marsden B-300 User manual

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B-300
USER MANUAL
PLEASE TAKE THE TIME TO READ THESE INSTRUCTIONS BEFORE
STARTING TO USE THE SCALES

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TABLE OF CONTENTS
TABLE OF CONTENTS ...................................................................1
INTRODUCTION..............................................................................2
SAFETY INSTRUCTION..................................................................2
CLEANING.......................................................................................3
MAINTENANCE...............................................................................3
DISPOSING OF THE SCALE...........................................................3
Explanation of the graphic symbols..................................................4
TO Ready Scale for Use ..................................................................5
POWER SUPPLY & LOW BATTERY...............................................5
INSTRUCTION OF BACKLIGHT FUNCTION..................................5
POWER SUPPLY & RS232.............................................................. 6
INSTALLING THE BATTERY ...........................................................6
SPECIFICATIONS............................................................................7
PANEL..............................................................................................8
LCD DISPLAY..................................................................................9
KEY FUNCTION DESCRIPTION:....................................................9
GENERAL WEIGHING OPERATION............................................. 10
INSTRUCTION OF TARE FUNCTION............................................11
INSTRUCTION OF HOLD FUNCTION ..........................................12
COUNTING FEATURE...................................................................13
CALIBRATION FUNCTION............................................................ 14
CALIBRATION PROCEDURE........................................................ 14
INSTRUCTION AUTO SHUT-OFF FUNCTION.............................. 15
INSTRUCTION OF INTERNAL SETTING......................................16
ERROR MESSAGE........................................................................ 18
ROHS COMPLIANCE.................................................................... 21

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INTRODUCTION
Thank you for purchasing a Marsden Parcel Scale. Please read this
instruction manual carefully before use. Keep these instructions
handy for future reference.
SAFETY INSTRUCTION
Before putting the device into use, please read with care the
information given in the Operating Instructions. They contain
important instructions for installation, proper use and maintenance of the
device.
The manufacturer shall not be liable for damages arising out of failure to
heed the following instructions:
When using electrical components under increased safety requirements,
always comply with the appropriate regulations.
Improper installation will render the warranty null and void.
Ensure the voltage marked on the power supply unit matches your mains
power supply.
This device is designed for use indoors.
Observe the permissible ambient temperatures for use
The device meets the requirements for electromagnetic compatibility. Do
not exceed the maximum values specified in the applicable standards.
These batteries should be kept away from small children. If swallowed,
promptly seek medical assistance.
Expected Service Life: 5 years
If you have any problem, contact your local service partner.

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CLEANING
We would recommend using alcohol based wipes or similar when cleaning
the scales.
Please do not use large amounts of water when cleaning the scales as
this will cause damage to the scales electronics, you should also refrain
from using corrosive liquids or high pressure washers.
Always disconnect the scales from the mains power supply before
cleaning.
MAINTENANCE
The scale does not require any routine maintenance. However, we
recommend checking the scale’s accuracy at regular intervals. The
regularity of these checks is dependent on the level of use and the state of
the scale. If any inaccuracies occur, please contact your local dealer or
service partner
DISPOSING OF THE SCALE
This product is not to be treated as regular household waste, but should
be handed in to an electrical/electronic equipment recycling centre.
You can obtain further details from your local council, your municipal
waste disposal company or the firm which you purchased the product

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Explanation of the graphic symbols
SN-21300100
Designation of the serial number of every
device, applied at the device.
(Number as an example)
“Please note the accompanying documents“
or “Observe operating instructions”
Type B applied part
Dispose of old appliances separately from
your household waste!!
Instead, take them to communal collection
points.
Carefully read this operation manual
before setup and commissioning, even if
you are already familiar with Marsden
scales.
Transport and storage temperature limit
indicating the upper and the lower limit
(Transport and storage temperature on
packaging)
+60°C
-20°C

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TO Ready Scale for Use
1. Remove the scale from its box along with its stainless steel
platform cover. Remove any protective film from the platform
cover.
2. Place the scale on a hard, flat surface. Uneven surfaces will affect
accuracy. If using the adapter, make sure the scale is not resting
on the cord, otherwise it may be unstable.
POWER SUPPLY & LOW BATTERY
1. The B-300 scale uses 4 x AA size alkaline batteries.
2. Low battery indication will display on LCD display when battery
power is insufficient to perform the weighing.
3. When “ ” is displayed, please change batteries.
Please refer to “INSTALLING THE BATTERY”.
INSTRUCTION OF BACKLIGHT FUNCTION
Your B-300 scale is equipped with a backlight feature for easy
viewing. While the scale is on, press and hold the “UNIT / ” button
for 3 seconds to activate the backlight. The backlight will activate for
3 seconds when a button is pushed, or when weight is added or
removed from the platform. Press and hold “UNIT / ” for 3
seconds to deactivate the backlight.

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POWER SUPPLY & RS232
Make sure the battery pack is installed in the battery box of indicator,
or, plug the connector of AC ADAPTOR (15V 0.3A) in the scale.
INSTALLING THE BATTERY
B-300 uses 4 x AA size alkaline batteries (not included) for operation.
If you want scale to be operated by battery, please install batteries by
referring to instruction below.
You can also use the adaptor (standard) as power supply.
Adaptor plug
Installing 4 x AA 1.5V batteries
RS232

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SPECIFICATIONS
MODEL#
B-300
Capacity
Division
22kg x
0.01kg
50 lb x
0.02 lb
30kg x
0.02kg
60 lb x
0.05 lb
70kg x
0.05kg
150 lb x
0.1 lb
120kg x
0.1kg
250 lb x
0.2 lb
Units of Measure
kg, lb
Function keys
ON/TARE/OFF, HOLD, UNIT/LIGHT, COUNIT
Stabilisation Time
1-2 seconds
Operating Temp.
and humidity
5°C - 40°C
35%-90% RH
Transport and
storage
temperature and
humidity
-20°C +60°C
25%-95% RH
Power supply
Four 1.5V AA size alkaline batteries
ADAPTOR 12v 1A
Indicator display
1.0” LCD display with 5 active digits
Dimensions
Assembled size: 343×348×55mm
Platform size: 343×293×20mm

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PANEL
1. Capacity : 22kg PANEL
2. Capacity : 30kg PANEL
3. Capacity : 70kg PANEL
4. Capacity : 120kg PANEL

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LCD DISPLAY
1. : Stable symbol
2. : Minor weight value
3. : Zero
KEY FUNCTION DESCRIPTION:
1. ON/TARE/OFF:
To power ON and TARE the scale.
Press 3 Seconds to POWER OFF
2. HOLD:
Press to HOLD function
3. UNIT / :
Press to UNIT function.
Press 3 Seconds to Backlight on or Backlight off
4. COUNT :
Press to COUNT function.

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GENERAL WEIGHING OPERATION
1. Place the scale on a hard, level surface.
2. Press the “ON/OFF/TARE” button to turn the scale on. The
display first shows “88888”, followed by zero. If the display does
not show zero, press the “ON/OFF/TARE” button to reset (tare)
the scale to zero.
3. The scale is set at the factory to weigh in kilograms. While the
scale is on, press the “UNIT/ ” button to switch to ounces,
kilogram or pounds units of measurement. (Note: The scale will
retain the last unit used when it is turned off and on again.)
4. Place the item to be weighed onto the platform. The display will
count up to the weight of the item. As you add weight, the weight
displayed increases. The weight is locked in when the “O” icon
appears. When all the weight is removed, the display will return to
zero. (If the display does not show zero, press the
“ON/OFF/TARE” button.)
5. If the scale is operating on battery power, it will automatically turn
off after approximately 2 minutes of nonuse (if the auto off
function is engaged). Press and hold the “ON/OFF/TARE” button
to turn the scale off manually. If the scale is operating on adapter
power, it will remain on until the “ON/OFF/TARE” button is
manually pressed.

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INSTRUCTION OF TARE FUNCTION
You may wish to weigh ingredients in a bowl or other container (not
included). In this case, you will need to tare, or offset, the weight of
the bowl so that only the weight of the ingredients is displayed.
1. Choose a container that will safely balance on the platform
without tipping or falling. Do not use a heavy container, as this
might reduce the maximum capacity of the scale.
2. While the scale is off, place the empty container on the scale
platform. Turn the scale on. The display will show “88888” then
zero. The weight of the container has been zeroed out.
3. Add the ingredient to be weighed. The weight of the ingredient
alone will display.
4. The weight of additional ingredients may be tared out as well. For
example, to measure ½ lb rice and ½ lb beans together, place the
rice into the bowl. Once the correct amount of rice is weighed,
press the “ON/OFF/TARE” button until the display resets to zero.
Add ½ lb of beans. Both ingredients have been accurately
weighed in the same bowl.
5. When weights have been tared out, the display will show a
negative number when the items are removed from the scale. To
reset the scale back to zero for a new measurement, simply press
the “ON/OFF/TARE” button again. The scale will reset to zero.

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INSTRUCTION OF HOLD FUNCTION
When the “HOLD” function is turned on, the LCD screen will continue
to display the weight after the item is removed from the platform.
To turn on the Hold function:
1. While the scale is on, place the item to be weighed on the
platform.
2. Press the “HOLD” button. “HoLd” appears in place of the weight
and a “▲”symbol flashes. When the weight is locked in, the “▲”
symbol stops flashing and the weight reappears. The weight will
be “held” on the LCD screen when the item is removed.
3. To release the hold function, press the “HOLD” button. The Hold
function is automatically disabled when the scale turns off. Press
and hold the “ON/OFF/TARE” button to turn the scale off
manually.
Notes:
• Some functions, such as tare, will not operate when the scale is in
the “HOLD” mode.
• The “HOLD” function can only operate if the weight is stable on the
platform. If the weight is unstable, check to see that the scale
platform rests properly on the scale. If necessary, move the item
slightly on the platform until the weight locks in (the “o” icon will
appear).

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COUNTING FEATURE
The counting feature will calculate the number of like items based on
total weight. To use the counting feature:
1. Press the “ON/OFF/TARE” button to turn the scale on. If using a
container, press “ON/OFF/TARE” to tare (zero) out the weight of
the container.
2. Press the “COUNT” button once, then press and hold “COUNT”
for 3 seconds. “S=10” appears and flashes.
3. Place 10 sample pieces to be weighed on the platform. The
display will show “10” and the stable weight “o” icon when
weighing is complete. The weight of 10 pieces is stored in
memory.
4. Remove the 10 sample pieces from the platform.
5. Place another group of the sample pieces on the platform. The
scale will calculate the number of pieces in the group.
6. To weigh 20, 50 or 100 sample pieces: In Step 2, press the
“COUNT” button until the desired number appears. Repeat steps
with the correct number of sample pieces.
7. The scale will retain the last count sampling used when it is
turned off.
Note: if the count function fails, the scale will return to the weighing
mode instead of displaying the count. Repeat steps above.

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CALIBRATION FUNCTION
Occasionally the scale's accuracy should be verified by measuring a
known weight of the scale's approximate capacity. Tare the scale by
pressing “ON/OFF/TARE”, place the weight on the platform and note
the reading. Calibrate the scale if necessary.
CALIBRATION PROCEDURE
You must use a 20 lb calibrated weight ONLY to properly recalibrate
the scale.
1. While the scale is off, press and hold the “ON/OFF/TARE" button
and then press the "UNIT/ " button 3 times. Release all buttons. A
number and the “lb” icon will display. (Note: the scale must be set
to weigh in pounds to recalibrate. If necessary, press the “UNIT / ”
button until the “lb” icon appears.)
2. Press the “COUNT” button. The display will show “20”. (If the
scale does not show “20”, press “UNIT / ” until “20” appears.)
3. Place a 20 lb calibrated weight on the scale platform.
4. Press the “COUNT” button. A number and the “lb” icon will
display.
5. Press the “COUNT” button again. The display shows “CAL” then
“20.00” lb.
6. Remove the weight. Calibration is complete.
Note: If the calibration is unsuccessful, the display will show a
number instead of “20.00” lb. If this occurs, repeat the steps
above.

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INSTRUCTION AUTO SHUT-OFF FUNCTION
The scale will automatically shut off to conserve the batteries if
operating on battery power. The auto-shut off feature can be
disabled to allow the scale to operate continuously or set from 2
minutes to 5 minutes.
1. Press the “ON/OFF/TARE” button to turn the scale on.
2. Press and hold the “HOLD” button for 5 seconds. The display will
show “SEt”, then “P-1.21”, then “A.OFF”. Release the “HOLD”
button.
3. Press “COUNT”. The display shows the current auto-shut off time
(example: “120 S” for 120 second auto shut-off).
4. Press “UNIT / ” to cycle through the options: “120 S”, “180 S”,
“240 S”, “300 S”, or “OFF” (“OFF” indicates the scale will remain
on until “ON/OFF/TARE” is manually pressed).
5. Press “COUNT” to select the desired setting. The display shows
“A.OFF”.
6. Press “UNIT / ” until “End” displays, then press “COUNT”.
7. Set up is complete. The scale returns to weighing mode.
Note: If the scale is operating on adapter power, it will remain on until
the “ON/OFF” button is manually pressed.

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INSTRUCTION OF INTERNAL SETTING
Press HOLD
key 3 sec
Define
Select

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RS232 PIN OUT
Connecting with PC
1.Start Hyper Terminal
Start Hyper Terminal program from clicking
Start Menu → Programs → Accessories → Communication →
Hyper Terminal.
2.New Connection Description
Give new connection a name then click OK.
3.Select Your COM Port
Click Connect to select your COM port. Usually there’s only one
option for select. Then click OK.
4.Port Settings
Click Bits per second to set up rate at 9600, Data bits at 8, Parity at
None, Stop bits at 1 and Flow control at Hardware. Then click OK
to complete your setting.
5.Output Data
When press the PRINT key to output data from scale to PC

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ERROR MESSAGE
ERROR
MESSAGE
REASON
ACTION
Low battery:
This warning shows that
the voltage of batteries
is too low to use.
Please replace with new
batteries or plug the AC
adaptor for operation.
Overload:
The total load exceeds
the maximum capacity of
the scale.
Please reduce the loading
and try again.
Counting error (too
high):
Indicates that the signal
from the load cells is too
high.
This error is normally
caused by a serious fault
on the scales i.e. a faulty
load cell or wiring.
Please contact the local
Service Representative.
Counting error (too low):
Indicates that the signal
from the load cells is too
low.
This error is normally
caused by a serious fault
on the scales such as a
faulty load cell or wiring.
Please contact the local
Service Representative.

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