HD31
- 98 -
V1.6
15.
Remove the probe (with thread ring nut, if any) from the saturated solution container and
close the container.
16.
Unscrew the M12X1 thread ring nut, if any, from the probe and reposition the sensor protec-
tion cover.
Single-point calibration procedure (75%, 33%, 11% TUNE-UP options):
By selecting 75% TUNE-UP, 33% TUNE-UP and 11% TUNE-UP options the calibration of the rela-
tive humidity sensor is performed only in the selected point. The procedure is entirely similar to
the information given about complete calibration, with the difference that the instrument exits
calibration after confirming the point, instead of moving to the next point:
1.
Unscrew the protection cover of the probe and, if necessary, tighten the M12×1 thread ring
nut (the thread ring nut is necessary only for
∅
14 mm probes).
Avoid any contact of the sensitive element with hands or any other object or liquids.
If mois-
ture is inside the measurement chamber, dry it with clean absorbent paper
.
2.
Unscrew the closure cap of the saturated solution. Tighten the thread ring nut with probe to
the saturated solution container and wait for at least 30 minutes.
3.
In the instrument, select
75% TUNE-UP
,
33% TUNE-UP
or
11% TUNE-UP
calibration op-
tions according to the point to be calibrated, then press the
F3
key (
OK
command) to con-
firm.
4.
The instrument suggests the calibration point (
SETPOINT
line) and displays the temperature
and the relative humidity measured by the probe (
MEASURE
line).
5.
Using
S
and
T
, set the calibration point (
SETPOINT
line) to the value of the saturated solu-
tion at the measured temperature (see the tables shown in the complete calibration proce-
dure).
6.
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 continue
(or press F1 to select NO and exit).
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) or press
ESC
to exit calibration.
7.
Remove the probe (with thread ring nut, if any) from the saturated solution container and
close the container.
8.
Unscrew the M12X1 thread ring nut, if any, from the probe and reposition the sensor protect-
ing cover.
Summary of Contents for HD31
Page 6: ...HD31 6 V1 6 2 DESCRIPTION Fig 2 1 instrument description...
Page 149: ...HD31 149 V1 6 NOTES...
Page 150: ...HD31 150 V1 6 NOTES...
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