Hach-Lange Sigma SD900 Portable - Manual (Page 54)

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Advanced sampling
5.3.1 Send output signal at program completion
A 12 VDC signal can be sent through pin F of the auxiliary
connector at the completion of a sampling program or when the full
bottle shut-off is activated. The signal remains on for 61 seconds.
To enable the ability to transfer sample history to an external Sigma
950 flow meter, program complete must be disabled to enable the
bottle number output. In addition, the special output must be
enabled and configured to assert after the sample cycle is
complete.
The output signal can be used for the following purposes:
• Start another sampler. Cascading samplers require a
cascading cable (Cat. No. 8757300). The slave sampler must
enable setpoint sampling and start on external trigger.
• Activate a relay or other device when the program is complete.
Procedure:
1. Select PROGRAM SETUP > MODIFY SELECTED > ADV SAMPLING
from the main menu.
2. Select PGM COMPLT O/P > ENABLE .
3. The message “Bottle number output disabled on pin F” will be
shown. The bottle number output to send sample history to a
Sigma 950 flow meter will be disabled.
4. Select BACK or ENTER to activate the output signal.
5.3.2 Send output signal with sample cycle (special output)
The special output option sends a 12 VDC signal through pin E of
the auxiliary connector during or after a sample cycle. When
program complete output is disabled, and program complete is
disabled (thereby enabling the program complete output). The
sample history will be transferred to the external Sigma 950.
There are three possible configurations:
• After each sample—four second pulse at the end of each
sample cycle. This option is used to signal an external device
that a sample cycle is complete.
• During sample intake—during the sample intake portion of the
cycle only, ignoring all purges and rinse cycles.
• During entire cycle—during the entire sample cycle including all
purge and rinse cycles.
Procedure:
1. Select PROGRAM SETUP > MODIFY SELECTED > ADV SAMPLING
from the main menu.
2. Select SPECIAL OUTPUT > ENABLE .
3. Select one of the output options:
• AFTER CYCLE —at the completion of each sample cycle.
• SAMPLE PUMPING —during sample intake only.
• ENTIRE CYCLE —during entire sample cycle.