Hach-Lange Sigma SD900 Portable - Manual (Page 42)

40
Sampler operation
4.5 Start or stop a program
Use the RUN/HALT PROGRAM key to start or stop a program.
Procedure:
1. Press RUN/HALT PROGRAM to run, halt, resume or end a
sampler program.
2. Select one of the available options:
• Start: starts the currently loaded program. The status
changes to running.
• Halt: stops the program temporarily. The status changes
to halted.
• Resume: if halted, the program resumes from the point at
which it was halted. The status changes to running.
• Start over: if halted, the program starts from the beginning.
The status changes to running.
• End program: ends the currently running program. The
program status changes to complete.
Note: A program must be stopped before the program setup or system
setup menus can be modified.
4.6 Manual operation
Use manual operation to collect a grab sample, move the distributor
arm or operate the pump.
4.6.1 Collect grab samples
Grab samples can be collected to verify sample volume or to collect
samples without running a sampling program.
Procedure:
1. Press the MANUAL OPERATION key.
2. Select GRAB SAMPLE .
3. Place the intake tube into the sample water. Remove the outlet
pump tube from the fitting on the sampler and place the tube
into a sample container.
4. Enter the volume to be collected and press ENTER .
Note: The grab sample volume can only be modified if the liquid
sensor is enabled. if the liquid sensor is disabled, the grab sample
volume will reflect the volume defined using timed calibration.
5. The pump will purge the intake tube and then collect the
specified volume of sample. The pump will then purge the
intake tube.
To stop the pump at any time during the sample cycle, press
the
STOP key.