Kett FD-720 Operating Manual

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Page 1

Infrared Moisture Determination Balance

FD-720

Operating Manual

Page 2

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Infrared Moisture Determination Balance Safety NotesFPL950701

Improper use of the infrared moisture tester in violation of the following safety notes may result in death, injury or damage to property due to fire, etc. Furthermore, the infrared moisture tester has high temperature components which can cause burns if proper safety guidelines are not followed.

 Observe all safety guidelines

Carefully read and observe all safety notes included in this user’s manual.

 Do not use the unit if it appears to be malfunctioning

If you suspect a problem or malfunction in the unit, discontinue use and immediately have the unit inspected by certified Kett service personnel.

 Meanings of Warning Indicators and Symbols

The following symbols are used in this operating manual and product to prevent accidents from occurring as a result of improper usage or handling. The meaning of each symbol is as described below.

Failure to observe these items may lead to death or injury to the user.

Failure to observe these items may lead to injury to the user or damage to property.

Items which the user should be aware of in order to use the unit safely.

Caution Symbols Stop Symbols Symbols Requiring User Action

Fire Hazard Burn Hazard Electric Shock Prohibited Do Not Do not Expose Required Disconnect Plug

Hazard Disassemble to Water Action from Electrical Outlet

 Do not attempt to measure samples which may undergo dangerous chemical reactions when heated, as doing so

may result in an explosion or release of toxic gas.

 Do not place flammable materials near the infrared moisture tester.

Some parts of the infrared moisture tester become extremely hot during operation and could lead to a fire if flammable materials are placed nearby.

 Never use with any power source for which the product was not designed.

Application of excessively high voltage may result in overheating, malfunction, or fire.

 Do not attempt to disassemble, modify or rebuild the infrared moisture tester.

Doing so may result in accident, electric shock, etc. If you believe the unit may be malfunctioning, take it to an authorized Kett service center for service.

 Do not allow the unit to come in contact with water.

The infrared moisture tester is not waterproof. Do not allow water or other liquids to get into the unit’s enclosure as this may lead to electric shock or malfunction.

 Do not touch the heat-dispersing component of the heater cover or sample dish with your bare hands, as doing

so might result in burns. This infrared moisture tester is at high temperature during and immediately after making measurements. When touching the unit, only use the specified control knobs and accessories.

Warning Caution

Note

Warning

Fire Hazard Electric Shock Hazard

Caution

Burn Hazard Electric Shock Hazard

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Contents

1. Precautions to be observed when taking measurements .................... 6

Description of Features and Principles of Operation .................................

2-1 Principles of Operation............................................................................................. 8

2-2 Features ................................................................................................................... 8

2-3 Applications (i.e., materials which can be measured) ............................................. 8

3. Specifications ........................................................................................... 9

4. Names of Individual Parts and Components ......................................... 10

4-1 Names of Parts of Main Unit .................................................................................... 10

4-2 Parts and Accessories ............................................................................................. 11

5. Display and Control Panel ....................................................................... 12

5-1 Display......................................................................................................................12

5-2 Control Panel Operations......................................................................................... 13

6. Assembly and Installation of Main Unit.................................................. 14

7. Tips on how to ensure accurate measurements ................................... 17

8. How to Conduct Measurements.............................................................. 19

9. Specifying Measuring Conditions........................................................... 23

9-1 Types of Settings...................................................................................................... 23

9-2 Descriptions of Individual Measuring Condition Settings ........................................ 23

9-2-1 Selecting the CONDITIONS (Measuring conditions storage area) ............. 24

9-2-2 Selecting the MODE (Measuring mode)...................................................... 25

9-2-3 TEMP (Drying temperature)......................................................................... 34

9-2-4 Bias .............................................................................................................. 35

10. Menu Settings ........................................................................................... 36

10-1 Types of Menu Settings............................................................................................ 36

10-2 Descriptions of Individual Menu Items ..................................................................... 36

10-2-1 Selecting units (measurement standard and minimum display units)......... 37

10-2-2 Specifying the type and format of output..................................................... 38

10-2-3 Specifying sample codes ............................................................................. 41

10-2-4 Setting the date and time............................................................................. 42

10-2-5 CAL (Scale calibration) ................................................................................ 43

10-2-6 Specifying a device ID ................................................................................. 45

10-2-7 Specifying a password ................................................................................. 46

10-2-8 Specifying the power settings ...................................................................... 47

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11. Error Messages......................................................................................... 48

12. Predictive Measurements ........................................................................ 50

12-1 A Description of Predictive Measuring..................................................................... 50

12-2 Procedure for Obtaining Predicted Measurements.................................................. 52

12-2-1 Calculating the bias to be specified when operating in predictive

measurement mode ..................................................................................... 52

12-2-2 Evaluating predicted measurements ........................................................... 54

12-2-3 Obtaining predicted measurements............................................................. 55

13. Printing Output to a Printer (Option) ...................................................... 56

13-1 Sample Printer Output ............................................................................................. 56

13-2 Outputting Past Measurement Data......................................................................... 59

14. Computer Interface................................................................................... 60

14-1 RS-232C Interface Specifications............................................................................ 60

14-2 Setting Up and Transmitting Data ............................................................................ 61

14-2-1 Connecting the RS-232C cable ................................................................... 61

14-2-2 FD-720 settings............................................................................................ 61

14-2-3 Starting up the computer ............................................................................. 61

14-3 Computer Output Format ......................................................................................... 62

15. Maintenance.............................................................................................. 64

15-1 Performing Maintenance .......................................................................................... 64

15-2 Replacing Fuses ...................................................................................................... 65

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Be sure to follow proper procedures during operation

 When opening or closing the lid to the heater, always be sure to use the

handle.

 Be sure to put the wind shield, sample dish tray, handler, and sample

dishes properly into place. (See “6. Assembly and Installation of Main Unit” on p. 14 for instructions.)

 Always be sure to use the provided handler to remove sample dishes.  When removing a sample dish, do not allow your hands to come into

contact with the heater or any of the metal (aluminum) parts around the heater, as doing so could result in burns.

 The sample dish and area around the sample dish will be very hot

immediately after performing a measurement. Be sure to place the sample dish in an appropriate place to allow it to cool.

Areas to touch and areas subject to high temperatures

1. Precautions to be observed when taking measurements

Handle for holding heater lid

Place to grasp handler

Heater

Never perform measurements using hazardous materials

 Heating materials which would present a risk of explosion or combustion, or materials which could give

off noxious fumes when heated, is extremely dangerous and this instrument should never be used with any such materials. The same also applies to the use of any materials which might cause hazardous chemical reactions to take place when heated.

 When heating materials that would first dry along the surface, and then allow the internal pressure to rise

excessively, there is a danger that heating such materials could cause them to rupture. Such materials should never be measured, as doing so could be dangerous.

 If any materials being measured ignite, immediately remove the power plug from its socket and take

appropriate measures extinguish the fire.

 While a measurement is being performed or immediately after a measurement has been performed, the

areas marked in the accompanying diagrams as will heat up to high temperatures. When handling the unit, always be sure to allow your hands to come into contact only with the designated areas.

Handle

Sample

dish

Handler

HOT

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Never place any easily flammable objects near the product

 The components of the infrared moisture tester can become very hot when measurements are

being taken or immediately after measurements have been taken. The heat could cause objects or materials to catch fire if they were to come into contact with the unit, an d no easily flammable objects or materials should be kept near the product.

 Never place any objects which might easily be damaged by heat near the unit, as doing so

might result in deformation or damage to the objects in question.

 No objects should ever be placed upon the heater.  If you see fire coming from the unit or notice smoke, an odd smell, or any other sign of abnor-

mal functioning, remove the power plug from its socket, or take whatever other steps would be appropriate to deal with the problem.

Notes on using the control keys

 Never turn on the power to the unit while holding down any of the control keys.  Never press any keys other than those directed or press two or more keys together at the same

time unless directed to do so.

 When there is any danger that the unit might be damaged by lightning, remove the power plug

from its socket.

Stopping operation

 The key can be pressed at any time during operation to halt operation. If you suspect

for any reason that the product is not operating properly or that there is any sort of danger, immediately press the key to halt operation.

Setup and storage

 Avoid using or storing the unit in a location where it would be exposed to excessively high or

low temperatures, high levels of humidity, direct sunlight, electromagnetic interference, corrosive gases, or large amounts of dust.

 Place the unit on a flat and stable surface where it will not be subjected to significant vibration

during use.

 When moving the unit, never tilt it any more than necessary.

 Take care never to drop or bump the unit or otherwise allow it to be subjected to strong shocks

or the application of excessive force.

 When removing the power cord or RS-232C interface cable, never pull on the cord or cable and

instead hold the plug or cable connector when removing.

 When the unit is not to be used over an extended period of time, remove the power plug from

its socket.

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2. Description of Features and Principles of Operation

2-1 Principles of Operation

This unit determines the moisture and solid contents of samples by heating them using infrared illumination and measuring changes in mass due to evaporation. This is referred to as the loss on drying method and is the simplest method for determining moisture content and thus mandated by many public regulations related to measurement standards.

2-2 Features

 UniBloc sensor

The core of the scale is formed by a single-unit aluminum UniBloc*1 weight sensor which provides excellent responsiveness, temperature characteristics, and shock resistance. This UniBloc*

sensor ensures excellent reliability in moisture

content measurements even over extended use.

 New Auto Taring mechanism

The FD-720 comes with an internal Auto Taring mechanism which makes it possible to perform reset correction while performing measurements, thus eliminating drift of the scale even when performing measurements over long periods of time and making it possible to obtain extremely reliable measurements.

 Mid-infrared quartz heating lamp

The FD-720 uses a mid-infrared quartz heating lamp (with a central wavelength of 2.6 µm). This heater provides excellent drying efficiency over a wide range of different types of sample, makes it difficult for differences to occur as a result of the colors of different samples, and eliminates the overheating of sample surfaces, thus making it possible to obtain ideal drying conditions. What‘s more, this heating lamp also provides a long service life 5~10 times greater (20,000 to 30,000 hours*

) than

older infrared or halogen lamps.

 A wide selection of measuring modes

The FD-720 provides a wide selection of measuring modes (automatic halting mode, timed halting mode, high-speed drying mode, low-speed drying mode, stepped drying mode, and predictive measuring mode) which makes it possible to perform measurements under the drying conditions most appropriate to the drying characteristics of the sample being measured.

 The ability to store measuring conditions

The FD-720 provides 10 measuring conditions storage areas which may be used to store sets of measuring conditions to be used for different types of materials, thus reducing the amount of time involved in specifying settings before performing measurements.

 Data memory

The FD-720 is able to store up to 100 sets of measurement data in memory, thus making it possible to output large batches of data all at one time.

 Printer port

The FD-720 is equipped with a printer port which may be used to connect to a (separately sold) printer, thus making it possible to print out text or graph data showing final measurements, or intermediate drying states while performing measurements.

 Scale calibration

The scale of the FD-720 can be calibrated, and it is possible to print output during calibration meeting GLP, GMP, or ISO standards.

 The ability to display changes in moisture content (∆M) in a numeric and scalar display

The change (∆M) in moisture content over 30-second intervals is displayed in a numeric and scalar display, thus making it easier to estimate when a measurements should be completed. This feature is also useful in helping to determine measurement completion conditions.

*1 UniBlock is a product name of the Shimadzu Corporation. *2 Indicates actual measured time for operation of infrared heater. Your performance may vary.

2-3 Applications (i.e., materials which can be measured)

 Materials for which water is the only main component which evaporates as a result of heating  Materials for which no dangerous chemical reactions or other changes occur as a result of

heating

* Measurements can be performed using virtually any material meeting these conditions.

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3. Specifications

Measurement format : Evaporation weight loss method (Heat drying and weight loss method) Sample weight : 0.5~120 g using selective weight sampling method Minimum displayable units

: Moisture content (solids): 0.1% or 0.01% (selectable), Weight: 0.001 g Measurable quantities : Moisture content (wet base & dry base), weight, solid content Measurement range: : 0-100% (wet base, solids)

0-500% (dry base)

Reproducibility (Standard deviation)*

: Samples with a weight of 5 g or higher: 0.05%

Samples with a weight of 10 g or higher: 0.02%

*1When using standard samples and measuring conditions as determined

by Kett Electric Laboratory.

Measurement modes : Automatic halting mode

Timed halting mode (with measurement times of 1~240 minutes or continuous measurement mode, with a maximum measurement time of 12 hours) High-speed drying mode (may be used with either automatic or timed halting mode) Low-speed drying mode (may be used with either automatic or timed halting mode) Stepped drying mode (performs drying in 5 steps)

Predictive (comparative) measuring mode Temperature range : May be set within a range of 30~180°C in 1-degree increments Display : Backlit LCD display (137 x 43 mm) External output : RS-232C interface Communications : Data may be output from the Data Logger software KDL-01 (sold

separately) or similar software. Storage of measurement conditions

: Allows for storage of 10 sets of measurement conditions Data memory : Allows for storage of 100 sets of data Environmental conditions : Pollution degree 2, Altitude up to 2000 m Temperature/humidity operating range

: 5~40°C, maximum of 85% RH Heat source : Medium frequency infrared heater (200W x 2) Temperature sensor : Thermistor Power supply, Power consumption

: AC 100V~120V (50/60 Hz) 900W

AC 220V~240V (50/60 Hz) 900W

Weight and external dimensions

: 4.5 kg, 220 x 415 x 190 mm (W x D x H) Sample dish : SUS sample dish (Diameter: 130 mm; Depth 13 mm) Items included : 2 sample dishes, 2 sample dish handlers, wind shield, sample dish tray,

spoon & spatula set, 2 spare (T8A 250V) fuses, 2 packages of aluminum foil sheets (10 per package), operating manual

Optional equipment : Printer set (includes a VZ-330 printer, a printer interface cable (VZC-14),

printer paper, and an AC adapter), printer paper (10 rolls), package of aluminum foil sheets (500 sheets), RS-232C cable (VZC-52), Data Logger software KDL-01, TQ-100 sample crusher

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4. Names of Individual Parts and Components

4-1 Names of Parts of Main Unit

Handle

Observation window Temperature sensor

Heater lid

Display

Level

Heater

Wind shield

Sample dish

Sample dish handler

Control panel

Power conversion switch

Power switch

Power inlet Fuse holder

RS-232C port

Height adjustment legs

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4-2 Parts and Accessories

Sample dishes (2) Sample dish handler (2) Wind shield

Sample dish tray Spoon & spatula set Spare (T8A 250V) fuses (2)

(Power cord) (Three-prong plug adapter)

Operating manual

Packages of aluminum foil sheets (10 per package) (2)

Note: The shape of the power plug var ies in different countries.

The actual accessory may be different from the one in this illustration.

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5. Display and Control Panel

5-1 Display

Item

Name

Stability indicator Measuring complete indicator Heater on indicator Predictive measuring indicator Predictive measuring indicator (Lights

when performing comparative measurement)

Menu display

Measuring conditions display

Measuring conditions storage area display*

Measuring mode display* Predictive measurement convergence

conditions display*

Halt conditions display*

Drying temperature display* Bias display* Moisture/Solid/Weight display

Temperature display Measuring time display Change in moisture (solid) content

display Change in moisture (solid) content

scale display

Description

This indicator lights up when the internal scale is stable. This indicator lights up when measuring has been completed. This indicator flashes whenever the heater is turned on. This indicator lights up when performing predictive measurements. This indicator lights up when measuring has been completed after performing a comparative predictive

measurement.

Used to display individual menu items in sequence each time the key is pressed after pressing the key.

Flashes to display individual items in sequence each time the

key is pressed after pressing the

key. Values may be specified for a given item when it is flashing.

Used to display the number of the currently selected measuring conditions storage area.

Used to display the currently selected measuring mode. Used to display the conditions for convergence of measured values when operating in predictive or

comparative mode. When operating in high-speed drying mode, used to display the conditions required in order to maintain a high-speed drying temperature.

Used to display the currently selected halt conditions. When the value is displayed as a percentage, it indicates that measuring will halt automatically, and when value is displayed in minutes, it indicates that measuring will halt when the specified amount of time is reached.

Used to display the currently selected drying temperature. Used to display the moisture (or solid) bias. When measuring weight (i.e., when in idling mode), used to display the weight in grams. When

performing measurements, used to display the moisture content and solids content as percentages. When measuring weight, this display is also used to display ‘oL’ (i.e., overload) when the weight exceeds the maximum measurable weight and to display ‘–oL’ (i.e., no overload) when the weight does not exceed the maximum measurable weight.

Used to display the temperature under the heater lid. Used to display the amount of elapsed time during measuring. Used to display the change (∆M) in moisture (or solid) content at 30-second intervals during

measurement. Used to display the change (∆M) in moisture (or solid) content in scalar format. The scale may display a

maximum change of 2 percent/30 seconds.

* Items marked with an asterisk display as flashing items.

Display as it appears with the power on. (All display items shown.)

12 3$ % ^ 9 8

6 5

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5-2 Control Panel Operations

The control panel keys are used to perform the following operations.

Name

START/STOP key

TARE/RESET key

ENTER key

SELECT key

UP key / DOWN key

CONDITION key

MENU key

Operation

Used to start measuring or to abort a measuring operation. Also used to turn off the alarm which sounds to indicate that a measuring operation has been completed.

Used to deduct the tare weight. Also used to perform a reset after an error has occurred. Also used to return to display of weight after completion of measurement.

Used to confirm currently selected settings. When further settings must be specified, pressing the ENTER key causes the next specified item to be displayed; when there are no further settings to be selected, the specified setting is confirmed and takes effect.

Used to select different settings or setting values.

Used to change the value of different settings. Pressing the

key causes the value in question to increase, and pressing the key

causes the value in question to decrease.

Used to begin or end the specification of measuring conditions.

Used to begin or end the specification of menu settings.

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6. Assembly and Installation of Main Unit

1 Opening the package

Open the package and check to make sure all listed items are included.

Scale stopper

Sample dish panel

2 Installing the main unit

•Place the main unit on a flat, stable surface where it will not be subject to vibrations or exposed to drafts or breezes.

• Install the main unit so that it is at least 10cm from the wall both to the front and back and to the left and right. Make sure there is a space at least 30cm above the top of the heater cover.

•Do not use it in a closed installation environment. Depending on the sample, heating may produce hazardous substances. Install it in a location that can be adequately ventilated.

4 Checking the power settings

Check the power conversion switch located on the rear of the main unit to make sure that it is currently set to the proper voltage setting for your power source.

* Note that an error will occur if this switch is not set to

a position matching the power source being used.

Power conversion switch

3 Removing the stopper from the sample dish panel

When using the unit for the first time after purchase, remove the scale stopper attached below the sample dish panel as indicated in the accompanying diagram.

〜

100V 220V

120V 240V

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5 Level is located to the left of the control panel.

Knobs

Round holes

Stays

Sample dish panel

Grooves

Stay

8 Attaching the sample dish handler

Next, attach the sample dish handler, being sure when you do so that the grooves of the handler fit smoothly over the projection located at the rear of the wind shield.

* While the sample dish handler is shown with the

handle being placed to the right in the diagram shown here, the handle may be placed either to the left or right, and you should accordingly place the handle in the position you find easiest to use.

7 Attaching the sample dish tray

Place the sample dish tray gently into the sample dish panel at the center of the main unit, being sure when you do so that the round hole of the sample dish tray fit smoothly over the stay on the sample dish panel.

6 Installing the wind shield

Open the lid of the heater, hold the wind shield by the knobs on the top, and place it on top of the sample dish panel so that the two round holes in the wind shield fit over the stays of the sample dish panel.

*Place the wind shield firmly into position so that it

does not come into contact with the black projection located at the center of the main unit (sample dish panel).

5 Ensuring that the unit is level

Turn the two height adjustment legs located at both sides of the lower rear of the unit to adjust until the level bubble falls within the red circle.

* The level is located to the left of the control panel. The

tester is perfectly level if the bubble appears in the center of the red circle when viewed from directly above.

Not level Level

 Bubble

⇒

Height adjustment legs

Sample dish panel

Round hole

Stays

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9 Placing the sample dish into the tester

Please the sample dish gently down onto the sample dish tray.

0 Close the heater lid

! Connecting the power cord

Insert the female end of the power cord into the power inlet located at the rear of he unit. Then insert the power plug into the power outlet. Connect the plug to a power outlet in an easily accessed location so that it can be pulled out immediately if there are any problems with the infrared moisture tester. And be sure to always ground the main unit. If there is no grounding terminal on the power outlet, use a grounding adapter. The shape of the power plug varies in different countries. Use a power cord set suited to the shape of the plug that you actually use.

@ Connecting the printer (sold separately)

If you are using a printer, connect the printer using the provided printer interface cable. For instructions on how to use the printer, see the separately provided VZ-330 Printer User’s Manual.

Assembly is now complete.

* Some parts must be oriented in a fixed direction for

assembly. Note that placing parts in the wrong direction may result in errors in operation or in erroneous readings being obtained, and that you should take care that all parts are put into place in their proper positions.

Power cord inlet

Connector

Installation method

• When grounding with the connector

• When grounding with a grounding adapter

Power cord

Grounding terminal

Grounding terminal equipped power outlet

Grounding adapter

Grounding by screwing in the grounding adapter

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Tips on how to ensure accurate measurements

 Points to remember when conducting multiple measurements in succession

Placing a sample onto a sample dish which is already warm may cause moisture from the sample to evaporate before measuring is begun and cause errors to occur in measurement. Always be sure to use a cool sample dish when performing a second or subsequent measurements. You should also take care to allow an even amount of time to elapse between measurements, as errors in measurement may occur if the temperature of the internal scale of the unit does not remain at a constant level.

*Two sample dishes and two sample dish handlers are included.

 Use of sample dishes and aluminum foil sheets

It is impossible to obtain accurate measurements if residue from the sample last measured remains on the sample dish. To avoid such problems, either wipe the sample dish clean of any dirt or soil (see “15. Maintenance” on p. 64 for further instructions) or use disposable aluminum foil sheets to protect against residues, soil, or dirt.

*Twenty disposable aluminum foil sheets are included with the unit.

 Quantity and placement of powdered, particulate and viscous sample materials

The easier it is to heat the surface of a sample material, the easier it is for projecting portions of the material or for material at the top of a mound of material to become burnt. If the material is placed in a mound on the dish or if the material is not flat and evenly laid out, this is likely to happen, thus making it impossible to obtain accurate measurements. Note that while the precision of measurement improves the more flatly and evenly samples are placed and the higher the amount of sample material used, the quantity of sample material used is too great if the surface becomes burned before lower layers are fully dried. Always be sure to lay out samples flatly and evenly as indicated in the diagram below.

 Measuring liquid samples

Virtually all liquid materials will coagulate after being dried, and when working with such materials they should be placed on the provided sheets of aluminum foil. Note that these aluminum foil sheets are water-permeable, thus making it possible to obtain wide and even placement and making them effective for use in shortening measuring times and obtaining accurate measurements. Depending on the sample in question, the use of sand to speed up drying (Silica sand or ocean sand with a mesh of 20 or so) may be even more effective.

Proper placement

Incorrect placement

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 Crushing samples consisting of large particles before measuring

If samples consisting of large particles are measured in their original condition it not only takes longer for drying to completed to the center, but also may result in problems such as the surface of the sample becoming burned, thus making it impossible to obtain accurate measurements. For this reason you should always crush samples to an appropriate size. The TQ-100 Sample Crusher (sold separately) is excellent for this pur pose.

TQ-100 Sample Crusher

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8. How to Conduct Measurements

Before beginning a measurement, check to make sure that there is nothing remaining in the sample dish. Also be sure that all parts of the main unit are firmly fixed in place and be sure that the heater lid has been closed firmly before starting to perform measurements. Also be sure to check on a regular basis that the main unit is level and readjust the height adjustment legs if necessary. (See “6. Assembly and Installation of Main Unit” on p. 14 for instructions on how to do so.)

Display

* Display will show default settings at the

time of shipment. (See p. 24, “9-2-1 Selecting the CONDITIONS (Measuring conditions storage area)”.)

Operating instructions

1 Turn on the power switch

Turn on the power switch located at the rear of the unit. When you turn on the power for the first time after purchasing your tester, a tone will sound, the display will light up with all items lit and then change to display first ‘CHE5’ and then a string of dashes (i.e., ‘- - - - -’). At the bottom left of the display will be displayed the power settings specified (as described in step 4 of “6. Assembly and Installation of Main Unit” on p. 14) with the display reading ‘100V’ when the power settings have been set to 100~120V and reading ‘220V’ when they have been set to 220~240V.

If using the tester in a country that does not use 100V power, then this is the time when you should specify the power settings to be used. (See step 3 of “10-2-8 Specifying the power settings” on p. 47 for instruction on how to do so.)

* When using the tester in Japan, the settings should be left unchanged. Check

to make sure that the display reads ‘100V’ and then press the key. As the power setting continues to be displayed in the lower left of the display, the center of the display will change to display ‘CHE4’, ‘CHE3’, … , ‘CHE0’ and a tone will sound and the display will change to weight reading display mode.

* When the power is turned on for the second or subsequent times, a tone will

sound, the display will light up with all items lit, the display will change to display ‘CHE5’, ‘CHE4’, … , ‘CHE0’ while the currently specified power setting is displayed, and then a tone will sound again and the display will change to weight reading display mode.

* Note that it is recommended that you always turn on the tester about half an

hour before use in order to obtain consistent measurements.

2 Specifying settings

When performing measurements for the first time, or when you wish to change current settings before measuring, then you should specify the settings required for measuring here. (See “9. Specifying Measuring Conditions” on p. 23 and “10. Menu settings” on p. 36 for instructions on how to do so.)

3 Placing the sample dish in the tester

Open the heater lid, place the sample dish on the handler, and place the handler into the tester, being sure when you do so that the grooves of the handler fit smoothly over the projection located at the rear of the wind shield.

* If you have already placed the sample dish and handler (as described in “6.

Assembly and Installation of Main Unit”) then proceed directly to the next step.

* When using an aluminum foil sheet or other wrapping because of the nature of

the sample being measured, place the wrapping on top of the sample dish.

Grooves

Stays

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DisplayOperating instructions

4 Performing a tare

Shut the heater lid, check to make sure that the steady-state mark (

) is

displayed, and press the

key. A series of hyphens and the word ‘TARE’ will be displayed, the sample dish will move vertically and a tare will be performed. A sharp tone will then sound and the word ‘TARE’ will disappear from the display, a weight of ‘0.000 g’ will be displayed and the tare will then be complete.

* Always be sure that the heater lid is closed when performing a tare. Also make

sure that the tester is not exposed to drafts or breezes, or subjected to any vibrations when a tare is being performed.

5 Placing a sample in the tester

Open the lid to the heater and place the sample inside. Be sure to place the sample as flatly as possible into the tester so that heat is applied evenly to the sample during measurement. (See “7. Tips on how to ensure accurate measurements” on p. 17 for further information.)

6 Beginning measurement

Close the lid of the heater, check to make sure that the stability indicator (

)

is being displayed, and then press the

key. The display will switch from a display of the weight (i.e., grams) to a percentage display and the measuring time will be displayed. The heating indicator ( ) will start to flash and drying will begin.

* There may be times when the stability indicator ( ) is not displayed because of

external vibrations or drafts or breezes. While it is possible to perform measurements at such times, there may be cases when it is impossible to obtain accurate measurements at such times. You should always be sure to conduct measurements in a location as free as possible of vibrations, drafts, breezes, or any other harmful influences.

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DisplayOperating instructions

* Never open the lid to the heater while a measurement is in progress. Doing so

is not only hazardous but also could contribute to making it impossible to obtain accurate measurements. If it is absolutely necessary to open the lid to the heater while a measurement is in progress to view the sample material (or for some other reason) limit the time the lid is opened to 15 seconds or less. (A warning buzzer will sound 10 seconds after the lid is opened and if the lid remains open for more than 15 seconds, the measurement operation will be aborted and an ‘ER306’ error code will be displayed.)

* Pressing the

key while the heater lid is open will cause a safety alert

buzzer to sound and measuring to be stopped.

7 Measuring time display

While a measurement is being performed, the amount of time elapsed will be displayed in minutes.

* The change in moisture content over each 30-second interval is displayed

numerically and in scalar format (where the scalar display may display a maximum change of 2 percent/30 seconds).

* Weight is performed automatically once per minute (or once every 30 seconds

when near the end of the measuring time) while measuring moisture content.

* To stop measuring when in the midst of a measuring operation, press the

key.

8 Completion of measurement

When the measuring operation has been completed, the heating indicator (

) will disappear, the measurement completed indicator ( ) will be displayed, and a tone will ring for a period of 10 seconds. To turn off the tone, press the

key. The results of the measurement will be

displayed and remain displayed on the display.

* If the unit is connected to a printer (sold separately), pressing the key

while a hold message is being displayed will cause the signature field to be printed. (See “13-1 Sample Printer Output” on p. 56 for further information.)

9 Resetting the display

Pressing the

key at this point causes the display of the results of the measurement (i.e., moisture content) to disappear and be replaced by a display of the weight of the sample after drying.

* Note that a reset cannot be performed until the completion tone has stopped

ringing.

0 Disposing of samples after measurement

Open the lid to the heater, raise the handler vertically, remove the sample dish, and dispose of the sample.

* Note that the sample and sample dish may be very hot and you should

accordingly be careful in handling them at this time.

Page 22

Operating instructions

! Prepairing to perform the next measurement

Leave the lid to the heater open to allow the tester to cool. When performing sequential measurements, leave an interval of about 1-2 minutes between each measurement and make sure that the tester has cooled before proceeding to the next measurement. You should also keep a spare (cooled) sample dish available to use in the next measurement. (See “7. Tips on how to ensure accurate measurements” on p. 17 for further information.) When ready, return to step 3 and begin the next measurement.

@ Turning off the power

When all the measurements have been completed, pull the power plug from the power outlet. And when not using the main unit, always pull the power plug from the power outlet.

Display

Page 23

9. Specifying Measuring Conditions

When using this tester to measure moisture or solid content, it is necessary to first specify the conditions (e.g., drying temperature or measuring mode) to be used in performing the measurement. The settings which may be specified are as described below. When necessary, it is also possible to save sets of measuring conditions (i.e., drying temperature, measuring mode, and bias).

9-1 Types of Settings

Description

Used to select the area to which measuring conditions are to be stored. There are 10 storage areas labeled from 0 to 9. (See p. 24, “9-2-1 Selecting the CONDITIONS (Measuring conditions storage area)”.)

In automatic halting mode, measuring is brought to a halt whenever the change in moisture content over two consecutive 30-second periods falls below the specified conditions for automatic halting. (For further information, see 9-2-2 “1) Specifying settings for AUTO (Automatic halting) mode” on p. 25.)

Causes measuring to be completed when the specified amount of time has elapsed. (For further information, see 9-2-2 “2) Specifying settings for TIME (Timed halting) mode” on p. 26.)

Causes the sample material to be rapidly dried until the amount of change in moisture content over a period of 30 seconds falls below the specified quantity and for drying to then be continued at the specified drying temperature. (For further information, see 9-2-2 “3) Specifying settings for RAPID (High-speed drying) mode” on p. 27.)

In low-speed drying mode, the temperature is raised more gradually than when performing measurements under normal conditions, with it taking about 5 minutes from the time when measuring begins until the temperature reaches the specified drying temperature. (For further information, see 9-2-2 “4) Specifying settings for SLOW (Low-speed drying) mode” on p. 29.)

In stepped drying mode it is possible to specify a separate drying temperature and separate measuring time over up to 5 step intervals. (For further information, see 9-2-2 “5) Specifying settings for STEP (Stepped drying) mode” on p. 30.)

Comparative measuring mode is used to measure the bias (i.e., the difference between the measurement corresponding to that obtained in automatic halting mode and the predicted measurement value) needed in order to perform measurements in predictive measuring mode. (For further information, see 9-2-2 “6) Specifying settings for COMPARE (Comparative measuring) mode” on p. 32.)

In predictive measuring mode, the intermediate results of drying are used to predict future changes and to calculate the predicted measurement and thereby shorten the amount of time used in measurement. (For further information, see 9-2-2 “7) Specifying settings for PREDICT (Predictive measuring) mode” on p. 33.)

This parameter may be used to specify the drying temperature. The temperature may be set anywhere within a range of from 30°C to 180°C in 1-degree increments. (For further information, see “9-2-3 TEMP (Drying temperature)” on p. 34.)

This parameter is used to specify a numeric value to be used to correct measurements for bias. A bias anywhere in the range of from –9.99% to 9.99% may be specified in 0.01% increments. (For further information, see “9-2-4 Bias” on p. 35.)

Display during

specification of setting

CONDITION 0~9

(Measuring conditions storage areas 0~9)

AUT

(AUTO: Automatic halting mode)

TIM

(TIME: Timed halting mode)

RPD

(RAPID: High-speed drying mode)

SLW

(SLOW: Low-speed drying mode)

STP

(STEP: Stepped drying mode)

CMP

(COMPARE: Comparative measuring mode)

PRD

(PREDICT: Predictive measuring mode)

○○○

○.○○

Setting

CONDITION

MODE

(Measuring mode)

TEMP

(Drying temperature)

BIAS

(Bias value)

9-2 Descriptions of Individual Measuring Condition Settings

For a detailed description of individual measuring condition settings, see the instructions on how to specify the settings for each item in subsection 9-2-1 and subsequent subsections.

1 To start specifying measuring condition settings:

Press the

key at a time when the display shows a weight reading.

2 If any password other than the default password of ‘0000’ has been specified, then a ‘PASS’ message will be displayed in

the weight display area. When this message is displayed, follow the instructions provided on p. 46, “10-2-7 Specifying a password”, to enter a password. If the password entered is incorrect, the display will return to the weight display.

3 Selecting individual measuring conditions:

First a ‘CONDITIONS’ message will flash on the display. Pressing the

key at this time causes the flashing item to change in sequence from MODE to TEMP to BIAS to CONDITIONS and back to MODE and so on each time the key is pressed. When the item for which you wish to specify settings is flashing, press the key. At this point it will be possible to specify the settings for the flashing item.

4 To finish specifying measuring condition settings:

Pressing the

key at a time when any settings item is flashing causes the settings specified to take effect and cause

the display to return to the normal weight display.

Page 24

9-2-1 Selecting the CONDITIONS (Measuring conditions storage area)

Below is described the procedure used to select the area in which measuring conditions are to be saved. This operation causes the measuring mode, drying temperature, bias, and other currently specified measuring conditions to be saved to the selected area.

* At the time of shipment, the following settings are stored in measuring conditions storage areas 0~9:

Measurement standard : Wet Base Drying temperature : 120°C Measuring mode : Automatic halting mode (Change in water content of 0.05% over

30seconds)

Bias : 0.00%

 Specifying settings for the CONDITIONS (Measuring conditions storage area)

Key(s) used

Operating instructions

With the display displaying the weight in grams, press the key.

If a password has been specified, the message ‘PASS’ will be displayed to indicate that a password should be entered. Follow the instructions in “10-2-7 Specifying a password” on p. 46 to enter the password.

The ‘CONDITIONS’ display area will begin to flash.

Press the key. This will cause the highlight to move to the measuring conditions area number and for the measuring conditions area number to begin to flash.

Press the key or key to select a measuring conditions area number from 0 to 9. In this example, we selected area number ‘5’.

When the desired measuring conditions area number starts flashing, press the

key. The selected measuring conditions area number will change from a flashing to a constantly lit display and the ‘CONDITIONS’ message will begin to flash instead.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified. To exit from

specifying measuring conditions settings, press the

key

instead.

Step

Display

Page 25

9-2-2 Selecting the MODE (Measuring mode)

The ‘MODE’ (measuring mode) setting is used to specify the conditions under which measuring is to be completed. As shown in the table in subsection “9-1 Types of Settings”, the mode may be set to one of seven methods.

1) Specifying settings for AUTO (Automatic halting) mode

In automatic mode, measurement is brought to completion when the amount of change in moisture content over a period of 30 seconds falls to a level below a specified threshold level. The automatic halting threshold level may be specified in 0.01-percent increments from 0.01 to 0.1percent. Specifying a smaller percentage causes measurements to approach a point of equilibrium, but more time is then required for measurement. Specifying a higher percentage lessens the amount of time required for measurement, but measuring is completed while there may still be a wide variation in measurements. The automatic halting conditions should be specified in accordance with your objectives and the type of sample being measured.

Change in moisture content ∆M

Measurement (%)

30 seconds

Measuring time

Key(s) used

Operating instructions

With the display displaying the weight in grams, press the key.

The ‘CONDITIONS’ display area will begin to flash. Press the

key until ‘MODE’ begins to flash.

With the ‘MODE’ display area flashing, press the key. This will cause the highlight to shift to measuring mode selection and for the currently specified measuring mode to begin flashing.

Press the key until ‘AUT’ begins to flash.

* Since ‘AUT’ will already be flashing at the point, proceed directly

to the next step.

When ‘AUT’ begins to flash, press the key. This will cause the automatic halting mode settings to become active and for the automatic halt conditions (i.e., amount of change in moisture content per 30 seconds) to begin flashing.

Press the

key or key to select the automatic halt

conditions. Note that here we specify a setting of 0.1 percent.

When the desired automatic halt conditions setting begins to flash, press the

key. The automatic halt conditions setting will change from a flashing to a constantly lit display and ‘MODE’ will begin to flash instead.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified. To exit from

specifying measuring conditions settings, press the

key

instead.

Step

Display

Page 26

2) Specifying settings for TIME (Timed halting) mode

In timed halting mode, the measuring time is specified before the test and the sample is dried to determine its moisture (or solid) content. When the specified measuring time is reached, the test is halted. Measuring time may be specified in 1-minute increments anywhere in a range from 1 to 240 minutes or measuring may be specified to be performed over a continuous period of 12 hours.

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

The ‘CONDITIONS’ display area will begin to flash. Press the

key until ‘MODE’ begins to flash.

With the ‘MODE’ display area flashing, press the key. This will cause the highlight to shift to measuring mode selection and for the currently specified measuring mode to begin flashing.

Press the key until ‘TIM’ begins to flash.

* If ‘TIM’ is already flashing, then proceed directly on to the next

step.

When ‘TIM’ begins to flash, press the key. This will cause the measuring time settings to become active and for the currently specified measuring time to begin to flash.

Press the key or key to select the desired measuring time. Note that here a time of ‘30 minutes’ is specified.

When the desired measuring time begins flashing, press the

key. The specified measuring time will change from a flashing to a constantly lit display and ‘MODE’ will begin to flash instead.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified. To exit from

specifying measuring conditions settings, press the

key

instead.

Step

Display

Page 27

3) Specifying settings for RAPID (High-speed drying) mode

During the initial phase of measurement, the material is dried at a temperature higher than the specified drying temperature to speed up drying and reduce the amount of time required for performing measurements. Once drying has proceeded to a sufficient point, the temperature is returned to the specified temperature and drying is continued at that temperature to help prevent burning.

In this mode, it is necessary to specify the drying temperature to be used during the initial phase of measurement (i.e., the rapid drying temperature) and the amount of change in moisture content over a 30second interval needed to maintain that temperature (i.e., the conditions under which the rapid drying temperature is to be maintained). Rapid drying will continue to be performed until the change in moisture content over a 30-second interval (∆M) falls to a level below the specified level at which rapid drying conditions are to be maintained, and after that drying will continue at the specified drying temperature.

The amount of change in moisture content over which rapid drying is to be continued may be specified in

0.1-percent increments from 0.1 to 9.9 percent.

* Note that a higher value should be specified for the rapid drying temperature than the regular drying

temperature.

* Note that it may take a considerable amount of time for the temperature to be lowered from the rapid drying

temperature to the regular drying temperature.

Specifying a relatively low degree of change in moisture content or specifying a high rapid drying temperature may reduce the amount of time required to perform a measurement, but depending on the sample material being measured doing so could result in the material becoming burnt or make it impossible to obtain accurate measurements. Conversely, specifying a relatively high degree of change in moisture content or specifying a low rapid drying temperature could make it difficult to obtain the effects expected from performing rapid drying. Either AUTO (automatic halting) or TIME (timed halting) may be specified as the halt condition.

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

The ‘CONDITIONS’ display area will begin to flash. Press the

key until ‘MODE’ begins to flash.

With the ‘MODE’ display area flashing, press the key. This will cause the highlight to shift to measuring mode selection and for the currently specified measuring mode to begin flashing.

Press the key until ‘RPD’ begins to flash.

* If ‘RPD’ is already flashing, then proceed directly on to the next

step.

When ‘RPD’ begins to flash, press the key. The highlight will then be transferred to the specification of the rapid drying temperature and the numeric display will begin to flash.

Press the key or key to select the rapid drying temperature maintenance conditions. In this example we have specified a degree of change of 0.7%.

Step

Display

Page 28

DisplayKey(s) used Operating instructions

When the desired the rapid drying temperature maintenance conditions begins to flash, press the

key. The high-speed settings will then be set and the highlight will shift to the selection of the halting conditions. The units area for timed halting mode (‘min’) or automatic halting mode (‘%’) will begin to flash.

Pressing the

key will cause the units to switch between

minutes (‘min’) and a percentage (‘%’). Press the

key until

the desired units are displayed.

When the desired units for the halting conditions (i.e., minutes or a percentage) begin to flash, press the

key. This will cause the highlight to shift to the specification of the halting conditions and the numerical field begin to flash.

Press the

key or key to select the desired halting conditions. In this example, timed halting (20 minutes) is specified.

When the desired time or percentage flashes, press the key. The temperature field with a value of 180°C or the rapid drying temperature last specified will begin to flash. (The initial default values is 180°C.)

Press the

key or key to select the rapid drying temperature. In this example the temperature is set to 140°C.

When the desired rapid drying temperature is displayed, press the

key. The press the ‘MODE’ field will then begin to flash.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified. To exit from

specifying measuring conditions settings, press the

key

instead.

Step

Page 29

4) Specifying settings for SLOW (Low-speed drying) mode

In low-speed drying mode, the temperature is raised more gradually than when performing measurements under normal conditions, with it taking about 5 minutes from the time when measuring begins until the temperature reaches the specified drying temperature. Either ‘AUTO’ (automatic halting mode) or ‘TIME’ (timed halting mode) may be specified to define the conditions under which measuring is to be halted.

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

The ‘CONDITIONS’ display area will begin to flash. Press the

key until ‘MODE’ begins to flash.

With the ‘MODE’ display area flashing, press the key. This will cause the highlight to shift to measuring mode selection and for the currently specified measuring mode to begin flashing.

Press the key until ‘SLW’ begins to flash.

* If ‘SLW’ is already flashing, then proceed directly on to the next

step.

When ‘SLW’ begins to flash, press the key. The highlight will then shift to specification of low-speed drying mode settings where the halting conditions must be specified. The units area for timed halting mode (‘min’) or automatic halting mode (‘%’) will begin to flash.

Pressing the

key will cause the units to switch between

minutes (‘min’) and a percentage (‘%’). Press the

key until

the desired units are displayed.

When the desired units for the halting conditions (i.e., minutes or a percentage) begin to flash, press the

key. This will cause the highlight to shift to the specification of the halting conditions and the numerical field begin to flash.

Press the

key or key to select the desired halting conditions. In this example, timed halting (20 minutes) is specified.

When the desired time or percentage flashes, press the key. The specified halting conditions will then change from flashing to a constantly lit display and ‘MODE’ will begin to flash.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified.

To exit from specifying measuring conditions settings, press the

key instead.

Step

Display

Page 30

5) Specifying settings for STEP (Stepped drying) mode

In stepped drying mode it is possible to specify separate measuring conditions for up to a maximum of 5 steps. Specifying a separate drying temperature and separate measuring time for each step makes it possible to specify finer-grained sets of measuring conditions. In Step 1, timed halting mode must be specified as the mode used to define halting conditions. In Step 2 and subsequent steps, it is possible to select between either automatic halting mode or timed halting mode.

* If automatic halting mode is selected as the mode to be used in Step 2 or later, that step becomes the final step.

Similarly, when timed halting mode is selected and a value of ‘0’ is specified as the measuring time, the previous step becomes the final step.

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

The ‘CONDITIONS’ display area will begin to flash. Press the

key until ‘MODE’ begins to flash.

With the ‘MODE’ display area flashing, press the key. This will cause the highlight to shift to measuring mode selection and for the currently specified measuring mode to begin flashing.

Press the key until ‘STP’ begins to flash.

* If ‘STP’ is already flashing, then proceed directly on to the next

step.

When ‘STP’ begins to flash, press the key. This will cause ‘STP’ to change from a flashing to a constantly lit display, for the highlight to shift to the specification of the measuring time for Step 1, and for the measuring time to begin to flash.

Press the

key or key to select the desired measuring time. The time may be set to a length of anywhere from 1 to 240 minutes in 1 minute increments. Note that here a time of 20 minutes has been specified.

When the desired measuring time flashes, press the

key. The measuring time will change from a flashing to a constantly lit display the highlight will shift to the specification of the drying temperature, and the drying temperature will begin to flash.

Press the

key or key to select the desired drying temperature. The temperature may be set to a temperature of anywhere from 30 to 180°C in 1 degree increments. Note that here a temperature of 105°C has been specified.

When the desired drying temperature flashes, press the key. The step displayed will change from ‘STP 1’ to ‘STP 2’ and the units area for timed halting mode (‘min’) or automatic halting mode (‘%’) will begin to flash.

Step

Display

Page 31

Key(s) usedStep

Operating instructions

Pressing the key will cause the units to switch between minutes (‘min’) and a percentage (‘%’). Press the

key until

the desired units are displayed.

When the desired units for the halting conditions (i.e., minutes or a percentage) begin to flash, press the

key. This will cause the highlight to shift to the specification of the halting conditions and the numerical field begin to flash.

* Note that this step becomes the final step if automatic halting

mode (i.e., a percentage) is specified here.

Press the key or key to select the desired halting conditions. Note that here a time of 20 minutes has been specified. (When automatic halting has been specified as the operation mode, the degree of change in moisture content may be specified as anywhere from 0.01 to 0.1percent in 0.01-percent increments.)

* Note that the previous step becomes the final step if timed halting

mode has been selected and a measuring time of ‘0’ is specified here.

* Note that it is impossible to perform continuous measurement

(over 12 hours) in this mode. The maximum drying time for each step is 240 minutes.

When the desired halting conditions begin to flash, press the

key. This will the display of the halting conditions to change from a flashing to a constantly lit display, for the highlight to shift to the specification of the drying temperature for Step 2, and for the drying temperature to begin to flash.

Press the

key or key to select the desired drying temperature. Note that here a temperature of 100°C has been specified.

When the desired drying temperature is displayed, press the

key. The step displayed will change from ‘STP 2’ to ‘STP 3’ and control will shift to the specification of halting conditions. At this point, you must go back to step ! and repeat all subsequent steps up to this step until settings have been specified for all steps up to the final step.

When the settings for the final step have been specified, ‘MODE’ will begin to flash.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified.

To exit from specifying measuring conditions settings, press the

key instead.

. . . . .

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Page 32

6) Specifying settings for COMPARE (Comparative measuring) mode

Comparative measuring mode is used to calculate the bias (i.e., the difference between the predicted measurement and the measurement which would be obtained when operating in automatic halting mode) needed when conducting predictive measurements. When conducting predictive measurements, this mode should be used first to calculate the bias. (For further information, see “ Comparative measuring mode” and “ Predictive measuring mode” on p. 51.)

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

The ‘CONDITIONS’ display area will begin to flash. Press the

key until ‘MODE’ begins to flash.

With the ‘MODE’ display area flashing, press the key. This will cause the display to shift to measuring mode selection and for the currently specified measuring mode to begin flashing.

Press the key until ‘CMP’ begins to flash.

* If ‘CMP’ is already flashing, then proceed directly on to the next

step.

When ‘CMP’ begins to flash, press the key. ‘CMP’ will change from a flashing to a constantly lit display and you will next be required to specify the predicted value convergence range settings (see “ Predicted value convergence range” on p. 50). The current setting for the predicted value convergence range will begin to flash.

Press the

key or key to specify the desired value. A

value of anywhere from 0.1 to 9.9 percent may be specified in

0.1-percent increments. Note that here a value of 0.5% has been selected.

When the desired value is displayed, press the

key. The flashing display of the predicted value convergence range will change from a flashing to a constantly lit display, and the display will shift to the automatic halting settings, and the setting specifying the degree of change in moisture content over a 30second period will begin to flash.

Press the

key or key to select the desired automatic halting conditions. A value of anywhere from 0.01 to 0.1 percent may be specified in 0.01-percent increments. Note that here a value of 0.05% has been selected.

When the desired automatic halting conditions have been selected, press the

key. The specified setting will change from a flashing to a constantly lit display, and ‘MODE’ will begin to flash.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified.

To exit from specifying measuring conditions settings, press the

key instead.

Step

Display

Page 33

7) Specifying settings for PREDICT (Predictive measuring) mode

This mode is designed for use in reducing the amount of time required for performing measurements by calculating a predicted final measurement from data obtained on changes in moisture content while drying is still in progress. Note that some materials have properties which make it difficult to obtain accurate predictions. Also note that predictive measuring mode should to be used only after conducting measurements in comparative measuring mode to check the precision of measurement and the possible effectiveness in terms of shortening the measuring time.

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

The ‘CONDITIONS’ display area will begin to flash. Press the

key until ‘MODE’ begins to flash.

With the ‘MODE’ display area flashing, press the key. This will cause the highlight to shift to measuring mode selection and for the currently specified measuring mode to begin flashing.

Press the key until ‘PRD’ begins to flash.

* If ‘PRD’ is already flashing, then proceed directly on to the next

step.

When ‘PRD’ begins to flash, press the key. ‘PRD’ will then change from a flashing to a constantly lit display and you will next be required to specify the predicted value convergence range settings (see “ Predicted value convergence range” on p. 50). The current setting for the predicted value convergence range will begin to flash.

Press the

key or key to select the desired automatic halting conditions. A value of anywhere from 0.1 to 9.9 percent may be specified in 0.1-percent increments. Note that here a value of 0.5% has been selected.

When the desired automatic halting conditions have been selected, press the

key. The specified setting will change from a flashing to a constantly lit display, and ‘MODE’ will begin to flash.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified.

To exit from specifying measuring conditions settings, press the

key instead.

Step

Display

Page 34

 Specifying settings for the TEMP (Drying temperature)

9-2-3 TEMP (Drying temperature)

The following describes the procedure to be followed to specify the drying temperature to be used in drying samples when conducting measurements. While the drying temperature is set to 120°C as the default temperature at the time of shipment, depending on the type of sample, its moisture content, or other conditions, the proper drying temperature to use may vary. To find the proper drying temperatures to be used for different types of materials, conduct repeated measurements until you find the correct temperature to use for each type of material. The temperature may be set to a temperature of anywhere from 30 to 180°C in 1-degree increments.

* Note that the drying temperature does not refer to the temperature of the material being tested but is

instead the temperature detected by the temperature sensor, and the drying temperature may differ from the temperature of the material being dried depending on the material’s color, moisture content, type, or shape.

* Generally speaking, drying is performed more quickly when a higher drying temperature is specified,

but if the temperature specified is too high it might result in the sample becoming burned, thus making it impossible to obtain accurate measurements.

* Note that the meaning of the term ‘drying temperature’ as it is specified here differs from that of the

drying temperature for earlier models (e.g., the FD-600/620/100/230/240).

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

The ‘CONDITIONS’ display area will begin to flash. Press the

key until ‘TEMP’ begins to flash.

With the ‘TEMP’ indicator flashing, press the key. This will cause the highlight to shift to specification of the drying temperature and the currently specified drying temperature to begin to flash.

Press the

key or key to select the desired drying temperature. Note that here a temperature of 105°C has been specified.

When the desired drying temperature begins to flash, press the

key. The display of the specified temperature will change from a flashing to a constantly lit display and the ‘TEMP’ indicator will begin to flash instead.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified.

To exit from specifying measuring conditions settings, press the

key instead.

Step

Display

Page 35

9-2-4 Bias

When necessary measurements should and can be corrected for bias. The bias may be specified with a value of anywhere from -9.99 to 9.99% in 0.01% increments. A bias should be specified in cases like those described below.

 Many different conditions sometimes result in measured values (as measured using the FD-

720) failing to meet with expected (standard) values. When this happens, a bias may be set to correlate the value as measured by the FD-720 and the expected (standard) value.

• In most cases it is possible to change the measuring conditions used to make the measurements obtained using the FD-720 to match the expected (standard) values, but when such conditions would cause the sample to be burned, would cause the time required for measurement to become too long, or otherwise result in problems, a bias should be specified instead.

 When using more than one unit, there may be times when it is impossible to obtain identical

measurements even when the same measuring conditions are used, because of differences in the locations where the units are placed or because of differences in the surrounding environment. In such cases, the bias of the unit that is to serve as the standard should be set to zero and the bias of the other units set to account for any such differences.

• For information on how to specify the bias when operating in predictive measurement mode, see p. 52, “12-2-1 Calculating the bias to be specified when operating in predictive measurement mode”.

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

The ‘CONDITIONS’ display area will begin to flash. Press the

key until ‘BIAS’ begins to flash.

With the ‘BIAS’ indicator flashing, press the key. The highlight will then shift to the bias specification, and the currently specified bias value will begin to flash.

Press the key or key to select the desired bias. Note that here a bias of 0.2% has been specified.

When the desired bias is displayed, press the key. The display of the specified bias will change from a flashing to a constantly lit display, and ‘BIAS’ will begin to flash instead.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified.

To exit from specifying measuring conditions settings, press the

key instead.

Step

 How to set the bias

Display

Page 36

10. Menu Settings

Measurement standards, output data formats, and other parameters may be selected as needed. Always be sure to specify the desired settings before performing measurements. When changing settings, the same procedure is followed as when specifying settings for the first time. All specified settings will be retained in internal memory, so it is not necessary to specify settings when performing a new measurement.

10-1 Types of Menu Settings

Description

Used to select one of three possible measurement bases. The minimum units of display for moisture content may also be specified here. (For further information, see “10-21 Selecting units (measurement standard and minimum display units)” on p. 37.)

Used to specify the format in which data is to be output to a printer or computer. The user may select the destination to which output is to be directed and the format in which data is to be output. When graph output (‘GRP’) has been selected, it is also possible to specify the minimum and maximum values to be used in the range of measurements. (For further information, see “10-2-2 Specifying the type and format of output” on p. 38.)

Used to specify the sample code to be output to printer or computer. (For further information, see “10-2-3 Specifying sample codes” on p. 41.)

Used to set the internal clock. This date and time is output as the ‘Measurement time’ printed together with any output data written to a printer or computer. (For further information, see “10-2-4 Setting the date and time” on p.

42.) Used to calibrate the internal scale. (For further

information, see “10-2-5 CAL (Scale calibration)” on p. 43.)

Menu display (Menu items)

Display 1 Display 2

MW (Wet base) MD (Dry base) SOL (Solid)

Display 1 Display 2 Display 3

30S (30 secs.)

(Output to computer)

1M (1 min.)

TBL

(Output in

2M (2 min.)

tabular format to printer)

5M (5 min.)

GRP

(Output as

10M (10 min.) ○.○○%

graph to printer)

FIN (Final result)

○.○○%

○○○○

Display 1 Display 2 Display 3 Display 4

YMD Year Month/Day Time MDY Month/Day Year Time DMY Day/Month Year Time

UNIT

(Measurement standard minimum display unit)

OUTPUT

(Measurement data output)

CODE

(Sample code)

DATE

(Date & time)

CAL

(Calibration)

* In addition to these settings, it is also possible to specify other settings such as the device ID (see “10-2-6

Specifying a device ID” on p. 45) or password (see “10-2-7 Specifying a password" on p. 46).

10-2 Descriptions of Individual Menu Items

Descriptions of individual menu items are given in subsection 10-2-1 and below.

1 Calling up menu settings: To call up menu settings, press the key from the weight display. 2 Selecting individual menu items: When the key is pressed, the menu item ‘UNIT’ will light up.

Pressing the key here causes the menu item lit up to change from ‘UNIT’ to ‘OUTPUT’ to ‘CODE’ to ‘DATE’ to ‘CAL’ and back to ‘UNIT’ in sequence each time the key is pressed. When the item of

interest is displayed, press the key. The settings for the selected item may then be specified.

3 Exiting from menu settings: Pressing the key when any menu item is currently lit up exits from menu

settings mode and returns to the regular weight display screen.

0.01

0.1

Page 37

10-2-1 Selecting units (measurement standard and minimum display units)

1) Selecting the measurement standard

This is used to select and specify the measurement standards to be used when performing measurements. There are three different types of measurement standards: measuring by changes in wet content, measuring by changes in dry content, and measuring by changes in solid content. The standard selected should be chosen in accordance with the type of material being measured.

2) Selecting the minimum units of display

Select whether the least significant digit to be displayed is to be ‘0.1%’ or ‘0.01%’.

* Note that the minimum unit of display has no effect when performing comparative measurements.

 How to select a measurement standard and minimum display units

Notation used in formulas: W: Wet weight before measurement D: Dry weight after measurement

(While a measurement is being performed, the weight at each point in time is used as the dry weight in calculating measurements.)

Type

Wet Base

Dry Base

Solid

Description

Percentage of evaporated moisture weight with respect to the weight before drying.

Percentage of evaporated moisture weight with respect to the weight after drying.

Percentage of residual weight after drying with respect to the weight before drying.

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

The ‘UNIT’ menu item will light up and the currently selected measurement base will be displayed.

Press the key. This will cause the highlight to shift to specification of ‘UNIT’ settings and for the currently selected measurement base to begin to flash.

Press the key until the desired measurement base is displayed. The flashing item will change from ‘MW’ to ‘MD’ to ‘SOL’ and back to ‘MW’ again in sequence each time the key is pressed. Note that here a wet base (‘MW’) has been selected.

When the desired measurement base begins to flash, press the

key. The currently selected minimum unit of display will

begin flashing.

Press the key to select the desired minimum unit of display. Pressing the

key will cause the displayed units to change from 0.01 to 0.1 and back to 0.01 again. In this example, we have specified units of 0.1%.

Step

Formula

W – D

x 100 (%)

W – D

x 100 (%)

D D

x 100 (%)

Menu display

SOL

Display

Page 38

10-2-2 Specifying the type and format of output

The FD-720 may be connected to a separately sold printer or computer so that measurement data can be output to the printer or computer.

1 There are three types of output formats or output destinations as shown in the table below.

Description

This is the setting which should be selected when using the Data Logger software KDL-01 or some other software to output data through the RS-232C interface.

This setting causes numeric output to be printed to a separately-sold printer.

This setting causes graph output to be printed to a separately-sold printer.

Output format

Numeric

Graph

Menu display

TBL

GRP

2 Any one of the six output intervals shown below may be selected to specify the frequency at which output is

to be generated.

The output interval specifies the amount of time which is allowed to elapse during measurement before the next set of output is generated. When there is no need to view intermediate data from before the time when the measurement is completed, ‘FIN’ may be selected so that only the final results are output.

* ‘FIN’ should never be selected when graph output has been selected when operating in comparative measuring

mode as that would result in no predicted measurements being output.

Output interval Menu display

Every 30 seconds 30S

Every minute 1M Every 2 minutes 2M Every 5 minutes 5M

Every 10 minutes 10M

Final results only FIN

3 When graph output has been selected, it is possible to specify the maximum and minimum values of the

range of values to be measured in 5-percent increments.

Range of values to be measured

Minimum: From 0 to (Maximum –5%) (Specified in 5-percent increments; may be

set to any value from 0~95%.)

Maximum: From (Minimum +5%) to 100 (Specified in 5-percent increments; may

be set to any value from 5~100%.)

Minimum: From 0 to (Maximum –5%) (Specified in 5-percent increments; may be

set to any value from 0~495%.)

Maximum: From (Minimum +5%) to 500 (Specified in 5-percent increments; may

be set to any value from 5~500%.)

Output destination

Computer

Printer

Measurement base

Wet base (%), Solid (%)

Dry base (%)

Key(s) used Operating instructions

When the desired minimum units of display begins flashing, press the

key. The minimum unit of display will then have been

set and control will return to procedure 2.

If you wish to specify other menu settings, press the key to select the desired menu item. If you wish to exit from specifying menu settings, press the key.

Step

Display

Page 39

 How to specify the output format to be used

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

Press the key until the ‘OUTPUT’ menu item is displayed.

Press the key. This will cause the highlight to be shifted to the output settings and cause the currently selected output destination to begin to flash.

Press the key until the desired output destination has been selected. Pressing the

key here causes the menu item lit up to change from ‘TBL’ to ‘GRP’ to ‘PC’ and back to ‘TBL’ in sequence each time the

key is pressed. Note that here

‘TBL’ has been selected. When the desired output destination begins flashing, press the

key. This will cause the highlight to shift to the specification of the output interval and for the currently specified output interval to begin to flash.

Press the

key until the desired output interval has been

selected. Pressing the

key here causes the menu item lit up to change from ‘30S’ to ‘1M’ to ‘2M’ to ‘5M’ to ‘10M’ to ‘FIN’ and back to ‘30S’ in sequence each time the

key is pressed.

Note that here an interval of ‘1M’ has been selected. When the desired output interval begins to flash, press the

key. The next step to be performed here differs depending on the output destination specified in step 4.

Procedure performed if ‘TBL’ or ‘PC’ has been selected:

The currently specified output destination will be displayed and the display will return to the state shown in step 2. If you wish to specify other menu settings, press the

key to select the desired menu item. If you wish to exit from specifying menu settings, press the

key.

Procedure performed if ‘GRP’ has been selected:

Control will shift to the specification of the range of measurement values described in step 8 and thereafter.

Step

Display

Page 40

Specifying the range of measurement values to be used (when ‘GRP’ has been selected)

Key(s) used Operating instructions

The currently selected minimum for the range of measurement values will begin to flash.

Press the key or key until the desired minimum is displayed. Note that here a value of ‘5%’ has been selected.

When the desired minimum begins to flash, press the key. The will cause the maximum for the range of measurement values to begin to flash.

Press the key or key until the desired maximum is displayed. Note that here a value of ‘20%’ has been selected.

When the desired maximum begins to flash, press the key. The currently specified output destination will be displayed and the display will return to the state shown in step 2. If you wish to specify other menu settings, press the

key to select the desired menu item. If you wish to exit from specifying menu settings, press the key.

Step

Display

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10-2-3 Specifying sample codes

This section describes how to specify sample codes to be used when outputting measurements to a printer or computer. Sample codes may be specified as 4-character codes.  Any digit from 0~9, and letter from A~Z, or a hyphen (i.e., ‘—’) may be specified as the value of

the first or second character of the code.

 Only digits from 0~9 may be specified as the value of the third or fourth character of the code.

* The digits in the third and fourth characters of the code are automatically incremented after each

measurement, with the value returning to ‘00’ when it would otherwise exceed a value of ‘99’.

 How to specify sample codes

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

Press the key until the ‘CODE’ menu item is displayed.

Press the key. The highlight will then shift to the specification of the sample code and the first character of the currently selected ‘CODE’ will begin to flash.

Press the key or key to select a digit from ‘0’ to ‘9’, a letter from ‘A’ to ‘Z’, or a hyphen. Note that here ‘A’ has been selected.

When the desired character has been displayed, press the key. The first character will then have been specified and the second character will begin to flash.

Repeat steps 4 and 5 until the fourth character has been specified. When the fourth character has been specified, press the key.

The sample code just specified will then be displayed and the display will return to the state described in step 2.

If you wish to specify other measuring conditions settings, press the

key to select the setting to be specified.

To exit from specifying measuring conditions settings, press the

key instead.

Step

Display

Page 42

10-2-4 Setting the date and time

This section describes how to set the date and time. Note that while the internal clock is already set at the time of shipment, the following procedure should be used whenever resetting the clock. Also note that the date and time of measurement are output whenever measurement data is output to a printer or computer.

 How to set the date

Key(s) used Operating instructions

With the display displaying the weight in grams, press the key.

Press the key until the ‘DATE’ menu item is displayed.

Press the key. This will cause the highlight to shift to the output DATE format and the currently selected output format to be displayed.

* The output format will be displayed in the order ‘YMD’ (year, month, day, and

time), ‘MDY’ (month, day, year, and time), and ‘DMY’ (day, month, year, and time).

Press the key until the desired output format is displayed. Each time the

key is pressed the display will change from ‘YMD’ to ‘MDY’ to

‘DMY’ and back to ‘YMD’ again.

Note that while we describe the procedure to be followed when specifying dates in ‘YMD’ format, the order in which settings are specified in steps 5 through 7 differ depending on the format selected.

When the desired output format has been displayed, press the key. This will cause the highlight to shift to the specification of the date and the 2digit value for the currently specified year to begin to flash. Press the key or key to select the correct 2-digit year.

Pressing the

key causes the specified year to be set and the highlight

to shift to the specification of the 2-digit value for the current month. Press the

key or key to select the correct 2-digit month.

Pressing the key causes the specified month to be set and the highlight to shift to the specification of the 2-digit value for the current day. Press the

key or key to select the correct 2-digit day.

Pressing the key causes the specified day to be set and the highlight to shift to the specification of the 2-digit value for the hour portion of the current time. Press the

key or key to select the correct 2-digit

hour. Pressing the

key causes the specified hour to be set and the highlight to shift to the specification of the 2-digit value for the minutes portion of the current time. Press the

key or key to select the correct 2-digit

minutes setting. Pressing the

key causes the specified minutes selection to be set and only ‘DATE’ to be displayed. (The clock will start counting from 0 seconds the moment the

key is pressed.)

If you wish to specify other measuring conditions settings, press the key to select the setting to be specified. To exit from specifying measuring conditions settings, press the

key

instead.

Display

Step

Page 43

10-2-5 CAL (Scale calibration)

The scale is designed to allow it to be calibrated. Calibration is performed at two points: 0 and 100 grams. The FD-720 may also be connected to a printer to make it possible to automatically generate calibration records in compliance with GLP, GMP, and ISO standards. (For further information, see “ Printing calibration records when performing calibration” on p. 59.)

* The power to the unit should be turned on at least 30 minutes before calibration is performed in order to

ensure accurate calibration.

* The FD-720 is extremely sensitive to interference from drafts, breezes, vibration, and other disturbances

in the surrounding environment, and care should be taken to ensure that there is no such interference before performing calibration.

* It is impossible to accurately calibrate the scale immediately after performing measurements or at any

other time when the heater lid is hot. Allow the temperature of the heater lid to cool down to ambient temperature before performing calibration.

* The weights used should consist of standard OIML weights or some other type of non-magnetic

weights.

* When placing a weight on the sample dish, it should be placed so that the center of gravity of the weight

is near the center of the dish.

* The heater lid must be closed during calibration to prevent a calibration from being affected by drafts or

breezes, and the height of the weights used should be such that they do not come into contact with the temperature sensor or heater.

* If you wish to abort a calibration already in progress, press the

key. An ‘Abort’ message will be

displayed and the screen will return to a weight display.

 Scale calibration procedure

DisplayKey(s) used Operating instructions

With the display displaying the weight in grams, press the key.

Press the key until the ‘CAL’ menu item is displayed.

Press the key. This will cause the calibration settings to be displayed and the setting ‘100.000’ to begin to flash.

To change the 100-gram weight value used here, press the key. This will cause the displayed value to stop flashing. Next, press the

key or key to enter a value for the weight.

Pressing the

key then causes the specified weight value to

begin flashing. Open the heater lid and place a weight of the specified weight

inside. Closing the heater lid and pressing the

key causes a

string of hyphens (i.e., ‘- - - -’) to be displayed, 100-gram calibration to come to an end, and then a flashing value of ‘0.000’ to be displayed.

Step

Page 44

DisplayKey(s) used Operating instructions

With the value ‘0.000’ flashing, open the heater lid and remove the weight. Closing the heater lid and pressing the

key causes a string of hyphens (i.e., ‘- - - -’) to be displayed, 0-point calibration to come to an end, and then an ‘END’ message to be displayed.

* If the unit is connected to a printer, then a calibration record will

be automatically printed out.

After several seconds, the display will return to the regular weight display.

Step

Page 45

10-2-6 Specifying a device ID

This section describes how to specify the device ID output when outputting data to a printer or computer. The device ID is an 8-character ID which may be set using the following characters: digits from 0~9, letters from A~Z, and hyphens (i.e., ‘—’).

 How to specify a device ID

Key(s) used Operating instructions

From the weight display, press the

key and hold the

key down while pressing the key.

The first through fourth characters of the device ID will be displayed with the first character flashing. The indicator ‘id’ will be displayed in the center of the display.

Press the key or key to select the desired character (i.e., a digit from 0~9, a letter from A~Z, or a hyphen). Note that here the letter ‘A’ has been selected.

When the desired character is displayed, press the key. The first character will then have been specified and the second character will begin to flash.

Repeat steps 3 and 4 until the fourth character has been specified. Note that here a value of ‘ABCD’ has been specified. When the fourth character has been specified, press the key.

The fifth through eighth characters of the device ID will then be displayed with the first of the four characters flashing.

Just as with the first four characters, repeat steps 3 and 4 until the eighth character has been specified. Note that here a value of ‘—123’ has been specified.

When the eighth character has been specified, press the key. This will complete the setting of the device ID, and the display will return to the standard weight display.

Step

Display

Page 46

10-2-7 Specifying a password

In order to prevent the specified measuring conditions from being modified unexpectedly, a password may be specified to prevent other users from changing the specified conditions. The password is 4 characters in length and may be set using the following characters: digits from 0~9, letters from A~Z, and hyphens (i.e., ‘—’). If the password has been set to any password other than the default password of ‘0000’ set at the time of shipment, whenever the key is pressed to specify measuring conditions the indicator ‘PASS’ is displayed in the weight display area and the user is required to enter a password.

 How to specify a password

Key(s) used Operating instructions

From the weight display, press the

key and hold the

key down while pressing the key.

The default password of ‘0000’ will be displayed with the first character of the password flashing. The indicator ‘SEt’ will be displayed in the weight display area.

Press the key or key to select the desired character (i.e., a digit from 0~9, a letter from A~Z, or a hyphen). Note that here the letter ‘1’ has been selected.

When the desired character is displayed, press the key. The first character will then have been specified and the second character will begin to flash.

Repeat steps 3 and 4 until the fourth character has been specified. Note that here a value of ‘1234’ has been specified.

When the fourth character has been specified, press the key. This will complete the setting of the password, and the display will return to the standard weight display.

Step

Display

Page 47

10-2-8 Specifying the power settings

This subsection describes the procedure to be followed in specifying the power settings to be used in accordance with the type of power being used. Note that the voltages which may be specified differ depending on the power setting selected using the power conversion switch. Note that this setting must be specified when using the FD-720 in countries outside of Japan or whenever there is a change in the type of power source being used.

Key(s) used

Turn on power

Step

 How to specify the power settings

Operating instructions

Turn on the power while holding the

key pressed down.

* Note that you should not remove your finger from the key

until a string of hyphens (i.e., ‘- - - - -’) are displayed.

A tone will sound, the display will light up with all items lit and then change to display first ‘CHE5’ and then a string of hyphens (i.e., ‘-

- - - -’). At the bottom left of the display will be displayed the currently specified power settings.

If the power conversion switch has been set to ‘100~120V’, then pressing the

key will cause the display to switch from 100V to 110V to 120V and back to 100V in sequence. If the power conversion switch has been set to ‘220~240V’, then pressing the

key will similarly cause the display to switch from 220V to 230V to 240V and back to 220V in sequence. Note that here a voltage level of ‘120V’ has been specified.

When the desired voltage is displayed, press the

key. The display will then change from ‘CHE4’ to ‘CHE0’ in sequence with the specified voltage still displayed.

A tone will then sound and the display will return to the regular weight display.

Display

・・・・・

Page 48

11. Error Messages

If any of the following error messages are displayed, follow the procedures described below to check for the cause of the error and take appropriate action to remove the error. If the error cannot be removed by following the procedures described below, then you should contact the vendor from which you purchased the unit or the Kett Tokyo sales office or a local Kett office or sales office for assistance.

Action to be taken

Remove the scale stopper located under the sample dish panel. (See item 3 in “6. Assembly and Installation of Main Unit” on p. 14 for instructions.)

The minimum sample weight which can be used with this product is a weight of 0.5 grams. Try measuring again using a sample of at least 0.5 grams in weight. Press the

key to make the

error message disappear. The maximum sample weight which can be used with this

product is a weight of 120 grams. Try measuring again using a sample of less than 120 grams in weight. Press the

key

to make the error message disappear. This error is displayed when a sample is added during

measurement. Press the

key to make the error message

disappear. Press the

key to make the error message disappear.

Press the key to make the error message disappear.

Turn off the power and then turn the power back on again.

Use a calibration weight of the correct weight. Press the

key to make the error message disappear.

Perform calibration again with the unit placed on a flat, stable surface not subject to the effects of external vibration, drafts, or breezes. Press the key to make the error message disappear.

Turn the power to the unit off, check to make sure that the power conversion switch located on the back of the unit is set to the correct position, and then turn the power back on again.

Message

ER102

ER103

ER104

ER201

ER202

ER306

ER401

ER501

ER502

ER701

Description

The scale stopper located below the sample dish panel has not been removed.

The sample is too light (i.e., under 0.5 grams).

The sample is too heavy (i.e., over 120 grams).

Invalid moisture content value (Occurs when weight increases by more than 0.1 grams)

Invalid moisture content value (Occurs when weight being measured is less than –1 grams)

Heater lid open

Internal weight measuring unit communications error

Invalid weight used during scale calibration

Instability encountered during scale calibration

Power error

Page 49

Message

ER301

ER302

ER303

ER304

ER305

ER601

ER602

ER603

ER702

ER801

ER802

Source of problem

Temperature sensor short-circuit

Temperature sensor not connected

Heater overheated This error indicates the existence of an extremely hazardous condition. Turn the power off immediately and without delay contact a Kett representative for assistance.

Temperature measurement error

Heater failure

Auto-taring mechanism error

Power failure

Memory error

Internal clock error

If any of the following errors are displayed, it indicates that a failure or breakdown of internal parts or components has occurred. Contact the vendor from which you purchased the unit or the Kett Tokyo sales office or a local Kett office or sales office for assistance.

Page 50

12. Predictive Measurements

12-1 A Description of Predictive Measuring

Infrared moisture content testers can be used to measure the moisture content of a wide range of different materials, thus making it possible to measure the moisture content of almost anything. This is the most important feature found in infrared testers not found in other types of testers. At the same time, however, because an infrared moisture content tester operates by heating samples to evaporate the moisture content, it takes a fair amount of time to obtain measurements. In order to make it possible to shorten the amount of time required for taking measurements and to provide a means of approximating the moisture content measurements which would be obtained using standard methods, predictive measuring mode has been developed. In predictive measuring mode,

1 An estimate is calculated of the final moisture content while drying is still in progress. 2 It is necessary to specify three settings before measuring: the drying temperature, the pre-

dicted value convergence range, and the bias. 3 This mode is designed for use only with materials which display a drying curve of the type generally referred to as an ‘S cur ve’.*

*1When compared to other curves showing the degree of drying which takes place when the mois-

ture content of a given material changes as drying progresses, an ‘S-curve’ is a curve in which the degree of change in moisture content (i.e., ∆M) in the initial stages of drying is low and then increases towards the middle of the drying process and then decreases progressively as the drying process nears completion.

 Drying temperature

Since the desired value is that which would be obtained when operating in automatic halting mode, the drying temperature specified should be the same as that which would be specified in automatic halting mode.

 Predicted value convergence range

When operating in predictive operating mode, predicted values are internally calculated every 30 seconds, and while variation occurs in the calculated values, the degree of variation grows smaller as more and more time elapses. The FD-720 has been designed to treat the final predicted value as having been obtained when the range of variation falls within the predicted value convergence range. The range of allowable variation in predicted final moisture content is referred to as the predicted value convergence range. The predicted value convergence range may be specified as a percentage anywhere from 0.1 to

9.9 percent. While specifying a higher value for the predicted value convergence range causes the final predicted value to be calculated more quickly, the specification of a higher value may also result in greater degrees of error occurring in predicted values. Conversely, while it is possible to obtain more stable sets of predicted values when a lower value is specified for the predicted value convergence range, specifying lower values tends to make it take significantly longer to calculate a final predicted value. The value specified for the predicted value convergence range should accordingly be specified according to your objectives. Note that the default setting for the FD-720 is a value of 0.5 percent.

Page 51

 Bias

Bias is used to change the average lower limit of fixed values with respect to predicted measurement values. On the FD-720, a bias of anywhere from –9.99 to +9.99 percent may be specified. When performing a comparative measurement, the FD-720 automatically requests a bias to be used to correct measurements to match those obtained in automatic halting mode.

 Comparative measuring mode

In comparative measuring mode, predicted measurements are displayed while measuring is in progress and measuring is halted under the same conditions as when operating in automatic halting mode. The difference between the measured value and predicted value is displayed as the bias. In order to obtain more accurate predicted measurements, it is recommended that when calculating the bias you should perform at least 5 comparative measurements and take the average of all measurements obtained to use as the bias. You should also take care in terms of the amount of material and the way the sample material is placed onto the sample dish to ensure that the sample material is laid out as evenly as possible and sample amounts are similar. Note that no predicted measurement or bias can be calculated if a predicted measurement is not obtained before the measurement is completed.

 Predictive measuring mode

It is possible to obtain actual predicted measurements by specifying the same drying temperature, predicted value convergence range, and bias as calculated when performing comparative measurements in comparative measuring mode. Note that measuring is halted if no predicted measurement has been calculated after 30 minutes have elapsed since the time when the measurement was begun.

Page 52

12-2 Procedure for Obtaining Predicted Measurements

1) Use the comparative measuring mode to calculate the bias to be specified to obtain the predicted measurement. (See

“12-2-1 Calculating the bias to be specified when operating in predictive

measurement mode”

on p. 52 for instructions on how to do so.)

2) Use the bias calculated in comparative measuring mode in step 1) to specify the bias, perform the measurement, and evaluate the predicted measurement. (See “12-2-2 Evaluating predicted measurements” on p. 54 for instructions on how to do so.)

3) Measure in predictive measuring mode. (See “12-2-3 Obtaining predicted measurements” on p. 55 for instructions on how to do so.)

12-2-1 Calculating the bias to be specified when operating in predictive measurement mode

Operating instructions

Set the mode to comparative measuring mode. (See 9-2-2 “6) Specifying settings for COMPARE (Comparative measuring) mode” on p. 32 for instructions on how to do so.)

Specify the desired predicted value convergence range. In the example shown here, a range of 0.5% is specified.

* Note that the predicted value convergence range specified affects the amount

of time required for measurement and the accuracy of predicted measurements, and that you should specify a range according to your objectives. (For further information, see “ Predicted value convergence range” on p. 50.)

Specify the automatic halting conditions to be used (e.g., 0.05%).

Specify the drying temperature to be used. (For further information, see “9-2-3 TEMP (Drying temperature)” on p. 35.) In the example shown here, a temperature of 120°C is specified.

Set the bias to 0.00%. (See “9-2-4 Bias” on p. 35 for further information.)

Place the sample onto the sample dish and begin measurement. (In the example shown here, the initial weight is 10.478 grams.)

When the final predicted value has been calculated, it will be displayed. (In the example shown here, the measuring time was 7 minutes and the predicted measurement is 15.8 percent.)

Step

. . . . .. . . . .

Display

Page 53

DisplayOperating instructions

Completion of measurement Measuring will be completed when the conditions specified for automatic halting mode have been met. When measuring is completed, the bias will be displayed in the bias display area.

* If no predicted measurement is displayed even after 30 minutes has elapsed

from the time when measuring was initiated, it is probable that it is impossible to obtain a predicted measurement.

[Measurement results] Predicted measurement

Automatic halting mode measurement Bias + 0.60

= 16.40 (Automatic halting mode value) – 15.80 (Predicted measurement)

Without changing any of the conditions used in steps 1 through 5, repeat steps 6 through 8 to measure again 5 times or more and calculate the average bias. The average bias may then be used to specify the bias to be used in predictive measuring mode.

* If the bias varies greatly from one time to the next when performing repeated

measurements, then it is probably safe to assume that a predicted measurement cannot be obtained. If this happens you should measure in automatic halting mode or in some other mode instead of predictive.

If you wish to use the calculated bias to evaluate predicted measurements, follow the procedure described in “12-2-2 Evaluating predicted measurements” on p. 54; if you wish to use the calculated bias to actually obtain predicted measurements, follow the procedure described in “12-2-3 Obtaining predicted measurements” on p. 55.

Step

Page 54

12-2-2 Evaluating predicted measurements

Operating instructions

With the mode set to comparative measuring mode, specify the bias calculated following the procedure described in 12-2-1 In the example shown here, a bias of 0.60 percent has been specified. (For information on the bias, see “9-2-4 Bias” on p. 35.)

* Do not change any other settings (i.e., the predicted value convergence range

and drying temperature) at this time.

Place the sample onto the sample dish and begin measurement. (In the example shown here, the initial weight is 10.478 grams.)

When the final predicted measurement has been obtained, a predicted measurement adjusted by the specified bias (here a bias of 0.60%) will be displayed. (In the example shown here, the measuring time was 7 minutes and the predicted measurement is 16.10 percent.)

Completion of measurement Measuring will be completed when the conditions specified for automatic halting mode have been met.

Measurement results

Predicted measurement corrected by the specified level of bias (0.60%)

= 15.50 (Predicted measurement when a bias of 0% is specified) + 0.60 (specified level of bias)

Automatic halting mode measurement

Bias + 0.90

= 16.40 (Automatic halting mode value) – 15.50 (Predicted measurement when bias is ‘0‘.)

* Note that the specified bias (0.60%) does not affect the bias displayed here.

Without changing any of the specified in step 1, repeat steps 2 through 4 to measure again 5 times or more and obtain a comparison of the values obtained when operation in automatic halting mode and predictive measurement mode. If the difference between the two sets of values is within an allowable range, then the specified bias may be judged to have been an appropriate one. If the difference between the two sets of values exceeds allowable levels, then the average bias from the comparison just performed should be calculated, the average then specified as the new bias setting, and the evaluation process performed again.

* If the difference between the two sets of values exceeds allowable levels and

the bias varies sharply over repeated measurements, then it is probably safe to assume that a predicted measurement cannot be obtained. If this happens you should measure in automatic halting mode or in some other mode.

Step

. . . . .. . . .

Display

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12-2-3 Obtaining predicted measurements

Operating instructions

Set the mode to predictive measuring mode. (9-2-2 “7) Specifying settings for PREDICT (Predictive measuring) mode” on p. 33 for instructions.)

Specify the same settings for the predicted value convergence range and drying temperature as those used in comparative measuring mode (subsections 12-2-1 and 12-2-2).

Example: Predicted value convergence range: 0.5% Drying temperature: 120°C

Use the bias calculated following the procedures described in 12-2-1 and 12-22 to specify the bias (shown here as 0.60%). (Also see “9-2-4 Bias” on p. 35.)

Place the sample onto the sample dish and begin measurement. (In the example shown here, the initial weight is 10.213 grams.)

Completion of measurement The predicted measurement will then be displayed.

Step

. . . . .

Display

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13. Printing Output to a Printer (Option)

The FD-720 may be connected to a printer to make it possible to output measurement data or other information to the printer. Output which may be generated includes data consisting of intermediate or final measurements, sample codes, and measurement times.

*A dot-matrix printer may also be used, although it is impossible to obtain graphical output when using a

dot-matrix printer. Please inquire with Kett if you require further information.

13-1Sample Printer Output

 Output consisting solely of final values from multiple measurements

[Tabular output (TBL)]

[Graph output (GRP)]

Supplier :

KETT ELECTRIC LABORATORY Model : FD-720 Serial number : AC00001 Device ID : ABCD-123 Time of measurement : 2003/08/08 Measuring conditions storage area : 0 Measurement standard : Wet base Measurement mode : Automatic halting mode Drying temperature : 110°C Automatic halting conditions : 0.05% Bias : 0.00%

Sample code Time of measurement Pre-drying weight (g)

Post-drying weight (g)

Measured value (%)

Signature

* Pressing the

key after the completion of measurement cause the signature field to be printed.

Supplier :

KETT ELECTRIC LABORATORY Model : FD-720 Serial number : AC00001 Device ID : ABCD-123 Time of measurement : 2003/08/08 Measuring conditions storage area : 0 Measurement standard : Dry base Measurement mode : Timed halting mode Drying temperature : 110°C Measurement time : 10 mins. Bias : 0.00%

Sample code Time of measurement Measurement graph

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 Output showing the intermediate values obtained during a single measurement

[Tabular output (TBL)]

* Note on the decimal precision of printed weight data

Although the minimum weight which may be displayed by the FD-720 is 0.001 grams, weights (Mass) are printed to a precision of 4 decimal points because the values printed consist of averages from 7 measurements taken over each 30-second interval for each set of weight data output.

Supplier :

KETT ELECTRIC LABORATORY Model : FD-720 Serial number : AC00001 Device ID : ABCD-123 Sample code : C-01 Date & time of measurement : 2003/08/08, 15:24 Measuring conditions storage area : 0 Measurement standard : Dry base Measurement mode :

Automatic measuring mode

Drying temperature : 110°C Automatic halting conditions : 0.05% Bias : 0.00%

Elapsed measuring time Changes in drying temperature Changes in weight Measured value (%)

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[Graph output (GRP)]

Supplier :

KETT ELECTRIC LABORATORY Model : FD-720 Serial number : AC00001 Device ID : ABCD-123 Sample code : B-20 Date & time of measurement : 2003/08/08, 15:07 Measuring conditions storage area : 0 Measurement standard : Dry base Measurement mode :

Comparative measuring mode

Drying temperature : 110°C Automatic halting conditions : 0.05% Predicted value convergence range : 0.5 Bias : 0.00%

Pre-drying weight : 5.6892g

Elapsed measuring time Changes in drying temperature Measured value (%)

Predicted measurement

Post-drying weight :4.8637g

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13-2 Outputting Past Measurement Data

Record are stored of up to 100 past measurements in sequence from the most recent to the oldest. This data can be output to a printer or computer.

1 Follow the directions given on p. 38 “10-2-2 Specifying the type and format of output” to set the

output format to either ‘TBL’ or ‘PC‘.

2 From the weight display, press the key and hold the key down while pressing the

key.

3 The data will then be output (in order) beginning from the most recently measured data. To stop

printing while printing is still in progress, press the key.

 Printing calibration records when performing a calibration

Supplier : KETT ELECTRIC LABORATORY Model : FD-720 Serial number : AC00001 Device ID : ABCD-123 Time of measurement : 2003/08/08 15:18

Signature

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14. Computer Interface

The RS-232C interface may be used to connect the FD-720 to a computer with an RS-232C interface and output measurement data to that computer.

14-1 RS-232C Interface Specifications

Interface type : RS-232C Communications method : Asynchronous communication Baud rate : 2400 bps Data bits : 8 bits Parity : None Stop bits : 1 bit Connector : Female D-SUB9 pins Pin layout :

54321

9876

Pin number Direction Description

1 Not used 2 Output TXD 3 Input RXD 4 Not used 5 GND 6 Not used 7 Not used 8 Not used 9 Not used

Frame Shield

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14-2 Setting Up and Transmitting Data

14-2-1 Connecting the RS-232C cable

With the power to the FD-720 and the computer both turned off, connect the RS-232C cable. Insert the connector at the end of the RS-232C cable into the RS-232C port located at the rear of the FD-720 and then tighten the screws located at both sides of the cable connector. Follow the same procedure to insert the RS-232C cable into the RS-232C port of the computer. If the FD-720 has been moved, check to make sure that the FD-720 is level and, if not readjust until it is level. (See “6. Assembly and Installation of Main Unit” on p. 14 for instructions.)

14-2-2 FD-720 settings

Turn on the power to the FD-720 and set the measurement data output destination to ‘PC’. (See “10-2-2 Specifying the type and format of output” on p. 38 for instructions.)

14-2-3 Starting up the computer

Turn on the power to the computer and, when Windows has started, start the Data Logger software KDL-01 or whatever software is to be used to read in data from the RS-232C interface.

* For instructions on how to use your computer, operating system (Microsoft Windows), or software

being used, see the user manuals provided with your computer, operating system, or software.

* The Microsoft Windows name and logo are the trademarks and registered trademarks of the Microsoft

Corporation in the United States and other countries.

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14-3 Computer Output Format

Interface type : RS232C Numeric output format : JIS (ASCII) Delimiter code : 0x09 (tab) Delimiter : 0x0D (CR) + 0x0A(LF)

 Title output format at time of start of measurement (Underscore characters (i.e., ‘_’) are used below to indicate blanks (i.e., ‘20’ in hexadecimal)

1 “KETT_ELECTRIC_LABORATORY” + delimiter 2 “_Model_:_FD720” + delimiter 3 “_SN_:_” + “XXXXXXX” (7-byte Serial No.) + delimiter 4 “_ID_:_” + “XXXXXXXX” (8-byte ID) + delimiter 5 “_Date/Time_:_” + “XX” (2-byte year) + “.” + “XX” (2-byte month) + “.” + “XX” (2-byte day) + “/”

+ “XX” (2-byte hour) + “:” + “XX” (2-byte minutes) + delimiter 6 “_Condition_:_” + “X” (1-byte condition number) + delimiter 7 “_Unit_:_” + “Wet Base Moist.” or “Dry Base Moist.” or “Solid Content” + delimiter

8-1Automatic halting format

“_Mode_:_Auto” + delimiter

“_Setting Temp._:_” + “XXX” (3-byte temperature setting) + “C” + delimiter

“_Auto Stop Cond._:_” + “X.XX” (4-byte automatic halting conditions setting) + “%” +

delimiter

8-2Timed halting format

“_Mode_:_Time” + delimiter

“_Setting_Temp._:_” + “XXX” (3-byte temperature setting) + “C” + delimiter

“_Drying_Time_:_” + “XXX” (3-byte drying time setting) + “min.” + delimiter

8-3High-speed drying format

“_Mode_:_Rapid” + delimiter

“_Setting_Temp._:_” + “XXX” (3-byte temperature setting) + “C” + delimiter

Automatic halting: “_Auto Stop Cond._:_” + “X.XX” (4-byte automatic halting conditions

setting) + “%” + delimiter

Timed halting: “_Drying Time_:_” + “XXX” (3-byte drying time setting) + “min.” + delimiter

“_Max_Temp._:_” + “XXX” (3-byte of high-speed drying temperature) + “C” +delimiter

“_Delta M_:_” + “X.X” (3-byte of degree of high-speed drying maintenace condition) +

delimiter

8-4Low-speed drying format

“_Mode_:_Slow” + delimiter

“_Setting Temp._:_” + “XXX” (3-byte temperature setting) + “C” + delimiter

Automatic halting: “_Auto Stop Cond._:_” + “X.XX” (4-byte automatic halting conditions

setting) + “%” + delimiter

Timed halting: “_Drying Time_:_” + “XXX” (3-byte drying time setting) + “min.” + delimiter

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8-5Stepped mode format

“_Mode_:_Step” + delimiter

tab + “Temp (C)” + tab + “Time (min.)” + delimiter

The following output then appears the same number of times as the number of specified

steps:

“_Step” + “X” (1-byte step number) + tab + “XXX” (3-byte temperature setting) + tab +

“XXX” (3-byte drying time setting) + delimiter

8-6Comparative mode format

“_Mode_:_Compare” + delimiter

“_Setting Temp._:_” + “XXX” (3-byte temperature setting) + “C” + delimiter

“_Auto Stop Cond._:_” + “X.XX” (4-byte automatic halting conditions setting) + “%” +

delimiter

“_Pred. Tol._:_” + “X.X” (Predicted value convergence range) + delimiter

8-7Predictive mode format

“_Mode_:_Predict” + delimiter

”_Setting Temp._:_” + “XXX” (3-byte temperature setting) + “C” + delimiter

“_Pred. Tol._:_” + “X.X” (Predicted value convergence range) + delimiter

9 “_Bias_:_” (+“-”) + “X.XX” + “%” + delimiter

 Measurement output format

tab + “Time (min.)” + tab + “Temp. (C)” + tab + “Mass (g)” + tab + “Moist (%)” + delimiter

 Intermediate measurement output format

tab + “XXX.X” (5-byte measuring time) + tab + “XXX” (3-byte of thermistor temperature) + tab + “XXX.XXXX” (8-byte sample weight) + tab + Moisture content “XXX.XX” (6-byte moisture content) + delimiter

 Final measurement output format

“*” + tab + “XXX.X” (5-byte measuring time) + tab + “XXX” (3-byte of thermistor temperature) + tab + “XXX.XXXX” (8-byte sample weight) + tab + Moisture content “XXX.XX” (6-byte moisture content) + delimiter

 Sample output

Maker Model Serial number Device ID Sample code Date & time of measurement Measuring conditions storage area Measurement standard Measurement mode Drying temperature Automatic halting conditions Bias

Elapsed measuring time Changes in drying temperature Changes in weight Measured value (%)

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15. Maintenance

15-1 Performing Maintenance

Always be sure to remove the plug from its socket before performing maintenance.

1 Removing parts and components

Remove the sample dish first, followed by the sample dish handler, sample dish tray, and wind shield in order.

2 Installing parts and components

See “6. Assembly and Installation of Main Unit” on p. 14 for instructions on how to install parts and components.

3 Remove any traces of spillage or soiling from samples.

4 Maintenance of the main unit

 Use a soft, dry cloth to wipe away any dirt or soil.  Avoid applying strong pressure when wiping, even if you find dirt or soiling difficult to remove.  If you find it particularly difficult to remove dirt or soiling, wet a cloth in water, or in water with a

small amount of neutral detergent, wring the cloth thoroughly, and wipe. Next, rinse the cloth in water and wring it out to remove any detergent, and wipe again, then allow to dry.

5 Maintenance of parts and accessories

 Remove the spoon, spatula, sample dish, and wind shield from the main unit, and wash in

water with a soft sponge.

 Reattach to the main unit and wait until completely dry before using the unit again.

* When using detergents, be sure to follow the instructions provided with the detergent in

question.

* Never use paint thinner, benzene, or any volatile cleaning agents, or any abrasive cleansers or

polishes.

* Never use wire brushes or other hard cleaning tools.

Warning

Caution

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15-2 Replacing Fuses

1 Remove the power cord from the unit. 2 The fuse holder is located at the rear of the unit.

Insert a slot screwdriver or similar tool from the top of the fuse holder, and pull the fuse holder towards your body.

3 Remove the fuses from the fuse holder and check

to see if any are burned out.

4 If there are no burned-out fuses, return the fuse

holder to its original position. If there is a burnedout fuse, replace it with one of the spare fuses or with a compatible (T8A 250V) fuse.

5 Return the fuse holder to its original position in the

main unit.

6 Insert the power cord back into the main unit.

* If a fuse blows out again after being replaced,

then there may be a problem with your unit, and you should have it checked and/or repaired.

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