Programming Instructions For Storm Water Sampling Routine - Hach Sigma 900 User Manual

5.12.1 Programming Instructions for Storm Water Sampling Routine

Item
Message
Number
1 LEVEL CONTROL?
2 STORM MODE?
FIRST FLUSH
3
INTERVAL = _ _ MIN
4 # BOTTLES = _ _
SET TIMED INTERVAL,
5
INTERVAL 01 = _ _ MIN
BOTTLES PER
6 SAMPLE? or SAMPLES
PER BOTTLE?
7a BOTT/SAMP = _
7b SAMP/BOTT = _ _
CHANGE FIRST FLUSH
8
VOLUME?
9a VOLUME = _ _ _ _ mL
9b CALIBRATE VOLUME?
8837prg.fm
• When sampling with multiple bottles, the sampler can be programmed to
collect one large "first flush" sample (or small multiple samples) at timed
interval(s). The number of bottles segregated for the first flush sample is
selectable. Concurrently, flow weighted samples are collected from the
beginning of the storm until all remaining bottle(s) are filled, or after a user
selected time has elapsed.
• Storm water samplers are equipped with a special prerinse that occurs
only with the first sample collection. This "one time only" rinse assures a
clean intake for installations that may remain dormant for extended
periods, and extends battery life by eliminating the prerinse for
subsequent samples.
With the sampler in any of the three standby states (
,
PROGRAM HALTED PROGRAM COMPLETE)
key for several seconds. The display will read
to disable the storm water program routine. Press
water program.
The table below explains the storm water programming choices:
Press to access the storm water program. The display prompts the question in
YES
item 2. Pressing disables the storm water program routine and also displays the
NO
question , which is explained in the following section titled "Special
SPECIAL OUTPUT?
Outputs".
Press to proceed to the first storm water programming prompt. The message in
YES
item 3 appears. Press to disable the storm water program routine and permit
NO
programming the sampler for level control.
Select the timed interval for which you want to collect samples during the early stage
(first flush) of the storm event. Typically, the first flush interval is 30 min.
If the sampler is programmed for single bottle (composite) sampling, no samples are
collected in the first flush interval. The assumption is made that if the sampler is
equipped with only one bottle, the first flush sample is collected manually. After the first
flush interval lapses, samples are collected in the manner programmed in the main
program as described in section
Enter the number of bottles to be allocated for the first flush sample(s).
Set up to 24 different time intervals during the first flush interval. Press the
repeat the last entered time interval for subsequent samples. Enter the time interval for
collecting samples in the first flush period.
This message appears if the sampler is programmed for multiple bottle operation.
Select the desired multiplex mode—either bottles per sample or samples per bottle. If
the desired mode appears, press the
This will cause the desired mode to appear.
Enter the number of bottles for each sample collected within the first flush interval.
Enter the total number of samples to be delivered to each bottle.
Enter the volume of the first flush/grab sample independent of the sample volume of
the flow weighted composite. Press the
Press the key to display the next prompt.
YES
Enter the volume of the first flush sample(s).
Item 9c will appear if you press the
press and hold the
LEVEL CONTROL?
YES
Description of Message
5.5.
key. If it does not appear, press the
YES
key to retain the volume previously entered.
NO
key. Item 9d will appear if you press the
YES
Storm Water Programming
Section 5
,
READY TO START
CLEAR ENTRY
. Press
NO
to access the storm
key to
NO
key.
NO
key.
NO
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