9
3 Description
3.1 Gasmixing unit 3 and 4
The gasmixing unit serves as a dosage unit for medical gases
(e.g. O
2
, N
2
O, Air). The choosen gases can mixed in a arbitary
relation, but the ratio-system guarantees a O
2
-concentration not
lower then 21 % (see below). The different gases are clearly
displayed with rotary buttons.
To avoid mistakes, the O
2
-rotary button discerns from the others.
A unintentional move is prevented by a protection.
The dosing device makes a continuous flow enable, when opening
the valves by rotation against clockwise.
The O
2
-measuring range contains two measuring devices. This
makes a fine dosage possible.
The left measuring tube has a range from 0 to 2 l/min O
2
, the right
tube has a range from 2 to 15 l/min O
2
. As point of observation
serves the upper surface of the floating body.
The measuring tubes for AIR and/or N
2
O are laid out as double
cone measuring tubes. The lower zone of the measuring tubes
(AIR/N2O) is more finely gradated than the upper.
The side parts of the GMUE 3/4 can be changed in their dimensions
so it is possible to use different types of measuring tubes (e.g. firm
Rota, firm KDG and others).
0
0
G a s m i s c h e i n h e i t G M E 4
A r t . N r . 1 5 0 6 1 0 7 1
N 0
2
O
N 2
1
6
2
4
8
1 2
1 0
N 0
2
A r t . N r . 1 5 0 6 1 0 7 0
0 F L U S H
2
0
2
2
O
O
2
1 1
0 , 4
0 , 2
0 , 6
5
4
3
6
1
0 , 8
9
8
7
1 0
2
1 2
0
2
0 , 4
0 F L U S H
2
2
0 , 2
0 , 6
1
0 , 8
2
0 , 8
N 0
2
A
I R
2
0 , 6
0 , 4
0 , 2
A I R
2
5
4
3
2
6
2
4
1
1
6
2
4
6
9
8
7
1 2
10
8
8
1 2
1 0
1 2
1 1
1 0
A I R
N 0
2
2