CAS MWP Manuale utente

HIGH PRECISION BALANCE

MWP

OWNER’S MANUAL

MWP-2004-12 ver.1.0

INTRODUCTION------------------------------------------------1

1. INSTALLATION---------------------------------------------------2

Unpacking---------------------------------------------------------------2

Illustration of the installation for plastic shield-------------------2

Selecting the Location-----------------------------------------------3

Leveling the scale-----------------------------------------------------3

Connecting Power-----------------------------------------------------3

AC power------------------------------------------------------3

Battery power-------------------------------------------------4

2.6 Initial Calibration------------------------------------------------------4

2. OVERVIEW OF DISPLAY INDICATORS AND KEYBOARD

FUNCTIONS-------------------------------------5

Display Symbols-------------------------------------------------------5

Keyboard Functions---------------------------------------------------6

3. OPERATIONS-----------------------------------------------------7

Weighing mode---------------------------------------------------------7

4.1.1 Units Selection--------------------------------------------------7

4.1.2 Zero Function---------------------------------------------------7

4.1.3 Tare Function---------------------------------------------------7

4.1.4 Over load alarm------------------------------------------------8

4.2 Counting mode--------------------------------------------------------8

4.3 Percentage (%) mode------------------------------------------------9

4. PARAMETER SET-UP------------------------------------------10

Calibration---------------------------------------------------------------11

To choose the initial unit while turning on------------------------12

To choose the “UNIT” you need------------------------------------13

To choose the time of AUTO OFF----------------------------------14

To choose output transmission method---------------------------15

Baud rate setting for RS232 interface-----------------------------16

To choose the range of stability-------------------------------------17

To choose the Zero display range----------------------------------18

To choose the Zero Recovery display range -------------------19

To choose the auto-average in sampling on counting mode-20

To choose Backlight mode-----------------------------------------21

5. AUTO CALIBERATION-----------------------------------------22

6. RECOVERY OF THE DEFAULT VALUES FROM MEMORY----22

7. ERROR MESSAGES-------------------------------------------22

8. SPECIFICATION OF RS-232 INTERFACE--------------23

9. CONVERSION UNITS TABLE FOR WEIGHTS---------25

10. TABLE LIST FOR FULL CAPACITY------------------------25

12.TECHNICAL DATA------------------------------------------26

1. INTRODUCTION

The scale is very simple to use and are applicable for general weighing.The

user can also use the parts counting and percent weighing functions for

special applications. Special functions are available for weighing in up to 8

different units of weight.

For safe and dependable operation of this scale, please comply with the

following safety precautions:

● Verify that the input voltage printed on the AC Adapter and the plug type

matches the local AC power supply.

● Make sure that the power cord does not pose a potential obstacle or

tripping hazard.

● Disconnect the scale from the power supply when cleaning the scale.

● Do not operate the scale in hazardous or unstable environments.

● Do not immerse the scale in water or other liquids.

● Do not drop loads on the platform.

● Use only approved accessories and peripherals, as available.

● Operate the scale only under ambient conditions specified in these

instructions.

● Service should be performed by authorized personnel only.

● It must not be bump against other items or overloaded with excessively

heavy weights (The load must not exceed the maximum capacity of the

balance).

2. INSTALLATION

2.1 Unpacking

Unpack and verify that the following components have been included:

● Scale

● Steel pan

● Instruction Manual

● AC Adapter

● CD-ROM (for the scale with USB interface only)

● USB Cable (for the scale with USB interface only)

● Five pieces of wind shield

Save the packaging material. This packaging ensures the best possible

protection for the storage or transport of the product.

2.2 ILLUSTRATION OF THE INSTALLATION FOR

PLASTIC SHIELD

2.3 Selecting the Location

Operate the scale on a firm, level surface. Avoid locations with rapid

temperature changes, excessive dust, moisture, air currents, vibrations,

electromagnetic fields, heat or direct sunlight.

2.4 Leveling the scale

Adjust the leveling feet until the bubble is centered in the circle of the

level indicator(located on the front panel).

NOTE: Ensure that the scale is level each time its location is changed.

2.5 Connecting Power

2.5.1 AC Power

Verify that the intended AC power source matches the AC adapter rating.

Connect the supplied AC adapter to the power input receptacle at the

back of the scale. Plug the AC adapter into a properly grounded power

outlet.

2.5.2 Battery Power

The battery will begin charging with the AC adapter connected

accordingly. An LED indicator below and to the left of the scale shows the

status of battery charging:

● Green-battery is fully charged

● Yellow-battery is partially charged and charging

● Red -battery is nearly discharged

When AC power is not available, the scale will operate on the internal

rechargeable battery. The scale will automatically switch to battery

operation if there is a power failure or the power cord is removed. Low

battery charge is indicated by the annunciator.

Before using the scale for the first time, the internal rechargeable battery

should be fully charged for up to 12 hours. A fully charged battery can

operate the scale for approximately 80 hours independent of AC power.

The battery is protected against overcharging and the scale can remain

connected to the AC power line.

NOTE:

● The battery must be recharged every 3 months if the scale is not

used for a long time.

● Dispose of the lead acid battery according to local laws and

regulations.

2.6 Initial Calibration

When the scale is operated for the first time, a Span Calibration is

recommended to ensure accurate weighing results. Before performing

the calibration, be sure to have the appropriate calibration weights.

Refer to Section 5.1 for Span Calibration procedures and Section 6 for

AUTO CALIBRATION.

3. OVERVIEW OF DISPLAY INDICATORS AND

KEYBOARD FUNCTIONS

3.1 Display Symbols

1 Zero- Is displayed when the “Zero” key is pressed.

2 Tare-Is displayed when the “Tare” key is pressed.

3 Stable-Stable indication, scale is in stable condition.

4 Mode-Is displayed when the “Mode” key is pressed.

5 Setup-Is displayed when the “Setup” key is pressed.

6 CAL-Is displayed when the scale in Calibration Mode.

7 - Power indication.

8 Use key to change-Used to prompt the user while navigating

through the menu system.

9 Press Enter –Used as a prompt to the user to press the Enter key. The

menu item displayed is selected.

10 Press Esc- Used as a prompt to the user to press the Esc key to return to

last menu or exit Setup Mode.

Symbols for weighing units and modes, include:

ozt

dwt

t1.T

pcs

℃

-Carats

-Pounds

-Ounces

-Grain

-Ounces troy

-Pennyweight

-Tael

-Parts counting

-Percent weighing

-Temperature

3.2 Keyboard Functions

: ON/OFF switch

: Function key to choose weighing, counting, percentage

:”Unit” selection, 8 units are available

: Sample key to set the unit weight of sample

: Tare key to deduct the container weight

: Zero key, press this key, the weight will become “0”

: Confirmation key and print key

: Selects various menus

: Return to last menu or exit Setup Mode

: Travels to the left through menus

: Travels to the right through menus

: Travels up through menus

: Travels down through menus

4.OPERATIONS

Press the key for power on ,the scale will be on the weighing

mode using the initial units of weight selected.

4.1 WEIGHING MODE

4.1.1 Units selection

Press the key to choose the weighing units and the display will be

changed to the new value with the units shown.There are up to 8 units of

weight that can be enabled.

4.1. 2 Zero Function

If the zero shifts during operation, press the key to set it to zero.

The Zero function is only active over ±2% of full capacity.

4.1. 3 Tare Function

Tare weight is the weight of a container and can be subtracted by placing

an empty container on the scale. When the display is stable, press the

key. The display will become zero and the display will have a tare

indication.

Cancel the tare function by pressing the key with no weight on the

scale.

Tare range is the full capacity of the scale.

4.1. 4 Over load alarm

When the weight on the scale is more than Max. capacity, the display

shows”-----OL------“ at the same time the buzzer sounds. Please take off

the weight at once. Otherwise the scale will be easily damaged.

4.2 COUNTING MODE

The scale will count parts by weighing a preset number of samples and

setting the display to show the number. Then, as more samples are

added, the display will increase. If necessary, place a container on the

scale and press key before beginning.

After selecting parts counting with the key, press the or

, key to select the sample size (10,20,50,100 pcs).

Put the sample number （same as selected）on the scale and press

key. When the symbol” C” disappears the sampling procedure is

finished and you can start to use the counting function.

If the unit weight is too small(less than 0.2 of a scale division), the display

will show:”----or----pcs.” It would be best to use larger parts or to use ten

times as many parts as required and reduce the displayed values to

1/10th.

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