1. Introduction Thank you for choosing the U.S. Solid USS-DBS49 Electronic Analytical Balance. The U.S. Solid USS-DBS49 Electronic Analytical Balance is precise and reliable. It provides a high level of operating convenience and response sensitivity to facilitate determination of the weight of your samples. U.S.
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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. •...
2. Design and Function 2.1 Components 1: Weighing chamber 5: Glass door 2: Weighing pan 6: Handle of glass door 3: Anti-draft ring 7: Balance main body 4: Display panel 8: Leveling foot...
2.2 Display panel 2.2.1 Home page Description Measuring result area Weight value Weight unit Indicates positive or negative values Operating buttons area Execute internal calibration Print measuring result Enter the menu page Zero the value when in the no-load state Tare the balance...
Switch the weight unit Settings display area Display speed currently selected Stability currently selected Automatic internal calibration mode currently selected Indicates the current test mode Other area Time and date 2.2.2 Menu...
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No. Display Name Description Speed Adjust the display speed of the balance Stability Adjust the stability of the balance Printer Printer Settings Weight calibration, including automatic Calibration internal calibration external calibration System Set time and date, perform touch Setting calibration and restore factory defaults Test mode selection, including weighing, Mode counting and percent weighing...
· 1 Power Cable · 1 200g Calibration Weight · 1 Glove · 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.
3.2 Selecting the location Measurement performance of your balance depends largely on the surrounding environments. Please follow these guidelines to make sure the proper environmental conditions are met: • Select a firm, horizontal location that is free from vibrations. • Make sure that the ambient temperature is between 5°C and 30°C, the relative humidity is around 50% and that non-condensing conditions are met.
3.3 Installing components 1. Place the balance main body on the installing location. 2. Push the side glass door open. 3. Gently attach the pan on the center axis of the weighing chamber. 4. Push the side glass door close. 3.4 Leveling the balance Accurate horizontal positioning necessary for repeatable measurements and exact results.
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Position of air bubble Adjustment method Turn both feet clockwise down Turn both feet counterclockwise Turn left foot counterclockwise, right foot Left clockwise Turn left foot clockwise, right foot Right counterclockwise...
3.5 Connecting the power Warning: • To prevent electric shock, be sure to use the 3-pin power cord with equipment grounding connector. • Check to make sure the voltage indicated on the analytical balance data label matches the local line voltage. Do not connect the balance to the power source if it does not match.
4. Settings and Calibration 4.1 Display speed If the operating environment meets the requirements, the display speed of the balance can be adjusted to reduce the time required for the balance to stabilize, thereby improving work efficiency. Icons Description Slow Normal Fast Depending on the environment in which the instrument is used,...
2. Select required speed and confirm by tapping “CONFIRM”. 4.2 Stability According to different operating environments, the balance is kept in a relatively stable state by adjusting its stability. It is recommended that the balance be adjusted appropriately in an environment that guarantees its normal operation.
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. The USS-DBS49 Analytical Balance offers three calibration methods.
4.3.1 Internal calibration Install the balance as instructed and ensure it is sufficiently warmed-up. When the balance is in the no-load state: 1. Tap “CAL” on the home page, “CAL-Int” will be flashing displayed. 2. Then “------” will be displayed and the balance starts automatic internal calibration.
3. After the calibration is completed, the instrument returns to the weighing state and displays “0.0000g”. 4.3.2 Automatic internal calibration The USS-DBS49 Analytical Balance offers four kinds of automatic internal calibration time mode to choose from: “10mins Internal Cal” “30mins Internal Cal” “60mins Internal Cal” and “Internal Cal Off”. Respectively,...
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Icons Description 10 minutes 30 minutes 60 minutes Procedure: 1. Zero the balance in the weighing state by tapping “ZERO”. 2. Tap “MENU” to enter the menu page. 3. Tap the “CALIBRATION” icon to enter the calibration mode selection. 4. Tap “Internal Calibration” to enter the time mode selection. 5.
4.3.3 External calibration The balance must be fully warmed up for one hour to stabilize the weighing before calibration. Procedure: 1. Zero the balance in the weighing state by tapping “ZERO”. 2. Tap “MENU” to enter the menu page. 3. Tap “CALIBRATION” icon to enter the calibration mode selection. 4.
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7. Then “Please take away the weight” will be displayed and return to the home page. External calibration is completed.
5. Weighing and Applications 5.1 Weighing Note: Please warm up for at least one hour and calibrate before using. 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.
5.1.1 Unit of weight The USS-DBS49 Analytical Balance has multiple sets of weight units. The unit selection function can be used to meet the unit requirements in various usage situations. Tap “CONVERSION” on the home page to perform unit conversion: The balance includes four weighing units, including grams, milligrams, carat and ounces (g, mg, ct, and oz).
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1. Tap the “Counting” icon on the “MODE” submenu page. 2. Tap on “Sample Quantity” in the top left corner to select the quantity of reference pieces. 3. Tap on “0.0000g” on the right of “Single weight”, then put the reference pieces of the corresponding quantities on the weighing pan.
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4. After the value is displayed stably, tap on it again to save the result. 5. Tap on “0.0000g” on the right of “Total weight”, and place the pieces to be counted on the weighing pan. 6. Tap on the value again after it is displayed stably to save the result. 7.
5.3 Percent weighing The USS-DBS49 Analytical Balance has a percent weighing function. 1. Tap the “Percentage” icon on the “MODE” submenu page.
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2. Tap on “0.0000g” on the right of “Weight 1”, then put the reference sample on the weighing pan. 3. After the value is displayed stably, tap on it again to save the result. 4. Tap on “0.0000g” on the right of “Weight 2”, and place the sample on the weighing pan.
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5. Tap on the value again after it is displayed stably to save the result. 6. Tap on “0.00%” on the right of “Percentage” and the result will be displayed.
6. System settings Display the system setting submenu to select each setting. 6.1 Time and Date 1. Tap “Time/Date” in the system setting submenu. 2. Tap on one of the components (year, month, day, hour, minute, second), then use the arrows directly below it to select the desired number.
6.3 Restore factory defaults If the balance is improperly set or operated, all settings can be restored to factory defaults, which will ensure that the balance is suitable for most operating habits and environments. When the balance is found to be abnormal and unstable, the stability of the balance can also be adjusted by restoring the factory settings.
7. Maintenance 7.1 Precautions The U.S. Solid USS-DBS49 Analytical Balance is a precision mechatronics intelligent measuring instrument, which must be carefully maintained and treated. 1. Do not use sharp objects (such as pens) to click the button, use only your fingers.
7.2 Cleaning • Turn off the power switch and remove power cord during maintenance. • Make sure that no dust or liquid enters the balance housing. • Do not use any aggressive cleaning agents (solvents, abrasive cleaning agents, etc.) or organic solvents to clean the balance. Clean the balance using a piece of lint-free cloth which has been wet with a mild detergent (soap) only.
8. Troubleshooting 8.1 Troubleshooting Problem: Display remains off after switching on. Possible causes: Power cord is not connected • Power line fuse blown • Power transformer damaged • Instrument faulty • Problem: Weight display is constantly changing or unstable. Possible causes: •...
9. Technical Data Model USS-DBS49 Capacity 220 g Readability 0.0001g (0.1mg) Repeatability ±0.0002g Linearity deviation ±0.0003g Stabilization time Within 3 seconds Operating temperature 63.5℉- 72.5℉(17.5℃ - 22.5℃) Display panel type Touch screen Pan size Φ80mm Interface RS232 Power 110V 60Hz AC Dimensions 340×215×350 mm...
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Contact Feel free to visit our website: www.ussolid.com You can email us at service@ussolid.com You can call one of our friendly customer service representative at +1(800) 209-4177...
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