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Hach AS950 Basic Operations

Hach AS950
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3. Select an option.
Option Description
Immediately on
'Run'
The sampling program starts when RUN/HALT is pushed.
On Trigger The sampling program starts (or starts and stops) when a trigger occurs. The trigger is a
selected channel alarm or a signal from an external flow meter or third-party device that
is connected to the AUX I/O port. Refer to Start the program on a trigger (optional)
on page 15.
After Delay When RUN/HALT is pushed, the sampling program starts after the selected delay. Refer
to Table 7 for the delay options. For descriptions of all the options, refer to the expanded
user manual on the manufacturer's website.
On Schedule The sampling program starts on the selected day(s) of the week and time(s). Select a
maximum of 12 schedule intervals.
Delay—Sets the sampling program to start on the first scheduled day and time after a
selected delay. The delay is one time only. Refer to Table 7 for the delay options.
Schedule Intervals—Sets the number of schedule intervals (1 to 12). Edit Schedule
Sets the start day and time and the stop day and time for each schedule interval.
Table 7 Delay options
Type Description
None The sampling program starts after no delay.
Data and Time The sampling program starts after a set date and time.
Time Duration The sampling program starts after a set amount of time.
Flow Duration The sampling program starts after a set flow volume occurs. Select the source of the flow
measurement.
AUX-Pulse (or AUX-mA)—An external flow meter or third-party device connected to the AUX
I/O port. Flow 1 (or 2)—A sensor connected to the Sensor 1 (or 2) port. IO 1 (or IO 2)—Analog
Input IO 1 (or IO 2) of the optional IO9000 module.
Note: A flow measurement that is supplied through a sensor port or the IO9000 module is only available for
selection after it is selected to be recorded to the data log.
Start the program on a trigger (optional)
To do upset sampling, configure the sampling program to start on a trigger.
1. Push MENU.
2. Go to Programming>Sample Programming>Program Start>On Trigger.
3. Select an option.
Option Description
Setpoint Sets the sampling program to start when one or all of the selected channel alarms occur.
External AUX Sets the sampling program to start when the external flow meter or a third-party device that is
connected to the AUX I/O port sends a signal to the sampler. Refer to the flow meter
documentation to configure the signal.
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 on page 11.
Start Trigger Sets the sampling program to start when one or all of the channel alarms occur. Options: All
Alarms or Any Alarm.
English 15

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Hach AS950 Specifications

General IconGeneral
Sample FrequencyProgrammable
TypePortable
Sampling MethodVacuum Pump
Temperature ControlRefrigerated
Bottle Configuration24 x 1L bottles
Power Supply12V DC
CommunicationRS-232
Sampler TypePortable or Stationary
Vertical Lift8.2 m
Enclosure RatingIP67
Number of SamplesUp to 999
Storage Capacity24 samples
Bottle Options1L

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