Step 15 - start/stop times – Hach 900 MAX User Manual

Page 55

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Section 3

Page 53

8990startup.fm

Advanced Sampling

Bottle Number
If the Program Complete Output is disabled, then it is used in conjunction with
this Special Output to transmit the bottle number to the connected device.

The Special Output signal can be configured to activate during one of the
following conditions:

After Each Sample—One second pulse at the completion of each sample
cycle. It signals an external datalogger or PC that a sample cycle was
initiated. When this choice is enabled, the sample success/failure is also
transmitted to the external datalogger by means of Pin F on the
Auxiliary connector.

Only When Pumping—During sample intake portion of cycle only,
ignoring all purges and rinse cycles. Used for tipping solenoid or ball
valves when sampling from a pressurized line.

From Rinse To Purge—During entire sample cycle, including all purge
and rinse cycles. Used for tripping solenoid or ball valves when sampling
from a pressurized line.

Step 15 - Start/Stop Times

Start/Stop Times start and stop a program at pre-arranged times. For
example, this feature can be used to run a program during weekdays and stop
the program during weekends, restarting on the following Monday. It can also
halt sampling for nighttime shutdowns.

Up to 12 Start and 12 Stop time entries can be set in any one program. Either
a Start Time and Date or a Start Time and Day of the Week may be selected.

15-A. Highlight the Start/Stop Time choices on the Advanced Sampling menu.

Press

SELECT

to continue.

15-B. Enable or Disable Start/Stop Times using the

CHANGE CHOICE

key.

Press

ACCEPT

to continue.

15-C. Press

CHANGE CHOICE

to select either Time/Date or Time/Weekday.

Select Time/Date if the start and stop times are longer than one week.
Select Time/Weekday if the program repeats on a daily or weekly basis.

15-D. Press

ACCEPT

to continue.

11:00 AM 21 - APR - 01

ADVANCED SAMPLING

SELECT

PGM CMPLT OUTPUT
SETPOINT SAMPLING
SPECIAL OUTPUT

START/STOP TIMES

RETURN

STORM WATER
TIMED BOTTLE SETS

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