U.S. Solid USS-DBS91 User manual

Instruction Manual
USS-DBS91 Bench Scale

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 scale.......................................................................................... 7
4.2 Calibration....................................................................................................... 9
Operation..................................................................................................................10
5.1 Basic Weighing.............................................................................................10
5.2 Unit Switching...............................................................................................11
5.3 Counting........................................................................................................ 11
Setting........................................................................................................................13
6.1 Baud Rate..................................................................................................... 13
Maintenance............................................................................................................ 14
7.1 Precautions................................................................................................... 14
7.2 Cleaning........................................................................................................ 15
7.3 Disposal.........................................................................................................15
Troubleshooting..................................................................................................... 16
Technical Data........................................................................................................17

1
Introduction
Thank you for choosing the U.S. Solid USS-DBS91 Series Bench Scale.
The USS-DBS91 Bench Scale is precise and reliable. It offers a high level
of operating convenience and response sensitivity to facilitate
determination of the weight of your samples. 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-DBS91 Bench Scale.
1.1 Safety Precautions
The U.S. Solid USS-DBS91 Bench Scale 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
the precautions below to ensure safe and trouble-free operation of your
scale.
•The scale has a 3-pin power socket equipped with a
ground terminal. To prevent electric shock and to maintain

2
stability in operation of the scale, be sure to ground the scale.
•Avoid getting the scale wet as it is not water resistant. Any leakage of
liquid into the scale may damage the scale or cause an electric shock to
the user.
•Use a power source (voltage, frequency, outlet type)
adapted to the specification of the scale. If excessive voltage
is used, the scale may overheat and be damaged or cause a fire.
•Operate the scale on a stable, rigid and flat table.
•Handle the scale 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 scale's range, as this may damage
the load cell of the scale.

3
Design and Function
2.1 Components
1: Weighing Pan 4: RS232 Interface 7: Power Inlet
2: Display Panel 5: Leveling Indicator 8: Power Switch
3: Keyboard 6: Leveling Feet

4
2.2 Keyboard
Key
Description
Enter the counting function
Select the option in the setting of baud rate
Tare or zero the scale
Perform the baud rate set while powering on
Switch the option in counting mode
Switch the weighing unit
Perform weight calibration

5
2.3 Display Panel
No.
Description
1
“+”: Indicates positive values
“-”: Indicates negative values
“○”: Stabilization indicator (Disappearance indicates
stabilization of scale)
2
Weight value
3
Weight unit
4
Remaining capacity of the battery

6
Unpacking
The USS-DBS91 Bench Scale is a precision instrument. Unpack the scale
carefully and check the delivered items for completeness.
The following accessories are part of the standard equipment for your
new USS-DBS91 Bench Scale:
·1 Scale Main Body
·1 Weighing Pan (rectangular)
·1 Power Cable
·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 bench scale until the air bubble in the
indicator is centered.
·Warm up for 30 minutes after starting up to improve the stability of
weighing.
4.1 Leveling the scale
Accurate horizontal positioning is 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 bench scale until the air bubble in the
indicator is centered. The level indicator is located under the cover
towards the rear of the bench scale.

8
Position of air bubble
Adjustment method
up
Turn both feet clockwise
down
Turn both feet counterclockwise
Left
Turn left foot counterclockwise, right foot
clockwise
Right
Turn left foot clockwise, right foot
counterclockwise