1. Introducció
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. Precaucions de seguretat
- 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. Què hi ha a la caixa
Carefully unpack all components and check against the following list:
- Scale Body x1
- Scale Pan x1
- Cable d'alimentació x1
- Calibration Weight x1
- Manual d'instruccions x1
4. Producte acabatview
Familiarize yourself with the main components of your analytical balance.





5. Configuració
5.1 Desembalatge i inspecció 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 Col·locació
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 Leveling the Balance
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 Connexió d'alimentació
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 Temps d'escalfament
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. Instruccions de funcionament
6.1 Encès/Apagat
- Premeu el botó ON/OFF button to turn the balance on.
- Manteniu premut el botó ON/OFF button to turn the balance off.
6.2 Pesatge bàsic
To perform a basic weight measurement:
- Ensure the balance is level and has completed its warm-up.
- Premeu el botó TARA / ZERO button to set the display to 0.000g.
- Carefully place the item to be weighed on the center of the weighing pan.
- Wait for the reading to stabilize. The stable weight will be displayed.
Vídeo 6.1: Demonstration of basic weighing, unit conversion, and percentage function on the U.S. Solid Lab Analytical Balance.
6.3 Funció de tara
La funció de tara permet restar el pes d'un recipient, de manera que només es mesura el pes net del contingut.
- Col·loqueu un recipient buit al plat de pesatge.
- Premeu el botó TARA / ZERO 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 Conversió d'unitats
The balance supports multiple weighing units. To change the unit:
- Premeu el botó UNITAT 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 % (percentagi).
- La unitat seleccionada es mostrarà a la 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.
- Premeu el botó PCS botó.
- Select the corresponding sample quantity using the UNITAT botó.
- Premeu PCS again to confirm. The balance is now in counting mode.
- Add more items, and the display will show the total count.
6.6 per centtage Pesatge
El percentatgetage function is useful for formulation and quality control, allowing you to measure a sample's weight as a percentage d'un pes de referència.
- Col·loca la referència sample a la safata.
- Premeu el botó UNITAT button until '%' is displayed. The reference weight will be set as 100%.
- Elimina la referència sample.
- Place subsequent samples on the pan. Their weight will be displayed as a percentage del pes de referència.
6.7 Calibració
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.
- Manteniu premut el botó CAL fins que aparegui «CAL» a la pantalla.
- 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.
- Traieu el pes de calibratge.

7. Manteniment
7.1 Neteja
To maintain accuracy and prolong the life of your balance:
- Desconnecteu sempre l'alimentació abans de netejar.
- Wipe the exterior of the balance with a soft, damp tela. Utilitzeu un detergent suau si cal.
- 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 Emmagatzematge
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. Solució De Problemes
This section addresses common issues you might encounter with your analytical balance.
| Problema | Causa possible | Solució |
|---|---|---|
| Lectures inexactes o fluctuants |
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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. Especificacions
Technical specifications for the U.S. Solid 500g x 0.001g Lab Analytical Balance.
| Característica | Detall |
|---|---|
| Marca | Sòlid dels EUA |
| Número de model | USS-DBS64-500 |
| Límit de pes | 500 grams |
| Exactitud de lectura | 0.001 Grams (1mg) |
| Tipus de visualització | LCD (retroil·luminat) |
| Tipus de bàscula | Balanç d'equilibri |
| Unitats de mesura | g, ct, oz, ozt, lb, gn, t, dwt, kg, dr, tlT, N, % |
| Font d'alimentació | AC (100-240V) / DC (9V Battery) |
| Tipus de material | Acrilonitril butadiè estirè (ABS), acer inoxidable |
| Pes de l'article | 3.64 lliures |
| Components inclosos | Scale Body, Scale Pan, Power Cord, Calibration Weight, Manual |
10. Garantia i Suport
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 weblloc.
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 weblloc.