Step 13 - setpoint sampling – Hach 900 MAX User Manual
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Advanced Sampling
8990startup.fm
Section 3
Step 12 - Program Complete Output
Program Complete Output sends a +12 V dc signal out Pin F of the Auxiliary
Receptacle at the completion of the sampling program. This signal is also sent
when a Full Bottle condition causes the program to complete. The Program
Complete signal remains on (+12 V dc) for 61 seconds and then turns
back off (0 V dc).
Program Complete Output is used for the following purposes:
•
Multiple Sampler Operation. Samplers are arranged in a “Cascade”
control where the first sampler signals a second sampler to start its
program when the first sampler’s program is complete. This feature
requires the second sampler to be programmed for external
start operation.
•
To interface to a PC to signal the end of the sampling program.
•
To interface to a relay that trips a signal light in a control room to indicate
that sampling is finished and samples are ready to be picked up.
12-A. From the Advanced Sampling menu highlight Program Complete using
the
UP
and
DOWN
keys. Press
SELECT
to continue.
12-B. Enable or Disable Program Complete using the
CHANGE CHOICE
key.
12-C. Press
ACCEPT
to continue to Set Point Sampling.
Step 13 - Setpoint Sampling
Setpoint sampling allows the control of an automatic liquid sampler from one
of up to 14 sources. Setpoint sampling defines a set of limits that inhibit
sampling until an upset condition occurs, causing the limits to exceed.
Sampling is enabled only when the waste stream falls outside the setpoints.
13-A. Highlight Setpoint Sampling using the
UP
and
DOWN
keys on the
Advanced Sampling Menu. Press
SELECT
.
13-B. Enable or Disable Setpoint Sampling using the
CHANGE CHOICE
key.
Press
ACCEPT
to continue.
11:00 AM 21 - APR - 01
ADVANCED SAMPLING
SELECT
PGM CMPLT OUTPUT
RETURN
SETPOINT SAMPLING
SPECIAL OUTPUTS
11:00 AM 21 - APR - 01
ADVANCED SAMPLING
SELECT
PGM CMPLT OUTPUT
SETPOINT SAMPLING
RETURN
SPECIAL OUTPUTS
START/STOP TIMES