Hach AS950 Fonctionnement page 18

4. If Setpoint is selected, select and configure each option.
Option Description
Setpoint Selects the channel alarm(s) for the trigger. The user-configured channel alarms
show. To configure more channel alarms, select Add New Alarm and refer to
Select and configure the alarms
Start Trigger Sets the sampling program to start when one or all of the channel alarms occur.
Options: All Alarms or Any Alarm.
Delay Selects the sampling program to start when the start trigger occurs after a
selected delay. Refer to
Control Sets the sampling program to start (or start and stop) when the trigger occurs.
Options: Start & Stop or Start Only.
5. If External AUX is selected, select and configure each option.
Option Description
Delay Selects the sampling program to start when the signal is sent by the flow meter or a
third-party device after a selected delay. Refer to
options.
Control Sets the sampling program to start (or start and stop) when the signal is sent by the
flow meter or third-party device. Options: Start & Stop or Start Only.
4.1.5.7 Select when the program stops
Select when the sampling program completes and sample collection stops (e.g., after a quantity of
samples are collected or after a time interval).
1. Push MENU.
2. Go to Programming>Sample Programming>Program End.
3. Select an option.
Option
None
After Samples
Date and Time
Time Duration
4.2 Calibration
4.2.1 Volume calibration
Calibrate the sample volume.
Note: Temporarily stop the sampling program before calibration. Push RUN/HALT, then select Halt Program.
4.2.1.1 Calibrate the sample volume—liquid detector enabled
Calibrate the sample volume with the liquid detector enabled to adjust sample volumes slightly.
1. Push MENU.
2. Select Hardware Setup>Liquid Detect>Status. Make sure that the liquid detector is enabled.
3. Put the intake tubing into the sample water or tap water.
Note: Use the sample water for best accuracy.
4. For the AWRS sampler, put a graduated cylinder under the distributor outlet or composite tube
support inside the AWRS cabinet.
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Table 7
Description
The sampling program operates continuously.
The sampling program stops after a set number of samples are collected.
The sampling program stops at a set date and time.
The sampling program stops after a number of hours (1 to 999 hours).
on page 12.
on page 17 for the delay options.
Table 7 on page 17 for the delay