Ion Science Hydrosteel 6000 - Manual (Page 14)

Hydrosteel 6000 MANUAL Ion Science Ltd
Page 14 of 39
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Using Hydrosteel 6000
Analyser display
As part of the start-up procedure, the analyser sequentially displays the instrument name, manufacturer, data
log details and calibration details. Thereafter a countdown is displayed until normalisation of the analyser is
complete. Note: If the analyser has been used recently, the normalisation countdown can be reduced by
pressing the O key twice.
After normalisation, three measurements are displayed, as described below.
Hydrogen flux
In normal operating mode the analyser display indicates measured hydrogen flux, or flow per unit area,
collected from a surface, in units of ‘pl/cm
2 /s’ or ‘nm/s’.
The flux units are corrected for standard temperature and pressure. That is, 1 pl/cm
2
/s = 10
-12
litres of
hydrogen at a pressure of one atmosphere, (760 mm Hg, 1014 mbar), and 20
o
C, emanating from each
square centimetre of surface per second. Flux measurements exceeding 1000 pl/cm
2
/s are displayed in units
of nl/cm
2
/s to two decimal places (1000 pl/cm
2
/s = 1 nl/cm
2
/s).
When the collector is not attached to a steel surface, a flux continues to be displayed in order to give a clear
indication of any background drift, which may affect the integrity of subsequent measurements.
Battery level indication
At the base of the display a battery icon is indicated together with the temperature in degrees Centigrade. As
the battery becomes exhausted the battery icon progressively empties, until the icon is shown in outline only
and, subsequently, it flashes.
When the battery symbol is flashing, data logging may not be possible and, although the system is still
functional, quantitative measurements of hydrogen flux are not recommended.
Temperature indication
Located at the bottom right of the display, the indicated temperature measurement is one taken from inside
the analyser, near the hydrogen sensor. During temperature changes, the displayed measurement flashes,
indicating that you can expect some temporary background signal drift as the detector re-adjusts to the
change in temperature. If you are experiencing temperature changes to the unit during operation it is highly
recommended that you use the thermally insulating leather jacket.
5
pl/cm 2 /s
24 o C LT
Probe indicator Battery life
indicator
Temperature
indicator
Flux measurement