1. Introdución
This manual provides essential instructions for the proper setup, operation, maintenance, and troubleshooting of your U.S. Solid 500g x 0.001g Lab Analytical Balance. Designed for high-precision weighing, this balance offers reliable results with 0.001g (1mg) accuracy and a maximum capacity of 500g. It features multiple unit conversions, parts counting, percentage weighing, and manual calibration capabilities.
Please read this manual thoroughly before using the balance to ensure accurate measurements and safe operation.
2. Precaucións de seguridade
- Always operate the balance on a stable, level, and vibration-free surface.
- Avoid placing the balance near strong electromagnetic fields, direct sunlight, or rapid temperature changes.
- Do not overload the balance beyond its maximum capacity of 500g.
- Keep the balance and its components clean and free from dust and corrosive substances.
- Use only the provided power adapter or a compatible 9V battery.
- Do not attempt to disassemble or repair the balance yourself. Contact qualified service personnel if needed.
3. Que hai na caixa
Carefully unpack all components and check against the following list:
- Scale Body x1
- Scale Pan x1
- Cable de alimentación x1
- Calibration Weight x1
- Manual de instrucións x1
4. Produto rematadoview
Familiarize yourself with the main components of your analytical balance.





5. Configuración
5.1 Desembalaxe e inspección inicial
Carefully remove the balance from its packaging. Inspect all components for any signs of damage. If any damage is found, do not use the balance and contact customer support immediately.
5.2 Colocación
Place the balance on a firm, level, and stable surface. Ensure the location is free from vibrations, drafts, direct sunlight, and rapid temperature fluctuations, which can affect measurement accuracy.
5.3 Nivelación do equilibrio
The balance must be perfectly level for accurate readings. Use the adjustable feet at the bottom of the balance to center the bubble in the integrated level indicator (refer to Figure 4.4).

5.4 Conexión de alimentación
Connect the provided power cord to the balance and a suitable power outlet (100-240V). Alternatively, the balance can be powered by a 9V battery for portable use.
5.5 Warm-up Time
After connecting power, allow the balance to warm up for at least 30 minutes before taking measurements. This stabilizes the internal components and ensures optimal accuracy.
6. Instrucións de funcionamento
6.1 Encendido/apagado
- Preme o ON/OFF button to turn the balance on.
- Manteña premido o ON/OFF button to turn the balance off.
6.2 Pesaxe básica
To perform a basic weight measurement:
- Ensure the balance is level and has completed its warm-up.
- Preme o TARA / CERO botón para axustar a pantalla a 0.000 g.
- Carefully place the item to be weighed on the center of the weighing pan.
- Agarde a que a lectura se estabilice. Mostrarase o peso estable.
Vídeo 6.1: Demonstration of basic weighing, unit conversion, and percentage function on the U.S. Solid Lab Analytical Balance.
6.3 Función de tara
The tare function allows you to subtract the weight of a container, so only the net weight of the contents is measured.
- Coloque un recipiente baleiro na tixola.
- Preme o TARA / CERO button. The display will reset to 0.000g.
- Add the material to be weighed into the container. The display will show the net weight of the material.
6.4 Conversión de unidades
The balance supports multiple weighing units. To change the unit:
- Preme o UNIDADE button repeatedly to cycle through available units: g (grams), ct (carats), oz (ounces), ozt (troy ounces), lb (pounds), gn (grains), t (metric tons), dwt (pennyweights), kg (kilograms), dr (drams), tlT (Taiwan Tael), N (Newtons), and % (percentage).
- A unidade seleccionada mostrarase na pantalla.

6.5 Parts Counting (PCS)
This function allows you to count a large number of identical items by weight.
- Place a known quantity of items (e.g., 10, 20, 50, 100, 150, 200, 250, 500) on the pan.
- Preme o PCS botón.
- Select the corresponding sample quantity using the UNIDADE botón.
- Preme PCS again to confirm. The balance is now in counting mode.
- Add more items, and the display will show the total count.
6.6 Porcenttage Pesaxe
O porcenttage function is useful for formulation and quality control, allowing you to measure a sample's weight as a percentage dun peso de referencia.
- Coloca a referencia sample na balanza.
- Preme o UNIDADE button until '%' is displayed. The reference weight will be set as 100%.
- Elimina a referencia sample.
- Place subsequent samples on the pan. Their weight will be displayed as a percentage do peso de referencia.
6.7 Calibración
Regular calibration ensures the accuracy of your balance. It is recommended to calibrate the balance upon initial setup, after relocation, or if you suspect inaccurate readings.
- Ensure the weighing pan is empty and the balance is stable.
- Manteña premido o CAL button until 'CAL' appears on the display.
- The display will then show the required calibration weight (e.g., 500.000g).
- Carefully place the specified calibration weight (provided) onto the center of the weighing pan.
- Wait for the balance to automatically calibrate. Once complete, the display will show 'PASS' or return to normal weighing mode.
- Remove the calibration weight.

7. Mantemento
7.1 Limpeza
To maintain accuracy and prolong the life of your balance:
- Desconecte sempre a alimentación antes de limpar.
- Wipe the exterior of the balance with a soft, damp pano. Use un deterxente suave se é necesario.
- Do not use abrasive cleaners, solvents, or immerse the balance in water.
- Clean the stainless steel weighing pan and the windshield regularly to prevent accumulation of dust or residues.
7.2 Almacenamento
When not in use, store the balance in a clean, dry environment, away from extreme temperatures and humidity. Keep the windshield in place to protect the weighing mechanism.
8 Solución de problemas
This section addresses common issues you might encounter with your analytical balance.
| Problema | Causa posible | Solución |
|---|---|---|
| Lecturas inexactas ou fluctuantes |
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| Display shows 'Err' or other error codes | Internal fault or overload condition. |
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| Balance does not power on |
|
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| Cannot detect small weight changes (e.g., 10-15mg) |
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9. Especificacións
Technical specifications for the U.S. Solid 500g x 0.001g Lab Analytical Balance.
| Característica | Detalle |
|---|---|
| Marca | Sólido estadounidense |
| Número de modelo | USS-DBS64-500 |
| Límite de peso | 500 gramos |
| Precisión de lectura | 0.001 Grams (1mg) |
| Tipo de visualización | LCD (retroiluminado) |
| Tipo de báscula | Balanza de equilibrio |
| Unidades de medida | g, ct, oz, ozt, lb, gn, t, dwt, kg, dr, tlT, N, % |
| Fonte de alimentación | AC (100-240V) / DC (9V Battery) |
| Tipo de material | Acrilonitrilo butadieno estireno (ABS), aceiro inoxidable |
| Peso do elemento | 3.64 libras |
| Compoñentes incluídos | Scale Body, Scale Pan, Power Cord, Calibration Weight, Manual |
10. Garantía e soporte
U.S. Solid products are manufactured to high-quality standards. For information regarding product warranty, please refer to the warranty card included with your purchase or visit the official U.S. Solid websitio.
For technical support, troubleshooting assistance, or to inquire about replacement parts, please contact U.S. Solid customer service. Contact details can typically be found on the product packaging or the official brand websitio.