13
enabled membrane type will have an ‘X’ in the box next to it. Use the
down arrow key to highlight the
ESC – Exit
box and press enter to save
changes and to close the membrane submenu.
The dissolved oxygen sensor is supplied with membranes specific
to the sensor type and are color coded as described in the following
tables.
Galvanic Membrane Kits:
Model
Color
Material
Description
5913
Yellow 1.25 mil
polyethylene (PE)
Faster response time and less flow
dependence than traditional FEP
membranes.
5914
Blue
2.0 mil
polyethylene (PE)
Less flow dependence than 1.25 mil
membrane but little slower response.
Polarographic Membrane Kits:
Item
Color
Material
Description
5908 Yellow 1.25 mil
polyethylene (PE)
Faster response time and less flow
dependence than traditional FEP
membranes.
5909
Blue
2.0 mil
polyethylene (PE)
Less flow dependence than 1.25 mil
membrane but a little slower response.
Selecting a Dissolved Oxygen Membrane:
Membrane
Type
Flow Dependence
After 4 Minutes
Required Sample
Movement
Typical Response
Time (T-95)
5913, 5908
Yellow
25%
6 inches/second
8 seconds
5914,
5909 Blue
18%
3 inches/second
17 seconds
AUTO STABLE
Auto Stable
utilizes preset values to indicate when a reading is stable.
The preset values are adjustable in the System Setup menu. The user
can input a % change in dissolved oxygen readings (0.0 to 1.9) over ‘x’
amount of time in seconds (3-19).
Highlight
Auto Stable
and press enter
to expand the submenu.
Use the up or down arrow keys to highlight the DO% Change or
seconds (secs) input field, then press enter to make the highlighted
field adjustable. Use the up and down arrow keys to adjust the selected
value, then press enter to confirm changes. Once you have confirmed
