Symmetry 124 User manual

© 2014
Precision Balance Series
User Manual
Analytical & Toploader Models
Version 1.00 Effective 22Dec2014 Part Number: 3.01.6.6.12483
Software rev.: V3.08 & above (Force Motor Models)
V4.08 & above (Load Cell Models)
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© 2014
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TABLE OF CONTENTS
1 KNOW YOUR BALANCE.............................................................................................................................................. 3
2 PRODUCT OVERVIEW ................................................................................................................................................ 4
3 SPECIFICATIONS ........................................................................................................................................................ 5
3.1 Precision Analytical Models ............................................................................................................................. 5
3.2 Precision Toploading Models........................................................................................................................... 6
3.3 Toploading Models .......................................................................................................................................... 7
4 UNPACKING & ASSEMBLING THE BALANCE .............................................................................................................. 8
5 LOCATING THE BALANCE......................................................................................................................................... 11
6 SETTING UP THE BALANCE ...................................................................................................................................... 12
6.1 First Steps ...................................................................................................................................................... 12
6.1.1 Levelling the balance .............................................................................................................................. 12
6.1.2 Warm-Up Time ....................................................................................................................................... 12
6.2 CALIBRATION ................................................................................................................................................. 12
6.2.1 Manual Calibration ................................................................................................................................. 12
6.2.2 Calibration using External Calibration mass ........................................................................................... 12
6.2.3 Automatic Calibration............................................................................................................................. 13
6.2.4 Calibration Errors.................................................................................................................................... 13
7 DISPLAY ................................................................................................................................................................... 15
7.1 SYMBOLS AND TEXT....................................................................................................................................... 15
8 KEYPAD.................................................................................................................................................................... 16
8.1 NUMERIC ENTRY METHOD ............................................................................................................................ 17
9 INPUT/OUTPUT ....................................................................................................................................................... 18
10 OPERATIONS ........................................................................................................................................................ 19
10.1 INITIALISATION .............................................................................................................................................. 19
10.2 PASSCODES .................................................................................................................................................... 19
10.3 WEIGHING ..................................................................................................................................................... 20
10.4 FUNCTIONS .................................................................................................................................................... 21
10.4.1 Parts Counting.................................................................................................................................... 22
10.4.2 Percent Weighing ............................................................................................................................... 23
10.4.3 Dynamic (Animal) Weighing............................................................................................................... 24
10.4.4 Density Determination ....................................................................................................................... 26
11 RS-232 INTERFACE ............................................................................................................................................... 28
11.1 HARDWARE.................................................................................................................................................... 28
11.2 STANDARD FORMAT...................................................................................................................................... 29
11.3 INPUT COMMANDS USING REMOTE KEYS..................................................................................................... 29
11.3.1 Invalid Input Command:..................................................................................................................... 30
12 ERROR CHECKING ................................................................................................................................................ 32
13 SUPERVISOR MENUS ........................................................................................................................................... 33
13.1 ENABLE WEIGHING UNITS ............................................................................................................................. 33
13.2 ENABLE WEIGHING MODES ........................................................................................................................... 33
13.3 ENABLE SERIAL INTERFACE PARAMETERS ..................................................................................................... 33
13.4 FORMAT OF CUSTOM FORMS #1 and #2....................................................................................................... 34
13.5 SETUP PARAMETERS...................................................................................................................................... 35
13.6 CALIBRATION SETUP ...................................................................................................................................... 36
13.7 PASSCODES .................................................................................................................................................... 37
14 PERIPHERALS ....................................................................................................................................................... 38
14.1 DENSITY DETERMINATION KIT....................................................................................................................... 38
14.2 ANTI-VIBRATION TABLE ................................................................................................................................. 38
14.3 THERMAL PRINTER ........................................................................................................................................ 38
14.4 REMOTE DISPLAY ........................................................................................................................................... 38
15 SAFETY AND MAINTENANCE................................................................................................................................ 39
16 TROUBLE-SHOOTING ........................................................................................................................................... 39
16.1 TROUBLE-SHOOTING GUIDE. ......................................................................................................................... 40
17 REPLACEMENT PARTS AND ACCESSORIES ........................................................................................................... 43
18 SERVICE INFORMATION ....................................................................................................................................... 44
19 BALANCE MENU STRUCTURE............................................................................................................................... 45
20 WARRANTY INFORMATION ................................................................................................................................. 48
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1 KNOW YOUR BALANCE
This Instruction Manual will familiarise you with the installation, use, general maintenance
etc. of the balance, and will guide you through the various applications. It also covers
accessories, trouble-shooting, after sales service information, and other important
information.
These balances are highly accurate precision instruments and contain sensitive
mechanisms and components. They should be transported and handled with care. When
in operation, be careful to place loads gently on the weighing surface and do not overload
or exceed recommended maximum capacity of the instrument or damage may occur.
Please read this Manual thoroughly before starting operation. If you need any
clarifications, feel free to contact your supplier or manufacturer.
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2 PRODUCT OVERVIEW
These balances are ideal for laboratory and general purpose weighing. They can also be
used for some advanced weighing functions.
FEATURES:
External menu-driven calibration allowing user-selectable range of calibration
weights.
Internal calibration (option) for outstanding accuracy without the need for manual
calibration.
Mains powered with some models offering rechargeable battery pack option for
cordless use.
Solid die-cast aluminium alloy construction with 304 grade stainless steel pan for
durability and easy cleaning.
Large easy to read LCD display with backlight.
Standard applications include weighing, percentage weighing, parts counting,
dynamic / animal weighing (some models), and solid and liquid density
determination (some models).
Bi-directional RS-232 interface as standard (with optional RS232 to USB convertor
accessory), integrated USB interface (some models).
Can be configured to print a GLP Compliant report after each calibration to include
the time, date, balance number and a verification of the calibration.
Force-restoration mechanism for supreme accuracy, or alloy load cell technology
for stable yet accurate weighing.
Automatic temperature compensation.
Multiple weighing units.
Easy to use, wipe-clean sealed membrane keypad.
Below balance weighing facility.
Display in up to 4 languages –English & German as standard. French & Spanish
on some models.
Password protection.
Security locking point.
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3 SPECIFICATIONS
3.1 Precision Analytical Models
(Suffix e for external calibration models, Suffix i for internal calibration models)
Model #
124
214
224
Maximum
Capacity
120 g
210 g
220 g
Readability (d)
0.0001 g
Number of
intervals n=
1200000
2100000
2200000
Recommended
min. weight
0.01 g
Repeatability
(Std. Dev)
0.00015 g
0.0002 g
Linearity +
0.0002 g
Units of Measure
grams, milligrams, carats, grains, ounces, troy ounces, pennyweight,
(some models feature mommes, custom unit).
Stabilization Time
Typically 3 seconds
Operating Temp
10ºC to 40ºC recommended
Power Supply
External mains power adapter - supplied as standard
(Input Voltage 100–240 VAC, 50/60 Hz)
Input Voltage
18 VDC - 830 mA
Weighing
mechanism
Force Restoration Balance Motor
Calibration
External calibration as standard, internal calibration optional
External
Calibration Mass
Fixed value: Recommended OIML class: E2, ASTM/ANSI class: 1
100 g
100 g or 200 g
Display
LCD with blue backlight, 7 characters, 20 mm high, plus symbols
Draft Shield
(w x d x h)
Sliding door Draft Shield (132 x 142 x 233 mm)
Pan Size
Round, 90mm diameter
Overall
Dimensions
(w x d x h)
220 x 310 x 323 mm
8.7 x 12.2 x 12.7 in
Net Weight
5.2 kg / 11 lb 8 oz
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3.2 Precision Toploading Models
(Suffix e for external calibration models, Suffix ifor internal calibration models)
Model #
213
413
Maximum Capacity
210 g
410 g
Readability (d)
0.001 g
Number of intervals
n=
210000
410000
Recommended min.
weight
0.1 g
Repeatability
(Std. Dev)
0.002 g
Linearity +
0.002 g
Units of Measure
grams, milligrams, carats, grains, ounces, troy ounces, pennyweight,
(some models feature mommes, custom unit).
Stabilization Time
Typically 3 seconds
Operating Temp
10ºC to 40ºC recommended
Power Supply
External mains power adapter - supplied as standard
(Input Voltage 100–240 VAC, 50/60 Hz)
Battery pack included with some models.
Input Voltage
18 VDC - 830 mA
Weighing
mechanism
Precision Load Cell
Calibration
External calibration as standard, internal calibration option.
External Calibration
Mass
Fixed value: Recommended OIML class: E2, ASTM/ANSI class: 2
100 g, 200 g
200 g, 400 g
Display
LCD with blue backlight, 7 characters, 20 mm high, plus symbols
Draft Shield
(w x d x h)
Square toughened glass draft shield With alloy Lid (160 x 160 mm)
Pan
Square 304 stainless steel, 130 X 130 mm
Overall Dimensions
(w x d x h)
220 x 310 x 90 mm without breeze shield
8.7 x 12.2 x 3.5 in
Net Weight
3.1 kg / 6 lb 12 oz
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3.3 Toploading Models
(Suffix e for external calibration models, Suffix ifor internal calibration models)
Model #
2202
4202
5001
10001
15001
Maximum Capacity
2200 g
4200 g
5000g
10 kg
15 kg
Readability (d)
0.01 g
0.01 g
0.1g
0.1 g
0.1 g
n=
220000
420000
50000
100000
150000
Min
0.2 g
2 g
Repeatability
(Std. Dev)
0.02 g
0.2g
Linearity +
0.04 g
0.4g
Units of Measure
kilograms, grams, carats, grains, ounces, troy ounces
(some models feature pounds, ounces, lb:oz, mommes, custom unit).
Stabilization Time
Typically 3 seconds
Operating Temp
10ºC to 40ºC recommended
Power Supply
External mains power adapter - supplied as standard
(Input Voltage 100–240 VAC, 50/60 Hz)
Battery pack included with some models.
Input Voltage
18 VDC - 830 mA
Weighing
mechanism
Precision Load Cell
Calibration
External calibration as standard,
internal calibration optional
External calibration as standard
External
Calibration Mass
Fixed value: Recommended OIML
class: F1, ASTM/ANSI class: 3
Fixed value: Recommended OIML class: F2,
ASTM/ANSI class: 4
1 kg, 2 kg
2 kg, 4 kg
2 kg, 5 kg
5 kg, 10 kg
Display
LCD with blue backlight, 7 characters, 20 mm high, plus symbols
Draft Shield
(w x d x h)
None
Pan Size
Trapezoidal, 165 mm X 180 mm sides
Overall
Dimensions
(w x d x h)
220 x 310 x 90 mm
8.7 x 12.2 x 3.5 in
Net Weight
3.4 kg / 7 lb 8 oz
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4 UNPACKING & ASSEMBLING THE BALANCE
Remove the balance from the packing by carefully lifting it out of the box. Inside the box
you will find everything needed to start using the balance.
AC mains power adapter & cord
Stainless Steel Top Pan
Alloy sub-pan
Draught shield (for mg models only)
User documentation
Locate the balance on a solid surface, free from vibration.
For some models, remove the shipping protection screw and transit disc from the top of
the balance and place the top pan support on the balance. Do not use excessive force
when removing and installing the screw.
Gently place the pan support into the receptacle and secure with the supplied screw. To
not over-tighten the screw. It should be finger tight only. Put the Stainless steel pan on top
of the pan support.
If supplied, place the draught shield frame and the top cover around the pan.
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5 LOCATING THE BALANCE
The balance should not be placed in a location that will
reduce the accuracy.
Avoid extremes of temperature. Do not place in direct
sunlight or near air conditioning vents.
Avoid unsuitable tables. The table or floor must be rigid
and not vibrate.
Avoid unstable power sources. Do not use near large
users of electricity such as welding equipment or large
motors.
Do not place near vibrating machinery.
Avoid high humidity that might cause condensation.
Avoid direct contact with water. Do not spray or immerse
the balances in water.
Avoid air movement such as from fans or opening doors.
Do not place near open windows or air-conditioning
vents.
Keep the balance clean. Do not stack material on the
balances when they are not in use.
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6 SETTING UP THE BALANCE
6.1 First Steps
6.1.1 Levelling the balance
After placing the balance in a suitable place, level it by
using the spirit level on the front of the balance. To level
the balance, turn the two adjustable feet at the rear of
the balance until the bubble in the spirit level is centred.
6.1.2 Warm-Up Time
Insert the power supply cable DC connector to the
connector on the rear of the balance. Plug the power
supply module into the mains. The display will indicate
the balance serial number (if set) and the software
revision number, followed by the capacity of the
balance. Next the balance will run a self-test by
displaying all segments followed by a symbol indicating
the balance is in busy mode. If the balance serial
number is not set the display will show dashes. The
display will show zeroes accompanied by the 0
symbol.
Before you start weighing, you have to wait for the balance to achieve a stable internal
temperature.
A stable sign is shown when the balance is in stable
condition. It will turn off if the balance is not stable.
Exact zero is shown when the “0“ symbol is visible
on the left of the display area.
6.2 CALIBRATION
Units with an ‘i’ suffix can be calibrated using either internal calibration mechanism or by
using an external mass. Units with an ‘e’ suffix can only be calibrated with an external
mass. Internal calibration option must be enabled in the setup menu options or else
external calibration mode will be used when the [Cal] key is pressed.
6.2.1 Manual Calibration
Pressing the [Cal] key will start calibration. Calibration can also be initiated by a change in
internal temperature or a set time period as determined by the user.
Pressing [0/T] will abort the calibration at any time
6.2.2 Calibration using Internal Calibration mass (if fitted)
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On pressing the [Cal] key the display will show the busy symbol and a line of dashes and
then after a few seconds will display ‘CALIbrA’. Then the busy symbol and a line of
dashes will reappear, followed by ‘CAL On’. Then ‘CALIbrA’ will appear again, followed by
the busy symbol and a line of dashes. Finally ‘CAL OFF’ will be displayed, followed by a
beep and the busy symbol and a line of dashes. A final beep will sound the end of
calibration and the display should return to ‘0.000 g’ or similar. Internal calibration is now
complete and normal operations may be continued.
6.2.3 Calibration using External Calibration mass
Note: Calibration mass used should be a known accurate item, ideally with an OIML
or ASTM/ANSI classification appropriate to the accuracy of the balance.
On pressing the [Cal] key the display will show the balance setting a new Zero condition
by showing “LOAd 0”. Make sure the pan is empty then press the [Setup] key to continue
The display will show the busy symbol and a line of dashes and then after a few seconds
will display the default calibration mass. For example, for a “213” model (210g capacity,
1mg readability) the display will be “200 g” where 200 g is the default calibration mass.
Place the selected mass on the balance. The balance will automatically continue. The
display will show the busy symbol and a line of dashes and after calibration is complete it
will sound a beep and display “unLOAd”. Remove the weight. Another beep will be heard
confirming the unloading action. The balance will display the busy symbol and a line of
dashes for a few seconds and then sound a beep and return to normal weighing.
6.2.4 Automatic Calibration
The balance has the ability to ask for calibration when the balance has automatic
calibration enabled and the conditions of the automatic calibration have been met.
Conditions that will cause an automatic calibration are:
Internal temperature change greater than a pre-set amount (typically 2ºC for
Precision balances).
Time since last calibration exceeds a pre-set time (typically 4 hours, or 15 minutes
after power is applied).
The balance will call for calibration to be carried out by flashing the “CAL” symbol on the
display. As soon as the balance is calibrated the symbol will be turned off.
The Auto calibration feature can be enabled, disabled or changed within the user options
to meet the requirements of the users.
6.2.5 Calibration Errors
Occasionally during calibration an error will be detected. These errors can be caused by:
Unstable readings
Improper calibration weights being used
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Large shifts of zero from the factory settings
When an error is found a displayed message will be shown and the calibration must be
done again. If the balance has error messages more than once it is possible the
mechanics have been damaged.
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7 DISPLAY
The LCD has several areas-
A large 7 digit area to display the weight with symbols for common weighing units on its
right and symbols for zero, tare (Net) and stability on the left.
Text to show the current operation of function being used.
7.1 SYMBOLS AND TEXT
The LCD has unique symbols to indicate the following:
0
Zero
Busy
Stable
g, mg, kg, ct, dwt, GN, ozt, oz,
N, Custom, g/cc, Pcs, %,
Symbols shown for units and modes
Battery charge symbol
Indicators:
“CAL”
When calibration is occurring or about to occur
“T”
For a time driven calibration
“ºC”
When a temperature is shown or a temperature driven
calibration is to occur
“Net”
When a net weight is shown
“Dynamic”
When the balance is in the dynamic / animal weighing
mode
“HOLD”
When the balance is displaying dynamic weighing result
“Parts”
When the balance is in the Parts counting mode
“Percent”
When the balance is in the Percent weighing mode
“Density Solid”
When the balance is in the Solid Density mode
“Density Liquid”
When the balance is in the Liquid Density mode
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8 KEYPAD
(Design may vary slightly)
The keypad has the following keys to operate the balance.
Keys
Primary function
[POWER] To turn the balance to ON or Standby
[0/T]
[0/T] A combined zero and tare function.
To escape from setup functions and modes.
[Cal]
[Cal] Starts the calibration function
[Print]
[Print] Instructs the balance to print data
[Mode]
[Mode] Enters the Mode Selection Menu
[Unit]
[Unit] Selects weighing units by cycling through a set of
enabled units.
[Setup]
[Setup] Enters the setup parameters (Supervisor Menus).
Enters a function or saves a value while manually entering
unit weight or check weighing limits.
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[Down] To decrement or change a displayed value or scroll
through options backwards
[Right] To advance a flashing digit by one position to the
right.
To go back by one step during setup functions
[Left] To advance a flashing digit by one position to the left
[Up] To increase or change a displayed value or scroll
through options forward
8.1 NUMERIC ENTRY METHOD
To set a value when required, use the keys as given below-
[Up] and [Down] symbol keys to increase or decrease the flashing digit,
[Right] and [Left] symbol keys to advance or move back the digit and
[Setup] key to accept the value
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9 INPUT/OUTPUT
The rear panel has the following connectors:
RS-232 serial - 9 pin d-subminiature plug.
Remote display connector (USB type A socket).
I/O connector (USB type B socket).
Power input socket. (Required power input is a low-voltage external supply, 18VDC
@ 830mA for all models). Accepts concentric barrel plug 11.4mm length X 5.5mm
outside diameter X 2.1mm centre diameter.
There is also a battery cover and slot for the rechargeable NiMH battery pack (if available
with your model). Due to the high power requirements of the analytical balance weighing
mechanism and the internal calibration mechanism, it is not recommended to use battery
power for these options.
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