6700SR Refrigerated Sampler
29
Example 6 Storm Water Runoff Sampling
Storm water runoff sampling is an ideal application for two-part pro-
gramming. Typical monitoring permits require that a series of timed
samples be taken during the initial portion of the storm event, fol-
lowed by flow paced samples during the remainder of the event.
This example assumes that a Rain Gauge and a Bubbler Flow Mod-
ule are connected to the sampler. Using a 24-bottle kit, it divides
the bottles into two groups, with six bottles assigned to part ‘A’ and
18 to part ‘B.’ The sampler will begin taking samples after being en-
abled according to programmable enable controls; that is, when the
rain gauge detects 0.15 inches of rainfall in 30 minutes, and the
module detects a flow stream level of more than 0.25 feet. Because
both program parts use the same enable settings, the sampler will
enable both parts at the same time. A list of settings for the pro-
gram follow:
• Program type: Extended.
• Program name: STORM.
• Site description: SITE 54.
• Units: Length – Ft, Flow Rate – gpm, Flow Volume – gal
• Mode of Operation: Flowmeter, Flow-Insert, Round, 12"
• Bottle kit: 24, 1000-milliliter bottles.
• Suction-line length: 5 feet.
• Suction head: Auto suction head.
• Line rinses: None.
• Sampling retries: None.
• Part ‘A’ and ‘B’ bottle assignments: Bottles 1 - 6 to part ‘A’, bot-
tles 7 - 24 to part ‘B’.
• Part ‘A’ pacing: Time pacing, sampling every 5 minutes.
• Part ‘A’ distribution: Sequential, 1 sample per bottle.
• Part ‘A’ sample volume: 800 milliliters.
• Part ‘A’ enable: At least 0.15 inches of rainfall in 30 minutes
and a flow stream level of more than 0.25 feet; once enabled,
stay enabled, sample taken when the sampler is enabled.
• Part ‘A’ pause and resumes: None.
• Part ‘B’ pacing: Flow pacing, sampling every 2,500 gallons.
• Part ‘B’ distribution: Sequential, 1 sample per bottle.
• Part ‘B’ sample volume: 500 milliliters.
• Part ‘B’ enable: At least 0.15 inches of rainfall in 30 minutes
and a flow stream level of more than 0.25 feet; once enabled,
stay enabled, no sample taken when the sampler is enabled;
first sample taken 20 minutes after the sampler is enabled.
• Part ‘B’ pause and resumes: None.
• Start time: Delayed start of 1 minute.
• 730 Bubbler Module: Installed
To enable the Bubbler Module
programming screens, insert the
module before turning on the
sampler.
Note
To Next Page
Loading...