Rice Lake FX-i WP User Manual

FZ-120iWP / FZ-200iWP / FZ-300iWP

FZ-1200iWP / FZ-2000iWP / FZ-3000iWP

FX-120iWP / FX-200iWP / FX-300iWP

FX-1200iWP / FX-2000iWP / FX-3000iWP

1WMPD4001591A

This is a caution mark.

or translated into any language in any form by any means without the written permission of A&D Company Ltd.

The contents of this manual and the specifications of the instrument

covered by this manual are subject to change for improvement without notice.

Windows, Word and Excel are the registered trademarks of the

Microsoft Corporation.

CONTENTS

Basic Operation

1. INTRODUCTION ...................................................................................................................................... 3

1-1 About This Manual .............................................................................................................................. 3

1-2 Features.............................................................................................................................................. 3

1-3 Compliance......................................................................................................................................... 4

2. UNPACKING THE BALANCE ................................................................................................................. 7

2-1 Unpacking........................................................................................................................................... 7

2-2 Installing the Balance.......................................................................................................................... 8

3. PRECAUTIONS........................................................................................................................................ 9

3-1 Before Use.......................................................................................................................................... 9

3-2 During Use........................................................................................................................................ 10

3-3 After Use ............................................................................................................................................11

3-4 Power Supply.....................................................................................................................................11

3-5 Display Symbols and Key Operation ................................................................................................ 12

4. WEIGHING UNITS ................................................................................................................................. 13

4-1 Units.................................................................................................................................................. 13

4-2 Storing Units ..................................................................................................................................... 15

5. WEIGHING ............................................................................................................................................. 16

5-1 Basic Operation (Gram Mode).......................................................................................................... 16

5-2 Counting Mode (PCS) ...................................................................................................................... 17

5-3 Percent Mode (%)............................................................................................................................. 19

5-4 Statistical Calculation Mode.............................................................................................................. 20

5-5 Statistical Calculation Mode (Example of Use)...................................................................................... 25

Adapting to the Environment

6. RESPONSE ADJUSTMENT .................................................................................................................. 27

7. CALIBRATION ....................................................................................................................................... 28

7-1 Calibration Mode............................................................................................................................... 28

7-2 Calibration Using the Internal mass

7-3 Calibration Using an External Weight............................................................................................... 30

7-4 Calibration Test Using an External Weight ....................................................................................... 32

(One-Touch Calibration, only for FZ-iWP series)

.......................................... 29

Functions

8. FUNCTION SWITCH AND INITIALIZATION ......................................................................................... 34

8-1 Permit or Inhibit................................................................................................................................. 34

8-2 Initializing the Balance...................................................................................................................... 35

9. FUNCTION TABLE ................................................................................................................................ 36

9-1 Structure and Sequence of the Function Table ................................................................................36

9-2 Display and Keys.............................................................................................................................. 36

9-3 Details of the Function Table ............................................................................................................ 37

9-4 Description of the Class “Environment, Display” .............................................................................. 40

9-5 Description of the Item “Data Output Mode”..................................................................................... 42

9-6 Description of the Item “Data Format” .............................................................................................. 43

9-7 Data Format Examples..................................................................................................................... 45

9-8 Description of the Item “Application Function”.................................................................................. 46

9-9 Comparator Function........................................................................................................................ 47

9-10 Clock and Calendar Function ......................................................................................................... 48

10. ID NUMBER AND GLP REPORT ........................................................................................................ 50

10-1 Setting the ID Number .................................................................................................................... 50

10-2 GLP Report..................................................................................................................................... 50

11. UNDERHOOK ...................................................................................................................................... 53

12. PROGRAMMABLE-UNIT .................................................................................................................... 54

RS-232C Serial Interface

13. RS-232C SERIAL INTERFACE ........................................................................................................... 55

14. CONNECTION TO PERIPHERAL EQUIPMENT................................................................................. 56

14-1 Connection to the AD-8121B Printer .............................................................................................. 56

14-2 Connection to a Computer.............................................................................................................. 57

14-3 Using Windows Communication Tools (WinCT) ............................................................................. 58

15. COMMANDS ........................................................................................................................................ 59

15-1 Command List................................................................................................................................. 59

15-2 Acknowledge Code and Error Codes ............................................................................................. 60

15-3 Settings Related to the RS-232C ................................................................................................... 61

Maintenance

16. MAINTENANCE ................................................................................................................................... 62

17. TROUBLESHOOTING ......................................................................................................................... 63

17-1 Checking the Balance Performance and Environment................................................................... 63

17-2 Error Codes .................................................................................................................................... 64

17-3 Asking For Repair ........................................................................................................................... 65

18. OPTIONS.............................................................................................................................................. 66

19. SPECIFICATIONS................................................................................................................................ 69

20. EXTERNAL DIMENSIONS................................................................................................................... 71

21. TERMS / INDEX ................................................................................................................................... 73

1. INTRODUCTION

This manual describes how the FZ-i WP series and the FX-i WP series balance works and how to get the most out of it in terms of performance. Read this manual thoroughly before using the balance and keep it at hand for future reference.

1-1 About This Manual

This manual consists of the following five parts:

Basic operation ...................... Describes precautions on handling the balance, balance construction

and basic balance operation.

Adapting to the environment .. Describes response adjustment and calibration.

Functions................................ Describes various functions of the balance.

RS-232C serial interface ........ Describes the interface which transmits data and controls the

balance.

Maintenance........................... Describes maintenance, error codes, troubleshooting, specifications

and options.

1-2 Features

Dust-tight and protected against water jets (complying with IP65), suitable to weigh powdery or liquid

material. A waterproof RS-232C cable (AX-KO2737-500) is available as an option.

Compact general-purpose balance, can be installed almost anywhere.

Casing construction, strong protection against dust and water.

Stabilization time of one second. When FAST is selected for the response rate, a stabilization time of

one second, to read a displayed value after a sample is placed on the pan, has been achieved.

Multiple weighing units with most of the common units used around the world.

Standard RS-232C serial interface to communicate with a computer and to output the Good

Laboratory Practice (GLP) data

Statistical calculation mode to statistically calculate the weight data, and display or output the sum,

maximum, minimum, range (maximum-minimum), average, standard deviation and coefficient of variation.

Comparator Indicators, displaying the comparison results.

Hold Function, provided for weighing a moving object such as an animal.

Breeze break, provided for the FZ-i WP series and the FX-120i WP / FX-200i WP / FX-300i WP, for

more accurate weighing.

Underhook, provided for suspended weighing.

As options, the USB interface (FXi -02), the Ethernet interface (FXi -08) and the built-in battery unit

(FXi -09) are available. When any one of these is used, the balance does not comply with IP65.

1-3 Compliance

Compliance with FCC Rules

Please note that this device generates, uses and can radiate radio frequency energy. This device has been tested and has been found to comply with the limits of a Class A computing device pursuant to Subpart J of Part 15 of FCC rules. These rules are designed to provide reasonable protection against interference when this device is operated in a commercial environment. If this unit is operated in a residential area, it may cause some interference and under these circumstances the user would be required to take, at his own expense, whatever measures are necessary to eliminate the interference. (FCC = Federal Communications Commission in the U.S.A.)

Compliance with EMC Directives

This device features radio interference suppression and safety regulation in compliance with

the following Council Directives Council directive 89/336/EEC EN61326 EMC directive Council directive 73/23/EEC EN60950 Safety of Information Technology Equipment

The CE mark is an official mandatory European marking.

Please note that any electronic product must comply with local laws and regulations when sold or used anywhere outside Europe.

2. UNPACKING THE BALANCE

2-1 Unpacking

The balance is a precision instrument. Unpack the balance carefully. Keep the packing material to be used

for transporting the balance in the future.

The packing contents depend on the balance model. See the illustrations to confirm that everything is

contained.

The breeze break

ssemble the breeze break as shown below.

Follow the numbered sequence.

The breeze break is an accessory for FZ-i WP series, FX-120i WP, FX-200i WP, FX-300i WP .

Display

Bubble spirit level

Keys

Weighing pan

Pan support

Pan boss

Waterproof diaphragm When attaching the pan

support, use much care not to deform the diaphragm.

Main unit

Leveling foot

Main unit cover

RS-232C serial interface

C adapter jack

C adapter plug

Main unit rear

C adapter

Note

Please confirm that the AC adapter type is correct for your local voltage and receptacle type.

C adapter ID label

The AC adapter plug is protected against dust and may be difficult to

insert. When inserting the plug, turn the plug while pushing on it.

To use as a dust and waterproof balance, cover the RS-232C

interface connector, or connect the waterproof RS-232C cable

Terminal cover

Grounding terminal

2-2 Installing the Balance

Install the balance as follows:

1. Place the balance on a solid weighing table. Refer to “3. PRECAUTIONS” for installing the balance.

2. In case of FZ-i WP series and FX-120i WP / FX-200i WP / FX-300i WP Assemble the pan support, weighing pan and breeze break, on the balance as shown in the illustration on page 7.

In case of FX-1200i WP / FX-2000i WP / FX-3000i WP

Assemble the pan support and weighing pan on the balance as shown in the illustration on page 7.

3. Adjust the leveling feet to level the balance. Confirm it using the bubble spirit level.

4. Confirm that the AC adapter type is correct for the local voltage and power receptacle type.

5. Connect the AC adapter to the balance. Warm up the balance for at least 30 minutes with nothing

on the weighing pan.

Note The AC adapter plug is protected against dust and may be difficult to insert. When inserting the plug, turn the plug while pushing on it.

3. PRECAUTIONS

To get the optimum performance from the balance and acquire accurate weight data, note the following:

3-1 Before Use

The meaning of IP65 is "No ingress of dust. Projected against water jets".

If a powerful water jet is used or the balance is immersed in water, the ingress of water may cause damage to the balance.

Confirm that "the plug is inserted firmly into the AC adapter jack" and "the

RS-232C interface connector is covered using the terminal cover or the waterproof RS-232C cable (AX-KO2737-500) is connected", when using as a dust and waterproof balance.

When the balance is used without the terminal cover on the RS-232C

interface connector or a standard RS-232C cable is used, the balance does not comply with IP65.

Install the balance in an environment where the temperature and humidity

are not excessive. The best operating temperature is about 20°C / 68°F at about 50% relative humidity.

Install the balance where it is not exposed to direct sunlight and it is not

affected by heaters or air conditioners.

Install the balance where it is free of dust.

Install the balance away from equipment which produces magnetic fields.

Install the balance in a stable place avoiding vibration and shock. Corners

of rooms on the first floor are best, as they are less prone to vibration.

The weighing table should be solid and free from vibration, drafts and as

level as possible.

Level the balance by adjusting the leveling feet and confirm it using the

bubble spirit level.

Ensure a stable power source when using the AC adapter.

Plug in the AC adapter and warm up the balance for at least 30 minutes.

Calibrate the balance before use or after having moved it to another

location.

Caution

Do not install the balance where flammable or corrosive gas is present.

Good No good

Leveling foot

Bubble spirit level

3-2 During Use

The FZ-i WP series and the FX-i WP series balance has a casing with

high sealing performance due to its dust-tight and waterproof design. Therefore, a very subtle change in the atmospheric pressure in the installation site, for example, generated by opening or closing the door, affects the weighing and may yield an unstable weight value. Wait for the atmospheric pressure to stabilize before weighing.

If the residue of a powdery or liquid material is left on the waterproof

diaphragm or the pan boss, it may cause weighing errors. Clean them before weighing.

If the waterproof diaphragm is deformed due to overloading, it may

cause weighing errors. Remove the load and wait for the waterproof diaphragm to restore to the original shape before continuing with weighing.

Discharge static electricity from the material to be weighed

(hereinafter referred to as the sample). When a sample could have a static charge, the weight data is influenced. Ground the balance and try the following:

Eliminate static electricity using the optional AD-1683 DC static

eliminator. Try to keep the ambient humidity above 45%RH. Use a metal shield case for a charged sample. Wipe charged plastic samples with a moistened cloth.

This balance uses a strong magnet as part of the balance assembly,

so please use caution when weighing magnetic materials such as iron. If there is a problem, use the underhook on the bottom of the balance to suspend the material away from the influence of the magnet.

Eliminate the temperature difference between a sample and the

environment. When a sample is warmer (cooler) than the ambient temperature, the sample will be lighter (heavier) than the true weight. This error is due to a rising (falling) draft around the sample.

Make each weighing gently and quickly to avoid errors caused by the

evaporation of moisture from the sample or the absorption of moisture by the sample.

Do not drop things upon the weighing pan, or place a sample on the

pan that is beyond the balance weighing capacity. Place a sample in the center of the weighing pan.

Do not use a sharp instrument such as a pencil to press the keys. Use

your finger only.

Press the RE-ZERO key before each weighing to eliminate possible

errors.

Calibrate the balance periodically so as to eliminate possible errors.

Take into consideration the affect of air buoyancy on a sample when more accuracy is required.

Prevent foreign materials, such as powder, liquid and metal, from invading the area around the

weighing pan.

The breeze break (FZ-i WP series and FX-120i WP / FX-200i WP / FX-300i WP ) is provided as an

accessory. An anti-static treatment has been applied to the breeze break components, but they may be charged with static electricity when they are unpacked or when the humidity is low. If the weight value is unstable even when there are no drafts or the balance has a problem with repeatability, remove the breeze break. Or wipe the clear plates with a moistened cloth, use the optional AD-1683 DC static eliminator or apply an anti-static spray.

3-3 After Use

Do not allow the balance to be immersed in water. Even though the balance complies with IP code,

the balance will not withstand being completely immersed in water.

Avoid mechanical shock to the balance.

Do not disassemble the balance. Contact the local A&D dealer if the balance needs service or repair.

Do not use organic solvents to clean the balance. Clean the balance with a lint free cloth that is

moistened with warm water and a mild detergent.

The edge of the weighing pan is sharp. Use much care when cleaning the pan.

3-4 Power Supply

When the AC adapter is connected, the balance is in the standby mode if the standby indicator is on

(refer to “3-5 Display Symbols and Key Operation”). This is a normal state and does not harm the balance. For accurate weighing, warm up the balance for at least 30 minutes before use.

3-5 Display Symbols and Key Operation

Key operation

Key operation affects how the balance functions. The basic key operations are:

“Press and release the key immediately” or “Press the key”

= normal key operation during measurement.

“Press and hold the key”.

Display symbols

Number of statistical data (Statistical calculation mode) Displays the weight data relative to the weighing capacity,

in percentage, in the weighing mode (Capacity indicator)

Processing indicato

Stabilization indicato

Processing indicator

NET indicato

Standby indicato

Blinking

Response indicators

nimal mode indicato

Comparator indicators

Units

Interval output mode Standby indicator

Weight data

Interal output mode

ctive indicator

Each key, when pressed or when pressed and held, functions as follows:

Key When pressed When pressed and held

Turns the display on or off. The standby indicator is displayed when the display is turned off. The weighing mode is enabled when the display is turned on. This key is available anytime. Pressing the key during operation will interrupt the operation and turn the display off.

In the weighing mode, turns the minimum weighing value on or off. In the counting or percent mode, enters the sample storing mode.

Switches the weighing units stored in the function table. Refer to “4. WEIGHING UNITS”.

Cancels the operation when performing settings. Enters the calibration mode.

Outputs the weight data to a printer or personal computer using the RS-232C serial interface, depending on the function table settings. Confirms the operation when performing settings.

Enters the function table mode. Refer to “9. FUNCTION TABLE”.

Enters the response adjustment mode.

No function at the factory setting By changing the function table: Outputs “Title block” and “End block” for GLP report.

Sets the display to zero.

4. WEIGHING UNITS

4-1 Units

With the FZ-i WP series and the FX-i WP series balance, the following weighing units and weighing modes are available:

A unit or mode can be selected and stored in the function table as described on page 15. If a weighing mode (or unit of weight) has been turned off, that mode or unit will be missing in the sequence. Tael has four varieties, one of which can be selected and installed at the factory.

To select a unit or mode for weighing, press the MODE key.For details about the units and modes, see the table below:

Name (unit, mode) Display

Gram g g 1 g Counting mode pcs pcs

Percent mode % % Ounce (Avoir) oz oz 28.349523125 g Pound lb lb 453.59237 g

Pound/Ounce

Troy Ounce ozt ozt 31.1034768 g Metric Carat ct ct 0.2 g Momme 3.75 g Pennyweight dwt dwt 1.55517384 g Grain (UK) GN GN 0.06479891 g

Tael (HK general, Singapore) 37.7994 g

Tael (HK jewelry) 37.429 g

Tael (Taiwan) 37.5 g

Tael (China) Tola (India) tol tol 11.6638038 g

Messghal Programmable-unit (Multi-unit) MLT MLT

Loz LO

tl tl

Function table

(Storing mode)

Conversion factor

1 g =

1 Lb = 16 oz, 1 oz = 28.349523125 g

31.25 g

4.6875 g

The tables below indicate the weighing capacity and the minimum display for each unit, depending on the balance model.

Unit

FX-120

Gram 122.000 220.000 320.000 0.001

Ounce (Avoir) 4.30340 7.76025 11.28765 0.00005

Pound 0.268965 0.485015 0.705480 0.000005

Pound/Ounce 0L 4.30oz 0L 7.76oz 0L 11.29oz 1L 0.01oz

Troy Ounce 3.92240 7.07315 10.28825 0.00005

Metric Carat 610.000 1100.000 1600.000 0.005

Momme 32.5335 58.6665 85.3335 0.0005

Pennyweight 78.621 141.776 206.220 0.001

Grain (UK) 1882.74 3395.12 4938.34 0.02

Tael (HK general, Singapore) 3.22755 5.82020 8.46575 0.00005

Tael (HK jewelry) 3.25950 5.87780 8.54950 0.00005

Tael (Taiwan) 3.25330 5.86670 8.53330 0.00005

Tael (China) 3.90400 7.04000 10.24000 0.00005

Tola (India) 10.4597 18.8618 27.4353 0.0001

Messghal 26.0265 46.9335 68.2665 0.0005

i WP FX-200i WP FX-300i WP

Capacity

Minimum display

Unit

FX-1200

Gram 1220.00 2200.00 3200.00 0.01

Ounce (Avoir) 43.0340 77.6025 112.8765 0.0005

Pound 2.68965 4.85015 7.05480 0.00005

Pound/Ounce 2L 11.03oz 4L 13.60oz 7L 0.88oz 1L 0.01oz

Troy Ounce 39.2240 70.7315 102.8825 0.0005

Metric Carat 6100.00 11000.00 16000.00 0.05

Momme 325.335 586.665 853.335 0.005

Pennyweight 786.21 1417.76 2062.20 0.01

Grain (UK) 18827.4 33951.2 49383.4 0.2

Tael (HK general, Singapore) 32.2755 58.2020 84.6575 0.0005

Tael (HK jewelry) 32.5950 58.7780 85.4950 0.0005

Tael (Taiwan) 32.5330 58.6670 85.3330 0.0005

Tael (China) 39.0400 70.4000 102.4000 0.0005

Tola (India) 104.597 188.618 274.353 0.001

Messghal 260.265 469.335 682.665 0.005

i WP FX-2000i WP FX-3000i WP

Capacity

Minimum display

4-2 Storing Units

The units or modes can be selected and stored in the function table. The sequence of displaying the units or modes can be arranged in the function table so as to fit the frequency of use.

Select a unit or mode and arrange the sequence of display as follows:

1 Press and hold the

function table is displayed.

2 Press the SAMPLE key several times to display Unit .

3 Press the PRINT key to enter the unit selection mode.

4 Specify a unit or mode in the order to be displayed using the

following keys.

SAMPLE key To sequentially display the units.

RE-ZERO key To specify a unit or mode. The stabilization

SAMPLE key until ba5fnc of the

indicator appears when the displayed unit or mode is specified.

5 Press the

displays end and then displays the next menu of the function table.

6 Press the CAL key to exit the function table. Then the balance

returns to the weighing mode with the unit specified first in step 4.

Notes When the power is turned on, the scale displays the unit specified first in step 4. In the weighing mode, to select a unit or mode for weighing, press the MODE key.

PRINT key to store the units or modes. The balance

5. WEIGHING

5-1 Basic Operation (Gram Mode)

1 Place a container on the weighing pan, if necessary.

Press the The balance displays 0.00 g. (The decimal point position depends on the balance model.)

2 Place a sample on the pan or in the container.

3 Wait for the stabilization indicator to be displayed. Read the value.

While the stabilization indicator is on, pressing the will output the weight value, using the RS-232C serial interface.

Note Peripheral equipment, that is sold separately , such as a printer or a personal computer is required.

4 Remove the sample and container from the pan.

Notes To use other units, press the MODE key and select an appropriate unit. Press the SAMPLE key to turn on or off the minimum weighing value.

When the ON:OFF key is pressed with a container placed on the weighing pan, the balance displays 0.00 g and weighing is started,

RE-ZERO key to cancel the weight (tare).

PRINT key

5-2 Counting Mode (PCS)

This is the mode to determine the number of objects in a sample based on the standard sample unit mass. Unit mass means the mass of one sample. The smaller the variables in each sample unit mass are, the more accurate the counting will be. The FZ-i WP series and the FX-i WP series balance is equipped with the Automatic Counting Accuracy Improvement (ACAI) function to improve the counting accuracy.

Note If the sample unit mass variable is too large, it may cause a counting error.

Selecting the counting mode

1 Press the MODE key to select 1 pcs (counting mode).

Storing a sample unit mass

2 Press the SAMPLE key to enter the sample unit mass

storing mode.

Even in the storing mode, pressing the

switch to the next mode.

3 To select the number of samples, press the SAMPLE key

several times. It may be set to 5, 10, 25, 50 or 100.

MODE key will

Note A greater number of samples will yield more accurate counting result.

4 Place a container on the weighing pan, if necessary.

Press the The number specified in step 3 appears.

e.g.: 25 0 is displayed if 25 is selected in step 3.

5 Place the number of samples specified on the pan.

In this example, 25 pieces.

6 Wait for the stabilization indicator to come on.

Press the The balance displays 25 count samples with this unit mass. (The sample unit mass stored, even if the AC adapter is removed, is maintained in non-volatile memory.)

To improve the accuracy of the unit mass, proceed to step 8.

Notes If the balance judges that the mass of the samples is too light and is not adequate to be used as the unit mass, it displays lo . In that case, store the mass by some quantity. For example, when the model with the minimum weighing value of 0.01 g is used and 10 pieces of samples weigh 0.05 g. Store 100 pieces of samples as 10 and multiply the weighing result by 10.

RE-ZERO key to cancel the weight (tare).

PRINT key to calculate and store the unit mass.

pcs

(counting mode) and is set to

If the balance judges that the mass of the samples is too light to aquire accurate weighing, it displays an error requiring the addition of more samples to the specified number. In the

PCS

example above, 150- Add 25 samples and press the PRINT key. When the unit mass is stored correctly, the balance proceeds to the counting mode.

appears, requiring 25 more samples.

Counting operation

7 Place the samples to be counted on the pan.

While the stabilization indicator is on, pressing the PRINT key will output the weight value, using the RS-232C serial interface.

Note Peripheral equipment, that is sold separately , such as a printer or a personal computer is required.

Counting mode using the ACAI function

The ACAI is a function that improves the accuracy of the unit mass automatically by increasing the number of samples and averaging the unit mass variable to minimize the weighing error, as the counting process proceeds.

8 If a few more samples are added, the processing indicator turns on. To prevent an error, add three or

more. The processing indicator does not turn on if overloaded. Try to add the same number of samples as displayed.

9 The balance re-calculates the unit mass while the processing indicator is blinking. Do not touch the

balance or samples on the pan until the processing indicator turns off.

10 Counting accuracy is improved when the processing indicator turns off.

Each time the above operation is performed, a more accurate unit mass will be obtained. There is

no definite upper limit of ACAI range for the number of samples exceeding 100. Try to add the same number of samples as displayed.

11 Remove all the samples used in ACAI and proceed with the counting operation using the improved

unit mass.

5-3 Percent Mode (%)

This is the mode to display the weight value in percentage compared to a 100% reference mass and is used for target weighing or checking the sample variable.

Selecting the percent mode

1 Press the MODE key to select % (percent mode).

Storing the 100% reference mass

2 Press the SAMPLE key to enter the 100% reference mass

storing mode.

Even in the storing mode, pressing the

to the next mode.

3 Place a container on the weighing pan, if necessary.

Press the RE-ZERO key to cancel the weight (tare). The balance displays 100 0 % .

4 Place the sample to be set as the 100% reference mass on the

pan or in the container.

5 Press the

balance displays 100.00 % . (The decimal point position depends on the reference value. The reference mass stored, even if the AC adapter is removed, is maintained in non-volatile memory.)

Note If the balance judges that the mass of the sample is too light to be used as a reference, it displays lo . Do not use the sample.

6 Remove the sample.

PRINT key to store the reference mass. The

MODE key will switch

Reading the percentage

7 Place a sample to be compared to the reference mass on the

pan. The displayed percentage is based on the 100% reference mass. While the stabilization indicator is on, pressing the will output the weight value, using the RS-232C serial interface.

PRINT key

Note Peripheral equipment, that is sold separately , such as a printer or a personal computer is required.

5-4 Statistical Calculation Mode

The statistical calculation mode statistically calculates the weight data, and displays or outputs the results. To use the statistical calculation mode, set the "Application function (apf)" parameter of “Application (ap fnc)” in the function table to “2”, as described below. Statistical items available are number of data, sum, maximum, minimum, range (maximum-minimum), average, standard deviation and coefficient of variation. What statistical items to output can be selected from the three modes in the function table.

The wrong data input can be canceled by the key operation, if immediately after the input. Turning the balance off will delete the statistical data. The standard deviation and coefficient of variation are obtained by the equation below:

Standard deviation= where Xi is the i-th weight data, N is number of data.

Standard deviation Coefficient of variation (CV)= x 100 (%) Average

5-4-1 Getting Started Switching to the Statistical Function Mode (Changing The Function Table)

1 Press and hold the SAMPLE key until ba5fnc of

the function table is displayed, then release the key.

2 Press the SAMPLE key several times to display

ap fnc .

3 Press the PRINT key to display apf 0 .

4 Press the RE-ZERO key to display apf 2 .

To select statistical items to output, go to step 5. To store the statistical function mode setting, go to

step 7.

To disable the statistical calculation mode, press

the RE-ZERO key to select apf 0 .

Selecting the statistical items to output

5 Press the SAMPLE key to display 5taf 0 .

6 Press the In the example, 5taf 1 is selected to output the number of data,

sum, maximum, minimum, range (maximum-minimum) and average.

Parameter Description

0 Number of data, sum

7 Press the

Note The statistical calculation mode will be enabled using the ON:OFF key or when the power is turned on.

RE-ZERO key to select the output items.

Number of data, sum Maximum, minimum, range (maximum – minimum), average

Number of data, sum Maximum, minimum, range (maximum – minimum), average, Standard deviation, coefficient of variation

PRINT key to store the setting.

8 Press the

CAL key to return to the weighing mode.

Selecting the unit

9 Press the MODE key to select the unit to be used for

the statistical calculation mode.

Notes Selecting the unit using the MODE key is not available after the data is entered. In this case, clear the data as described on page 24 and select the unit using the MODE key.

When the unit used for the statistical calculation mode is to be enabled upon power-on, select the unit in “Unit (Unit)” of the function table beforehand.

5-4-2 Using The Statistical Calculation Mode Entering data for statistical calculation

Use the following keys to operate the statistical calculation mode.

MODE key

SAMPLE key........ Turns the minimum display on or off, in the weighing mode.

............

When the data is entered, moves between the displaying items (weighing mode,

statistical results and data operation) each time the key is pressed.

When no data has been entered, selects the unit.

RE-ZERO key

......

Sets the display to zero in the weighing mode.

PRINT key............ Outputs the data number and the weight data and includes the weight data to

statistical calculation in the weighing mode. (Output is not in the data format specified in the function table because of the data number added.)

Outputs the statistical results while the statistical results are displayed. (Output is

not in the data format specified in the function table.)

CAL key................ Returns to the weighing mode.

1 Press the

RE-ZERO key to set the display to zero.

2 Place the sample on the weighing pan and wait for the

stabilization indicator to turn on.

3 Press the PRINT key to add the data displayed to statistical

calculation. The number of data on the upper left of the display increases by 1.

4 Repeat steps 1 to 3 for each weighing.

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