1 storm water runoff sampling, 1 storm water runoff sampling -5 – Teledyne 6712SR User Manual

Page 93

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6712SR Refrigerated Sampler

Section 5 Extended Programming

5-5

5.6.1 Storm Water Runoff

Sampling

Storm water runoff sampling is an ideal application for two-part
programming. Typical monitoring permits require that a series
of timed samples be taken during the initial portion of the storm
event, followed by flow paced samples during the remainder of
the event.

This example assumes that a Rain Gauge and a Bubbler Flow
Module are connected to the sampler.

Note

To enable the Bubbler Module programming screens, insert
the module before turning on 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 enabled according to program-
mable 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 program 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’, bottles 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;

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