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American Weigh Scales, Inc.
AMW Series
D i g i t a l P o c k e t S c a l e
AMW-50
AMW-100
AMW-250
AMW-350
AMW-500
User Manual
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AMW Series Manual
Thank you for purchasing the American Weigh
AMW-Series digital scale. Please read all operating
instructions carefully before use. This electronic scale
is a precision instrument. With normal care and proper
treatment, it will provide years of reliable service.
Never load the scale with more than the maximum
capacity. Overloading will permanently damage it!
Avoid any exposure to extreme heat or cold. Your
scale works better when operated at normal room
temperature. Always allow the scale to acclimatize to
normal room temperature for at least one hour before
use.
Give your scale sufcient warm up time. Usually
30-60 seconds before calibration to give the internal
components a chance to stabilize.
Keep your scale in a clean environment. Dust, dirt,
moisture, vibration, air currents and a close distance to
other electronic equipment can all cause an adverse
effect on the reliability and accuracy of your scale.
Handle with care. Gently apply all items to be weighed
onto tray top. Although this scale is designed to be
quite durable, try to avoid rough treatment as this may
permanently damage the internal sensor.
Avoid shaking, dropping or otherwise shocking the
scale. This is a precision instrument and must be
handled with extreme care.
Only operate the scale on a stable, vibration free
surface.
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I. OPERATION
Place Scale on a horizontal at surface.
1. Press [ON/OFF] key.
2. Wait until "0.0” is displayed.
3. Put the object(s) on the weighing platform.
4. Using the [MODE] key, you can switch between the
weighing units.
II. TARE WEIGHING
1. Turn on scale as described above.
2. Place the "tare item" on the platform.
3. Press [TARE] and wait until "0.0" is displayed.
4. Add the "net-weight-item".
III. CALIBRATION
Calibration is NOT required before rst use. Only
calibrate if scale is not weighing properly.
**Make sure you use the correct calibration weight for
your scale or the calibration will not be accurate**
AMW-50: 50g calibration weight
AMW-100: 100g calibration weight
AMW-250: 200g calibration weight
AMW-350: 300g calibration weight
AMW-500: 500g calibration weight
Calibration Procedures for AMW-250/350/500
1, Turn OFF the scale, press and hold the [CAL] key and then
press [ON/OFF] shortly. After 1-2 seconds, the scale will display
a random number. Now release the [CAL] key.
2, Wait 2 seconds and press [ON/OFF] key again shortly.
3, The LCD display will read “2ero” followed by the amount of
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weight required to calibrate (listed above).
4. Place the required calibration weight on the platform (ie.
AMW-250 place a 200g on the scale)
5. Press [ON/OFF] again. The LCD display reads “CAL”, then
“PASS”.
6. Remove the weight and press [ON/OFF] to turn off the scale.
Finished! Repeat if needed.
Calibration Procedures for AMW-50
1. Turn OFF the scale.
2. Press [ON/OFF] shortly. Then immediately press and hold
[MODE] until “CAL” is displayed. Release the [MODE] key.
3. Press [MODE] again. Now the display will show “CAL” and
“50.00” will ash 3 times.
4. Place a 50g weight on the center of platform. Wait 3-4
seconds. The LCD display will read “PASS”, then “50.00”.
5. Remove the weight and press [ON/OFF] to turn off the scale.
Finished! Repeat if needed.
Calibration Procedures for AMW-100
1. Turn on the scale by pressing [ON/OFF] key.
2. Wait until the LCD displays "0.00" and then press and HOLD
the [MODE] key for 3 seconds, the LCD will display "CAL"
then release the [MODE] key.
3. Press the [MODE] key again, the LCD will display "CAL" and
then "100.00"
4. Add a 100g calibration weight, the display will show "PASS"
and return to normal weighing mode.
5. Put away the calibration weight and press [ON/OFF] to turn
of the scale and the calibration is nished!
Please check the availability of weights at the store
you bought your scale from.
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IV. TROUBLESHOOTING
The primary reasons for inaccuracy or malfunction
are low batteries, incorrect calibration, overload or
operating on an unstable surface. Please keep this in
mind and maintain and operate your scale properly.
This scale is a precise instrument and must be
handled with the utmost care and caution.
[Display] Elimination of errors
Nothing, Battery-Symbol, [lo] or [88888]
Change the batteries.
[OUE2] Recalibrate the scale as shown above.
[EEEEE] You are overloading the scale. Remove the
excessive load immediately!
[LLLLL] The delicate weighing load cells have
been damaged by misusing the scale
(i.e. it was shocked, dropped or
overloaded). You can try recalibrating the
scale. If the load cell has not been
damaged too much it will work
again after recalibration.
[UNST] Use the scale in a more stable position
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(inches)
Power
Gross Weight
0.36 lb 0.43 lb 0.36 lb 0.36 lb
2 x AAA Batteries (included)
Calibration Weight
(not Included)
Platform Dimensions
(inches)
Scale Dimensions
200g 300g 500g 50g 100g
2.5 x 3 Stainless Steel
5 x 3 x 0.75
Resolution
Backlight
160.8dwt
• • • • •
0.2gn
0.2gn
8.54ozt
0.1g / 0.005oz / 0.005ozt / 0.1dwt
225.1dwt
11.25ozt
16.08 ozt
321.5dwt
771.5gn
0.001oz
0.05ct
0.01g
250ct
1543 gn
0.001oz
0.05ct
0.01g
500ct
Capacity 250g
8.82oz
12.35oz
350g
17.64oz
500g
1.764oz
50g
3.528oz
100g
Model AMW-250 AMW-350 AMW-500 AMW-50 AMW-100
Specications
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