USPS SPS User manual

SELECT UNIT CALIBRATION
Scale is pre-calibrated at factory, do not calibrate unless
scale is not accurate
1. Press and hold ZERO key first before pressing ON/OFF key.
2. Release both keys
3. Display will show “Cu=xx”
4. Note: xx is the calibration weight.
5. Press UNIT key to select if calibration weight is kg or lb.
6. Press HOLD key to scroll up the 2nd or left digit weight (example 10, 20,
30, 40, 50, 60 and etc.)
7. Press ZERO key to scroll up the 1st or right digit weight (example 21,
22, 23, 24, 25, 26 and etc.)
8. Press ON/OFF
9. Display will show CAL and then a 5 digit A/D value. A/D value is the
internal digital count on the scale. It should be more or less stable
within +/- 5 counts. If it keeps going up or down continuously or
remains very unstable, the load cell may be bad.
10. Press ZERO. (note this step is to capture the zero point –no weight on
the scale platter)
11. Display will show “Cu=xx”. (note: xx is the weight in lb or kg that you
entered on steps 6 and 7)
12. Place weight on scale
13. Display will show PASS and return to normal weighing mode
14. Calibration is complete, remove the weights and turn off the scale
If calibration is repeatedly incorrect then:
1) Replace the batteries
2) Try a more stable surface or vibration and interference free location,
POSTAL SCALE
Model SPS
INSTRUCTION MANUAL
SPS M-1-0511

SAFETY PRECAUTIONS
All safety messages are identified by the words "WARNING" and "CAUTION".
These words mean the following:
△
!WARNING
Important information to alert you to a situation
that might cause serious injury and damage to your
property if instructions are not followed.
△
!CAUTION
Important information that tells how to prevent
damage to the equipment.
When using the scale, the following safety precautions should always be
followed.
△
!WARNING
Use only the correct AC adaptor with the scale. Other adaptors may cause
permanent electrical damage.
△
!CAUTION
Avoid placing the scale in direct sunlight, this may cause discoloration or
malfunction. Do not use scales onto the carpet base, it may cause scales
inaccurate and need re-calibration.
Replace all batteries at the same time –Do not replace only a portion of the 6
batteries as this may cause a malfunction.
If the scale is not to be used for a long period of time, remove all batteries from
the battery compartment to avoid leakage, which may cause damage to this
scale.
Avoid overloading the scale, as this may cause permanent damage and
void your warranty –do not EVER exceed the maximum capacity of the
scale
Keep the scale away from water –this scale is not water resistant. Shock,
injury and electrical damage can occur if used in a wet location!
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SPECIFICATIONS
Model
Capacity
Division
SPS-35
35lb/16kg
2g/0.1oz 5g/0.2oz
SPS-55
55lb/25kg
5g/0.2oz 10g/0.5oz
SPS-75
75lb/34kg
5g/0.2oz 10g//0.5oz
Platter / Tray
8.7x7.1 inch/220×180mm
Net/gross weight
1000g/1750g
Package
Standard carton: 26x12.5x33 (cm3)
6 units in one box：54x35x40(cm3)
Operating Temperature
Optimum: 0-40℃(32-104℉)
Power source
6×AA Size Batteries or AC/DC
Adapter 9V/100mA
**SPECIAL WARNING**
Cell-Phones, Cordless-Phones, and any radio-frequency device can cause
temporary interference and cause the scale to temporarily not work properly.
Please do not use any electronic device near the SCALE. Just like in an
Airplane, do not use your cell-phone near the scale when it is in use. While
there is NO risk of permanent damage to the scale, interference can cause an
incorrect calibration or incorrect weight readings.
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FEATURES
Auto shut off (selectable)
Auto calibration –with any known lb or kg weight
Auto zero tracking
Auto hold (selectable)
g , lb, oz, kg , lb/oz conversion
Large LCD (6 digits 15 mm high)
Backlight (selectable)
Large square weighing tray
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PARTS DESCRIPTION
Right SIDE
AC adaptor
Socket
ON/OFF key
Turns the scale
power on/off.
UNIT key
Changes weighing units, e.g. g, lb:oz,kg,lb,oz.
HOLD KEY
Remain on the display for 120 seconds
ZERO key (for TARE)
Sets display to zero or
Subtracts weight of a container.
BOTTOM
Batteries
Use 6xAA dry batteries
Battery compartment cover
DISPLAY
ZERO indicator Weighing unit
Negative value indicator
Hold indicator
Stable indicator
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ON/OFF UNIT HOLD
ZERO

HOLD FUNCTION
Once the HOLD key is pressed, the weight will remain on the display for
120 seconds after the item has been removed from the scale so the weight
can easily be read.
1) Place the item on the scale platform.
2) Wait for the stable weights to be displayed.
3) Press the HOLD key. The “HOLD” hold indication will turn-on.
4) Remove the item from the scale platform. The item’s weight will remain on
the display for 120 seconds. You can now also convert this to other
measures (example: lb or kg) by pressing the UNIT key
5) To quit HOLD function, press the HOLD key again.
FUNCTION SETTINGS
1. With the scale in OFF position, press and hold the HOLD key and turn on
the scale by pressing ON/OFF key. The display will show
A_ON or A_OFF.
2. Auto shut off mode.
Press the [ZERO] key, the display will show A_ON or A_OFF. A_ON
means the auto shut off function is active. Press [ZERO] again, the display
will show A_OFF, this means the auto shut off function is inactive.
3. Auto backlight mode.
Press [HOLD] key, the display will show L_ON or L_OFF, press [ZERO],
selection display L_ON, this means backlight function active, press [ZERO]
again, the display will show L_OFF, this means backlight function inactive.
4. Selection of auto HOLD mode.
Press [HOLD] key, the display will show H_ON or H_OFF, press [ZERO],
selection display H_ON, this means AUTO-HOLD function active （The
weight must be more than 2 lb ）, press [ZERO] again, the display will
show H_OFF, this means AUTO-HOLD function inactive.
5. Return to weighing mode.
Press [ON/OFF] to turn the power off, press [ON/OFF] again to turn on the
power and the scale will return to weighing mode.
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WEIGHING
Whenever possible, please allow the scale to warm up for several seconds after
first turning the power on so that the scale will function properly and accurately.
Error messages
Err-O: Overload
Lob: Low battery
Weighing Procedures
1. Press ON/OFF to turn on the scale. The display will show “HELLO” for a
few seconds and “0” will appear on the display.
2. Select the weighing unit by pressing “UNIT” key.
3. The selected unit will be display on the cursor next to the weight value.
4. Start weighing. Make sure the display is “0”, if not press the “ZERO” key
to zero the scale.
5. If you are using a container or tray, place the empty container on the scale;
wait for the stability indicator to be displayed, press “ZERO”, the display will
read “0” with the tray or container on top.
6. Place your objects to be weighed on the container. The weight will be
displayed once the scale is stable.
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