TScale M503 Series Manuale utente

Weighing Indicator

M503

Wheelchair Scale

M503 Series Wheelchair Scales Technical Manual

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CONTENTS

1. PRECAUTIONS……………………………………………………………..2

2. INTRODUCTION……………………………………………………………3

3. SPECIFICATIONS……………………………………………………….....4

3.1Specifications………………………………………………………………...4

3.2 Load Cell Specification...............................................................…...5

4. INSTALLATION……….…………………………………………………….6

5. DESCRIPTION……….....................................................................8

6. OPERATION………………………………………………………………..10

1. Power ON/OFF…………………………………………………………10

2. Zero……………………………………………………………………...10

3. Tare……………………………………………………………………...10

4. Hold function…………………………………………………………....10

5. BMI function…………………………………………………………….11

7. PARAMETER……………………………………………………………….12

8. CALIBRATION……………………………………………………………..14

9. BATTERY OPERATION…………………………………………………..15

10.MAINTENANCE……………………………………………………………16

10.1 General………………………………………………………………..16

10.2 Error codes……………………………………………………………17

10.3 Determine the Problem……………………………………………...17

10.4 Check the Load Cell…………………………………………………17

10.5 Check PCB Voltages………………………………………………...18

10.6 Trouble Shooting……………………………………………………..19

11.DISPOSAL……………………………………………………………………20

12.WARRANTY……………………………………………………………………21

M503 Series Wheelchair Scales Technical Manual

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1. PRECAUTIONS

WARNING

DISCONNECT ALL POWER TO THIS UNIT

BEFORE INSTALLING, CLEANING, OR

SERVICING. FAILURE TO DO SO COULD

RESULT IN BODILY HARM OR DAMAGE THE

UNIT.

CAUTION

Permit only qualified persons to service the instrument

Before connecting or disconnecting any components, remove the

power.

Failure to observe these precautions bodily harm or damage to or

destruction of the equipment.

Follow the instructions in the instructions for use.

Keep the operating instructions and the declaration of

conformity in a safe place.

Never leave the old man seat on the scale unsupervised.

Ensure that the scale is standing firmly on a smooth, level

surface.

Do not drop the scale or subject it to violent shocks.

When using the scale with a mains unit, ensure that the

supply cable is routed in such a way as to exclude any type

of tripping hazard.

Use only the type of battery stated.

Have scale serviced and re-calibrated on a regular basis.

Have repairs carried out only by authorized persons.

M503 Series Wheelchair Scales Technical Manual

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2. INTRODUCTION

The M503 series wheelchair scales, that amplifies signals from a load cell,

converts it to digital data and displays it as a mass value.

It is accurate, fast and versatile series of general purpose balances with %

weighing functions and accumulation.

All models with ECTAC(Class III) and conform 93/42/EC directive.

Materials used according to REACH directive.

Safe and comfortable wheelchair weighing scales

Users can choose to put the meter location by themselves

Ramp foldable, when folded out with low distance to the floor.

Optional RS-232 interface, can connect computer and printer.

M503 Series Wheelchair Scales Technical Manual

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3. SPECIFICATION

3.1 Specifications

Model

M503-300k

Maximum Capacity

300kg/660lb

Readability

0.1kg/0.2lb

Resolution

1/3,000

Tare range

-249.9kg

Minimum Capacity

2kg/4lb

Linearity ±

0.2kg/0.4lb

Common Specifications

Interface

RS-232 Output Optional

Stabilisation Time

2 Seconds typical

Operating Temperature

0°C - 40°C / 32°F - 104°F

Power supply (external)

12V/500mA AC power adapter or 2000mAh Ni-MH

batteries (optional, size AA)

Calibration

Automatic External

Calibration as per Directive

90/384/EEC

Class III medical approval

Medical product as per

Directive 93/42/EEC

Class I

ADC

Σ-Δ

Display

25 mm high 6 digits LCD with auto backlight and

loading bar graph

Housing

Aluminium platform, ABS plastic indicator

Gross weight

85kg

M503 Series Wheelchair Scales Technical Manual

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3.2 Load Cell Specifications

Model No

L6E3

Rated Capacity (kg)

2.5/3/5/6/8/10/15/20/30/35/40/50

Sensitivity

2.0±0.2 mv/v

Excitation Voltage

5~12V

Material

Aluminum

Cable

0.3~3m Φ 4mm

Input Resistance

409Ω ±6Ω/1065Ω ±15Ω

Out put Resistance

350Ω ±3Ω/1000Ω ±10Ω

Temperature Range

-35°C ~ +65°C

Safe overload

150%F.S

Ultimate overload

300%F.S

Error

±0.0233%F.S

Creep (20min)

±0.020%F.S

Zero Balance

0±5%mV/V

Max. Platform Size

250x350mm

M503 Series Wheelchair Scales Technical Manual

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4. INSTALLATION

Unpacking

Carefully take the balance out of its package, make it sure its not damaged and

all accessories are included.

Remove the weighing scale from the carton.

Remove the protective covering. Store the packaging and to use if you

need to transport the scale later.

Inspect the scale and terminal for damage.

Make sure all components are included

Accessories,

1. Balance

2. Adaptor

3. Product manual

Level Adjusting

Place the scale on a table.

Check the water mark. If, bubble is not centre

adjust the leveling feet until reach centre. Check

the level when you change the location.

Charging Battery

To charge the battery insert the adaptor pin to jack, jack is locating rear side

of the scale. Adaptor simply plug into the mains power. The scale no

needs to be turned on.

The battery should be charged for 12 hours for full capacity.

In the display there is an indicator show the status of battery charging.

When the scale is plugged into the mains power the internal battery will be

recharged. If the indicator off, the battery has a full charge. If it is on, the

battery is nearly discharged and if yellow, the battery is being charged.

Do not use any other type of power adaptor than the one supplied with the

scale.

Verify that the AC power socket outlet is properly protected.

Note: Please charge the battery before using the scale for the first time

M503 Series Wheelchair Scales Technical Manual

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Installation

Load cell Connecter

Adaptor Jack

Calibration switch

Place the scale on a table.

Connect the adaptor pin in to the scale adaptor jack. Adaptor jack is

locating, rear side of the scale.

Adaptor connects into your AC power socket.

Pluggable equipment must be installed near

an easily accessible socket outlet with a

protective ground/ earth contact.

Display will be show the version number and will

be starting self checking.

After self checking, display will be come to normal weighing mode.

Warm-up time of 15 minutes stabilizes the measured values after

switching on.

Calibrate with exact calibration weights, minimum 1/3 of the scale capacity

want to use for calibration. For calibration see details in parameter.

Then you can start your operation

M503 Series Wheelchair Scales Technical Manual

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5. DESCRIPTION

Key Board

Turns the scale power On / Off

Set to hold mode

Set to BMI mode

Enter into the menu

Sets display to Zero

Subtracts weight of container

Change unit: kg / lb

M503 Series Wheelchair Scales Technical Manual

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Display

DISPLAY

FUNCTION

STABLE

Indicator for Display stability

ZERO

Indicator for Zero display

TARE

Indicator for Tare display

NET

Indicator for Net weight

GROSS

Indicator for Gross weight

Cm/inch

Indicator for measuring units

Lb/kg

Indicator for weight units

Indicator for Charging status of battery

Voltage has dropped

Low Voltage

Fully Charged

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