AWS AMW-500i User manual

American Weigh Scales
AMW-500i (500 x 0.1g)
AMW-1000 (1000 x 0.1g)
AMW-2000 (2000 x 0.1g)
AMW-13 (13lb x 0.1oz)
User Manual
AMW-BENCH
Copyright © 2010 American Weigh Scales, Inc.
All rights reserved. Rev. 2.1

AMW-BENCH
Thank you for purchasing the American Weigh
AMW-BENCH digital bench 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.

Hold Mode Tare
ON/OFF
g
I. Part List
1. Scale
2. 9V Battery (x1)
II. Key Description
ON/OFF Key- Turns scale ON or OFF
Hold Key- Press to hold the current weight on the
display. Press again to return to normal weighing.
Mode Key- Changes displayed unit of measure
Tare Key- Subtracts the current displayed weight to
set the display back to zero. See section VI.
Auto-Off Switch- Turns the auto-off feature ON or
OFF. Also has a calibration mode setting.
III. Battery Installation
1. When installing the battery, make sure the positive
and negative contacts are properly aligned.
Hold Key
Calibration /
Auto-O Switch
Mode Key
Tare Key
ON/OFF Key

AMW-BENCH
IV. Operation
1. Placethescaleonaat,levelsurfaceandpressthe
ON/OFF key to turn the scale on.
2. Once the start-up process completes and the scale
goes to zero you are ready to weigh.
3. Place the quantity to be weighed onto the weighing
platform.
4. Wait a couple seconds for the display to stabilize
before taking a weight reading.
V. Auto-Off Feature
1. To disable or enable the auto-off feature, use the
switch on the underside of the scale.
VI. Changing the Unit of Measure
1. Press the MODE key to change the scales displayed
unit of measure.
2. If the scale is turned off then back on, it will default
to the last unit used.
• AMW-500i, AMW-1000, AMW-2000 Units: g (gram)
oz (ounce) ozt (troy ounce) dwt (pennyweight)
• AMW-13 Units: lb/oz (pound/ounce) oz (ounce)
kg (kilogram) g (gram)
VII. 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.
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 below), adjustment is required.
Model Acceptable
Tolerance (±)
Calibration
Weight
Recommended
Accuracy Class
AMW-500i 0.2g 500g OIML M2
AMW-1000 0.2g 1000g OIML M2
AMW-2000 0.2g 2000g OIML M2
AMW-13 2g 5000g OIML M2
IX. Adjustment
1. Turn the scale over and set the switch on the bottom
to “Calibration”
2. Turn the scale right side up again and press the ON/

AMW-BENCH
OFF key to turn the scale on.
3. Press and hold the MODE key until the display
shows “CAL”.
4. Press the MODEkeyagain.Thedisplaywillash
“CAL” followed by the calibration weight value (see
chart on page 5).
5. Place the calibration weight on the center of the
weighing platform. Make sure you are using the
correctweightforyourspecicmodel.
6. Once the weight is accepted, the display will show
“PASS” then return to normal operation. Turn the
scale off and return the switch on the bottom to
Auto-Off Enabled or Auto-Off Disabled.
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. o-Ld - Maximum capacity exceeded. Remove the

extra weight to avoid damaging the load cell.
XII. Specications
AMW-500i AMW-1000
Max. Capacity 500g 1000g
Readability 0.1g 0.1g
Power 1x (One) 9V Battery
Dimensions 1.6 x 6.2 x 7.2”
Platform Dimensions 6.0 x 6.0”
Warranty 10 Year Limited Warranty
AMW-2000 AMW-13
Max. Capacity 2000g 6000g
Readability 0.1g 1g
Power 1x (One) 9V Battery
Dimensions 1.6 x 6.2 x 7.2”
Platform Dimensions 6.0 x 6.0”
Warranty 10 Year Limited Warranty
XIII. Capacity/Readability Charts
AMW-500i AMW-1000
500x0.1g
17.64x0.01oz
16.08x0.01ozt
321.5x0.1dwt
1000x0.1g
35.27x0.01oz
32.15x0.01ozt
643.1x0.1dwt
AMW-2000 AMW-13
2000x0.1g
70.55x0.01oz
64.30x0.01ozt
1286x0.1dwt
13lb x 0.1oz
6kg x 1g