Kett HX-120 User manual

Copra Moisture Tester HX-120
Operating Manual

Copra Moisture Tester Safety Precautions
If the safety precautions for the copra 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.
This symbol for caution indicates something that should be strictly observed in order to use the
product safely.
Caution

1. Features.............................................................................. 4
2.Specications ..................................................................... 5
3. Part Names......................................................................... 6
4. Display................................................................................ 7
5. Description of Keypad ........................................................ 8
6. Directions ........................................................................... 9
6-1. Before Measurement................................................... 9
6-2. Measurement Method ................................................. 10
6-3. Setting the Measurement Mode .................................. 12
6-4. Displaying the Average Value ..................................... 13
6-5. How to make Bias Adjustment .................................... 14
6-6. Setting the Alarm......................................................... 15
6-7. Printer Output .............................................................. 16
7. Error Display....................................................................... 17
CONTENTS

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• Measure moisture content by simply piercing with electrodes
You can measure moisture content simply by piercing the sample with the electrodes.
• Handheld device with large built-in display
The portable handheld device features a large 76mm x 52mm display that's very easy to read.
• Automatic temperature compensation
Compensation for the temperature of the copra is automatically performed by means of a built-in
temperature sensor.
• Bias adjustment
The moisture value can be corrected corresponding to each calibration in the range from
–9.9% to +9.9%.
• Auto power off
When inactive, the unit will automatically turn itself off after approximately 5 minutes to avoid
draining the battery.
• Alarm setting
Set any moisture value, and an alarm will sound if the measured moisture value is higher than the
set moisture value.
1. Features

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Measurement Principle : Electrical resistance
Applications : Copra
Standard method : ISO 665
Measurement Range : 3 to 20%
Measurement Precision : Standard error 0.4% (moisture values of 10% or lower)
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, Automatic temperature compensation,
Auto power off (automatically turns off after approximately 5 minutes)
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
Accessories : Two needle proble, wrench, shoulder strap, 1.5 V battery (AA alkaline) (6),
carrying case, operating manual
Options : Printer (VZ-330), printer connecting cable (VZC-26)
2. Specications

6
<Main body>
1.5 V battery (AA) (6) Wrench
Connector
Display
Control Panel
Battery cover (back)
<Accessories>
Carrying case Operating manual
Two needle probe (Cap) Shoulder strap
3. Part Names

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

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<Control panel>
• Of the numeric keys of 0 to 9, some combine numerical input and other functions.
5. Description of Keypad
Key Function
Power On and Off
Bias correction
Not used for this device.
Average value
Entering a minus input
Setting of upper alarm limit
Setting printer output
Use for measuring. You can use either the left or right side key.
Continuous measurement

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6-1. Before Measurement
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 are depleted. Replace all six with
new batteries.
2.Plug the probe connector into the socket on the main unit, and
fasten and secure the lock ring.
3.Prepare the copra sample to be measured. Allow the sample to
equilibrate to the same temperature as the main unit.
• Errors may occur when there is a large difference in the temperature
of the copra and the temperature of the unit. To make more accurate
measurements, allow the temperature of the copra to equilibrate with
the temperature of the unit.
2Tighten the lock ring
1
Securely plug the connector in
6. Directions

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6-2.Measurement Method
1.Press the key to turn on the power. All elements of the
LCD will be displayed for approximately three seconds.
Subsequently, the “TIMES”, and “%” will be displayed.
• If the display shows something other than that described above, there
may be a problem with the unit. Refer to p. 17 “7. Error Display”.
2.Holdthetwoneedleprobermly,andinsertthesensorneedles
completely into the copra.
• Please make sure to stick the probe in from outside the shell.
• The symbol denotes a blinking display.

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3.Press the key. The decimal point will blink. After about
3 seconds a “beep” will sound and the “Number of measurement
times”, “Moisture value”, and “Bar graph” will be displayed.
• The key on the left and the key on the right both
have the same function so it doesn't matter which one you press.
Please use the one that's easier to press.
• The bar graph displays a 50% full scale in 2% increments.
• If the moisture value is outside of the measuring range, “HI” will be
displayed if the value higher than the measuring range, and “LO” will be
displayed if it is lower.
4.Remove the two needle probe from the copra. At this time, the
moisture value will remain on display. To continue to make further
measurements, start the procedure from Step “2. Hold the two
needleprobermly...”.
 Whennishedmakingmeasurements,pressthe key to
turn off the power.
• With its auto power off function, the unit will automatically turn itself off
when inactive after approximately 5 minutes.
• The symbol denotes a blinking display.

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6-3.Setting the Measurement Mode
There are two measurement modes: “Normal measurement mode” and “Continuous measurement mode”.
Immediately 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.Continuous measurement mode setting
In step “6-2. Measurement Method 3. Press the...”, press the
key. The decimal point will blink, and the moisture value
and bar graph will be displayed.
• If the measured value is outside of the measuring range, either “HI” or
“LO” will be displayed, and the decimal point will blink.
2.Canceling the continuous measurement mode
Press the continuously for at least 2 seconds until a
“beep” sounds. The display will momentarily go blank. When
you take your finger off the key, the unit will return to normal
measurement mode.
• Pressing the key turns off the power and automatically
cancels this mode.
• Note that the battery life is shorter in continuous measurement mode. • The symbol denotes a blinking display.

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6-4.Displaying the Average Value
When the number of measurements is from 2 to 9, and you press
, the “AVE”, “average value”, and “number of measurement
times” will be displayed. At this time, the “AVE”, “average value”,
and “number of measurement times” remain displayed, but if you
proceed to make a measurement, the “number of measurement
times” resets to “1”.
• If the number of measurement times 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.

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6-5.How to make Bias Adjustment
The calibration (scale) for this unit was prepared by determining the relationship between the moisture
of copra resulting from a drying method and the electrical resistance of the copra, and then statistically
processing these results. However, depending on various conditions, there are cases where the standard
measurement method and the moisture value do not agree. In these cases, a moisture value bias adjustment
can be made (–9.9% to 9.9%) by the following method.
1.Press the key. The “BIAS” indicator will blink, and the
previously entered bias value will be displayed. The bias is
initially set to “0.0%”.
2.Enter the bias value.
Enter a 2-digit number. To enter “1.2%”, press the key
and the key in succession. For a negative value, press
the key before the numbers.
3.Press the key to make measurements.
• If a bias adjustment value has been entered, “BIAS” will be displayed
during measurements.
• To cancel the bias adjustment value, enter “0.0%”.
• The symbol denotes a blinking display.

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6-6.Setting the Alarm
An upper limit moisture alarm can be set. When copra is measured having moisture higher than the set
moisture value, the alarm sounds 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 key and
the in succession.
3.The set value for the alarm is displayed. Then, press the
key to make measurements.
• To cancel the set value for the alarm, enter “0.0%”.
• The symbol denotes a blinking display.

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6-7. Printer Output
Measured values can be printed out by using the optional printer
(VZ-330). The output content is “number of measurement times”,
“moisture value”, and “average moisture value”.
1.How to set up
Press the in normal measurement mode.
“P” will be displayed to the right of “TIMES”. Set up is complete.
• The timing of the output is just after the measurement or just after
the display of the average value. However, there is no output if the
measured value is outside the measuring range.
• After setting up the printer (VZ-330, sold separately), connect the printer
cable (VZC-26, sold separately). Refer to the operating manual for the
printer for how to set up the printer.
2.How to cancel the settings
Press the key in normal measurement mode.
“OFF” will be displayed to the right of “TIMES”. The settings have
been cancelled.
• The settings in both 1 and 2 will be retained in memory when the power
is turned off.
HX-120
TIMES [%]
1 6.8
2 6.9
3 6.7
4 7.0
5 6.9
6 6.8
AVERAGE 6.9
[Printout example]

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When there is a problem with the unit or with the measurement conditions, the following errors will be
displayed for 4 seconds, and then the power will turn off.
1.There is a problem with the temperature sensor. Servicing is
required.
2.When either of the errors on the right are displayed, there
is a problem with the electronic circuit used for moisture
measurement. Servicing is required.
7. Error Display

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3.The measurement cannot be made because the temperature
of the unit is below –5°C. Bring the temperature of the unit up
to the operating temperature range (0 to 40°C), and make the
measurement again.
4.The measurement cannot be made because the temperature of
the unit is above 50°C. Bring the temperature of the unit down
to the operating temperature range (0 to 40°C), and make the
measurement again.

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060160