Hach 900 MAX manual Storm Water, Section

Section 3

15-E.Enter the Start Time #1, press ACCEPT to continue. Enter Stop Time # and press ACCEPT to continue.

11:00 AM 21 - APR - 01

START/STOP TIMES

ACCEPT			CHANGE
	PROGRAM START #	1	AM/PM
	(TIME:DAY)
CLEAR			CHANGE
ENTRY			DAY

HIT CLEAR, THEN ACCEPT, AFTER LAST ENTRY

11:00 AM 21 - APR - 01

START/STOP TIMES

ACCEPT			CHANGE
	PROGRAM STOP #	1	AM/PM
	(TIME:DATE)
CLEAR			CHANGE
ENTRY			DAY

HIT CLEAR, THEN ACCEPT, AFTER LAST ENTRY

15-F.Continue entering Start and Stop times until finished. To exit and save entries, enter a blank time and date. Press CLEAR ENTRY and then press ACCEPT to continue to Storm Water.

Step 16 - Storm Water

EPA regulations for storm water discharges require monitoring of precipitation, flow, and water samples in order to assess the impact of storm or snow melt runoff on receiving waters. The manufacturer can help you create a storm water monitoring system that consists of a multiple bottle sampler, an external flow meter, and a tipping bucket rain gauge.

In addition to performing basic sampling routines, 900 MAX Series Samplers that are equipped with the storm water monitoring program have the following additional capabilities:

•The storm water sampling routine allows collection of automatic grab sample(s) at user-selectable timed intervals (up to 24 different intervals may be selected) during the storm's early stage or “first flush.” First flush grab and main program flow weighted composite samples are automatically segregated. The first flush sample volume may be set independently of the sample volume for the flow weighted composite.

•The special storm water program allows an external device to initiate the start of the sampling program. A dry contact closure across Pins B and D on the Auxiliary receptacle, held closed for at least 61 seconds, is required.

•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.

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Advanced Sampling	8990startup.fm