Kett HB-300 User manual

Operating Manual
Thank you for purchasing this product.
Please read the operating manual carefully and use this product properly.
Universal Moisture Tester
HB-300

1. Universal Moisture Tester HB-300.................................................................................................................. 4
2. Features........................................................................................................................................................... 5
3. Specications.................................................................................................................................................. 6
4. Nomenclature..................................................................................................................................................7
5. Display screen................................................................................................................................................. 8
6. Operation panel keys ......................................................................................................................................9
7. Flow chart for measurement ......................................................................................................................... 10
8. Preparation for measurement....................................................................................................................... 11
9. How to make the calibration ......................................................................................................................... 13
9-1. What is the calibration?....................................................................................................................... 13
9-2. How to produce the calibration curve ................................................................................................ 14
9-3. How to enter the calibration (measuring 5 samples).......................................................................... 16
9-4. How to input sample or calibration name........................................................................................... 24
10. How to measure ..........................................................................................................................................25
10-1. Measurement ..................................................................................................................................... 25
10-2. Display of the average.......................................................................................................................28
10-3. How to set continuous measurement mode...........................................................................................29
10-4. How to proceed for bias correction..................................................................................................30
10-5. How to set the alarm ......................................................................................................................... 31
10-6. Setting for printer output...................................................................................................................32
10-7. Data storage.......................................................................................................................................33
11. Function mode.............................................................................................................................................34
11-1. Display of input moisture values when preparing a calibration curve..............................................34
11-2. Erasing a calibration curve ................................................................................................................35
11-3. Printer output of stored data .............................................................................................................35
11-4. Batch erasure of stored data.............................................................................................................36
11-5. Date and time display ........................................................................................................................36
12. Error display.................................................................................................................................................39
Contents

4
Most conventional moisture testers utilizing the electrical measurement method are designed for one
specific application as their product names suggest, such as Wood Moisture tester or Grain Moisture
tester. This is because their calibrations are pre-set to measure a certain subject. They are handy because
they are ready to be used immediately after purchase, but naturally you can't expect accuracy measuring
other subjects. You have to have many different moisture testers to measure a range of subjects. For
example, for processed food you may not have been able to nd a suitable moisture tester and had to rely
on the time consuming Dry Process Method to know the moisture content. The market was waiting for one
handy electric moisture tester able to measure various kinds of samples in dierent conditions and shapes.
HB-300 can measure the moisture of many kinds of samples in various conditions and shapes such as
solid, powder, grains, paste, sheet, etc. You can make the calibration for your samples relatively easily
and register it to the tester. Many optional sensor probes are available for the HB-300 which further
amplify the range of measurement subjects.
• Thistesterallowsacalibrationofelectricresistancetomoisturecontentsothatsamplescontaininghigh
moistureormaterialsthataectelectricresistance,suchasmetal,powderorsalt,maystillbemeasured
butinaccurately.
• Youneed tomakeand set the calibrationfor your measurement subjectin order todisplaythemoisture
content%onthetesterdirectly.
1.UniversalMoistureTesterHB-300

5
lBy setting an unique calibration for each material, as required, the HB-300 can measure various kinds
of materials.
lEasy operations to make calibrations.
lUp to 10 calibrations can be registered in the instrument
lStandard probe for constant pressure measurement is included. Many other optional probes are
available.
lUpper limit alarm installed.
lMoisture content bias correction can be set.
2.Features

6
3.Specications
Measurement method :Electric resistance method
Measurement subjects : Solid, powder, grain, paste or sheet materials except samples containing electrolyte
Indicating range : 1 ~ 99%
Measurement range :Electric resistance............ 10KΩ ~ 900MΩ
Water content value......... Depends on the sample
Measurement accuracy : Depends on the sample
Display :Digital (LCD)
Resolution :0.1%
Measurement temperature range : 0 ~ 40°C
Function :Calibration curve memory (10 types), Display of average, Automatic power o (approx. in 5
minutes), Upper alarm setting (01 ~ 99% and o), Moisture value bias correction (–9.9 ~ 9.9%)
Power : 1.5 V batteries (AA alkaline) x 6
Dimension : 110 mm (W) x 210mm (D) x 50 mm (H)
Weight 0.5kg
Accessories Standard probe, Shoulder strap, Carrying case, 1.5 V batteries (AA alkaline) x 6, Operat-
ing manual, Fanction mode list
Options Printer VZ-390, Printer cable VZC70

7
[Instrumentbody] [Accessory]
Connector
Battery compartment cover
Standard probe
Display screen
Operation
panel
4.Nomenclature
Standard probe
Operating manual
1.5 V batteries
(AA alkaline) x 6
Carrying caseShoulder strap
Fanction mode list

8
• Cof"Cdisplay"standsforCalibration.(RefertoPage23,proceduree.)
Calibration number
Battery information
Measurement times
*C display (On/O)
Alarm Setting
Moisture value
Bar graph
5.Displayscreen

9
• 0~9keysforenteringnumericalvalues.Somenumerickeyshaveotherfunctionsaswell.
[Operationpanel]
6.Operationpanelkeys
Key Function
To turn the power on /o.
To apply bias correction.
To select calibration #.
To calculate average.
To enter the numerical values on display.
To clear miss types.
To set the upper alarm.
To set the calibration.
To measure the sample.
To switch from/to continuous measurement mode and
single measurement mode.

10
Whichvalue?
Realvaluewanted
Relativelyrough
referencevalue
wouldbeO.K
Calibrationhas
beenset
Calibrationnotset Producecalibration Register
SelectCalibration#
Criterioncalibration
SelectCalibration
curve#00
Measurement
Proceed to Page 11 "8 Preparation for
measurement" and Page 25 "10. How to measure"
Proceed to Page 11 "8 Preparation
for measurement" and Page 13 "9.
How to make the calibration"
Proceed to Page 11 "8 Preparation
for measurement" and Page 25
"10. How to measure"
7.Flowchartformeasurement

11
(1) Install the six AA batteries in the battery compartment on
the back of the instrument:
Remove the battery compartment cover and install the
batteries. Take care not to reverse the polarity ( & ) of
the batteries. Replace the cover.
• Whenthebatteriesareworn, willblinkonthedisplayscreen.
Changeallbatteriesatthesametime.
(2) Set the probe either to "Constant" or to "Fix" according to
the sample.
Turn the base of the probe clockwise till it clicks to set it to
"Fix". Turn anti-clockwise to release it back to "Constant".
• The pr ob e is s et a t "Co ns tant" at the t ime of shipment. At
"Constant" the grip of the will slide so as to give a constant
pressureonthesample.
Fig.1
GTurn here clockwise to
set the probe to "Fix"
8.Preparationformeasurement

12
(3) Firmly connect the probe connector to the instrument body
and turn the lock ring.
(4) Prepare the sample to be measured, leave it to allow
the sample temperature to even and equalize with the
instrument's temperature.
• Ifthesampletemperatureatthispointisdifferentfromthe
samplesyouwishtomeasurelater,itmayresultinaninaccurate
measurement. While making the calibration cur ve, take care
thatthesampletemperatureisevenandthesameasatthe
measurementsitewhereyouwillbemeasuring.
1Turn the lock ring.
2 Insert rmly.
Fig.2

13
9-1.Whatisthecalibration?
Generally, calibration of moisture testers measuring electric resistance show correlations between the
actual moisture and the electric resistance of each sample. The actual moisture is to be measured by the
drying process or other processes beforehand. The correlation
can be displayed in a form of numerical expression, graph, list
and etc. The criterion calibration set in HB-300 is a numeric
expression of correlation of moisture and electric resistance.
It was obtained by measuring electric resistance of a timber
with a 4needle probe and its actual moisture measured by the
drying process.
At the time of shipment this criterion calibration is set on all
calibrations #00~10. You can register different calibrations
of different samples on #01~10 respectively. However the
criterion calibration on #00 can not be changed. To use HB-
300 as a direct moisture reader, it is necessary to make and
register a specic calibration for the sample by measuring the
actual moisture, using the standard method or others, and to
correlate it with the measurement results acquired with the
criteria calibration of HB-300.
Standardwatercontent
HB-300measurementresults
%
[Calibrationsample]
%
9.Howtomakethecalibration

14
9-2.Howtoproducethecalibrationcurve
• Use the same probe that will be used to measure the sample later.
Donotchangethesettingof"Constant"or"Fix"ifusingthestandard
probe.Usingdierentprobesordierentwaysofmeasurementsuch
asangleoftheprobeanddepthmayaectaccuracy.
• While making a calibration, tr y to make the environment of
measurementasequalaspossibletotheenvironmentatthesite
whereyouwillbeusingtheinstrumentlater.Especiallydierence
oftemperaturewillaectaccuracy.
• Itisnecessaryto makemultiplecalibrations andregisterthem
respectively if seasonal temperature changes of the sample are
expected.
 (Example)
(1) Prepare the sample
Prepare 2~5 samples with dierent moisture. Include both
the upper and lower limits of moisture content that your
samples to be measured might contain. For instance, if you
want to measure 6~40% moisture, be sure to include under
6% and over 40% moisture samples in all the 2~5 samples.
Temp.at
measurement
Temp.while
producingcalibration
Calibration#
to register
15~20°C 17°C 01
20~25°C 22°C 02

15
(2) Measure the samples with the criterion calibration of HB-
300 (in #00). Also measure the actual moisture value of
the same samples with the standard method or the drying
process using Infrared Moisture Determination Balance.
• For d et ailed d escr ipt ion on how to measure, refer to "10-1
Measurement"onpage25.
• If themeasurementresults show much uctuation, measure the
samples by the continuous measurement mode (refer to "10-
3 How to set Continuous Measurement Mode" on page 29) or
calculatetheaverageofthemeasurementresults.
[Example:Measuring5samples]
uMeasurement1
uMeasurement2
uMeasurement3
uMeasurement4
uMeasurement5
HB-300measurement
7.3%
Standardprocess
5.4%
Sample1
HB-300measurement
12.5%
Standardprocess
22.0%
Standardprocess
32.0%
Standardprocess
40.0%
Standardprocess
46.0%
Sample5
Sample4
Sample3
Sample2
HB-300measurement
20.0%
HB-300measurement
32.5%
HB-300measurement
35.7%

16
(3) Make a note of the measurement result acquired with the
criteria calibration (#00) as shown in Table 1 on the right.
Use a photocopy of the table format on the last page of
this manual.
• Fillintheliststartingfromthesmallerresultsrst.
9-3.Howtoenterthecalibration(measuring5samples)
(1) This description illustrates how to enter the results
acquired from #00 into #02 for example.
• Enter with the numeric keys. Add "0" if you are entering a one-
digitnumber.
 [Example]Entering9.9%
  Pressthekeyas HH
• Toclearanerror,completellingall3digits---anynumberwilldo-
--andpress keytodeleteandre-enter.
• Whenenteringthecalibrationcurve,startwith
theresult*1andfollowthearrowsshownhere
tollthetable.
Table1
uCalibration#
uSamplename
HB-300 results
(with#00
calibration)
Actualmoisture
content
(Standardmethod)
Sample 17.3% 5.4%
Sample 212.5% 22.0%
Sample 320.0% 32.0%
Sample 432.5% 40.0%
Sample 535.7% 46.0%

17
Step Key Display Description
1
Press the key to turn the power on. The LCD
will blink for about 3 seconds.
2
Displays [Calibration #], [TIMES] and [%]
3
[Selectforcalibration#] Press the key to enter calibration # selection
mode. The calibration # will blink. Enter “02” for
instance.
4
Press the key, the 1st digit will blink. Next,
press the key. The display will be “02”. Now
you have selected Calibration #2.

18
Step Key Display Description
5
[Enteringthe
Calibrationcurve]
Enter the results of Table 1 from Sample #1 with the HB-
300 results rst and the standard process next. Press
the key to open Calibration entering mode.
6
Enter measurement results of sample #1. Press the
, and key to enter 07.3%
for instance.
7
Press the key, the display will change to [STD]
from [HB3].
• [HB3] stands for HB-300 measurement result and
[STD]forstandardmethodprocessresulttoenter.
8
Press the , and key to
enter 05.4% for instance.

19
Step Key Display Description
9
Press the key, the display will change to “2
TIMES” from “1 TIMES”. Enter sample #2 results.
0
Press the , and key for
12.5%.
!
Press the key, the display will change to [STD]
from [HB3].
@
Press the , and key for
22.0% to enter.

20
Step Key Display Description
#
Press the , the display will change to “3
TIMES” from “2 TIMES”. Enter sample #3 results.
$
Press the , and key for
20.0% to enter.
%
Press the key, the display will change to [STD]
from [HB3].
^
Press the , and for 32.0%
to enter.