American Weigh Scales
TL-330 (330lb x 0.2lb)
TL-440 (440lb x 0.5lb)
User Manual
TL-Series
Copyright © 2012 American Weigh Scales, Inc.
All rights reserved. Rev. 2.0
TL-Series Manual
Thank you for purchasing the American Weigh
TL-Series hanging 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.
• 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 cordless phones.
• Suspend the scale from a stable point free from
vibration.
• Do not drop items onto the weighing hook. This may
cause damage to the load sensor.
• Avoid dropping your scale. The warranty does not
cover damage due to rough treatment or overload.
• Checkthebatteriesrstifyouarehavinganytrouble
with your scale. This simple step can remedy most
scale issues.
• Calibration is performed at the factory. Only
experienced users should perform calibration when
the scale requires it.
I. Part List
1. Scale
2. S-Hook and Shackle
3. AAA Batteries (x2)
II. Key Description
1. ON/OFF/TARE - Tap to turn the scale on or re-zero
the scale. Hold to turn the scale off.
2. UNIT Key - Tap to change the unit between LB, OZ,
or KG. Hold to change auto-off setting (see V).
3. HOLD Key - Tap to change the scale’s display hold
mode between Auto Hold, Peak Hold, and No Hold
(see VII).
III. Battery Installation
lb
oz
kg
AAA
AAA
ON/OFF
TARE
UNIT
HOLD
N
lb
oz
kg
AAA
AAA
ON/OFF
TARE
UNIT
HOLD
N
2.
1.
3.
TL-Series Manual
1. Beforeusingthescaleforthersttime,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.
IV. Operation
1. Press the ON/OFF/TARE key to turn the scale on.
2. Wait for the display to display zero.
3. Hang the item to be weighed from the weighing
hook.
4. Observe the weight on the display.
5. To re-zero the scale, tap the ON/OFF/TARE key.
6. To turn the scale off, hold the ON/OFF/TARE key.
V. Auto-Off Setting
This scale has a selectable auto-off feature.
1. Press and hold the UNIT key to toggle the auto-off
setting on or off. A message will display on the
screen to indicate your selection:
AUTO: Auto-Off is Enabled. Scale will turn off
after 2 minutes of non-use.
OFF: Auto-Off is Disabled. Scale will remain on
until turned off manually.
VI. Changing the Unit of Measure
This scale can read in LB, OZ, or KG. To change the
weighing unit, follow these instructions:
1. Tap the UNIT key until the desired weighing unit is
indicated on the right side of the display.
• TL-330 & TL-440 Units: lb (pound) oz (ounce)
kg (kilogram)
VII. Hold Setting
You can change the scale’s hold setting between three
different modes: Auto Hold, Peak Hold, and No Hold. To
change the hold setting:
1. Tap the HOLD key. The display will show a letter at
the left side of the display to indicate the current hold
setting. These are:
A = Auto Hold - Weight is locked on the display
when stabilized.
P = Peak Hold - Highest weight is locked on
the display. Good for measuring forces.
N = No Hold - The weight does not lock on the
display.
VIII. Calibration
Calibration and adjustment are performed at the factory.
There is no need to calibrate unless you are experiencing
issues. Only advanced users should calibrate and adjust the
scale. 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.
TL-Series Manual
Model Acceptable
Tolerance (±)
Calibration
Weight
Recommended
Accuracy Class
TL-330 0.3kg 100kg OIML M3
TL-440 0.6kg 100kg OIML M3
IX. Adjustment
1. With the scale OFF, press and hold the UNIT and
ON/OFF/TARE keys at the same time until a random
number shows on the LCD. If you wish to cancel,
press the HOLD key, otherwise, continue to step 2.
2. Make sure there is no weight on the hook then press
the ON/OFF/TARE key once more. The display will
ash“Zero”followedbytherequiredweightinKG
(100kg).
3. Place the required weight on the scale hook.
4. Waitbrieyfortheweighttostabilize,thenpressthe
ON/OFF/TAREkeyonelasttimetoconrm.
5. Thedisplaywillshow“PASS”.Calibrationis
complete.
X. Troubleshooting
• Problem: Scale will not turn on
• Solution: Check the batteries and ON/OFF lock
• Problem: Display will not stabilize
• Solution: Make sure the weight is stable on the
hook and not shaking or swinging
• 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.
3. Lo - Low Power. Replace the batteries.
XII. Specications
TL-330 TL-440
Max. Capacity 150kg / 330lb /
5280oz
200kg / 440lb /
7040oz
Readability 0.1kg / 0.2lb / 1oz 0.2kg / 0.5lb / 2oz
Min. Capacity 0.3kg / 0.6lb / 3oz 0.6kg / 1.5lb / 6oz
Power 2 x AAA
Dimensions 6.0 x 2.8 x 1.2 in.
Hook Dimensions Gap: 0.7 in / Throat: 1.3 in
Warranty 10 Year Limited Warranty
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