PROPER OPERATION AND ENVIRONMENT
Avoid lengthy exposure to extreme heat or cold, your scale works
best when operated at normal room temperature. Always allow the
unit to acclimate to a normal room temperature for at least one
hour before use.
Allow sufficient warm up time. Turn the scale On and wait a few
seconds to give the internal components a chance to stabilize
The cleaner the environment the better. Dust, dirt, moisture,
vibration, air currents and proximity 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
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.
Important: Do not operate near cell phones, radios, computers,
or any other electronic device.
DELAY - scale has a built in delay after pressing buttons for
Remove the batteries if you plan to store the scale for longer
then 10 days
Mode selection: Press and release the key once to change weight
unit. Calibration: Depress this key for four seconds to begin
calibration as outlined under the Calibration Procedure on the
Press this key to turn unit on. Once the unit is on, press and
hold the same key to turn the scale off.
The following steps outline the procedure for cumulative weighing
of samples: Switch the scale on Press the COUNT key once. The
display will show "S=10". Put 10 pcs of samples on the
platform. The display will show "10 pcs" and the scale
is ready for counting. NOTE: You can choose the quantity of samples
as 20pcs by pressing the COUNT key twice instead of once. The
display will show "S=20". Put 20pcs samples on the platform.
The display will show Ò20 pcsÓ and the scale is
ready for counting.
Press tare to reset the scale to zero. Tare can be used for eliminating
from a sample (or a procedure) the weight value of a container
weight is permanently removed for the remainder of the procedure.
Note: When all weight are removed from the weighing tray, the
tared value of a container will be displayed as a negative number.
Cycle the power on the scale to reset the scale to zero.
The scale has a unique built in protective cover. The cover is
designed to allow the weighing of small precious stones with the
cover closed. For larger items, please open the cover. For accuracy,
When weighing with the cover closed, be sure the items you are
weighing are not touching the cover.
Two "AAA" size ALKALINE batteries are required.
Release the battery cover by sliding out-wards.
Place batteries into battery compartment aligned correctly.
Replace battery cover. Do not use excessive force!
The scale is now ready for battery operation.
Always perform calibration procedure after first turning the unit
on and allowing time for it to warm up and stabilize. 60 seconds
should be sufficient. For best results repeat this process at
regular intervals if the scale is subject to weather or altitude
changes. Incorrect calibration can occur if you do not follow
the steps exactly. If your scale does not perform accurately,
please try replacing your batteries before you calibrate. Brand
new scales may require multiple calibrations during the load cell
break-in time. The scale must be on a stable, vibration free surface.
Turn scale on and allow unit to stabilize for 60 seconds. Press
and hold the "CAL/MODE" key for 6 seconds then release.
The display will show CAL then CAL 0, then LoAd 100g (or LoAd
200g for the Proscale 500) will appear. It's telling you to calibrate
Gently place the 100 gram (200 gram for the Proscale 500) weight
on the scale and wait.
The scale will flash 100g or 200g, then DONE, then 100g or 200g.
Gently remove the weight. Calibration is complete. Note: If after
calibration your scale does not read accurately, this indicates
calibration error and the calibration process should be repeated.
POWER UP SEGMENT TEST
When first turning the unit on, all segments of the display will
appear as shown below. This display will remain for approximately
3 seconds and then reset to zero. The display may also change
brightness before 0.0 or 0 appears.88888
STABLE READING INDICATION
This is a very precise scale - the display may seem to wander
or jump when weighing. This is due to air currents or vibrations.
Stable weighing is achieved when the small o appears in the top
left corner of the display.
When an applied load exceeds the capacity. "Err" will
appear on the display. Remove excessive load immediately. The
unit should return to normal operation. Remember: You can permanently
damage the scale by overloading it!
Any tarred value or a value left in memory will be displayed as
a negative number once all weight is removed from the unit. Press
tare to return the unit to zero.
The tare feature is designed to allow the user to reset the scale
to zero for certain circumstances. Tare can be used to eliminate
the value of a pan liner, scoop, beaker etc. Place the container
on the weighing tray, wait for a stable reading and then press
"TARE". The unit returns to zero and the weight value
of the container is permanently removed for the remainder of the
Note: When all weight is removed from the weighing tray, the
tared value of the container will be displayed as a negative number.
Press the "TARE" again to return to zero or cycle the
power on the scale.
AUTO SHUT OFF
An auto shut off feature is provided to conserve battery power.
The unit will automatically turn off after approximately 2 minutes
This scale is warranted from all defect in materials or craftsmanship
for 5 years from the date of purchase to the original consumer
purchaser. Any defect created by misuse, abuse, overload or physical
damage is not covered. Returns must be Mailed to the return center.
We do not accept returns of used scales from our resellers. You
must return all scales directly to our repair center.