AWS ZEO-50 Manuel utilisateur

ZEO-50 (50g x 0.001g)

User Manual

ZEO-50

Thank you for purchasing the American Weigh

ZEO-50 portable milligram scale. Please read all operating

instructions carefully before use. Scales are precision

measuring devices and should always be handled with

proper care. To ensure years of reliable service, keep these

simple tips in mind:

• Do not exceed the scale’s maximum capacity.

Overloading your scale can permanently damage it!

• Avoid exposure to extreme heat or cold. Scales

perform best at normal room temperature. If

temperatures have changed dramatically, calibration

and adjustment may be necessary.

• Allow your scale to warm up for 30-60 seconds before

performing calibration and adjustment(if available).

• Store your scale in a clean, dry location. Dust, dirt,

and moisture can accumulate on the weighing

sensors and electronics causing inaccuracy or

malfunction.

• Avoid using your scale in close proximity to strong

radio wave emitting devices such as computers, cash

registers, and cordless phones.

• Alwaysweighonaatandlevelsurface,freefrom

vibrations and drafts. The corner of a room is usually

the most stable.

• Gently apply all items to be weighed. Do not drop

items onto the weighing platform.

• Avoid dropping your scale. The warranty does not

cover damage due to rough treatment or overload.

• Checkthebatteriesrstifyouarehavinganytrouble

with your scale. This simple step can remedy most

scale issues.

• Do not disassemble your scale. This product contains

no user serviceable parts.

I. Part List

1. Scale

2. 50g Calibration Weight

3. Tweezers & Spoon

4. Weighing Tray

5. Four AAA Batteries

II. Key Description

1. On/Off Key - Turns the scale on or off.

2. Mode Key - Changes the displayed unit of measure.

3. Tare Key - Re-zeros the scale. Used to remove the

weight of a tray or container.

4. PCS Key - Press to enter counting mode. Hold to

set the sample quantity size.

III. Battery Installation

1. Beforeusingthescaleforthersttime,check

the battery compartment and remove any plastic

insulation strips or packaging that may be in place to

prevent battery drainage during shipping/storage.

2. If you are replacing the batteries, make sure the

positive and negative contacts are properly aligned.

On/O Key

Mode Key

Tare Key

PCS Key

ON/OFF

MODE TARE

PCS

ZEO-50

IV. Basic Operation

1. Placethescaleonaat,levelsurface.

2. Place the round weighing tray on the scale’s

platform and press the ON/OFF key to turn on the

scale.

3. Once the start-up process completes and the scale

goes to zero you are ready to weigh.

4. Place the quantity to be weighed in the weighing

tray.

5. Wait a couple of seconds for the display to stabilize

before taking a weight reading.

V. Changing the Unit of Measure

1. Press the MODE key to change the scale’s

displayed unit of measure.

2. If the scale is turned off and then back on, it will

default to the last unit used.

• ZEO-50 Units: g (gram) oz (ounce) ozt (troy

ounce) dwt (pennyweight) ct (carat) gn (grain)

VI. Using the Tare Feature

You can use this scale’s tare feature to subtract the weight

of an empty container or vessel for net weight determination.

NOTE: The weight of the container will subtract from the

available capacity.

1. Place the empty container or vessel on the weighing

platform.

2. Press the TARE key once. The display will then

reset to zero. If the container is removed, it’s weight

will be displayed as a negative number.

3. Youmaynowllthecontainerwiththequantityto

be weighed. The display will show the net weight of

the contents.

4. To return to normal weight display (gross weight),

remove any items from the weighing platform and

press the TARE key again to re-zero the scale.

VII. Using the Counting Feature

You can use the counting feature to count items of uniform

weight.Asamplequantitymustrstbeweighedtodetermine

the piece weight:

1. Manually measure out either 25, 50, 75, or 100 pcs

of the items you wish to count and place them on

the platform.

2. Press and hold the PCS key until the display shows

the default sample size: 25.

3. Press the MODE key to change the sample size to

match the number you placed on the scale.

4. PressthePCSkeytoconrmthesamplesize.

5. The display will now show “pcs” next to the value.

You may remove the sample quantity and place any

amountonthescaletondoutthecount.

VIII. Calibration

Calibration and adjustment are performed at the factory.

However, the weighing range can shift slightly during

shipping. Also, due to changes in local acceleration of gravity

around the world, adjustment is recommended when moving

the scale from one location to another. To check calibration:

1. Place the required calibration weight on the scale

and note the displayed value.

2. If the displayed value is not within acceptable

tolerance (see chart on next page), adjustment is

required.

ZEO-50

Model Acceptable

Tolerance (±)

Calibration

Weights

Recommended

Accuracy Class

ZEO-50 0.005g 50g OIML M2

IX. Adjustment

1. Turn the scale on and wait for the display to show

“0.000g”.

2. Press and hold the MODE key until the display

shows “CAL” then release.

3. Press the MODE key once more. The display will

ash“50.000g”.

4. Place the 50g calibration weight on the center of the

platform. Once the weight is accepted, the display

will show “PASS” then return to normal weighing.

Calibration is complete!

X. Troubleshooting

• Problem: Scale will not turn on

• Solution: Check the batteries

• Problem: Displayedweightuctuatesrandomly

• Solution: Make sure your workspace is stable and

free of any air currents or vibration

• Problem: Displayed weight is inaccurate

• Solution: Perform a calibration adjustment

XI. Error Codes

1. OUTZ - Zero range has shifted. Perform calibration

adjustment. If the problem persists, the load cell may

be permanently damaged due to overloading.

2. 88888 - Maximum capacity exceeded. Remove the

extra weight to avoid damaging the load cell.

3. L - Batteries are low. Replace the batteries.

ZEO-50

Max. Capacity 50g

Readability 0.001g

Power 4 x AAA

Dimensions 5.9 x 3.8 x 2.5”

Platform Dimensions 2.6” Ø

Warranty 10 Year Limited Warranty

Capacity/Readability Charts

ZEO-50

50g x 0.001g

1.7637oz x 0.0001oz

1.6075ozt x 0.0001ozt

32.15dwt x 0.001dwt

771.62gn x 0.02gn

250ct x 0.005ct

ZEO-50

American Weigh Scales, Inc.

Norcross, GA 30092

Made In China to our exact

specicationsandqualitycontrol.

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