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3654 Portable H2/N2 Analyzer - Operating Instructions 21 of 66
Operator Manual
ORBISPHERE
To end automatic storage, put the instrument into standby (by pressing the POWER key)
while it is in normal measurement mode and not while it is in the process of automatically
storing data. 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 WIN3654 program, you will get a Windows Checksum Error message,
and you will not be able to view the measurement data. If this happens, go back to the
instrument and manually log one more value (described in “Manual Data Acquisition” ).
You can then download your original set of values to your PC.
2.3.2 Manual Data Acquisition
Note:
You cannot store measurement data manually if the instrument has already been set up
to store the data automatically.
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.
Note:
If you label a sample number the same as a previously stored measurement value, the
new measurement value overwrites the previously stored value.
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 (e.g. 8.56 in the flow diagram)
5) The [---] message is displayed as this
measurement value is stored
6) Repeat the above steps to store
additional measurements.