Kett HB-610 User manual

Operating Manual
Thank you for purchasing this product.
Please read the operating manual carefully and use this product properly.
Grain Moisture Tester
HB-610

Safety Precautions
If the safety precautions for the Grain Moisture Tester are not observed, injuries or damage to property may
result. While the safety of the product has been given considerable attention, please read the precautions
in the operating manual and use the instrument properly.
• Please observe the safety precautions.
Please read the precautions noted in the operating manual.
• Do not use if broken.
If the tester breaks or malfunctions, please consult our repair service.
• Meaning of warning symbols.
In order to prevent damage resulting from erroneously operating the equipment, the following symbols are
indicated in the operating manual and on the product. The following are their meanings.
Note Items which the user should be aware of in order to use the unit safely.

CONTENTS
1. Features............................................................................................... 7
2. Specications...................................................................................... 8
3. Calibration Curve List.......................................................................... 9
4. Part Names.......................................................................................... 10
5. Display................................................................................................. 11
6. Description of Keypad......................................................................... 12
7. Directions ............................................................................................ 13
7-1. Before Measurement................................................................... 13
7-2. Measurement Method................................................................. 14
7-3. Displaying the Average Value...................................................... 17
7-4. Setting the Measurement Mode ................................................. 18
7-5. How to make Bias (oset) Adjustment........................................ 19
7-6. Setting the Alarm ........................................................................ 20
7-7. Printer Output.............................................................................. 21
7-8. Data Storage ............................................................................... 22
7-9. Date and Time Display ................................................................ 23

7-10-1. Inputting a company name ......................................... 26
7-10-2. Displaying company name...........................................28
7-10-3. Deleting company name..............................................28
8. Preparing a Calibration Curve ........................................................ 29
8-1. What is a Calibration Curve?.................................................... 29
8-2. Precautions when Preparing a Calibration Curve ................... 30
8-3. How to Prepare a Calibration Curve.........................................31
8-4. Inputting a Calibration Curve................................................... 32
8-5. Inputting a Name for the Calibration Curve............................. 36
8-6. Display of the Input Moisture Value
when Preparing a Calibration Curve....................................... 38
8-7. Erasing a Calibration Curve...................................................... 39
9. Error Display.....................................................................................41

6

7
This unit is a grain moisture tester that applies electric resistance of an object to be measured.
Only putting the bar sensor into bag displays their moisture content (%). This moisture
tester needs only simple operation for quick measurement without selecting an operator or
measurement environment.
• Bias adjustment for moisture values
Bias adjustment for moisture values in the range from -9.9 to +9.9% with respect to each
calibration curve.
• Can create a maximum of 10 user calibration curves (scaled)
Users can record their own calibration curves to support various types of jute.
• Auto power o
If no measurement is made or key is operated for approximately 5 minutes, the power is
automatically shut o and avoids wasting the batteries.
• Other functions
Average value, upper limit setting, data storage (max. 250), company name setting, date and time
setting are available. An optional printer and PC software for data logging are also available.
1. Features

8
2. Specications
Measurement Principle :Electrical resistance
Applications :Raw cashew nut / Cashew kernel / Cashew kernel testa
Calibration Curves*1 : See 3."Calibration Curve List"
Measurement Range : See 3."Calibration Curve List"
Accuracy : See 3."Calibration Curve List"
Standard Method : See 3."Calibration Curve List"
Display :Digital (LCD)
Resolution :0.1%
Operating Temperature Range :0 to 40˚C
Functions :Moisture value bias adjustment (–9.9 to +9.9%), Average value, Upper limit alarm,
Auto power o (automatically turns o after approximately 5 minutes), Data storage
(approximately 250 data), Company name setting, Data output (printer / PC)
Power Supply :1.5 V batteries (AA alkaline) (6)
Power Consumption : Approximately 0.45 W
Dimensions :110 mm (W) x 210 mm (D) x 50 mm (H)
Weight :0.5 kg
Included sensors :Bar sensor (UB-1000)
Accessories :Shoulder strap, 1.5 V batteries (AA alkaline) (6), Carrying case, Operating manual
Options :Printer VZ-390, Printer cable VZC70, Data Logger Software HDL-03

9
3. Calibration Curve List
#Applications Calibration
curve name
Method Measuring
range
Accuracy* Standard method
01 Raw cashew (in a bag) RCA Bag 7 - 35% 1.5% ISO665
02 Raw cashew (in a bucket) RCB Bucket 7 - 35% 2.5% ISO665
03 Cashew kernel CK Bag 3 - 11% 0.8% UNECE STANDARD
DDP-17
04 Cashew kernel with testa CKT Bag 3 - 14% 0.8% UNECE STANDARD
DDP-17
20 Count mode HB6 -10 - 990
(Display range) - -
21 - 30 User calibration curve - - 1 - 99 %
(Display range) - -
* Standard error of calibration (in the range moisture 20% or lower)

10
Main unit
Control panel
Battery cover (back)
Connector
Display
4. Part Names
Shoulder strap 1.5 V battery (AA) (6)
<Accessories>
Carrying case Operating manual
<Accessories sensor>
Bar sensor (UB-1000)

11
4
5
6
7
1
2
3
Description of display
Item No. Name of display area Description
1Calibration curve number display Displays the number of the calibration curve being used.
2Battery indicator Comes on when battery is depleted.
3Measuring times Displays the number of times measured.
4Name of calibration curve Displays the calibration curve name or the set calibration
curve name.
5Alarm set-point value Displays the set-point value for the alarm for the upper
moisture limit that was set.
6Moisture value Displays the measured moisture value (%).
7Bar graph Displays the measured moisture value by means of a bar
graph. Displays up to 50% in 2% increments.
5. Display

12
* The AB to YZ keys are used for inputting alphabetical characters (name of calibration curve).
* Of the numeric keys of 0 to 9, some combine numerical input and other functions.
<Control panel>
6. Description of Keypad
Key Function
Used to turn power On and O.
Used for moisture value bias compensation.
Used to select a calibration curve.
Used when determining the average value and to conrm the nu-
merical value input.
Used when there is an input error and to input a minus sign.
Used to set the measurement upper limit value.
Used to input, show, and clear a company name.
Used to set the printer output.
Used to show the number of measurement data recorded, output
data, and clear data.
Used to input the name of the calibration curve.
Used to input the calibration curve.
Used to make a measurement.
Used to switch the measurement values from a constant display to
a continuous display.
Used for block functions.

13
7-1. Before Measuring
(1) The unit is powered by six 1.5 V batteries (A A, alkaline).
Remove the rear battery cover, and 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 are near depletion. Replace all six
with new batteries.
(2) Connect the sensor to the main unit. Plug the sensor connector into
the socket on the main unit, and fasten and secure the lock ring.
* At this moment, direct the silver indentation has to be the front
side, hexagonal screw facing back side. Measured values may be
aected.
(3) Prepare the sample to be measured, and adapt it to equilibrate
to the same temperature as the main unit.
* Errors may result when there is a large dierence in the temperature
of the sample and the temperature of the unit. To make more accurate
measurements, adapt the temperature of the sample to equilibrate to
the temperature of the unit.
7. Directions
(1) Direct the silver indentation to the front
side and securely insert the connector
(2)Tighten the lock ring

14
7-2. Measurement Method
(1) Press the key to turn on the power. All elements of the
LCD will be displayed for about 3 seconds. Subsequently, the
"calibration curve number," "TIMES," and "%" will be displayed.
* At this time, if the display shows something other than that described
above, there may be a problem with the unit. Refer to p.41, "9. Error
Display".
(2) Select a calibration curve from "Calibration Curve List" on p.9.
Press the key, and the calibration curve number will
start blinking. Enter a 2-digit calibration curve number.
<Example> Entering the value 02
Press the key. The 1-digit will start blinking.
Then, press the key. "02" will be displayed.
* Once the calibration curve is set, unless otherwise changed, it will be
maintained in memory even when the unit's power is turned o.
*The symbol denotes a blinking display.

15
(3) Measure the sample according to the method for each application.
Measurement errors may occur if the method is not correct.
<Bag>
Slowly insert the bar sensor completely from the side of the bag.
<Bucket>
Put the sample in a bucket with a depth of 20 cm or more, and
insert the bar sensor from the top.
* Select the bucket application when inserting the bar sensor from the
top with the bag open.
* When the bar sensor is inserted, push the sensor firmly into the
sample to place until the metal parts are completely hidden. If
insertion is not deep enough, contact between the bar sensor and
the sample is not sufficient 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.

16
(4) Press the key, and the decimal point will start to blink.
After approximately 3 seconds, the buzzer will sound with a
"beep", and the "number of measurement times," the "moisture
value," and the "bar graph" will be displayed.
* The bar graph will display up to 50% full scale in 2% increments.
* "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.
* With its auto power o function, the unit will automatically turn itself o
when inactive after approximately 5 minutes.
* It beeps after a measurement if the stored measurement data is 245
data or more. See the section [7-8 Data Storage (3) Batch erasure of
stored data] to delete all the measurement values.
*The symbol denotes a blinking display.

17
7-3. Displaying the Average Value
When the number of measurements is from 2 to 9, and you
press , the “AVE”, “average value”, and “measurement
number” will be displayed. At this time, the “AVE”, “average
value”, and “measurement number” remain displayed, but if you
proceed to make a measurement, the “measurement number”
resets to “1”.
* If the number of measurements exceeds 9, the measured value up to
that point resets and measurement starts from measurement number 1.
* The average value cannot be determined when making measurements
in continuous measurement mode.

18
7-4. Setting the Measurement Mode
There are two measurement modes: "Normal measurement mode" and "Continuous measurement
mode." After pressing the key and turning on the power, the unit will be set to "Normal
measurement mode." If the unit is set to "Continuous measurement mode," measurements can be made
without pressing the key for each measurement.
(1) Setting the continuous measurement mode
In step "7-2. Measurement Method (4)," press the key.
The decimal point will blink, and the moisture value and bar
graph will be displayed.
* If the sensor electrodes are not hit the sample, "LO" will be displayed.
(2) Canceling the continuous measurement mode
Press the key, and a beep will sound. The display
will momentarily go blank, and the unit will return to normal
measurement mode.
* Pressing the key turns off the power and automatically
cancels continuous measurement mode.
* Note that the battery life is shorter in continuous measurement mode.
*The symbol denotes a blinking display.

19
7-5. How to Make a Moisture Value Bias (oset) Adjustment
The calibration curves (scale) for this unit were prepared by determining the relationship between the
moisture of sample resulting from a drying method and the electrical resistance of the sample, and then
statistically processing these results. However, the standard measurement method and the moisture
value may not agree as a result of various conditions such as the type of the sample. In these cases, a
moisture content bias adjustment can be made (-9.9 to +9.9% with respect to each calibration curve) by
the following method.
(1) Press the key and select the calibration curve.
(2) Press the key. The "BIAS" will blink, and the previously
entered bias value will be displayed. The bias is initially set to
0.0%.
(3) Enter a bias value.
To enter the 2-digit number "1.2%," press the
keys in succession. For a negative value, press the key
prior to pressing the numerical keys.
(4) Press the key to make measurements.
* If a bias adjustment value has been entered, "BIAS" will be displayed
when making measurements.
* To cancel the bias adjustment value, enter "0.0%."
*The symbol denotes a blinking display.

20
7-6. Setting the Alarm
An upper limit moisture alarm can be set. When paper having higher moisture than the set value is
measured, the alarm will sound with a beeping tone.
(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 "8%", press the
keys in succession.
(3) A value set for the alarm of "08%" will be displayed. Press the
key to make measurements.
* To cancel the value set for the alarm, enter "00%."
*The symbol denotes a blinking display.