How it Works
Ohaus
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AP250D
Service Manual
76 pgs823.02 Kb0
Table of contents
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Ohaus AP250E, AP310E, AP210E, AP110E, AP250D Service Manual

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ANALYTICAL
Electronic Balances Models AP1 10, AP210, AP310, AP250D, AP1 10E, AP210E, AP310E and AP250E
Plus
Instruction Manual

NOTE: THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS FOR

A CLASS A DIGITAL DEVICE, PURSUANT TO PART 15 OF THE FCC RULES. THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST HARMFUL
INTERFERENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT. THIS EQUIPMENT GENERATES, USES, AND CAN RADIATE RADIO FREQUENCY ENERGY AND, IF NOT INSTALLED AND USED IN ACCORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS. OPERATION OF THIS EQUIP­MENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE HARMFUL INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS OWN EX­PENSE.
THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIMITS FOR RADIO NOISE EMISSIONS FROM DIGITAL APPARATUS AS SET OUT IN THE INTERFERENCE-CAUSING EQUIP­MENT STANDARD ENTITLED “DIGITAL APPARATUS”, ICES-003 OF THE DEPARTMENT OF COMMUNICATIONS.
CET APPAREIL NUMERIQUE RESPECTE LES LIMITES DE BRUITS RADIOELECTRIQUES APPLICABLES AUX APPAREILS NUMERIQUES DE CLASSE A PRESCRITES DANS LA NORME SUR LE MATERIEL BROUILLEUR: “APPAREILS NUMERIQUES”, NMB-003 EDICTEE PAR LE MINISTRE DES COMMUNICATIONS.
Unauthorized changes or modifications to this equipment are not permitted.
The exclamation point within the tri­angle is a warning sign alerting you of important instruc­tions accompany­ing the product.

TABLE OF CONTENTS

INTRODUCTION ............................................................................................................. 1
DESCRIPTION ................................................................................................................ 1
FEATURES ..................................................................................................................... 1
UNPACKING ................................................................................................................... 2
INSTALLATION ............................................................................................................... 3
Environment ............................................................................................................. 3
Weigh Below Hook ................................................................................................... 3
Leveling the Balance ................................................................................................ 4
Installing the Pan Assembly ..................................................................................... 4
In-Service Cover....................................................................................................... 4
RS232 Interface ....................................................................................................... 5
Hardware .............................................................................................................. 5
Output Formats..................................................................................................... 5
RS232 Commands ................................................................................................... 5
Connecting Power .................................................................................................... 8
Spare Fuse............................................................................................................... 8
Self Test ................................................................................................................... 8
OPERATION ................................................................................................................... 9
Switch Functions ...................................................................................................... 9
Symbols Used for Operation of the Balance .......................................................... 10
Navigating the Menus............................................................................................. 11
Operational Guide/Index ........................................................................................ 12
Turning the Balance On ......................................................................................... 13
Display Indications ................................................................................................. 13
Stabilization ............................................................................................................ 14
Auto Range (AP250D and E Only)......................................................................... 14
Weighing ................................................................................................................ 14
Taring ..................................................................................................................... 14
Percent Weighing ................................................................................................... 15
Parts Counting........................................................................................................ 16
Check Weighing ..................................................................................................... 17
Animal Weighing .................................................................................................... 18
Fill Guide ................................................................................................................ 19
Reference Weight ............................................................................................... 19
i
Reference Number ............................................................................................. 20
High Point............................................................................................................... 20
Printing Data........................................................................................................... 21
Time and Date .................................................................................................... 21
List ...................................................................................................................... 22
Automatic Calibration Printout ............................................................................ 23
User Calibration Printout .................................................................................... 23
Calibration Test Printout ..................................................................................... 23
Statistics Printout ................................................................................................ 24
Sampling............................................................................................................. 24
Percent Weighing ............................................................................................... 25
Parts Counting .................................................................................................... 25
Check Weighing ................................................................................................. 26
FillGuide
MENUS.......................................................................................................................... 27
MENU LOCK-OUT PROTECTION................................................................................ 28
CALIBRATION MENU ................................................................................................... 29
Calibration Menu Protection ................................................................................... 29
Auto Calibration...................................................................................................... 29
User Calibration...................................................................................................... 30
Cal Test .................................................................................................................. 31
Cal End................................................................................................................... 31
TM
........................................................................................................... 26
USER MENU ................................................................................................................. 32
User Menu Protection............................................................................................. 32
Reset ...................................................................................................................... 32
Averaging Level...................................................................................................... 33
Stability Range ....................................................................................................... 33
Auto-Zero ............................................................................................................... 34
Dual Range Function.............................................................................................. 34
Exiting User Menu .................................................................................................. 34
ii
SETUP MENU ............................................................................................................... 35
Setup Menu Protection........................................................................................... 36
Reset ...................................................................................................................... 36
Type Approved/LFT................................................................................................ 37
Unit Selection ......................................................................................................... 37
Functions................................................................................................................ 38
Statistics ................................................................................................................. 39
Net.......................................................................................................................... 40
Custom Unit or Volume Selection .......................................................................... 40
Good Laboratory Practices..................................................................................... 42
Parts Counting Error............................................................................................... 43
Check Weighing Options........................................................................................ 43
Sample Displays..................................................................................................... 44
Animal Weighing Options ....................................................................................... 46
Fill Option ............................................................................................................... 46
Time ....................................................................................................................... 47
Adjust ..................................................................................................................... 48
Date........................................................................................................................ 49
Lockswitch.............................................................................................................. 50
List.......................................................................................................................... 50
Exit Setup Menu ..................................................................................................... 50
PRINT MENU ................................................................................................................ 51
Print Menu Protection............................................................................................. 51
Reset ...................................................................................................................... 52
Communication ...................................................................................................... 52
Baud Rate........................................................................................................... 53
Data Bits ............................................................................................................. 53
Parity................................................................................................................... 54
Stop Bits ............................................................................................................. 54
Good Laboratory Practices (GLP) .......................................................................... 54
Print Options........................................................................................................... 55
Auto Print Feature .............................................................................................. 55
Initialize............................................................................................................... 56
iii
Print Stable Data Only ........................................................................................ 57
Print Numeric Data Only ..................................................................................... 57
Time.................................................................................................................... 58
Date .................................................................................................................... 58
Reference ........................................................................................................... 58
Difference ........................................................................................................... 59
List ...................................................................................................................... 59
CARE AND MAINTENANCE......................................................................................... 60
TROUBLESHOOTING .................................................................................................. 60
Error Codes List ..................................................................................................... 61
SERVICE INFORMATION............................................................................................. 63
REPLACEMENT PARTS............................................................................................... 63
ACCESSORIES............................................................................................................. 63
SPECIFICATIONS......................................................................................................... 64
DECLARATION OF CONFORMITY.............................................................................. 65
LIMITED WARRANTY................................................................................................... 69
iv

INTRODUCTION

INTRODUCTION
This manual covers Installation, Operation and Troubleshooting for the Ohaus ANALYTI­CAL Plus Series of Electronic balances, Models AP110, AP210, AP310, AP250D, AP110E, AP210E, AP310E and AP250E. Suffixes after the basic model number are: D = Moveable FineRange Min, Class, etc.) on a serial number plate located on the side of the balance. To ensure proper operation of the balance, please read this manual completely.
TM
and E= Type Approved with CE conformance and bear official markings (Max,

DESCRIPTION

The Ohaus ANALYTICAL Plus Series balances are high precision weighing instruments, designed to be versatile, accurate, easy to operate and will provide years of service with virtually no maintenance. The Analytical Plus series is constructed using a die-cast aluminum base finished with a durable corrosion resistant epoxy powder paint. The weighing area is protected from air currents by a draft shield. It contains solid-state precision electronics PC boards, and a seven and a half, 0.5 inch digit, Vacuum Fluorescent display. Each balance operates through a series of menus which enhances operation. A built in lockswitch prevents preset settings from being changed.

FEATURES

Analytical Plus balances contain four main display menus which enable you to calibrate and configure the balance for specific operating requirements. MENU When
pressed and released with MENU displayed, allows access to the calibration, user, setup and print menus.
ON
TARE
switch is
CALIBRATION Menu - Allows the balance to be calibrated by using either Auto, User or Test calibration methods. The test function is used to verify the last calibration.
USER Menu - Allows the balance to be set for environmental conditions. Reset, averaging level, stability range and auto-zero functions can be set.
SETUP Menu - Allows the balance to be customized for specific weighing functions. PRINT Menu - Allows the selection of parameters under which the balance will interface
to a computer or a printer.
Each of these menus contain selectable parameters which can be entered via the front panel switches. Storing of the parameters is accomplished by selecting at the completion of all selections in a particular menu. For a detailed description of each feature, refer to the individual menus in this manual.
1
INSTALLATION

UNPACKING

Your ANALYTICAL Plus balance was shipped with the following items:
• Pan assembly (including pan, shield, ring and assembly instructions)
• In-service cover
• AC power cord
• Spare fuse
• Instruction manual
• Warranty card
Remove the contents from the carton and carefully remove all packing material. It is recommended to save the carton and packing material for storing and/or transporting the balance. Verify that all of the components have been included and there has been no damage during shipment.
ANALYTICAL
BALANCE
In-Service Cover
Plus
REAR VIEW
Pan
Ring
Shield
2

INSTALLATION

INSTALLATION

Environment

The balance should always be used in an environment which is free from excessive air currents, corrosives, vibration, and temperature or humidity extremes. These factors will affect displayed weight readings.
DO NOT install the balance:
• next to open windows or doors causing drafts or rapid temperature changes.
• near air conditioning or heat vents.
• near vibrating, rotating or reciprocating equipment.
• near magnetic fields or devices that may generate magnetic fields (i.e. motors, alterna-
tors, etc.)
• on an unlevel work surface.
Install the balance in the location where it will be used before proceeding.

Weigh Below Hook

A weigh below hook is provided inside the bottom cover under the protective plate shown in the illustration.
To access the weigh below hook, care­fully turn the balance on it's side, loosen the screw which secures the cover plate, rotate the plate to clear the hole, then secure the plate in that position. Return the balance to an upright position. Mount the balance on a stable, level elevated platform and install a hook.
Weigh Below
Hook Cover
Plate
3
INSTALLATION

Leveling the Balance

The balance is equipped with a level indicator on the floor of the weighing chamber and two adjustable leveling feet at the rear. Adjust the leveling feet until the bubble appears in the center circle of the level indicator.

Installing the Pan Assembly

1. Place the shield onto the keyed bushing and press it down into place. The bent tabs must be facing upward and the shield should be flat against the chamber floor.
Level
Indicator
Leveling
Feet
2. Place the ring over the shield. The lip on the bottom of the ring should fit against the shield to keep it from moving.
3. Insert the pan in the load receiver hole, matching the key on the pan shaft with the slot in the hole. Gently press the pan down into place.

In-Service Cover

Place the cover snugly over the display unit.
Pan Ring
Shield
Keyed Bushing
4
INSTALLATION

RS232 INTERFACE

ANALYTICAL Plus balances are equipped with a bi-directional RS232 compatible interface for communication with printers and computers. When the balance is connected directly to a printer, displayed data can be output at any time by simply pressing PRINT, or by using the Auto Print feature.
Connecting the balance to a computer enables you to operate the balance from the computer, as well as receive data such as displayed weight, weighing mode, stability status, etc.
The following sections describe the hardware and software provided with the balance.

Hardware

On the rear of the balance, a 9-pin subminia­ture “D” connector is provided for interfacing to other devices. The pinout and pin connections are shown in the adjacent illustration.
The balance will not output any data unless pin 5 (CTS) is held in an ON state (+3 to +15 V dc). Interfaces not utilizing the CTS handshake may tie pin 5 to pin 6 to defeat it.

Output Formats

Data output can be initiated in one of three ways: 1) By pressing PRINT; 2) Using the Auto Print feature; 3) Sending a print command (“P”) from a computer.
The output format is illustrated in the RS232 command table which follows.

RS232 Commands

All communication is accomplished using stan­dard ASCII format. Only the characters shown in the following table are acknowledged by the balance. Any other commands, control char­acters or spaces are ignored. Commands sent to the balance must be terminated with a carriage return (CR) or carriage return-line line feed (CRLF). For example, a tare command should appear as shown in the adjacent dia­gram. Data output by the balance is always terminated with a carriage return - line feed (CRLF).
TARE *
PRINT *
1 5 V dc (5 mA max.) 2 Data Out (TXD) 3 Data In (RXD) 4* Tare (External signal) 5 Clear To Send (CTS) 6 Data Terminal Ready (DTR) 7 Ground 8 Request To Send (RTS) 9* Print (External signal)
* External PRINT and/or TARE
switches may be installed as shown in the diagram. Momentary contact switches must be used.
TARE COMMAND
Field: T CR LF
Length: 1 1 1
5
INSTALLATION
Command
Character Description
RS232 COMMAND TABLE
? Print current unit.
Grams, Dwt, Carat, Oz Av, Oz t, Grain, Tael 1, Tael 2, Tael 3, Momme, Custom Unit
xI Set averaging level to “x”, where x = 0, 1, 2
xM Places balance in mode “x”, where x = 1 to 11
(see table). If unit is not already enabled,
command will be ignored.
P Print display data
When “numeric only” displaydata is selected for output in the RS232 menu, the Mode field is not output.
hhmmss TIME Set current time to “hh: mm: ss”, hh is between 0 - 23. TIME Print current time.
mmddyy DATE Set current date “mmddyy”. DATE Print current date. % Print current % ref. # Print current ref., any function. AC Abort calibration /Test. C Start an auto calibration. E Go to initial state of current function. F Print current function. M Same as mode button. xD Set 1 second print delay (set x = 0 for OFF, or x = 1 for ON). ID Print current ID string. xxxxID Enter ID string (xxxx limit to 8 characters).
Field: Mode Stab CR LF
Length: 5 1 1 1
0 = minimum level 1= 2 = maximum level
1 = grams 2 = pennyweight 3 = carats 4 = avoidupois ounces 5 = troy ounces 6 = grains 7 = taels 8 = mommes
11 = custom unit
Field: Weight Mode Stab CR LF
Length: 10 1 5 1 1 1
Displayed weight sent right justified w/lead zero blanking. Nine characters include:
decimal point (1) weight (7 max)) polarity (1): blank if positive
6
blank if stable “ ? ” if unstable
Same as ? command
“ - ” if negative
Command
Character Description
xS Set stable data only printing (set x = 0 for OFF, or x = 1 for ON. T Same effect as pressing on tare button. V Print EPROM version
Field: Model # 1 EPROM # CR LF
Length: 6 16 1 1
INSTALLATION
Balance Model
x# Set current ref., any function, CW takes two reference separated by a space. x% Doanloads reference weight “x” for percent mode. “x” must be in grams. Command is
ignored if percent mode is disabled. If percent mode is enabled, balance will automatically switch to percent mode display.
xF Set current function to “x”. x = 0 to 6. Setup menu must be unlocked.
xZ Set Auto Zero to “x”. x = 0 for OFF, x = 1 for ON xSL Set stability level. User menu must be unlocked. x = 0 to 3 Z Zero request (Gross tare) if Net/Gross enabled.
nnnA Set Auto Print feature to “nnn” (see table).
nnn = 0 Turns feature OFF
nnn = S Output on stability nnn = C Output is continuous nnn = 1-256 Sets Auto Print interval
Esc L Prints listing of Setup and Print menu settings. Esc R Resets Setup and Print menus to factory defaults.
CAUTION: This will reset RS232 configuration.
Esc S Save current settings.
“98101-xx Sr#x.xx”
0 = None 1 = Percent 2 = Parts Counting 3 = Check Weighing 4 = Animal Weighing 5 = Fill Guide 6 = High Point
7
INSTALLATION

Connecting Power

1. Before connecting the power cord, check that the line voltage switch located at the rear of the balance is set correctly for your location. If not, use a small screwdriver to set the switch correctly.
2. Make sure the doors to the weighing cham­ber are closed.
2. Connect the power cord receptacle to the plug on the rear of the balance.
3. Plug the power cord only into a convenient grounded AC outlet. The balance signals one long beep to indicate power has been applied.

Spare Fuse

A spare fuse is provided in the fuse holder as shown in the diagram. All models use a T 160 mA/250 V fuse.
Power
Connection
Fuse Holder
115V
230V
Line
Voltage
Switch
For 100-120 V∼
For 220 240 V∼
Active Fuse
Spare Fuse

Self Test

When power is applied to the balance, it begins a self test cycle. During this time, the display cycles as shown.
NOTE: Sr shown in the display is the software revision and may be different in your balance.
After the self test is completed, the display turns off. Allow the balance to stabilize for about 2 hours before using it.
s R 3.1
c h e c · ·
8

OPERATION

Switch Functions

OPERATION
PRINT
ON
TARE
OFF
MODE
PRINT
MODE
Press and Release:
Turns on the balance if it is off, zeros the balance. In the menu system, this button is used to accept a choice or enter a submenu.
Press and Release:
Turns the balance off.
Press and Release:
Selects weighing units functions or options. In menus, changes to next step or value.
Press and Release:
Sends weight data, statistical data, GLP data to computer/printer. In menus, allows returning to a previous menu step.
OFF
ON
TARE
Before using the balance, carefully review the Symbols Used for Operation of the Balance shown on page 10, Navigating the Menus on page 11and Operational Guide/Index on page
12.
Please read the entire manual as there are many features which can be enabled. The balance is shipped from the factory ready to operate with default settings as shown in the menus.
The balance is a high precision instrument and will give you years of service if kept clean and handled carefully. If you have any problems operating the instrument or require additional information, please feel free to contact our Customer Service Department at (800) 526-0659.
9
OPERATION

Symbols Used for Operation of the Balance

This instruction manual uses certain symbols to explain various operational procedures and actions that occur. Examples of the symbols used are shown as follows:
Pushbutton Switches:
ON
= NORMAL PRESS AND RELEASE
TARE
ON
= MULTIPLE PRESS
TARE
ON
Display Area:
= PRESS AND HOLD FOR DESIRED DISPLAY
TARE
DISPLAY AREA - AS A RESULT OF USER ACTION
DISPLAY AREA - AUTO CHANGE OCCURS
DISPLAY AREA -SWITCHES BACK AND FORTH
10
OPERATION

Navigating the Menus

There are four menus used in the balance: CALIBRATION USER SETUP PRINT
To enter the menus, the released, CAL is displayed which is the Calibration menu.
When in the menus, repeated pressing of menus. CALIBRATION USER SETUP PRINT END
Each menu contains selections (submenus) which can be set for specific operations.
MODE
The
button is used to advance though the submenu selections. The
or accepts the submenu selection and returns to the beginning of the submenu selection.
PRINT
The
button is used to backup in the submenu if a change is desired.
The following sample illustrates the USER menu and submenu items
ON
button is pressed and held until MENU is displayed. When
TARE
MODE
advances through the
MENU
ON
button enters
TARE
END USER
ON
DUAL
OFF
AUTO ZERO
ON
OFF
RULES: Use
Use
Use After selections are made, always exit menus through END
store settings.
USER
RESET
YES
NO
AL
STABILTY
MODE
button to advance.
ON
button to enter or accept submenu.
TARE
PRINT
button to backup.
NOTE:
Each menu is constructed in the form of a loop. Advancing from one submenu item to the next
0 1
by using the will eventually return to
the beginning of the menu
2
* Only on AP250D Models.
0
1 2
3
MODE
button
to
MENU
11
OPERATION

Operational Guide/Index

The Operational Guide/Index lists the pages for all balance operations and options. After settings are made, exit menus to save settings.
FUNCTION TO OPERATE SETUP
(See pages) (See pages)
1. Turning the Balance ON 13 ----
2. Weighing (grams) 14 ----
3. Taring 14 ----
4. Percent Weighing 15 38
5. Parts Counting 16 38, 43
6. Check weighing 17 38, 43
7. Animal Weighing 18 38, 46
8. Fill Guide 19 38, 46
9. High Point 20 38
10. Printing Data 21 to 26 50, 51, 55 to 59
11. List 22 50, 59
12. Menu Lockout 28 ----
13. Calibration 29 to 31 ----
14. Net/Gross Weighing ---- 40
15. Custom Units ---- 40
16. GLP ---- 42, 54
17. Time ---- 47, 48
18. Date ---- 49
19. Lockswitch ---- 50
20. Legal for Trade ---- 35, 37
21. Changing Units ---- 37
22. Statistics ---- 39
23. Averaging Level ---- 32, 33
24. Stability ---- 32, 33
25. Auto Zero ---- 32, 34
26. Dual Range (AP250D) ---- 32, 34
27. Reset User ---- 32
28. Reset Setup ---- 36
29. Reset Print ---- 52
30. Communications ---- 52 to 54
12
OPERATION

Turning the Balance ON

1. After the Self Test in the Installation Section is completed (power applied to the balance), make sure the pan on the balance is clear, then, close the chamber doors.
ON
TARE
ap25FD
sR3.1
2.
˛
0.00000
s
g
g

Display Indications

The following table describes each of the display indicators.
DISPLAY INDICATORS
grams check weighing limits pennyweight custom unit/volume carats net indicator ounces parts counting troy ounces percent weighing grains stability indicator taels gross (total) indicator mommes fill guide user calibration indicator center of zero
I
capacity guide
13
OPERATION

Stabilization

Before initally using the balance, allow time for it to adjust to its new environment. The balance only requires to be plugged in to warm up. Recommended warm up period is twenty (20) minutes. The balance is powered whenever it is plugged into a power source.

Auto Range (AP250D and E Only)

Modes AP250D and E offer both a fine range (0.01 mg readability from 0 to 52 g) and a coarse range (0.1 mg over 52 g). When first turned on, the balance is in the fine range. It remains in this range until the weight on the pan exceeds 52 g. When weight on the pan is greater than 52 g, the balance switches to the coarse range.
If weight on the pan falls below 52 g, it automatically switches back to the fine range.

Weighing

ON
1.
to rezero the display.
TARE
2. Place the object(s) or material to be weighed on the pan.
3. Wait for the stability indicator to appear before reading the weight.
STABILITY INDICATOR
200.0000
s
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
g
NOTE: The capacity guide (bars) indicates the percentage of the current weight to the
balance capacity. The example above illustrates a 200 gram weight, (balance full capacity 210 grams).
CAPACITY GUIDE

Taring

When weighing material or objects that must be held in a container, taring stores the container weight in the balance’s memory, separate from the weight of the material in the container.
1. Place an empty container on the pan. Its weight is displayed.
ON
2.
3. Add material to the container. As material is added, its net weight is displayed.
4. Removing the container and material from the pan will cause the balance to display the
5.
, the display blanks until stable weight readings are received, then indicates
TARE
zero. The container’s weight is stored in memory.
container’s weight as a negative number.
ON
resets the balance to zero.
TARE
14

Percent Weighing

OPERATION
Percent Weighing is Percent Function is selected under the Setup menu. Refer to page 38. Percent weighing permits you to place a reference load on the balance, then view other loads as a percent­age of the reference. The load you place on the platform as a reference may be displayed as any percentage you select from 5% to 100%
enabled only
when the
EXAMPLE
A 10g reference load is set for 20%:
• A subsequent load of 100 g will be displayed as 200%.
• A subsequent load of 200 g will be displayed as 400%.
(in 1% increments). One hundred percent does not necessarily have to represent the reference load. Subsequent loads, displayed as a percentage of the reference are limited only by the capacity of the balance. The default setting is Reference 100%.
To perform percent weighing when in a weighing mode, use the following procedure:
ON
1.
TARE
pCT cON
.
%
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
2. Place an empty container on the pan (if one will be used).
ON
3.
. This is the current reference percentage.
TARE
seT 100
%
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
NOTE: The reference percentage can be changed to any value from 5 to 100.
MODE
4.
NOTE:
seT 5
increments to .
%
PRINT
does not return to a lower number. Instead, it sends Set x%
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
seT 100
%
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
command through the RS232 Interface, where x = 5 to 100.
5. When the selected reference value appears on the display, place the reference load in the container (or directly on the pan if no container is used).
ON
8.
, display indicates the reference load as the percent-
TARE
100.0
%s
IIIIIIIIIIIIIIIIIIIIIIIIIIIIII II I
age entered. The bar graph indicates the load relative to the capacity of the balance.
9. Remove the reference load from the balance and replace it with another load. The second load is displayed as a percentage of the reference.
10.
MODE
to view alternate display in units.
100.0000
%s
11.To restart percent weighing at any time,
ON
12.
to exit to a weighing mode.
TARE
IIIIIIIIIIIIIIIIIIIIIIIIIIII I
g
ON
TARE
pCT cON
.
%
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
15
OPERATION

Parts Counting

Parts Counting is menu. Refer to page 38. In the parts counting mode, the balance displays the quantity of parts you place on the pan. Since the balance determines the quantity based on the average weight of a single part, all parts must be reasonably uniform in weight. The accuracy of parts counting results is determined by the error level entered in PC Err of the Setup Options submenu. Refer to page 43. The default setting for PC Err is off.
To perform parts counting when in a weighing mode, use the following procedure:
enabled only
when the Parts Counting Function is selected in the Setup
ON
1.
TARE
ON
2.
TARE
PC
.
. The balance requires a sample of the parts to use
pc cON
PC
aDD 5
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I as a reference for counting. The default for the sample size is 5 parts, but this can be changed to 10, 20, 30, 40, 50, or 100 parts by
MODE
(Larger samples yield
more accurate results). Add the required number of sample pieces to the pan.
ON
3.
TARE
PC
(indicates 5 pieces).
5
5
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
4. If Add X is displayed, the sample is too small to provide results within the selected error level (PC Error of the Setup Options submenu).
NOTE:X represents the number of additional parts needed to provide a sufficient sample.
5. Add the required number of parts, then
ON
again.
TARE
6. To count additional pieces, add them to the pan. The display indicates the actual number of pieces based on their sample size. Tolerance will be within whatever was selected under the Parts Counting Error Level.
NOTE:If the balance controls are not touched, the sample size is stored in memory. You
can continue to use the balance to measure quantities as long as the samples to be measured are of the same weight.
MODE
7.
to display the weight of the pieces on the pan.
MODE
8.
again to display the number of pieces.
9. To restart parts counting,
MODE
10.
, the balance returns to a weighing mode.
ON
TARE
PC
pc cON
.
16
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I

Check Weighing

OPERATION
Check Weighing is
enabled only
when the Check Weighing Function is selected in the Setup menu. Refer to page 38. Refer to page 43, Check Weighing Options under the Setup menu to set the Reference Type and Display Type options. In the check weighing mode, a reference weight can be set into the balance either as a reference weight on the pan or as a user entered number. The balance display shows either under, accept or over as each sample is weighed.
If reference weight was selected under CW Options submenu:
1. With the balance in the weighing mode,
ON
.
TARE
seT Ref
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
NOTE:If reference number was selected, go to step 7.
2. Place a sample weight on the pan which is considered to be the under limit for check weighing.
ON
3.
.
TARE
seT Ref
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
4. Place a sample weight on the pan which is considered to be the over weight limit for check weighing.
ON
. The display blanks until a stable reading is achieved, then it goes to either
5.
TARE
the (Normal, None or Sign) display type previously selected in CW Options submenu to indicate under, over or acceptacle limits of the objects being weighed.
6. Check weighing can now be made by removing a sample and placing a new sample on the pan.
If reference number was selected under the CW Options submenu:
7. With the balance in the weighing mode,
ON
.
TARE
seT Ref
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I
MODE
8.
9.
10.
11.
to return to weighing.
ON
TARE
MODE
until the first digit (under weight) is correctly displayed.
ON
to accept the value.
TARE
UNDER
000.0000
indicates under value with first digit flashing.
g
12.Repeat steps 10 and 11and set all digits to the desired value. When the last digit is entered, display changes to an over value to be entered with the first digit flashing
000.0000
NOTE:
PRINT
OVER
.
g
allows going back.
17
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