Hach ORBISPHERE 3650 ATEX Manuel D'utilisation De Base page 14

6.4.1 Automatic data acquisition
Note: When the instrument is used to automatically store measurement data, all buttons except the POWER key
are disabled. If enough time elapses to store all 500 values, the instrument will return to normal measurement mode
and the buttons re-enabled.
Before starting automatic measurement storage, first select the sampling rate desired using the
Sampling Rate menu of the WinLog97 program (see
intervals on page 18).
1. Switch the instrument OFF (by pressing the POWER key).
2. Then hold down the STO button while switching the instrument back ON. The LCD displays the
message Sto for about one second.
3. Normal gas concentration measurements are displayed for about two minutes.
4. After two minutes the instrument displays the sample number (starting at 000), then the gas
concentration measurement value followed by [- - -] to indicate the measurement is being stored.
5. This storage sequence repeats automatically, at the rate specified by the WinLog97 program
Sampling Rate menu. Values are stored sequentially in sample numbers 000 through 499.
Note: If you have not cleared previously stored values, the storage sequence automatically overwrites the older
values, as they are stored.
6. To end automatic storage, switch the instrument OFF (by pressing the POWER key) while it is in
normal measurement mode and not while it is in the process of automatically storing data.
7. Switching ON again without holding down the STO button returns the instrument to measurement
mode.
Note: If you accidentally interrupt the automatic data storage by switching off the instrument while it is in the
process of storing a value, and you then attempt to download the stored values by the WinLog97 program, you
will get a Windows Checksum Error message, and you will not be able to view the measurement data. If this
happens, then go back to the instrument and manually log one more value (as described in
acquisition on page 14). You can then download your original set of values to your PC.
6.4.2 Manual data acquisition
Note: You cannot store measurement data manually if the instrument has already been set up to store the data
automatically.
1. For the first measurement you wish to store, press the STO button once to display a sample
number. The default sample number is 000 (for first time access), or the last used memory
position where data was stored, incremented by a value of 1.
2. You can increase or decrease this number by pressing the Up/Down Arrow buttons within three
seconds.
3. Should you decide at this point, not to store this particular measurement, just wait five seconds
and the display returns to measurement mode. You may also exit this routine by pressing the
MEAS button.
4. Press STO a second time, within five seconds of the first. The instrument then displays a brief
clearing [- - -] message, followed by the gas concentration measurement value for about three
seconds
5. The [- - -] message is displayed as this measurement value is stored
6. Repeat the above steps to store additional measurements.
If you stored the first value as sample 001, the instrument automatically increases the next
storage location, and labels it sample 002. You can increase or decrease this number by pressing
the Up/Down Arrow buttons. If you label a sample number the same as a previously stored
measurement value, the new measurement value overwrites the previously stored value.
6.4.3 Viewing stored measurements
1. Switch the instrument OFF (by pressing the POWER key).
2. Hold down the Up Arrow button while switching the instrument back ON. The LCD displays a
sample location number.
14 English
Automatic data acquisition - setting sampling
Manual data