Hach A1000, Basic User Manual

Page: 22 / 138

Figure 20 Single-channel and multi-channel views
1 Conductivity (or resistivity) value
and sample temperature (°C) 6 Multi-channel view
2 TOC trend (average) for the last
hour (“+” or “–” identify the trend
direction) and profile type (oxidation
curve) of the sample. Refer to
Table 6 .
7 Channel 2: TOC concentration and
TOC trend over the last hour
9
3 TOC concentration 8 Channel 3: TOC concentration (
r
/
c
)
and TOC trend over the last hour
10
4 Channel ID-Name 9 Channel 4: PURGE MODE
11
5 Single-channel view 10 Channel 5: CLEAN MODE
12
Table 6 Profile types
Profile type Description
P1 Easy to oxidize
P2 Moderately difficult to oxidize (only in TOC levels below 25 ppb)
P3 Difficult to oxidize (intermediate organic acids are formed)
Analyzer display description
When started, the analyzer display shows the serial number and
firmware information for the analyzer. After startup, the analyzer display
shows the information shown on the controller display when it is in multi-
channel view.
Startup
Start the analyzer
1. Open the upstream isolation valve to let sample flow to the analyzer.
2. Push the analyzer power button to start the analyzer. The analyzer
does a series of self-diagnostic routines.
3. For portable analyzers, set the power switch for the printer to on ( | ).
4. Make sure that the display on the analyzer (S10 and XP-S models)
and controller come on. The channel LED on the controller for the
analyzer flashes red while the controller tries to make a
communication connection with the analyzer.
5. If “Sensor Head not communicating” is shown on the controller or if
the controller or analyzer fails to operate, examine the cable
connections. Contact Technical Support if the communication failure
cannot be corrected.
6. To see if any other alarms occurred, push ALARM .
7. When the self-diagnostic routines are completed, the sample flow
starts and the analyzer does an analysis cycle. Make sure that there
is flow to the analyzer. If there is no flow through the instrument,
make sure that the upstream isolation valve is open.
9
This analyzer is in Auto TOC mode.
10
This analyzer is in Auto TOC mode. "r/c" identifies that this analyzer is under remote digital control.
11
This analyzer is in Purge mode. Push VIEW to show the conductivity value and sample temperature (°C).
12
This analyzer is in Clean mode.
22 English