Hach 900 MAX Instrument Manual page 60

Section 3
Step 18 - Upset Sample
Note: Unlike Setpoint Sampling,
Upset Sampling can be enabled
while the sampler is performing its
regular sampling program. There
must be more than one bottle in the
sampler to perform Upset Sampling.
Page 58
Advanced Sampling
17-D. Enable or Disable Continuous Mode using the
Continuous Mode is enabled the program will continuously run and
switch bottle sets after every specified duration elapses, until manually
stopped. If Continuous Mode is disabled, then the sampling halts when
the last bottle set in the tray is full.
17-E. Press to continue to Upset Sample.
ACCEPT
Upset Sampling analyzes the collected samples to determine when samples
meet or exceed specified upset limits. The sampler will swing the distributor
arm around to a sequestered set of bottles and grab an upset bottle.
The upset sample bottles are always the last bottles in the tray. For example, if
there are 24 bottles in the tray, 4 first flush bottles and 4 upset bottles, then the
bottles assignment is 1–4 first flush, 5–20 main program, and 21–24
upset samples.
Upset Samples are collected even when there are no more regular samples to
be taken; when the status screen says Program Complete, but the bottom line
of the display says Program Running.
Refer to the Quick Start Guides on page 103
individual channels.
18-A. Highlight Upset Sampling using the
Advanced Sampling Menu. Press
11:00 AM 21 - APR - 01
START/STOP TIMES
STORM WATER
SELECT
TIMED BOTTLE SETS
UPSET SAMPLING
VARIABLE INTERVALS
VARIABLE VOLUME
RETURN
18-B. Enable or Disable Upset Sampling using the
Press to continue.
ACCEPT
18-C. Press
CHANGE CHOICE
Press to make the selection.
ACCEPT
18-D. Press either
HIGH CONDITION
• Flow Rate of Change and Rainfall are signals that only increase in
value and do not require Low Condition.
• The external control signal (such as an external flow meter) must be
configured in the external equipment for the desired setpoint.
11:00 AM 21 - APR - 01
UPSET CONDITION:
CHANGE CHOICE
for more setup information for
and
UP DOWN
to continue.
SELECT
ADVANCED SAMPLING
CHANGE CHOICE
to select the desired channel to trigger from.
or .
LOW CONDITION
key. If
keys on the
key.
UPSET SAMPLES
HIGH
CONDITION
LOW
CONDITION
8990startup.fm