U.S. Solid USS-DBS81 User manual

Instruction Manual
USS-DBS81 Analytical Balance

Table of Contents
Introduction...............................................................................................1
1.1 Safety Precautions.......................................................................1
Design and Function............................................................................... 3
2.1 Components..................................................................................3
2.2 Keyboard........................................................................................4
2.3 Display Panel................................................................................ 5
Unpacking................................................................................................. 6
Before Using.............................................................................................7
4.1 Leveling the balance....................................................................7
4.2 Calibration......................................................................................8
Operation................................................................................................... 9
5.1 Basic Weighing............................................................................. 9
5.2 Unit Switching............................................................................. 10
5.3 Counting.......................................................................................10
Setting.......................................................................................................12
6.1 Minimum weighing..................................................................... 12
Technical Data........................................................................................13

1
Introduction
Thank you for choosing the U.S. Solid USS-DBS81 Series Analytical
Balance.
The USS-DBS81 Analytical Balance is precise and reliable. It offers a high
level of operating convenience and response sensitivity to facilitate
determination of the weight of your samples. In addition, USS-DBS81
Analytical Balance provides dual (one front and one rear) display screens,
which can be used not only for various scenarios that ordinary
single-screen balances can used, but also for special use scenarios that
single-screen ordinary balances can not meet.
U.S. Solid’s dedicated customer service staff are available to answer any
inquiries regarding applications and accessories.
Please read the manual completely and follow the usage instructions
before installation and operation as this will help you to make full use of
the functions and performance of the USS-DBS81 Analytical Balance.
1.1 Safety Precautions
The U.S. Solid USS-DBS81 Analytical Balance qualifies as state-of-the-art
technology and complies with all recognized safety rules. Improper use
or handling, however, can result in damage and/or injury. Please follow

2
the precautions below to ensure safe and trouble-free operation of your
balance.
•The balance has a 3-pin power socket equipped with a
ground terminal. To prevent electric shock and to maintain
stability in operation of the balance, be sure to ground the balance.
•Avoid getting the balance wet as it is not water resistant. Any leakage
of liquid into the balance may damage the balance or cause an electric
shock to the user.
•Use a power source (voltage, frequency, outlet type)
adapted to the specification of the balance. If excessive
voltage is used, the balance may overheat and be damaged or cause a
fire.
•Operate the balance on a stable, rigid and flat table.
•Handle the balance carefully. It is a precision device,
subjecting it to impact may result in a malfunction.
•If the device is not be used for a long period of time, the power
should be turned off and disconnect the power cable.
•Do not disassemble, remodel or repair this product or accessories.
•Do not weigh items larger than the balance's range, as this may
damage the load cell of the balance.

3
Design and Function
2.1 Components
1: Upper Handle
2: Upper Glass
3: Housing Ⅰ
4: Vertical Strut
5: Rear Glass
6: Side Glass
7: Side Handle
8: Weighing Pan
9: Glass
10: Tray
11: Housing Ⅱ
12:Housing Ⅲ
13: Housing Ⅳ
14: Leveling foot
15: Dust Cover
16: Battery Cover

4
2.2 Keyboard
Key
Description
Turn the power on or off
Enter the counting function
Long press with “TARE”to enter the minimum weight setting
Tare the balance
Long press with “SET”to enter the minimum weight setting
Performs weight calibration
Switch the weighing units

5
2.3 Display Panel
USS-DBS81 Analytical Balance provides dual display screens, one front
and one rear.
No.
Description
1
“+”: Indicates positive values
“-”: Indicates negative values
“○”: Stabilization indicator (Disappearance indicates
stabilization of balance)
2
Weight value
3
Weight unit

6
Unpacking
The USS-DBS81 Analytical Balance is a precision instrument. Unpack the
balance carefully and check the delivered items for completeness.
The following accessories are part of the standard equipment for your
new USS-DBS81 Analytical Balance:
·1 Balance Main Body
·1 Weighing Pan
·1 Draft Shield
·1 Power Cable
·1 Calibration Weight
·1 Instruction Manual
·1 Quality Certification
Check the instrument for damage in transit. Immediately inform the
U.S. Solid customer service if you have any complaints or parts are
missing.

7
Before Using
·Adjust the leveling feet of the analytical balance until the air bubble in
the indicator is centered.
·Warm up for 30 to 60 minutes after starting up to improve the stability
of weighing.
·Check the accuracy of the reading with the weight. If there is any
deviation, please follow the calibration method below to calibrate the
balance.
4.1 Leveling the balance
Accurate horizontal positioning necessary for repeatable measurements
and exact results. To compensate for small irregularities or tilts at this
location, the instrument needs to be leveled.
Adjust the leveling feet of the analytical balance until the air bubble in
the indicator is centered. The level indicator is located under the cover
towards the rear of the analytical balance.

8
4.2 Calibration
Calibration is a necessary step to assure the analytical balance will
accurately weigh the sample.
Perform calibration operations in the following situations:
•Changes in the location of use (including moving in the same room).
•Changes in ambient conditions.
•Prior to each use.
1. Zero the balance in the weighing state;
2. Press the “CAL”button and “--CAL--”will be displayed;
3. After that “200.000”(or “100.000”) will be flashing displayed, then
place the calibration weight on the pan ;
4. “------”will be displayed, then “200.000”(or “100.000”) will be
displayed again;
5. Remove the calibration weight and “------”will again displayed.
6. The calibration is completed and it will return to the weighing
interface.

9
Operation
5.1 Basic Weighing
1. Zero the balance in the no-load state.
2. Open the glass door of the weighing chamber and place the weighing
sample on the weighing pan, then close the glass door.
3. After the display stabilizes, read the value displayed.
Weighing a sample that needs to be in a container:
1. Open the glass door of the weighing chamber and place the weighing
container on the weighing pan, then close the glass door again.
2. Wait for the display to stabilize. Then press “O/T”to tare, and the
displayed value will return to zero.
3. Open the glass door and place the sample(s) to be weighed in the
weighing container, then close the glass door.
4. After the display stabilizes, read the value displayed.

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5.2 Unit Switching
The USS-DBS81 Analytical Balance offers four weight units of “g”,“oz”,
“ct”and “gn”. The unit selection function can be used to meet the unit
requirements in various usage situations.
In the weighing state, press the "mode" button to switch weight units.
5.3 Counting
The U.S. Solid USS-DBS81 Analytical Balance has a built-in counting
function that meets various industrial counting requirements, especially
the counting function for small components.
To ensure the accuracy of the counting function for small components, it
is necessary to ensure that the weight of all samples is consistent, and
that the weight of a single object is ≥0.004g.
1. Press “SET”and “--COU--PCS”will be displayed;
2. After that “10 PCS”will be flashing displayed;
3. Press “ON”to select the quantity and put the corresponding quantity
of samples on the pan;
4. Press “SET”to confirm and “-------PCS”will be displayed;

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5. Put samples to be counted after the “10 PCS”again displayed and the
corresponding number appears.
Exit counting function:
1. Press “SET”and “------”will be displayed;
2. After that “--ERR--”will be flashing displayed;
3. Press “SET”to exit the counting function and return to the weighing
interface.

12
Setting
6.1 Minimum weighing
The minimum weight can be set according to the use requirements.
1. Long press “TARE”and “SET”simultaneously until “1 d”displayed;
2. Press “SET”or “CAL”to turn up or turn down respectively (from “1d”
to “5d”,“d”means minimum scale value 0.001 g);
3. Press “TARE”to confirm.

13
Technical Data
Model
USS-DBS81-
110G
USS-DBS81-
210G
USS-DBS81-
310G
Capacity
110 g
210 g
310 g
Calibration Weight
100 g
200 g
200 g
Readability
0.001g (1 mg)
Repeatability
±0.002 g
Linearity Deviation
±0.003 g
Stabilization Time
Within 3 seconds
Pan Size
Φ3.55 inches (90 mm)
Interface
RS232
Display Screen
Dual
Power
110V 60Hz AC
Dimensions
10.6×7.9×10.6 inches
Net Weight
7.72 lbs
Shipping Weight
8.82 lbs

Contact
Feel free to visit our website: www.ussolid.com
You can email us at [email protected]
You can call one of our friendly customer service representative at
[phone]