HygroPort I.S. User’s Manual
4.3
Operation Guide
Operating the HygroPort I.S at atmospheric pressure:
1.
Connect the HygroPort I.S. to the sample gas stream, typically as shown in
Section 3.5.
2.
Use the inlet flow control valve to adjust the flow rate through the instrument
to between 0.4 and 1.0 scfh (0.2 and 0.5 Nl/min).
3.
Turn the instrument on using the rear mounted ON/OFF switch (item 3 in
Figure
2.1). The instrument display will now illuminate, initially showing the start-up
screen, followed by the initialization screen (see
Figure 4.2).
4.
A 1 minute initialization period commences automatically, after which the screen
will show a countdown of the remaining initialization time. During this period
the sensor is heated to increase the mobility of water molecules and accelerate
equilibrium with the passing sample gas. The status display will read
Initializing internal sensor.
5.
The instrument will then begin Measurement mode. During the first few
minutes of Measurement mode it is normal to see the displayed moisture
value drop rapidly below (undershoot) the actual moisture value, before
returning to a stable reading.
6.
The instrument display will show an initial measured value and provide a visual
indication that the sensor is, at first, responding to the sample (status display
shows
Measurement in Progress
), and a short time later, is measuring the
true moisture value (status display shows
Measurement OK
).
7.
Once the instrument’s status display indicates
Measurement OK,
the displayed
value represents the true measured value of the sample.
Operating the HygroPort I.S. at sample pressure:
1.
Connect the HygroPort I.S. to the sample gas stream, typically as shown in
Section 3.5.
2.
Insure that the battery has been fully charged (refer to Section 3.7).
3.
Use the outlet flow control valve to adjust the flow rate through the
instrument to between 0.4 and 1.0 scfh (0.2 and 0.5 Nl/min).
4.
Turn the instrument on using the rear mounted ON/OFF switch (item 3 in
Figure
2.1). The instrument display will now illuminate, initially showing the start-up
screen, followed by the initialization screen (see
Figure 4.2).
Issue 6, December 2019
33
Kahn Instruments
Summary of Contents for HygroPort I.S.
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