DeltaOHM HD31, Руководство по эксплуатации

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HD31
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V1.6
Fig. 13.3.6: calibration point confirmation
During the countdown you can exit the procedure without calibrating the point by pressing
ESC .
In alternative to the F3 key ( OK command) calibration can be confirmed by pressing the F1
key ( SET command). Pressing the SET command keeps the instrument in the current
screen, instead of moving immediately to the next point. This allows confirmation of the
performed correction before continuing. After pressing the SET command, you need to se-
lect the OK command (F3 key) to move to the next point, or press
ESC to exit calibration.
7. Remove the probe (with thread ring, if any) from the saturated solution container and close
the container.
8. Unscrew the closing cap of the 33%RH saturated solution. Tighten the thread ring nut with
probe to the saturated solution container and wait at least 30 minutes.
9. The instrument suggests that the second calibration point is set to 33%RH. Using
S
and
T
,
set the calibration point to the saturated solution value at the measured temperature (see
the table below).
TAB. 13.3.2: saturated solution at 33%RH
Temperature (°C) Solution 33%RH
15 33.3
20 33.0
25 32.7
30 32.4
Note : press ESC if you want to exit the procedure without calibrating the point.
10. When the reading is stable, press F3 ( OK command) to confirm. The instrument displays a
countdown ( ACQUIRING ) of a few seconds; at the end, a message is shown reminding that
the operation will change the calibration data of the probe, select YES ( F3 key) to con-
tinue (or press F1 to select NO and exit), the instrument moves to the next calibration
point.
11. Remove the probe (with thread ring nut, if any) from the saturated solution container and
close the container.
12. Unscrew the closing cap of the 11%RH saturated solution. Tighten the thread ring nut with
probe to the saturated solution container and wait at least 30 minutes.
13. The instrument suggests that the third calibration point is set to 11%RH. Using
S
and
T
,
set the calibration point at 11.3 %RH (solution value between 15 and 30 °C).
Note : press ESC if you want to exit the procedure without calibrating the point.
14. When the reading is stable, press F3 ( OK command) to confirm. The instrument displays a
countdown (ACQUIRING) of a few seconds; at the end, a message is shown reminding that
the operation will change the calibration data of the probe, select YES ( F3 key) to con-
tinue (or press F1 to select NO and exit), the instrument exits calibration.