Kett HB-600 User manual

Operating Manual
Thank you for purchasing this product.
Please read the operating manual carefully and use this product properly.
Raw Cashew Moisture Tester
HB-600

Safety Precautions
If the safety precautions for the raw cashew moisture tester are not observed, injuries or damage to property
may result. The utmost care has been given to the safety of the product, however take care to read the
precautions in this operating manual for proper handling.
■Be sure to carefully follow all safety precautions.
Carefully read the operating manual.
■Do not use the unit if it is not functioning properly.
Immediately contact our service representative if the unit malfunctions or does not operate properly.

1. Features........................................................................................................4
2. Specications ...............................................................................................5
3. Part names....................................................................................................6
4. Display ..........................................................................................................7
5. Description of Main Unit Keys (control panel) ..............................................8
6. Before Measuring .........................................................................................9
7. Directions......................................................................................................10
7-1. Measurement.......................................................................................10
7-2. Average display ...................................................................................13
7-3. Continuous measurement mode setting .............................................14
7-4. Moisture Content Value Correction .....................................................15
7-5. Setting the Alarm.................................................................................16
8. Making a user calibration curve....................................................................17
9. Warnings and Errors .....................................................................................20
Contents

4
This unit is a raw cashew moisture tester that applies electric resistance of an object to be measured.
Only putting the bar sensor into raw cashew displays their moisture content (%). This moisture tester
needs only simple operation for quick measurement without selecting an operator or measurement
environment.
1. Features
● Autopowerofunction
If no measurement is made or key is operated for approximately 5 minutes, the power is automatically
shutoandavoidswastingthebatteries.
● Upperlimitsettingfunction
Setting any moisture value enables a buzzer to sound when a measured moisture value exceeds the
set moisture value.
● Abletocompensateformoisturevalues
A moisture value can be corrected in the range from -9.9 to +9.9%.
● Upto14typesofuseroriginalcalibrationcurvesregistrable
In order to support various conditions, user-originated calibration curves can be registered under
numbers from 02 to 15.

5
2.Specications
Measurement method :Electrical resistance
Applications : Raw cashew nuts (Cashew nuts with shell)
Measurement range :7-30%
Repeatability :1.8%
Display : Digital (LCD, minimum displayed digit is 0.1%)
Operating Temperature :Operatingtemperature:0to40℃(nocondensation)
Functions :Upper limit alarm setting (7 to 30% and OFF), Moisture value bias adjustment (-9.9 to
9.9%), Auto power off (automatically turned off in approx. 5 minutes), Average value
display, Continuous measurement mode, Calibration curve memory function (14 types)
Power supply : 1.5 V batteries (AA alkaline) x6
Power consumption :0.54W
Dimensions : 110 (W) x 210 (D) x 50 (H) mm
Mass :0.5kg
Accessories : Bar sensor (PU-360), Shoulder strap, 1.5 V batteries (AA alkaline) x6, Operating manual

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<Main unit> <Accessories>
Connector
Display
Control panel
Battery cover (back)
Bar sensor (PU-360)
Operating Manual1.5 V batteries (AA alkaline) x6
Shoulder strap
3.Partnames

7
Calibration curve number
Battery indicator
Number of measuring
Calibration curve name
Set value for the alarm
Moisture value
Bar graph
4.Display

8
*The numerical keys from 0 to 9 are used for number input. Some keys combine numerical input and other
functions.functions.
<Control panel>
5.DescriptionofMainUnitKeys(controlpanel)
Key Functions
Turns the power “ON” and “OFF”.
Adjusts a moisture value bias.
Selects a sample number.
Averages measured values.
Enters a minus correction value.
Activates an alarm.
Enters a calibration curve and a value.
Conducts measurement.
Changes the current mode to the continuous
measurement mode.

9
(1) The unit is powered by six 1.5 V batteries (AA, alkaline). Remove the
rear battery cover, place the batteries into the compartment taking
care to correctly orient the positive "+" and negative "–" terminals.
Then attach the battery cover.
*  is displayed when the batteries become low. Replace all six with
newbatteries.
(2) Plug the connector of the bar sensor into the main unit securely, and
tighten the lock ring to secure the connection.
* At th is m oment , dir ec t the si lve r in de nt ation to t he f ro nt s id e, or
measuredvaluesmaybeaected.
(3) Prepare a sample to be measured, and allow the sample to equilibrate
to the same temperature as this unit.
*Errors may occur when there is a large difference in the temperature
bet ween th e sa mp le and t his unit. To make mo re accur at e
measurements,allowthetemperatureofasampletoequilibratetothat
of this unit.
(1) Direct the silver indentation to the front
side and securely insert the connector
(2)Tighten the lock ring
6. Before Measuring

10
7-1. Measurement
(1) Press the key to turn on the power. All elements of the LCD
will be displayed for about 3 seconds. Subsequently, "calibration curve
name," and "%" will be displayed.
* At this time, if the display shows something other than the above, this
unitmaybeintheabnormalstate.Referto“9.WarningsandErrors"on
page 20.
(2) Select the number of the calibration curve to be measured. This
instrument has only one pre-installed calibration curve, but this
function is required when a user calibration curve is created.
 <CalibrationcurveNo.01:Forthepre-installedcalibrationcurve>
Successively press keys in the order of →→.
 <CalibrationcurveNo.02:Forusercalibrations>
Successively press keys in the order of →→.
7.Directions
<Calibration curve No. 01: Selection screen>
<Calibration curve No. 02: Selection screen>

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* The symbol denotes a blinking display.
(3) Insert the bar sensor into raw cashew.
*Whenthebarsensorisinserted,pushthesensorrmlyintothesample
to place more than half of the sensor in the sample. If insertion is not
deep enough, contact between the bar sensor and the sample is not
sucientandanaccuratemeasurementresultmaynotbeobtained.
*Donotstir,twist,or wrenchthesamplewithuseofthebarsensorina
recklessmanner.Failuretoobservethismayapplyexcessiveloadtothe
barsensorandaccordinglycausedamagetoit.Inaddition,thestateof
contactwithasamplesignicantlychanges,whichmaygreatlyaecta
measurementresult.
(4) Press the or key. The decimal point will blink. After
approximately 3 seconds a “beep” will sound and the “Measurement
number”, “Moisture value”, and “Bar graph” will be displayed.
*Thebargraphwilldisplayupto50%inunitsof2%.
*Whenthemoisturevalueisoutsideofthemeasuringrange,"HI"willbe
displayedifthe valueishigherthanthemeasuringrange, and"LO"will
bedisplayedifthevalueislowerthanthemeasuringrange.

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(5) Remove the bar sensor from the sample. At this time, the moisture
value remains on the display. To continue to make further
measurements, start the procedure from the step “(3) Insert the bar
sensor into the sample" on page 11.
When measurement is completed, press the key to turn o
the power.
* Theautopowerofunctionturnsothepowerofthisunitautomatically
ifnomeasurementoroperationisconductedfor5minutes.
* Cleanthebarsensorunitwithadryclothorthelikeafteruse.Ifthebar
sensorisdirty,itmaydeteriorate.

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7-2.Averagedisplay
Pressing the key when the number of measurements is from
2 to 9 displays "measurement number" and "average value". At this
time, “measurement number” and “average value” remain displayed,
but if a measurement is continuously made, “measurement number”
will be 1.
* Ifthenumberofmeasurementsexceeds9,themeasuredvalueuptothat
pointresetsandmeasurementstartsfrommeasurementnumber1.
*Due to th e presence o f mois tu re dis tribution in a bul k, a sin gl e
measurement may not be representative of the moisture in the entire
bulk.Therefore,itisrecommendedto conductmeasurement multiple
timesandusetheaveragevaluefunction.

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7-3.Continuousmeasurementmodesetting
If the continuous measurement mode is selected, measurements
can be made without pressing the or key for each
measurement.
* The symbol denotes a blinking display.
(1) Continuousmeasurementmodesetting
In the step "7-1. Measurement (4)" on page 11, pressing the
key causes the decimal point to blink and display the moisture value
and bar graph. When the bar sensor is not inserted into the sample
or the moisture content is below the measurement range, “LO” will be
displayed, and the numeric display will blink.
(2) Cancelingthecontinuousmeasurementmode
Hold down the key for 2 seconds or more until a “beep”
sounds. The display will momentarily go blank. When you take your
ngerothekey,theunitwillreturntonormalmeasurementmode.
* Pressing the keyturnsothepowerandautomaticallycancels
thecontinuousmeasurementmode.
* Note that the battery life is shorter in the continuous measurement
mode. The battery life is approximately 48 hours when measurements
arecontinuouslyconducted(at20°C).

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7-4.MoistureContentValueCorrection
The moisture value scale of this unit is created by statistically processing the relationship between a
standard method and electric resistance. However, depending on various conditions, there are cases
where the standard method and the moisture value do not agree. In such cases, a moisture value bias
can be adjusted (–9.9 to 9.9%) by the following method.
* The symbol denotes a blinking display.
(1) Press the key.
The “BIAS” indicator will blink, and the previously entered bias value
will be displayed. The initial value is 0.0%.
(2) Enter a correction value. Enter a 2-digit number.
To enter “2.0%”, press the and keys in succession.
To enter a negative value, press the key prior to pressing the
numerical keys.
(3) Press the or key to make measurements.
* Ifacorrectionvaluehasbeenentered,“BIAS”willbedisplayed.
*Tocancelthecorrectionvalue,enter“0.0%”.

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7-5.SettingtheAlarm
When the sample having moisture higher than the set moisture value are measured,
a buzzer sounds to issue an alarm.
* The symbol denotes a blinking display.
(1) Press the key.
The numbers to the right of “ALARM” will blink.
(2) Enter the alarm value.
Enter a 2-digit number. To enter “20%”, press the and
keys in succession.
(3) The alarm setting value is displayed.
Press the or key to make measurements.
* Tocancelthealarmsetting,enter“0.0%”.
* Thesettingrangeis7to30%.
* If the continuous measurement mode is selected, the alarm setting
cannotbeused.

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8.Makingausercalibrationcurve
The moisture value can be corrected by the following
linear equation with the range of the calibration curve
slope 0.1 to 1.9 and intercept -9.9 to +9.9. Overmore,
the corrected calibration curve can be stored in cannel
No.02 to 15 as a user calibration.
* As an example, if t he m ea su reme nt valu es fro m the
channel No.01 have a relationship as shown in the right
grap h compa red to t he stand ard method, correction
values obtained by regression analysis from comparison
test results on several moisture level of sample are 1.10
slopeand1.0intercept.
The user correction formula is shown as follows:
MeasurementValueafterCorrection(%)=CorrectionCoecientA×MeasurementValuebeforeCorrection(%)+CorrectionCoecientB
*If channel No.01 has already been corrected by another correction method shown in 7.4 on page 15, cancel this
correctionandthenperformacomparisontestwiththestandardmethod.
* Sincetheunitof thesetvalueoftheslopeisthemagnication,theslopeof1.00is theoriginalslope.Theunitof
theinterceptsetvalueisthesameastheunitofmoisture,so0.0istheoriginalintercept.Astateofslope1.00and
intercept0.0meansnocorrection.
<Comparisiontest>
Standard method
CH01onthisinstrument

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(1) Press the key to turn on the power. All elements of the LCD
will be displayed for about 3 seconds. After that, "RCA" and "%" are
displayed.
(2) Press the key, and the unit will be the calibration curve input
mode.
(3) Enter a user calibration curve number (02 to 15) to be registered. In
this case, "03" is selected for user calibration curve registration.
Successively press keys in the order of →→.
Ex.)When1.1and1.0areenteredintothecorrectioncoecientsAandBrespectivelyoftheusercalibrationcurveNo.03

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(4) Entera numberfor thecorrection coecientA(0.1to 1.9).Thedefault
valueis"1.0".Inthiscase,"1.1"isenteredforthecorrectioncoecientA.
Successively press keys in the order of →.
(5) EnteranumberforthecorrectioncoecientB(-9.9to9.9).Thedefault
valueis"0.0".Inthiscase,"1.0"isenteredforthecorrectioncoecientB.
Successively press keys in the order of →.
(6) After the entr y is completed, the unit is in the state where the
registered calibration curve is selected. Pressing the or
key enables measurement.
* When user correction coef ficient is viewed by a calibration cur ve
number,conductthesteps(2)to(5),enterthecalibrationcurvenumber
tobeviewed,andviewthedisplayedcoecient.

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The following warnings and errors are displayed when an abnormality is present in this unit or the measurement condition.
9.WarningsandErrors
Display Description
-5℃ This indication is displayed when the temperature of this unit decreases to -5°C or less. It is measurable.
50℃ Thisindicationisdisplayedwhenthetemperatureofthisunitincreasesto50℃ormore.Itismeasurable.
001 Thereisaproblemwiththetemperaturesensor.Servicingisrequired.Thepoweristurnedoaftererror
display (in 4 seconds).
002 There is a problem with the electronic circuit used for moisture measurement. Servicing is required. The
poweristurnedoaftererrordisplay(in4seconds).
HI
(always)
If the measurement value is always displayed as "HI", an abnormality may occurs in this unit.
Press the [ON/OFF] key to turn on the power.
Direct the bar sensor in the air with the sensing part untouched, and
press the [7] or [9] key.
If "HI" is displayed even after the operation above, repair is needed.
Lo
(always)
If the measurement value is always displayed as "Lo", an abnormality may occurs in this unit.
Press the [ON/OFF] key to turn on the power.
Press the [7] or [9] key while holding the sensing part of the bar sensor.
If "Lo" is displayed even after the operation above, repair is needed.
The sensing part is the tip metal
and the metal portion at the bottom
side thereof. Hold them together.