American Weigh Scales, Inc.
User Manual
JB-500
Digital Tabletop Scale
JB-500
g
MODE
JB-500 Manual
Thank you for purchasing the American Weigh JB500 digital tabletop 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 acclimate 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.
I. OPERATION
Place Scale on a horizontal at surface.
1. Press [ ] 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 [ ] 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 a 500g calibration weight for your
scale or the calibration will not be accurate**
Calibration Procedures
1. Press [ ] key to turn the scale on.
2. Press and hold the [
] key until the display shows”CAL”.
Release the key now.
3. The display will ash “0.0”. Press the [
] key again.
4. The display will ash “500.0”. Place your 500g calibration
weight on the scale.
5. Press [ ] again. The display should read “PASS”.
You can now turn off your scale.
Please check the availability of weights with your scale
supplier.
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.
[o-ld] The scale has been overloaded. You can
try recalibrating the scale as shown above.
You are overloading the scale. Remove the
excessive load immediately!
[out2] Scale is out of calibration. Try
recalibrating. (see Section III)
Specications
Model JB-500
Capacity
500g / 17.64oz / 16.08 ozt / 321.5dwt
Resolution
0.1g / 0.01oz / 0.01ozt / 0.1dwt
Display
5 - Digit Backlit LCD
Calibration Weight
(not Included)
500g
Platform Dimensions
(inches)
4.2 x 3.3” Black Glass
Scale Dimensions
(inches)
5.2 x 5.2 x 2.1 ”
Power
2 x AAA Alkaline Batteries
Gross Weight
1.63 lb
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