setting (0,5 sLm): 13 %
© HiTec Zang GmbH - HRE - 25/07/ GMix41.pps

13. © 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: ,00 ml/min  Setting (0,5 sLm): 90 % of setting range
O2: ,00 ml/min  Setting (0,5 sLm): 24 %
CO2: ,00 ml/min  Setting (0,05 sLm): %
© HiTec Zang GmbH - HRE - 25/07/ GMix41.pps