GAOTek Paper Moisture Meter with High Precision (JIS P8127)

This Paper Moisture Meter with High Precision (JIS P8127) is used to measure the moisture content of the kraft paper, corrugated paper, photocopy paper, cardboard and all kinds of paper

GT00ZC00ZX

Description

Overview

The GAOTek Paper Moisture Meter with High Precision (JIS P8127) can be used to measure the moisture content of the kraft paper, corrugated paper, photocopy paper, cardboard and all kinds of paper. The GAOTek Paper Moisture Meter with High Precision (JIS P8127) series is divided into three kinds; a configuration of different types of sensing head to adapt to all kinds of test paper use: equipped with sensing head of bringing type with clamping type, configuration of a conductive rubber sensor head and configuration of a constant pressure sensing head.

Key Features

  • Instant Measurement
  • Portable, light and compact
  • Easy interface
  • LED backlight
  • Automatic power off after 5 minutes
  • Factory pre-calibrated systems
  • Programmable options for specialty paper moisture testing
  • Non-destructive
  • Ergonomic operation and design

Technical Specifications

Measurement Methods Electrical impedance type
Measurement Standard JIS P8127 (photocopy paper, cardboard)
Measurement Range Gauge head of clamp type: photocopy paper 4 % -15 % , cardboard 6 % -20 %

Gauge head of rubber: photocopy paper 4-25 % corrugated paper 6-23 % kraft

paper 5 % -24 %

Gauge head of constant pressure: photocopy paper 2 ~ 10 % corrugated paper 5 ~ 15 % kraft paper 2~10 %
Measurement Accuracy Standard error of 0.4 % (water content below 15 %)
Display Mode Minimum read value of LCD digital display is 0.1 %
Power 1.5 V × 6 (approx 0.45 W)
Operating Temperature 14 °F ~ 104 °F (0 °C to 40 °C)
Size (W x D × H) 4.33 in × 8.26 in × 1.96 in (110 mm × 210 mm × 50 mm)
Weight 1.10 lbs (0.5 kg)

Additional Information

  1. Description of display

Item No. Name of display area Description
1 Calibration curve number display Displays the number of the calibration curve being used.
2 Battery indicator Comes on when battery is depleted.
3 Measuring times Displays the number of times measured.
4 Name of calibration curve Displays the calibration curve display name or the set calibration curve name.
5 Alarm set-point value Displays the set-point value for the alarm for the upper moisture limit that was set.
6 Moisture value Displays the measured moisture value (%).
7 Bar graph Displays the measured moisture value by means of a bar graph. Displays up to 25 % in 1 % increments
  1. Description of Keypad

* 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.

Key Function
  Used to turn power On and Off.
  Used for moisture value bias compensation.
  Used to select a calibration curve.
  Used when determining the average value and to confirm the numerical 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 set the printer output.
  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.
  1. Directions

2.1 Before Measuring

(1) The unit is powered by six 1.5 V batteries (AA, 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.

* When using the grip sensor, please plug the cord (for use with the grip sensor) into both the main unit and the sensor.

* When plugging in the grip sensor or pressure sensor connector, plug it in with the “upper side” label facing up.

(3) Prepare the paper to be measured, and adapt it to equilibrate to the same temperature as the main unit.

* Errors may result when there is a large difference in the temperature of the paper and the temperature of the unit. To make more accurate measurements, adapt the temperature of the paper to equilibrate to the temperature of the unit.

2.2 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.

(2) Select a calibration curve from the included “calibration curve list.” Press the  key, and the calibration curve number will start blinking. Enter a 2-digit calibration curve number.

<Example> Entering the value 03

Press the  key. The 1-digit will start blinking. Then, press the  key again. “03” will be displayed.

* Please make use of the calibration curve list by affixing it to the battery cover.

* Once the calibration curve is set, unless otherwise changed, it will be maintained in memory even when the unit’s power is turned off.

(3) Hold the paper against the sensor electrode in accordance with the usage method for each sensor. Keep the paper in position until the measurement is complete.

<Grip sensor>

  1. Hold onto the grip, and pull the lever up. * When pulling the lever up, there may be a creaking noise, but this is not unusual.
  2. Insert paper in between the electrodes.
  3. Loosen your grasp on the grip, and clamp the paper in by lowering the lever.

<Rubber sensor>

  1. Place the paper on top of the underlay (acrylic plate).
  2. Hold the sensor against the paper.

<Pressure sensor>

  1. Insert paper in between the electrodes of the pressure sensor.
  2. Clamp the paper in by pushing down on the handle until it stops.

* When using the grip sensor or pressure sensor, be careful not to nip your fingers.

(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 25 % full scale in 1 % increments.

* 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.

(5) Remove the paper from the sensor. At this time, the moisture value will remain displayed, but if measurements will continue to be made, please start from “(3) Hold the paper against the sensor electrodes in accordance with the usage method for each sensor.” When making measurements is completed, press the  key, and turn off the power.

* With its auto power off function, the unit will automatically turn itself off when inactive after approximately 5 minutes.

2.3. 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) Setting the continuous measurement mode in step “6-2. Measurement Method (4),” press the  key. The decimal point will blink, and the moisture value and bar graph will be displayed.

* If the paper is not held against the sensor electrodes, and if the measured value is outside of the measuring range, either “HI” or “LO” will be displayed, and the decimal point will blink.

(2) Cancelling 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 this mode.

* Note that the battery life is shorter in continuous measurement mode.

2.4. 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.

2.5. How to Make a Moisture Value Bias Adjustment

The calibration curves (scale) for this unit were prepared by determining the relationship between the moisture of paper resulting from a drying method and the electrical resistance of the paper, 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 and thickness of the paper. 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 %.”

2.6. 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 %.”

2.7. Printer Output

Measured values can be printed out by using the optional printer. The output content is “calibration curve number,” “number of measurement times,” “moisture value,” and “average moisture value.

(1) Set up Press the  key in normal measurement mode. “P” will be displayed to the right of “TIMES”. The set-up is complete.

* The timing for output is just after a measurement or just after the display of an average value. However, there is no output if the measured value is outside the measuring range.

* After setting up the printer), connect the printer cable. Please refer to the operating manual for the printer for how to set up the printer.

(2) How to cancel the setting. Press the  key in normal measurement mode. “OFF” will be displayed to the right of “TIMES”. The setting is cancelled.

* The settings in both (1) and (2) will be retained in memory when the power is turned off.

2.8. Data Storage

Up to 250 measurement values are stored automatically. The contents of the data are “data number”, “year/month/day”, “time”, “calibration curve number”, and “moisture value”.

* If the number of stored data items exceeds 250, the oldest data item is deleted and the new data item is added.

(1) Batch output of stored data. Press the keys in the order of  to output the data.

* After setting up the printer (VZ-330, option), connect the printer cable (VZC26, option).

* Refer to the printer’s operating manual for how to set up the printer.

(2) Block function. For cases such as different measurement samples, pressing the  key between measurements is recognized as a separator signal, and a line feed is inserted when printing out.

(3) Batch erasure of stored data

Press the  keys in the order of. A tone sounds and “0” will be displayed for the measurement number. Next, the display for moisture changes from 0 00 000. The original display will return after approximately 15 seconds.

2.9. Date and Time Display

Press the keys in the order of . The date and time (24-hour system) are displayed. “TIMES” will blink. A display example is shown as 27 May, 14:53. After displaying, press the  to turn off the power.

* If the clock is slow or the display is abnormal, the clock battery has been depleted. If the  is blinking when performing the above operation, the clock battery has likewise become depleted. Servicing is required to use the clock function.

The following procedure sets the western calendar date and time.

<Example> 23 January 2008, 4:56

*In the operation below, to confirm the input number, press the  key. If you make a mistake when pressing an input number key, press the  key.

(1) Entering the western calendar date (in this case, 2008). When the date and time are displayed, press the  key. The screen on the upper right will be displayed. Next, enter the last 2-digits of the western calendar year. Press keys in the order of .

(2) Entering the month and day (in this case, January 23) First, enter the month of January by pressing keys in the order of . Next, enter the 23rd by pressing keys in the order of  .

* When the month and date are 1-digit numbers, enter a leading “0”.

The following procedure sets the western calendar date and time.

<Example> 23 January 2008, 4:56

*In the operation below, to confirm the input number, press the  key. If you make a mistake when pressing an input number key, press the  key.

(1) Entering the western calendar date (in this case, 2008) when the date and time are displayed, press the  key. The screen on the upper right will be displayed. Next, enter the last 2-digits of the western calendar year. Press keys in the order of .

(2) Entering the month and day (in this case, January 23) First, enter the month of January by pressing keys in the order of . Next, enter the 23rd by pressing keys in the order of .

* When the month and date are 1-digit numbers, enter a leading “0”.

(3) Entering the time (in this case, 4:56)

After the input of Step (2) is completed, the screen at the right will be displayed. First, enter 4 for the hour by pressing  keys in the order of . Next, enter 56 for the minutes by pressing keys in the order of  .

* When the hour and the minutes are 1-digit numbers, enter a leading “0”.

(4) Set up complete when the input of Step (3) is completed, “TIMES” will blink as in the screen on the right. Set up is complete at this point. Press the  key to turn off the power.

  1. Preparing a Calibration Curve

3.1. What is a Calibration Curve?

In general, calibration curves for an electrical resistance type moisture meter indicate the relationship between the electrical resistance value for each sample and the moisture previously determined by a standard method. These may be expressed as an equation, a graph, a table, or some other form. Calibration curves for the GAOTek Paper Moisture Meter with High Precision (JIS P8127) (for copying paper and cardboard) show the relationship between the electrical resistance value for paper measured using a grip sensor, rubber sensor, or pressure sensor and the moisture value determined by a standard method. Depending on various conditions such as the type and thickness of paper and other factors, the relationship between the electrical resistance value and the moisture can differ greatly. Accordingly, depending on the paper, the correct moisture value may not be able to be measured by the calibration curves of this unit. In this case, use the moisture value bias correction function or prepare a calibration curve for the sample from the relationship of the count value in the count mode and the moisture value according to a standard method.

3.2. Precautions when Preparing a Calibration Curve

* Prepare the calibration curve with the same sensor as when measuring the sample. If the sensor is different, accurate measurements cannot be made.

* Prepare the calibration curve in the same environment as when measuring the sample. Errors will become particularly large if the temperature changes.

* In cases where the temperature at the time of measurement differs with the seasons or other factors, prepare and enter multiple calibrations curves for each temperature.

<Example>

Temperature at the time of measurement Temperature at the time of calibration curve preparation Entered calibration curve number
59 F ~ 68 F (15 °C ~ 20°C) 62.6 F (17 °C) 11
68 F ~ 77 F (20 °C ~ 25°C) 71.6 F (22 °C) 12

3.3. How to Prepare a Calibration Curve

(1) Preparing samples. Prepare 2 to 5 samples having different moisture levels. At this time, prepare samples including the upper and lower bounds of the moisture values you actually want to measure. For example, if you wish to measure moisture from 5-15 %, be sure to include samples at 5 % or lower and 15 % or higher

(2) Measure the samples prepared in count mode (calibration curve number 10). At the same time, measure each sample by a standard method.

* In cases such as where there is a large amount of scatter in the count values from the samples, a more stable count value can be obtained by making measurements in continuous measurement mode or by determining an average value with normal measurements.

(3) Record the measurement results in count mode (calibration curve number 10) as in Table 1.

* When preparing the table, put the count values from the GAOTek Paper Moisture Meter with High Precision (JIS P8127) in the ascending order.

3.4. Inputting a Calibration Curve (When measuring 5 sample points)

10 user calibration curves (calibration curve numbers 11 to 20) can be input into this unit. Here, we describe an example of entering and storing measurement results (content of “Table 1”) in count mode (calibration curve number 10) into calibration curve number “12”.

* Enter numerical input with the numeric keys. When the count value to input is a 2-digit integer, or when the moisture value is a 1-digit, enter a leading “0”.

<Example> To input 9.9 %

Press keys in the order of

* If you make a mistake in the numerical value to be input, press the  key, and then enter the correct numerical value.

(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.

(2) Select the calibration curve number

Press the  key, and the calibration curve number will start blinking. Enter a 2-digit calibration curve number, in this case “12”.

Press keys in the order of  .

(3) Inputting a calibration curve Press the  key. The unit will go into calibration curve input mode.

<Procedure 1>

Enter the count value for “Sample 1”, in this case “98”. Press keys in the order of . When the key is pressed, the display will change from “HK3” to “STD” to confirm the entry.

* Enter the “count value” when “HK-3” is displayed, and enter the “standard method moisture value” when “STD” is displayed.

<Procedure 2>

Enter the standard method moisture value. Press keys in the order of          .

When the  key is pressed, the entry of “Sample 1” is confirmed. The display changes from “STD” to “HK3”, and the number of measurement times changes from “1” to “2”.

Enter the count values and standard method moisture values for “Sample 2” through “Sample 5” by repeating Procedure 1 and Procedure 2.

When the input for “Sample 5” is complete and the  key is pressed, a “beep” will sound. The calibration curve will be entered in “Calibration curve number 12,” and the unit will switch to the measurement screen.

If the entry is completed normally, a “C” will be displayed to the right of the calibration curve number.

* To input a calibration curve, the numerical values for points [1] through [5] must be entered. For preparing a 2 to 4 point sample calibration curve, repeatedly enter the upper limit values (count value = 999, moisture value = 99.9). For example, when preparing a 2-point sample calibration curve, enter the upper limit values (HK-300 = 999, standard method = 99.9) for all of the measurement values for [Sample 3] to [Sample 5].

* If newly entering a different calibration curve for a calibration curve number (11-20) that has already been entered, the calibration curve will be overwritten, and the previously entered calibration curve will be modified. Because there may be times when a needed calibration curve is erased by mistake, we recommend that calibration curve data be saved once it has been prepared.

 3.5. Inputting a Name for the Calibration Curve

A 3 letter (alphabetical character) calibration curve name can be entered for the unit’s user calibration curves.

<Example> Entering the name “ABC” for calibration curve number 12.

(1) Selecting the calibration curve number Press the  key, and the calibration curve number will start blinking. Enter the 2-digit calibration curve number, in this case “12”. Press keys in the order of .

(2) Entering a name

  1. Press the key, and an underline field “_ _” will be displayed to the right of the calibration curve number.
  2. Entering “A”.

Press the key, and an “A” will be displayed to the right of the calibration curve number. Press the  key, and the display will change from “A” to “A_ _”.

  1. Entering “B”.

Press the  key, and the display will change from “A_ _” to “AA”. Press the  key one more time, and the display will change from “AA” to “AB”. Press the  key, and the display will change from “AB” to “AB_ _”.

  1. Entering “C”.

Press the  key, and the display will change from “AB_ _” to “ABC”. Press the  key.

(3) Complete entering the input data: the name, when input is completed, a “beep-beep-beep-beep” tone will sound, and the unit will return to its normal state.

3.6. Display of Input Moisture Values when Preparing a Calibration Curve

(1) First, enter the calibration curve number you want to display by pressing the  key.

(2)Next, successively press keys in the order of .

* At this time, if there is an interval greater than 3 seconds between the pressing of each key, the curve number cannot be set. The count value for “Sample 1” is displayed.

Press the  key, and the standard method moisture value for “Sample 1” will be displayed. “STD” is shown on the display. Each time the  key is pressed, the count value and the standard method moisture value for “Samples 2 through 5” will be displayed one after the other.

3.7. Erasing a Calibration Curve

(1) First, enter the calibration curve number you want to erase by pressing the  key.

(2) Successively press keys in the order of .

The buzzer will sound, and all the LCD elements will be displayed for approximately 3 seconds. Afterwards, the “Calibration curve number,” “TIMES,” and “%” will be displayed.

* When a calibration curve is erased, the unit returns to its initial state.

(3) The measurement cannot be made because the temperature of the unit is below 23 °F (-5 °C). Bring the temperature of the unit up to the operating temperature range 32 °F to 104 °F (0 °C to 40 °C), and make the measurement again.

(4) The measurement cannot be made because the temperature of the unit is above 122 °F (50 °C). Bring the temperature of the unit down to the operating temperature range 32 F to 104 F (0 °C to 40 °C), and make the measurement again.

List of special Operations

Function Operation
Moisture value display for a user

calibration curve,

Enter the calibration curve number for the calibration curve you want to display by pressing the  key. Then successively press keys in the order of .
Erasing a user calibration curve Enter the calibration curve number for the calibration curve you want to erase by pressing the  key. Then Successively press keys in the order of  .
Batch output of stored data

 

Successively press keys in the order of .
Batch erasure of stored data

 

Successively press keys in the order of .
Inputting a delimiter (block function) Press the  key between measurements
Date and time display Successively press keys in the order of .
Setting the date and time Press the  key in the state where the date and time are displayed.

Calibration Curve List

Number Sensor Calibration curve Display name Measuring range (%)
01 Grip Copying paper GCP 4 ~ 15
02 Cardboard GCB 6 ~ 20
03 Rubber Copying paper RCP 4 ~ 25
04 Liner (K-100 Liner) RLN 6 ~ 23
05 Kraft (K-100 Liner) RKF 5 ~ 24
06 Pressure Copying paper PCP 2 ~ 10
07 Liner (K-200 Liner) PLN 5 ~ 15
08 Kraft (K-200 Liner) PKF 2 ~ 10
11~20 _ _ _ User calibration curve _ _ _ 1 ~ 99 (display range)
10 Count mode HK3 10 ~ 990 (display range)

 

Reviews

There are no reviews yet.

Be the first to review “GAOTek Paper Moisture Meter with High Precision (JIS P8127)”

Your email address will not be published.