Kahn HygroPort I.S., Руководство пользователя

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HygroPort I.S. User’s Manual
The look-up table is divided into three columns. The values in the first column
POINT
represent the thirteen nominal calibration points, spread at 10°C intervals over the
instruments operating range of -100 to +20°C (-148 to +68°F
)
. These points cannot
be edited.
The second column of the table represents the value of the reference (
REF
) dewpoint
standard applied at that particular point and the value in the column immediately to the
right represents the reading that the HygroPort I.S. was showing at the
corresponding
REF
level input.
The values in both the
REF
and
HygroPort I.S.
values can be edited by means of the
scroll up and scroll down keys. The scroll right and scroll left keys provide the means of
switching between corresponding table columns.
To edit a set of look-up table values, proceed as follows (Figure 7.3 shows the key
sequence):
1. Initially, upon entering the look-up table,
the
REF
column is highlighted. From the
calibration run (see Table 6.1) enter the
exact value of the
REF
dewpoint supplied
to the instrument
(100.1
) by using the
scroll up and scroll down keys.
2. To change a single point only: use
the scroll right key (press 5 times) to
highlight the corresponding HygroPort
I.S. row entry and use the scroll up and
scroll down keys to edit this value to the

value recorded during the calibration
run (
99.8
). Alternatively, if all
values are to be edited, enter all
five
REF
points and then enter all
the corresponding HygroPort I.S.
points.
3. Repeat steps 1 and 2 above for all the
table entries that need to be made.
4. After the last entry has been made,
press the Enter key.
5. To accept the changes press the scroll right
key or, to return to the Calibration Menu
screen without making any changes,
press the scroll left key.
Issue 6, December 2019 46 Kahn Instruments
CALIBRATION
CALIBRATION
CALIBRATION
CALIBRATION
POINT REF
-100 -100.0
-90 -90.0
-80 -80.0
-70 -70.0
-60 -60.0
Adjust
value
MDM300
-100.0
-90.0
-80.0
-70.0
-60.0
MDM300
-100.0
-90.0
-80.0
-70.0
-60.0
x5
MDM300
-100.0
-90.0
-80.0
-70.0
-60.0
POINT
-100
-90
-80
-70
-60
POINT
-100
-90
-80
-70
-60
POINT
-100
-90
-80
-70
-60
REF
-100.1
-90.0
-80.0
-70.0
-60.0
REF
-100.1
-90.0
-80.0
-70.0
-60.0
Adjust
value
REF MDM300
-100.1 -99.8
-90.0 -90.0
-80.0 -80.0
-70.0 -70.0
-60.0 -60.0
Press

To Save Changes
Press

To Exit
Figure 7.3 Edit HygroPort I.S. look-up table