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American Weigh Scales
SR-Series
User Manual
SR-1KG (1kg x 0.001g)
SR-5 (5kg x 0.005g)
SR-20 (20kg x 0.01kg)
Copyright © 2010 American Weigh Scales, Inc.
All rights reserved. Rev. 2.0
SR-Series Manual
Thank you for purchasing the American Weigh
SR-Series digital 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:
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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.
Gently apply all items to be weighed. Do not shock
load items onto the weighing hook.
Avoid dropping your scale. The warranty does not
cover damage due to rough treatment or overload.
Check the batteries first 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.
I. Part List
1. Scale
2. Weighing Tray
3. AAA Batteries (x2)
II. Key Description
Auto-Off
Select
lb
4
HOLD
4
B
ON/OFF
TARE Key
LB
2
x 0.0
L
III. Battery Installation
1. Before using the scale for the first time, 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.
SR-Series Manual
IV.Operation
1. Press the
key.
2. Wait for the scale to stabilize (
will be displayed in
the bottom left corner of the LCD). Place the item to
be weighed on the weighing hook.
3. When the weight is stable, the red light will turn on,
and HOLD will be displayed below the weight.
4. Remove the object(s) from the hook and tap the
key to re-zero the scale.
5. To turn the scale off, press and hold the
key.
V. Auto-Off Selection
To conserve battery power, this scale is set to turn off
automatically after 60 seconds of inactivity.
1. To disable the auto-off feature, open the battery
compartment and locate the Auto-Off Select switch.
(see Section II)
2. Move the switch to the UP position to disable the
Auto-Off feature.
3. Move the switch to the DOWN position to enable the
Auto-Off feature.
VI.Changing the Unit of Measure
This scale can read in KG or LB. To change the weighing
mode, follow these instructions:
1. Tap the
key to turn the scale on, then
immediatedly begin tapping the key again. The
indicator should change between kg or lb (g or oz for
SR-1) as you continue to tap the key.
2. After a couple of seconds of no activity the scale will
enter normal weighing mode.
• SR-1KG Units: g (gram)
oz (ounce)
• SR-5, SR-20 Units: kg (kilogram)
VII.
lb (pound)
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. Turn on the scale as described in Section IV.
2. Attach your tare item / empty container using
the hook and wait for it to stabilize (HOLD will be
displayed).
3. Tap the button. “0.0” will be displayed.
4. You can now add items to the container to obtain
just the weight of the contents.
5. When the container is removed the weight will be
held on the display. Press again to 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 on next page), adjustment is
required.
SR-Series Manual
Model
SR-1KG
Acceptable
Tolerance (±)
2g
Calibration
Weight
1000g
Recommended
Accuracy Class
OIML M1
SR-5
0.015kg
1000g
OIML M1
SR-20
0.03kg
5000g
OIML M1
IX.Adjustment
1. Press the
key to turn the scale on.
2. Once the LCD shows “8888” press the
eral times until the inner code displays.
key sev-
3. Press again. The display will flash “CAL” followed
by the required calibration weight (see chart).
4. Add the required weight. The display will show pass
and return to normal weighing mode.
5. Remove the weight and press and hold the
turn the scale off. Calibration is complete!
key to
X. Troubleshooting
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Problem: Scale will not turn on
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Solution: Check the batteries
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Problem: Display will not stabilize
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Solution: Make sure the weight is stable on the
hook and not shaking or swinging
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Problem: Displayed weight is inaccurate
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Solution: Perform a calibration adjustment
XI.Error Codes
1. OUTZ - Zero setting has shifted. Perform calibration
adjustment. If the problem persists, the load cell may
be permanently damaged due to overloading.
2. EEEEE - Maximum capacity exceeded. Remove the
extra weight to avoid damaging the load cell.
3. LLLLL - Load cell has been overloaded.
4. UNST - The scale is unstable. Use the scale in a
more stable position
XII.
Specifications
SR-1KG
Max. Capacity
1000g / 35.30oz
Readability
1g / 0.05oz
Min. Capacity
3g / 0.10oz
Power
2 x AAA Alkaline Batteries
Dimensions
4.0 x 2.3 x 0.7
Hook Dimensions
Gap: 0.5in / Throat: 0.5in
Warranty
10 Year Limited Warranty
SR-5
SR-20
Max. Capacity
5kg / 11lb
20kg / 44lb
Readability
0.005kg / 0.01lb
0.01kg / 0.02lb
Min. Capacity
0.015kg / 0.03lb
0.03kg / 0.06lb
Power
2 x AAA Alkaline Batteries
Dimensions
4.0 x 2.3 x 0.7
Hook Dimensions
Gap: 0.5in / Throat: 0.5in
Warranty
10 Year Limited Warranty
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