Kett HX-400 User manual

Operating Manual
Thank you for purchasing this product.
Please read the operating manual carefully and use this product properly.
Jute Moisture Tester
HX-400

Safety Precautions
If the safety precautions for the Jute 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.

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 ............................................. 11
6-3. Setting the Measurement Mode .............................. 14
6-4. Displaying the Average Value ................................. 15
6-5. How to make Bias Adjustment ................................ 16
6-6. Setting the Alarm..................................................... 17
6-7. Printer Output.......................................................... 18
7. Error Display...................................................................... 19
8. Calibration List................................................................... 21
CONTENTS

4
• Comes with 2 types of sensors
Includes a pressure sensor for measuring each jute separately and a 2 needle probe that allows jute
to be measured in stacked formation.
• Handheld device with large built-in display
The portable handheld device features a large 76mm x 52mm display that's very easy to read.
• 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

5
2. Specications
Measurement Principle :Electrical resistance
Applications :Jute bags/Jute yarns
Calibrations :
2 types (for pressure sensor (jute) use and 4/12 inch 2 needle probe use)
Standard method :J IS L10 9 5
Measurement Range :6 to 100% (dry base)
Measurement Precision :Standard error 0.9% (moisture values of 20% 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,
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
Included sensors :
Pressure sensor (jute) and 2 needle probe (grip and two 4/12 inch measurement needles)
Accessories : Wrench, Shoulder strap, 1.5 V battery (AA alkaline) (6), Carrying case, Operating manual
Options :Printer VZ-390, Printer cable VZC70

6
<Main body>
Shoulder strap 1.5 V battery (AA) (6) Wrench
Connector
Display
Control Panel
Battery cover (back)
<Accessories>
Carrying case Operating manual
<Accessories sensor>
Pressure sensor 2 needle probe
(jute) (grip and two 4/12 inch measurement needles)
3. Part Names

7
1
2
3
4
5
6
7
Description of display
4. Display
Item No. Name of display area Description
1Calibration number display Displays the number of the calibration being used.
2Battery indicator Comes on when battery is depleted.
3Number of measurment Displays the number of times measured.
4Name of calibration Displays the calibration 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.

8
<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
Selection of a calibration
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

9
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.When using the 2 needle probe, attach the measurement
needles to the grip. Insert the measurement needles into the
socketsattheendofthegripandtightenthexingscrewswith
the hexangular Allen wrench (included). When inserting, orient
the concave part of the measurement needles so that they come
in contact with the head of the screw as shown in the diagram.
Measurement needles
6. Directions

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3.Plug the probe connector into the socket on the main unit, and
fasten and secure the lock ring.
4.Prepare the jute 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 jute and the temperature of the unit. To make more accurate
measurements, allow the temperature of the jute to equilibrate with the
temperature of the unit.
2Tighten the lock ring
1
Securely plug the connector in

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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 “Calibration number”, “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. 19 “7. Error Display”.
2.Select the calibration number for the appropriate sensor.
First, press the key. The calibration number will blink.
Then, enter a 2-digit calibration number.
• The symbol denotes a blinking display.
Number Sensor Calibration name Measuring range(%)
01 Pressure sensor (jute) CCP 6 to 100
02 Needle probe 4NP 6 to 100

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Example: Entering the value 02
Press the key.Therstrowwillstartblinking.
Then, press the key. “02” will be displayed.
• Once calibration is set, it will be maintained in memory unless changed
even when the unit’s power is off.
3.Measure the jute according to the method for each sensor.
<Pressure Sensor (jute)>
Place the jute on a level surface, push the moveable portion's
distance (d) until it's 1 to 2mm and, with it touching as shown in
the diagram, press the key.
<Needle Probe>
With the measurement needle inserted into the pile of jute, press
the key.
• 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.

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4.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 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.
5.Remove the probe from the jute. At this time, the moisture
value will remain on display. To continue to make further
measurements, start the procedure from Step “3. Measure the
jute according to the method for each sensor ”.
 Whennishedmakingmeasurements,pressthe key to
turn off the power.
• With it’s 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 4. Press the...”, press the
key. The decimal point will blink, and the moisture value
and bar graph will be displayed.
• If the sample is not held against the sensor electrodes, or 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 calibrations for this unit were prepared by determining the relationship between the moisture of jute
resulting from a drying method and the electrical resistance of the jute, and then statistically processing
these results. However, depending on various conditions, there are cases where the reference 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% with respect to each calibration) by the following method.
1.Press the key and select the calibration.
2.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%”.
3.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.
4.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.

17
6-6. Setting the Alarm
An upper limit moisture alarm can be set. When jute 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-390). The output content is “calibration number”, “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-390, option), connect the printer cable
(VZC70, option). Please 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-400 CALIBRATION No.01
TIMES [%]
1 8.8
2 8.9
3 8.7
4 9.0
5 8.9
6 8.8
AVERAGE 8.9
[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.