Maintenance - Hach Sigma 950 Manual Básico Del Usuario

4. Select an option.
Option Description
DISPLAY Shows the data log in table format. VIEW FROM START—Shows the oldest data point first.
DATA VIEW FROM END—Shows the newest data point first. VIEW FROM TIME/DATE—Shows the
data points recorded on and after a specified time and date.
Note: The totals shown are the calculated totals of the logged data. If the date selected is
before available logged data, the totals shown will not be correct.
DISPLAY Shows the data in graph format. GRAPH DAY—Shows the data for a date range (12 am to
BY GRAPH 12 am). GRAPH POINT IN TIME—Shows the data for a specified time and date (3 hours of
data). GRAPH PARTIAL DAY—Shows the data for part of a day.
The status bar shows the time, date, reading recorded at the location of the data cursor
(vertical line on graph).
Note: When less than 3 hours of data is shown on the display, all the data points show on the
graph. When more than 3 hours of data is shown on the display, the data points shown are
average values.
5. To move the data cursor on a graph:
• Push the LEFT and RIGHT arrows.
• Push a numeric key.
The numeric keys (0–9) represent a percentage. For example, push 5 to move the data cursor
to the middle of the graph (50%).
6. To see the data log for another input channel, push NEXT CHANNEL.

Maintenance

Multiple hazards. Do not disassemble the instrument for maintenance. If the internal components must
be cleaned or repaired, contact the manufacturer.
Clean the instrument
Do not use solvents to clean the instrument.
The instrument is maintenance free. Regular cleaning is not necessary for normal operation. If the
exterior of the instrument becomes dirty, wipe the instrument surfaces with a clean, moist cloth.
Replace the bubbler desiccant
When the desiccant beads in an air dryer cartridge become pink, replace the desiccant beads or the
air dryer cartridge. The air dryer cartridges are located on the right side of the instrument. The
desiccant beads in the dryer cartridges remove moisture from the air that is pulled into the instrument
for the bubbler.
1. Pull the air dryer cartridge out of the clip.
2. Turn the end cap of the dryer cartridge up.
3. Turn and remove the end cap from a dryer cartridge.
4. Remove the desiccant beads from the dryer cartridge.
5. Examine the white hydrophobic filter membrane that is in the end cap. If the membrane is not
white or has a blockage, replace the membrane. Make sure that the dull side of the membrane is
toward the incoming air flow.
6. Put new desiccant beads in the dryer cartridge.
24 English
W A R N I N G
N O T I C E