Hach ORBISPHERE 3655 Manuel D'utilisation Simplifié page 13

sensor calibration mode. You may also lock out the instrument's CAL button, or for calibration
using a span gas, you may enter the span gas percentage.
• The Troubleshooting menu includes a series of tests, permits the setting of the clock, and
enables a barometric pressure calibration routine.
• The Help menu gives access to the Help file and allows the identification of the
WinLog97 program.
5.2 Instrument - PC connection
For the hardware connection of the instrument to a PC, see
The Configuration, Serial port menu lets you choose one of four serial communication ports.
Usually, COM1 is used to connect to a mouse, so try COM2 first. You may find that a separate SetUp
program supplied with your PC is necessary to activate this port. Click on OK to activate the selected
port. If the port you have selected here is adequate, the WinLog97 program will return to the main
menu. Otherwise, you will see an RS232 ERRORS message advising you to select another port.
5.3 Reviewing instrument configuration
To review if the analyzer is set up as expected, choose the Configuration, Configuration view
command.
You may change a number of these settings using the WinLog97 program. The modifiable settings,
and information relating to these settings are listed in the next section, Configuring the instrument.
However, should you see any unexpected items listed on your screen which you are unable to
correct, please contact your Hach Lange representative.
5.4 Configuring the instrument
The analyzer can be readily configured for your application using the following commands in the
Configuration menu. The instrument must be connected to your PC in order to change its
configuration.
5.4.1 Automatic data acquisition - setting sampling intervals
The instrument can perform as a standalone data acquisition device, automatically recording gas
measurements with the date and time, and storing up to 500 of these values. Choosing the
WinLog97 program's Configuration, Sampling Rate menu lets you select time intervals (acquisition
rate) for this storage capability.
Use the slide bar to view and select a sampling rate, from 15 seconds to 1 hour. The selected rate is
shown in the Acquisition rate window. Click OK to save this rate. Once your choice is made, the
instrument can be used independently of the WinLog97 program for data acquisition, as described in
Automatic data acquisition
Note: The Acquisition rate set via this menu is independent from the monitoring chart updating rate described in
Monitoring measurements in real-time
acquisition, while the chart updating rate is used only for displaying real-time results via the monitoring chart.
5.4.2 Membrane selection
You may find it necessary to use a different type of membrane for different applications. Naturally,
with any membrane change, you will need to re-calibrate (see
should also consider the changes in required flow rates and response times, which are specified in
the accompanying Sensor Manual.
To re-configure the analyzer, choose Configuration, Membrane to bring up the box which reveals
the membrane models available. Choose OK when the desired membrane is selected.
5.4.3 Selecting type of calibration
5.4.3.1 Select from the PC
You can use the Configuration, Calibration mode command to select how the sensor is to be
calibrated.
Note: Only the calibration modes applicable to your sensor can be selected. Others will be grayed out.
on page 9.
on page 11. The sampling rate menu applies only to automatic data
Instrument - PC connection
Sensor calibration on page 15). You
on page 6.
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