Adam Equipment MDW - 250L User manual

© Adam Equipment Company 2009
Adam Equipment
MDW – 250L
DIGITAL PHYSICIAN SCALE
Software EMW-250L-20080601
ADAM EQUIPMENT CO. LTD.
p.n. 4302, Rev. C4, November 2009

© Adam Equipment Company 2009 Page 1 Rev C3, June 2008

© Adam Equipment Company 2009 Page 2 Rev C3, June 2008
CONTENTS
1.0 INTRODUCTION ..........................................................................................4
2.0 TECHNICAL SPECIFICATIONS...................................................................4
3.0 DISPLAY AND KEY DESCRIPTIONS ..........................................................5
4.0 SETTING UP THE SCALE............................................................................6
5.0 FUNCTION ...................................................................................................5
5.1 WEIGHING................................................................................................5
5.2 MEASURING HEIGHT..............................................................................6
6.0 CALIBRATION ..............................................................................................6
7.0 USER PARAMETERS ..................................................................................8
8.0 RS232 COMMUNICATIONS.........................................................................9
9.0 ERROR MESSAGES..................................................................................13
10.0 WARNING...................................................................................................13

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© Adam Equipment Company 2009 Page 4 Rev C3, June 2008
1.0 INTRODUCTION
•The MDW 250L scale is a Digital Physician Scale.
•It is an accurate electronic device with advanced design and stable
performance.
•It is designed to measure both the weight and the height of a person.
2.0 TECHNICAL SPECIFICATIONS
Maximum capacity 250 kg / 550lb
Minimum capacity 2 kg / 4lb
Scale division 0.1Kg / 0.2lb
Height range 80 cm-210 cm
Division of measurement 0.5 cm
Display LED display
Size of platform 375 X 275 mm
Overall dimension 535 X 275 X 1040 mm
Deadweight 13 kg
Environment for Use Temperature: 5ºC-40ºC;
Humidity: <85℅RH
Power 12vAC 500mA adapter
Battery Internal, re-chargeable
6V 4Ah, 5 hours approx.
Calibration External calibration through the keypad.
Communications Bi-directional RS232

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3.0 DISPLAY AND KEY DESCRIPTIONS
KEYS FUNCTIONS
[On / Off
/Zero]
To turn the scale on or off.
To zero the scale if the display drifts from zero.
[Tare] To tare the scale, if necessary.
[Units] To toggle the weighing unit between Kg and Lb.
[Print /
Hold]
To lock the reading even if the person to be weighed is moving and
also to print the weight details out.
DISPLAY DESCRIPTIONS
Kg Indicates when the scale is weighing in Kilograms.
Lb Indicates when the scale is weighing in Pounds.
Hold Indicates when the scale has held the weight reading shown on the
display. It will flash until it locks into the stable reading when it will
then remain on constantly when it has held the displayed reading.
When the battery is low, this symbol will be light up. Connect the
adapter to recharge the battery.
CH The charge light will be on when the battery is recharging.
AC This indicates when the scale is being used with the AC adapter.
ZERO This indicator will be displayed in the left corner when the scale
reaches zero.
NET The Net weight is displayed, Tare weight is at zero.

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4.0 SETTING UP THE SCALE
•Take the Physician scale out of the box.
•Unwind the load cell cable (number 2 on the diagram).
•Run the cable up through the pillar from the base of the scale.
•Use the 4 screws (number 3 on the diagram) to mount the pillar to the
indicator.
•Connector the plug and socket (number 6 and 7 on the diagram) and
insert the pole into the pole holder.
•Secure the pole to the pole holder by inserting the 2 screws (number 9
on the diagram).
•Secure the height rod into the height rod holder (number 4 and 8 on the
diagram).
8
height rod
holder
4
height rod
2
cable to
indicator
1
indicator
10
platform
5
pole
9
screw
3
screw
7
socket
6
plug

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5.0 FUNCTION
5.1 WEIGHING
•Place the Physician Scale on an even floor and press the [On/Off] key.
•The instrument performs a self-test after which it is ready for operation.
•Press the [On/Off] key and the machine switches off.
•The person to be weighed can step on to the platform once the scale
shows 0.0 on the display. The weight will be display in Kg. or lb.
depending on the units chosen by the user.
•If the weighing value is to be tared press the tare key to remove the
weight value from the display.
•Press the [Units] key for changing the weighing unit to kg or lb. The
LED will indicate the chosen weighing unit.
•Overload display: When “ FULL ” appears on the display, it shows that
the load on the platform is over the maximum capacity. Under these
circumstances, it is necessary to reduce the load otherwise the sensor
or the platform will be damaged.
•Hold Function: To lock the weighing result, press the [Print/Hold]
key. The LED will flash until a stable reading has been obtained and
then it will light up constantly. To release the function, press the
[Print/Hold] key again.
•Print Function: To send the weighing result to a printer or computer
press the [Print/Hold] key when the [Print/Hold] key has been set up
in the parameter section to work as print function.
(Print function is only applied for scale with RS232 interface)

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5.2 MEASURING HEIGHT
•While measuring the height, it is necessary to pull up the measuring
board at a right angle with the inside tube.
•When the tube is pulled out straight, it is sufficient to measure the
height form 80-136cm. The number can be obtained upon the conjoint
place where the upper part of middle tube screw meets with the inside
tube scale.
•Further, if the middle tube is pulled out straight, it is possible to
measure the height from 136-210cm. The reading can be obtained at
the conjoint place where the upper part of outside tube screw meets
with the middle tube scale.
6.0 CALIBRATION
Before calibrating the scale, you should ensure that you have a known weight for
calibration.
1. When in normal weighing mode with the scale at zero press and hold down
[TARE] and [ON / OFF] keys to enter the calibration mode.
2. If the calibration switch is in the off position on the main PCB inside the scale, the
indicator will show ‘CAL.OFF” and then exit this mode. If the indicator shows”
CAL-?”, the scale is ready for calibration, showing the calibration switch is in the
on position. If the calibration switch is in the Off position open up the indicator
and move the switch to the On position. See diagram on page 8.
3. When the indicator shows ” CAL-?”, press the [TARE] key to confirm and go to
next step, or press the [ON / OFF] key to exit the calibration mode.
4. When ‘0.0’ is displayed the scale will begin to calibrate the scale’s zero-point.
Ensure that there is no load or weight on the scale’s platform . Press the [TARE]
key to confirm, or press the [ON / OFF] key to exit this mode.
5. A few seconds after the [TARE] key has been pressed in step 4 the scale will

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show ‘250.0kg’ or ’500.0lb’ depending on which unit you chosen, this is the
default calibration weight from the factory. Press the [UNIT] key to select the
calibration weight unit that you want to calibrate in. Press the [ON / OFF] key to
exit the calibration mode at this point or press the [Print/Hold] key to choose a
different calibration weight value (50kg, 100kg, 150kg, 200kg, 250kg or 100lb,
200lb, 300lb, 400lb, 500lb); Then put on the weight that you selected and press
the [TARE] key to confirm the chosen standard weight that was selected earlier.
The displayed data will flash on the display and if the scale accepts the
calibration data it will calculate and store the information into the EEPROM. If an
error has occurred, the scale will display “CAL. Er” and return back to step 4 for
re-calibration. If the loaded weight is not within the range of 95% to 105% of the
weight value you selected, the scale will not calibrate but display “CAL. Er” and
return back to step 4 for re-calibration. )
6. Check the calibration by putting the weight that you calibrated at back on the
scale, if it is off repeat the calibration process again.