marsden B-450 User manual

Version 1.1 09/20
B-450
USER MANUAL
Please take time to read these
instructions before starting
to use the scale

Contents
Product Specification 3
Safety Instructions 4
Package Contents 5
Keypad & Display 5
Battery Installation 6
Operation 7
Error Messages 9
Page 2

Product Specification
Model
B-450
Capacity/Division
3000g x 0.1g / 6.6lb x 0.0002lb
5000g x 1g /10lb x 0.002lb
Weight of Scale
2.6kg
Units of Measure
g, lb
Dimensions
Platter: 120mm x 150mm
Overall size: 170mm x 150mm x 46.5mm
Function Keys
ON/OFF, TARE/ZERO, UNIT
Display
20mm LCD digital display
Power Supply
9V alkaline battery
Operating Temperature
5 to 35˚C
Warranty
1 year
Please note: Marsden’s policy is one of continuous development and therefore we reserve the right to change product
specification without notice.
Disposal
In conformance with the European Directive 2012/19/EU on Waste Electrical and Electronic
Equipment (WEEE), this device may not be disposed of with domestic waste. This also applies to
countries outside the EU, according to their specific requirements.
Please dispose of this product in accordance with local regulations at the collecting point
specified for electrical and electronic equipment. For more detailed information about recycling
this product, please contact the local distributor from which you purchased this device.
Page 3
Latest product information
All the latest product developments, product sheets and more can be
found on our website. Scan this QR code using your device to be taken
straight to the B-450 page online.

Safety Instructions
Before putting this scale into use, please read with care the information given in this user
manual, which contains important instructions for proper installation, use and maintenance
of the device.
Marsden/the manufacturer shall not be liable for damages arising from failure to heed the
following instructions:
•When using electrical components under increased safety requirements, always
comply with appropriate regulations.
•Inappropriate installation/use will render the warranty null and void.
•Observe the permissible ambient temperatures for use.
•The device meets the requirements for electromagnetic capability. Do not exceed
the maximum values specified in the applicable standards.
•Do not allow liquids or foreign objects to enter the inner workings of the scale.
•Do not drop loads on the scale or leave heavy loads on the scale for extended
periods of time. This may damage the loadcells.
•Do not place the scale upside down on the pan.
•Do not open the scale. Never attempt to make repairs yourself. Any attempts to
open or repair the scale by anyone other than authorised personnel will render the
warranty null and void.
If you have any problems, contact Marsden/your local dealer/your service partner.
Cleaning
•Please do not use solvents to clean the scale.
•Clean with a damp, lint free cloth and mild soap or detergent.
•Always disconnect the scale 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. If any inaccuracies occur, please
contact your local dealer or service partner.
Page 4

Package Contents
B-450 scale
User manual
Keypad & Display
ON/OFF
Turn the scale on or off.
Tare/Zero
Remove unwanted weight from the display prior to weighing
Unit
Toggle between kg and lb readings
Page 5
Weighing units
LCD displays measured weight, units
and status information
Minor weight value
Low battery
Stable
Sign

Battery Installation
Note: Always ensure the battery cover is fully closed before use.
Page 6
Remove the battery housing cover.
Install a 9V alkaline battery.
Replace the battery cover.

Operation
Turning Scale On/Off
To turn the scale on, press the ON/OFF button. Scale will display and will then
enter active weighing mode.
To turn the scale off, press the ON/OFF button.
Zero Operation & Setting
With the scale switched on and nothing on the scale, the display should show zero.
If there is nothing on the pan and the display is not zero, press the TARE/ZERO button to
set zero.
Weighing
To weigh an item, place it in the middle of the platter. When the reading has stabilised, the
stable sign will show (see page 5).
If an item is heavier than the scale capacity, the display will show ‘Err’.
Using the Tare function
Tare allows the user to zero the weight of a container from the reading shown on the
display of the scale, thus giving the true weight of the product being weighed.
Turn on the scale by pressing the ON/OFF button.
When is displayed on the screen, place the empty container on the platter.
Press the TARE/ZERO button after the weight stabilises and the stable sign appears on the
display.
The display will return to .
Place the item that needs to be weighed (without removing the tare object) on the scale.
The display will show the Net weight of the item.
To remove the saved tare value, remove the container from the platter and press the
TARE/ZERO button.
Changing Units
The UNIT button allows you to switch from weighing in one unit to another. Simply press
the UNIT button before or during weighing.
Page 7

Setting the Auto-off Time
The B-450 has an auto-off time option, which means the scale will switch off automatically
after a period of inactivity. The time duration of the auto-off can be selected in the
following way:
Turn on the scale using the ON/OFF button.
Press and hold TARE/ZERO for 3 seconds after the countdown stops and LCD displays
zero.
First ‘SET’ and then ‘UNIT’ will display.
Press UNIT once.
‘A_OFF’ will display on the screen.
Press TARE/ZERO, and the default auto-off time will display on the screen.
Press UNIT to select the Auto-off time.
Auto-off time can be set to 120/180/240/300 seconds.
To turn off the auto-off option, press TARE/ZERO again. For example, If you want to select
240 seconds, press TARE/ZERO when ‘240 S’ displays on the screen. Press UNIT twice. The
display will show ‘End’. Press TARE/ZERO to confirm.
Page 8

Error Messages
ERROR MESSAGE
DESCRIPTION
REMEDY
Low battery indication
Replace the battery.
Total load exceeds the capacity
of the scale
Reduce the weight on the
scale and try again.
Counting error. The signal
from the loadcell is too low
Please contact Marsden or
your supplier.
Software fault
Please contact Marsden or
your supplier.
Page 9

Tel: [phone]
E-mail: [e-mail]
Manufacturing and Distribution:
Unit 7, Centurion Business Park,
Coggin Mill Way,
Rotherham,
S60 1FB
Head Office:
Unit 1, Genesis Business Park,
Sheffield Road,
Rotherham
S60 1DX
www.marsden-weighing.co.uk