Charder MS3451 User Manual

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Manufactured by:

Charder Electronic Co., Ltd.
No.103, Guozhong Rd., Dali Dist.,
Taichung City, 412 Taiwan (R.O.C.)

IN-00117 [REV001] 05/2018

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MS3451

Medical Scale

USER MANUAL

Please keep the instruction manual at hand all the time for future reference.

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TABLE OF CONTENTS

PREFACE.....................................................................................................2

GENERAL INFORMATION....................................................................... 2

SAFETY INSTRUCTION ........................................................................... 2

ELECTROMAGNETIC COMPATIBILITY................................................ 3

WARRANTY-LIABILITY........................................................................... 3

DISPOSING OF THE SCALE..................................................................... 4

SPECIFICATIONS.......................................................................................5

PANEL.......................................................................................................... 6

KEY FUNCTIONS.......................................................................................6

LCD DISPLAY SYMBOLS.........................................................................7

SYMBOLS information ............................................................................... 8

OPERATION................................................................................................ 8

SETTING-UP............................................................................................. 13

PRINT function and data transmission.......................................................14

STANDARD ACCESSORIES...................................................................18

SCALE ASSEMBLY.................................................................................. 19

ASSEMBLE WITH HM201M HEIGHT ROD..........................................22

INSTRUCTION OF USING HM201M..................................................... 23

INSTRUCTION FOR CHARGING AND USB CONNECTING............. 25

INSTRUCTION FOR REPLACNG BATTERIES ....................................26

ERROR MESSAGE................................................................................... 27

TROUBLESHOOTING.............................................................................28

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NOTE

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3. Connection failure for data transmission to PC or printer

 Wrong connection wires or faulty wires for transmission

between the digital indicator & load cells.

 Wrong indicator models
 Wrong internal wiring or wire broken

In case of the following defective mode occurs, it is suggested
to contact your nearest Authorized Dealer for further technician
service & repair:

1. Power Switch-on failure :

 Push-button faulty
 Short circuit wires - Wire broken
 Safety fuse burnt out
 Wire connection problem
 Main power adaptor faulty – Parts Replacement

2. LCD display faulty

 Possible hardware defects include: Uneven brightness in the

LCD display screen & texts color blurred, smeared rainbow
screen, incorrect decimal display

 LCD PIN broken or short circuit
 PCB cooper foil broken & loosed welding
 Unable to save or read data – IC or transistor faulty, internal

parts broken.

 LCD showing “ERRL” after switch on - Load cell damaged
 Overload may cause the weigh to malfunction.
 Software system crash
 Resonator faulty
 Load cells with faulty grinding standard.
 Key buttons failure - Front key panel damaged or

disconnected

3. Buzzer malfunction

 Wrong welding of PVC wire
 Key buttons & control panel damaged or disconnected.

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PREFACE

Thank you for choosing CHARDER MEDICAL product. All features of this
product were designed to state of the art and are optimized for simple and
straightforward use. If you have any queries or experience any problems
not addressed in the operating instructions, please contact your CHARDER
MEDICAL service partner, or visit us on the Internet at

www.chardermedical.com

GENERAL INFORMATION

We strongly recommend you use the scales on flat and hard surface. Any
soft surface, like carpet will cause inaccuracy.

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
 These batteries should be kept away from small children. If

swallowed, promptly seek medical assistance.

 Expected Service Life: 5 years
 The device meets the requirements for electromagnetic

compatibility. Do not exceed the maximum values specified in

the applicable standards.
If you have any problem, contact your local CHARDER MEDICAL
service partner.

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ELECTROMAGNETIC COMPATIBILITY

ADVICE TO THE USER

This product is a sensitive electronic instrument and as such it may
temporarily be affected by Radio Transmitting Devices being used in close
proximity to it (such as Mobile Phones, Walkie Talkies, CB Radios, and
Radio Model Controllers). If it does exhibit symptoms such as the display
of erratic or erroneous data, try moving this product away from the source
of interference or switching off that source of interference whilst you are
using this product. If the problem persists then contact your local agent.

WARRANTY-LIABILITY

 If a fault or defect is present on receipt of the unit which is within
CHARDER MEDICAL’s scope of responsibility, CHARDER shall
have the right to either repair the fault or supply a replacement unit.
Replaced parts shall be the property of CHARDER. Should the fault
repairs or replacement delivery not be successful, the statutory
provisions shall be valid. The period of warranty shall be two years,
beginning on the date of purchase. Please retain your receipt as
proof of purchase. Should your scale require servicing, please
contact your dealer or CHARDER MEDICAL Customer Service.
 No responsibility shall be accepted for damage caused through
any of the following reasons: Unsuitable or improper storage or use,
incorrect installation or commissioning by the owner or third parties,
natural wear, changes or modifications, incorrect or negligent
handling, overuse, chemical, electrochemical or electrical
interference or humidity, unless this is attributable to negligence on
the part of CHARDER MEDICAL.
 If operating, climatic or any other influences lead to a major
change in conditions or material quality, the treaty for perfect unit
functioning shall be rendered null and void. If CHARDER provides

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TROUBLESHOOTING

Troubleshooting for defective modes:

Original purchaser can enjoy the benefits under the effective
Warranty against functional defects in material and workmanship
subject to the terms and conditions listed in our Warranty Program &
Return Policy.
Our warranty service program includes the following:

1. Technician repair service under warranty or at a service
maintenance charge depending on the workmanship for the
defective functionality or cause of damage covered by the warranty.

2. Parts replacement from the manufacturing factory under the
warranty or at a certain cost for the replaced parts plus the
workmanship charge if not covered under the warranty.
Before you contact our Authorized Dealer in your country for
technician repair service, please read through the following section
carefully:

Self-checking Tips:

Some functional defects can be identified and maintained by users
as listed below:

1. Power-on failure

 Check if the main power adaptor has not plugged onto the

scale properly

 Check if the battery power is running low – Replace with

new batteries.

2.

Indicator showing “0000” ZERO SPAN out of range

 Incorrect weighing result - Avoid damages by external

environment force such as free-drop to the ground, collision
by external objects, etc.

 Proper re-calibration procedure required to correct the setting

of weighing accuracy.

 Interference due to RF disturbance, ground vibration…etc.
 Unstable platform feet adjustments according to bubble level

indication

 Incorrect position or other external objects within weighing

area

 The weighing-scale is not put in a solid & firm ground area,

such as carpet floor or lawn.

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ERROR MESSAGE

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and individual warranty, this means that the unit supplied will be free
of faults for the length of the warranty period.

DISPOSING OF THE SCALE

 This product is not to be treated as regular household waste, but
should be handed into 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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SPECIFICATIONS

Model MS 3451

Capacity 300 kg x 0.1 kg

Accuracy ±200g

Weight Unit Kg/lb

LCD Display 1.4” LCD digital display

Dimension

Platform size: 310 x 310 mm

Column Height: 900mm

Key Functions

UNIT, TRANSFER, ON/OFF/ZERO,

HOLD/BMI, TARE/BSA

Optional Accessories HM201M height rod 60 ~ 210 cm / 6ft 10inch

Operating Temp. &
Humidity

+ 5°C ~ + 35°C

15% - 85% RH

Transport and Storage

Temperature &
Humidity

- 20°C + 60°C

10% - 95% RH

Power Supply

12V adapter

1.5V AA battery * 6

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INSTRUCTION FOR REPLACNG BATTERIES

1. Open the battery housing cover

2. Take out the battery housing

3. Place the batteries

4. Make sure that the battery housing
pins will touch the right points

5. Re-install the battery housing

6. Close the battery housing cover.

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INSTRUCTION FOR CHARGING AND USB
CONNECTING

If

prompt displays on the LCD, please charge the
scale with MS4971 exclusive adaptor or replace the batteries.
Locate adaptor plug-in at the left side of indicator.

USB socket above USB symbol, and you can connect USB cable
to transfer data.

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PANEL

KEY FUNCTIONS
Description:

TARE

Tare the weight of excess object in advance so that the user
can measure the net weight of the object / person at ease
without removing the tare object again.

BSA

The total surface area of human body. For many clinical
purpose,BSA is the better indicator of metabolic mass than
body weight,because it is less affected by abnormal adipose
mass. BSA is commonly used in medicine, particularly to
calculate doses of chemotherapeutic agents and index cardiac
output.

ON/ZERO/OFF

Key to power scales ON, OFF and ZERO.

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UNIT

Key to switch kg or lb, and to change height value under BMI
mode.

HOLD/BMI

HOLD key and BMI (Body Mass Index) key

LCD DISPLAY SYMBOLS

BSA : Body surface area is activated
BMI : Body Mass Index is activated
NET : Net weight appears after press tare button
HOLD : Weight lock function is activated

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MEASURING UNDER 121 cm

1. Fold the plate and press
the buckle.

2. Pull down head piece
while buckle is pressed

B

3. Height reading can be
taken at B point.

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INSTRUCTION OF USING HM201M

1. Pull out the rod.

MEASURING OVER 121 cm

2. Position the head piece
to horizontal position

A

3. Height reading can be
taken at A point.

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SYMBOLS information

OPERATION

1 Switching on/off

Switching on

Press to switch scale on
For a few seconds the devices shows a start-up screen with
the full segmental LCD display, software version and then

0.0 kg

Switching off

Press and hold for 3 seconds to switch scale off

Zero the scale

Press while scale is on to zeroing the scale

2 Straight weighing

1. Place weighing object/person on the scale

Symbol Information Remark

Stability sign

Mark appears when weight is stable

Negative sign

When weight value is negative

Zero indication

When scale is set to zero

Battery symbol

Indicate 5 level of battery power.

Stab

ility sign

Negative sign

Zero indication

Battery symbol

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2. Wait until the stability sign appears

3. Read the weighing result

3 Weighing with hold

This device is provided with the integrated hold function
(determination of average value). It enables people to be weighed
accurately although they are not still on the scale plate. Once the
HOLD key is pressed, the weight reading will remain on the display
after the item has been removed from the scale so the reading can
easily be read.

Note

 Determination of average value is not possible when a person

moves too much.

 HOLD function won’t work if the weight is under 2 kg.

1. Switch on the scale. The diagnostic self-checks is performed.
The scale is ready for weighing when the „0.0 kg” displays
on the screen.

2. Place object/person on the scale.

3. Press key. When the triangle is flashing on the
display, the scale records the fluctuating weight values and
then calculates average weight and displays the result on
the screen.

4. Remove object/person from the scale. The weight reading
will remain on the display.

5. Press key again to return the scale to the normal
weighing mode.

6. HOLD function can be activated before or after place the
weight on the SCALE.

4 Weighing with tare

Tare function allows the user to deduct the excess weight of a single tare
object value (additional loads or clothes) from the display reading, thus
calculate the actual net weight of the object/ person.

4.1.1 Taring
Place tare object (additional loads or clothes) on scale
and press to tare the weight of object.

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ASSEMBLE WITH HM201M HEIGHT ROD

2. Fix HM201M on the
brackets.

1. Fix the brackets.

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5. Complete

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 The zero display and the symbol NET appear.
 The tare weight remains stored until it is cleared.

4.1.2 Clear the tare
Press to clear tare weight

 The symbol NET disappear
 The gross weight appears in the display.

5 Weighing with BMI

For BMI calculation, height is needed, therefore it is recommended to
measure the height of subject before starting weighing procedure.

1. Switch on the scale.

2. Place object/person on the scale.

3. Press key and hold for 3 seconds. First, display will
show “HOLD” and lock weight then display show “height
value”.

4. Adjust height value by using (↓) and (↑) keys.

5. Switch between digits by using (→) key.

6. Press to confirm height value.

7. Display will show “HOLD” and lock weight to calculate BMI.

Body Mass Index Categories

Classification of weight for adults over 18 years on the basis of Body Mass Index
according to WHO, 2000 EK IV and WHO 2004 (WHO - World Health
Organization).

BMI

Height

weight

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6 Weighing with BSA

- Values for Body surface area (BSA) is the measured or calculated surface
area of a human body. For many clinical purposes BSA is a better indicator of
metabolic mass than body weight because it is less affected by abnormal
adipose mass. BSA are commonly used in medicine, particularly to calculate
doses of chemotherapeutic agents and index cardiac output.

Average BSA for children of various ages, for men, and for women, are taken to
be:

Age BSA

Neonate (newborn) 0.25 m²

Child of 2 years 0.5 m²

9 years 1.07 m²

10 years 1.14 m²

12-13 years 1.33 m²
Women 1.6 m²
Men 1.9 m²

There was an average BSA of 1.73 m² for 3,000 cancer patients from 1990 to 1998 in a European
Organisation for Research and Treatment of Cancer (EORTC) database.
During 2005 there was an average BSA of 1.79 m² for 3,613 adult cancer patients in the UK. Among
them the average BSA for men was 1.91 m² and for women was 1.71 m².
However, there is some evidence that BSA values are less accurate at extremes of height and weight,
where Body Mass Index may be a better estimate.

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3. Arrange the cable along the gap in the column seat.

4. Cover the bottom cover and screw in four M4*0.7*8 screws

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SCALE ASSEMBLY

1. Plug the column into the column seat.

2. Screw in three M4*0.7*15 screws.

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6.1.1 Enable BSA in BMI mode

1. Starting with BMI process

2. When BMI, weight and height is playing rotationally.

3. Press to play BSA value.

4. Press to return to BMI mode.

5. Press to return to normal mode.

BMI

Height

weight

Height

weight

BSA

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SETTING-UP

1. Switch on the scale.

2. Press key and hold for 6 seconds to enable setting mode.

3. LCD shows “SETUP” first and then “A.OFF” appears.
Switch between modes and menu

Reverse switch between modes and menu
Confirm setting.
MENU

AUTO-OFF TIME SETUP
This enables operator to select the auto turn OFF time of the device.
BUZZER ON/OFF SETUP

Set auto-off timer between 120/180/240/300/off
Set buzzer on and off
Set HOLD function release after unload weight ON and
OFF.

Note
Confirm in the menu to save all settings.

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STANDARD ACCESSORIES

No. Accessories Item Spec Qty

1

M4 Screw M4*0.7*15 3

2

M4 Screw M4*0.7*8 4

3

Bottom
Cover

1

4

USB cable

1

5

12V

adaptor

AC adapter

1

6

User

manual

IN-00117 1

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8. Printout Data through USB cable connector
Click OK button to complete the setting. The PC will retrieve the
weighing & BMI data from the CHARDER scale and display on
the HyperTerminal program similar to the layout below.
While the Hyper Terminal program is running, type “P” KEY on
the PC keyboard to transmit a print command to printout from the
thermal printer on the CHARDER scale for hard copy of weighing
data & BMI.
Or, press the [PRINT] button on the display panel of the
CHARDER scale, the printout presented below is the standard
format print layout as well as shown on the HyperTerminal
computer screen.

GROSS WEIGHT 70.00kg
TARE WEIGHT 0.00kg
NET WEIGHT 0.00kg
USER HEIGHT 170.0cm
USER B.M.I. 24.2

01/01/2013 10:00

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PRINT function and data transmission

The Weighing, BMI and Height results can be keep in PC for records using USB
interface cable, which is connected to the USB plug at the back terminal.
After complete BMI and BSA process, simply press key to transfer the
results to PC.

HOW TO SETUP USB CONNECTIONS ON PC

1. Make sure the PC hardware device has USB port version2.0 or
above compatibility. Users may need to consult with local
computer accessories dealer to select the proper USB cable
length that is most suitable to work environment for best
performance, then connect the cable first between the PC and
CHARDER Scale model.

2. Run HyperTerminal program under Windows OS computer and
input printer port parameter settings, please refer to the next
Section in <Step 7> on how to setup HyperTerminal program in
user’s computer for printer port parameters.

3. Once the HyperTerminal setting is ready, make sure the USB
cable is connected properly between the user PC’s USB port and
the CHARDER Scale Model again. Press PRINT button on the
Scale Display Panel for printout of weight & BMI data from thermal
printer.

Hyper Terminal setting in PC for printout
Hyper Terminal is a freeware on PC Windows XP SP3 or lower to

setup the PC printer com-port with USB cable connector
transmission.
For use on Windows Vista or higher please download hyper terminal
software program from Charder website:
http://www.chardermedical.com/download/dlist-4.htm

4. Start Hyper Terminal

After taking the weight and BMI, run Hyper Terminal program from
the PC’s Windows OS with the following steps:
Step.1- Click on Start Button.

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Step.2- Go to All Programs.
Step.3- Select Accessories.
Step.4- Find Communications.
Step.5- In Communications section click on HyperTerminal.

5. New Connection Description
Name the connection and click OK Button

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6. Select COM Port on User PC

Click Connect to select COM port on the computer. Then click OK.

7. Port Settings for Printout

Set up as below:

 Baud rate: 9600 bps
 Parity check: None
 Data length: 8 bits
 Stop bit: 1 bit
 Handshake: RTS/CTS
 Data code: ASCII

USB Driver Install
The scale confirms to the USB PL2303
Make sure the computer software has a USB scale interface.

PL2303 driver download:

http://www.prolific.com.tw/US/ShowProduct.aspx?pcid=41&showlevel=001
7-0037-0041