• The
Monitoring
menu creates a running chart of real-time measurements. Refer to
on page 13. These values can also be saved to the Windows
Clipboard.
• The
Configuration
menu lets you see how your system has been configured for your application.
You may use this menu to change the configuration parameters should your application needs
change.
• The
Troubleshooting
menu includes a series of tests, allows you to set the clock, and enables a
barometric pressure calibration routine.
• The
Help
menu gives access to the Help file and allows the identification of the Hach 3658
program.
Analyzer - PC connection
The
Configuration
,
Serial port
menu lets you choose one of four serial communication ports.
Click on
OK
to activate the selected port. If the port you have selected here is available, the Hach
3658 program will return to the main menu. Otherwise, you will see an
RS232 ERRORS
message
advising you to select another port.
Reviewing instrument configuration
To review if the analyzer is set up as expected, choose the
Configuration
,
Configuration view
command.
Some of the parameters listed, can be changed by using the Hach 3658 program. However, should
you see any unexpected items listed on your screen which you cannot correct, please contact your
Hach Lange representative.
Configuring the instrument
The ORBISPHERE 3658 analyzer can be readily configured for your application using the following
commands in the
Configuration
menu. The instrument must be connected to your PC and powered
on, in order to change any configuration parameters.
Gas measurement phase
The instrument can measure CO
2
in either a liquid or a gaseous sample, but you must select which
gas phase to use. Choosing the Hach 3658 program's
Configuration
,
Gas Phase
menu lets you
select the gas measurement phase.
The gas measurement phase can also be selected from the instrument keyboard as follows:
1.
Switch the instrument power
OFF
.
2.
Switch the instrument on by holding down the
CAL
button and then pressing the
POWER
button
while still pressing the
CAL
button.
3.
The instrument display will first show
PHA
before switching to either
dIS
for dissolved or
gAS
for
gaseous measurements.
4.
Use the
Up/Down Arrow
buttons to change the gas phase to your choice.
5.
Press the
MEAS
button to save the selected gas measurement phase. The instrument then goes
to measurement mode.
Measurement units
Choose the
Configuration
,
Units
menu to select gas measurement units, temperature
measurement units, and the liquid medium in which you are measuring.
Using this dialog box, you can select:
• The
Gas units
in which gas concentrations are to be displayed
• For dissolved measurements: g/kg, % (by weight), V/V, cc/kg, mL/L, ppm/ppb, ppm or
mg/100mL
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