Introdución
This user manual provides comprehensive instructions for the safe and efficient operation, maintenance, and troubleshooting of your A&D HT Series Compact Scale, model HT-300. Please read this manual thoroughly before using the scale to ensure proper functionality and to prevent damage.
Información de seguridade
Always observe the following safety precautions to ensure safe operation and to prevent damage to the scale or injury to the user:
- Do not overload the scale beyond its maximum capacity (310 g for HT-300).
- Use the scale on a stable, level surface to ensure accurate readings.
- Evite expoñer a báscula a temperaturas extremas, humidade ou luz solar directa.
- Manteña a báscula lonxe de campos electromagnéticos fortes.
- Do not disassemble or attempt to repair the scale yourself. Refer to qualified service personnel.
- Limpar a báscula cun suave, damp pano. Non empregue produtos de limpeza abrasivos nin mergulle a unidade en auga.
Contido do paquete
Verifica que todos os elementos estean presentes no paquete:
- A&D HT-300 Compact Scale Unit
- Manual de instrucións (este documento)
- Clear Carry-Case
- AC Adaptor (optional, may be sold separately)
Produto rematadoview

Figure 1: A&D HT-300 Compact Scale. This image shows the top view of the scale, highlighting the weighing pan, the LCD display, and the control buttons for power, hold, and re-zero/tare functions.
The A&D HT-300 Compact Scale is designed for precise weighing in various environments, including schools, laboratories, and for weighing small items like jewelry. It features a stainless steel pan, a backlit LCD display, and multiple units of measure.
Características principais:
- Stainless Steel Weighing Pan
- Backlit LCD Display for clear readings
- Multiple Units of Measure (g, oz, lb-oz, ozt, N)
- Stable, Net, and Zero Indicators
- AC Adaptor Option for continuous power
- Clear Carry-Case for portability and protection
Configuración
- Desembalaxe: Retire con coidado a báscula e todos os accesorios da embalaxe.
- Colocación: Place the scale on a firm, level, and vibration-free surface. Ensure it is away from direct sunlight, drafts, and heat sources.
- Fonte de alimentación:
- Funcionamento da batería: Open the battery compartment on the underside of the scale and insert the required batteries (check battery type and polarity).
- AC Adaptor (Optional): If using the AC adaptor, plug it into the scale's power input jack and then into a suitable wall outlet.
- Encendido inicial: Preme o ON/OFF button to turn on the scale. The display will show "88888" then "0.0g" (or the last used unit) when ready.
Instrucións de funcionamento
1. Acendido/apagado
- Para activar: Prema o botón ON/OFF botón.
- Para apagar: Manteña premido o botón ON/OFF button until the display turns off. The scale also features an auto-off function to conserve power.
2. Pesaxe básica
- Ensure the scale is on a stable surface and displays "0.0g".
- Gently place the item to be weighed on the center of the weighing pan.
- Wait for the reading to stabilize. The "STABLE" indicator will appear on the display.
- Lea o peso que se mostra na pantalla LCD.
3. Tare Function (Zeroing a Container)
The tare function allows you to subtract the weight of a container, so only the net weight of the contents is measured.
- Place the empty container on the weighing pan. The display will show its weight.
- Preme o →0/T← (RE-ZERO) button. The display will return to "0.0g" and the "NET" indicator will appear.
- Engada os artigos que se van pesar no recipiente. A pantalla mostrará o peso neto dos artigos.
- To clear the tare, remove the container from the pan and press the →0/T← botón de novo.
4. Changing Units of Measure
The HT-300 supports multiple units of measure (g, oz, lb-oz, ozt, N).
- Coa báscula posta, prema o botón ATENCIÓN button repeatedly to cycle through the available units.
- Stop pressing when your desired unit is displayed.
5. Función de retención
The hold function allows you to temporarily freeze the displayed weight, even after the item is removed from the pan.
- While an item is on the pan and the weight is stable, press and hold the ATENCIÓN button for a few seconds. The display will show "HOLD" or a similar indicator.
- The weight will remain displayed even if the item is removed.
- To release the hold, press the ATENCIÓN botón de novo.
Mantemento
Limpeza:
- Limpe a superficie da báscula cun pano suave e lixeiramenteamp pano.
- For stubborn stains, use a mild detergent. Avoid harsh chemicals, abrasive cleaners, or solvents.
- Ensure no liquid enters the interior of the scale.
- The stainless steel pan can be removed for more thorough cleaning if necessary.
Almacenamento:
- When not in use for extended periods, store the scale in its clear carry-case to protect it from dust and damage.
- Almacenar nun lugar fresco e seco, lonxe da luz solar directa e de temperaturas extremas.
- If using batteries, remove them if the scale will not be used for a long time to prevent leakage.
Resolución de problemas
| Problema | Causa posible | Solución |
|---|---|---|
| A escala non se acende. | Low or dead batteries; AC adaptor not connected properly. | Replace batteries; check AC adaptor connection. |
| Lecturas inexactas. | Scale not on a level surface; vibrations; air currents; overloaded. | Place on stable, level surface; avoid drafts; do not exceed capacity. |
| Display shows "EEEE" or "O-Err". | Erro de sobrecarga. | Remove item immediately. Do not exceed maximum capacity. |
| A pantalla mostra "Lo". | Indicador de batería baixa. | Substitúe as pilas. |
| Scale does not zero. | Something on the pan; scale not stable. | Remove all items from pan; ensure scale is stable. |
If the problem persists after attempting the solutions above, please contact A&D customer support for assistance.
Especificacións
| Característica | Detalle |
|---|---|
| Número de modelo | HT-300 |
| Capacidade máxima | 310 g |
| Lexibilidade (d) | 0.1 g |
| Unidades de medida | g, oz, lb-oz, ozt, N |
| Tipo de visualización | LCD con retroiluminación |
| Material do prato de pesaxe | Aceiro inoxidable |
| Fonte de enerxía | Batteries (not specified in input, assuming common types like AA/AAA) or Optional AC Adaptor |
| Dimensións do produto | 7.68 x 5.35 x 1.85 polgadas |
| Peso do produto | 1.21 libras |
| Características especiais | Backlit Display, Multiple Weighing Units, Auto Shut Off, Stable/Net/Zero indicators |
Garantía e Soporte
A&D Company, Ltd. provides a limited warranty for this product against defects in materials and workmanship. The specific terms and duration of the warranty may vary by region and purchase date. Please retain your proof of purchase for warranty claims.
For technical support, service, or warranty inquiries, please contact A&D customer service through their official website or the contact information provided with your product packaging. When contacting support, please have your model number (HT-300) and purchase details ready.
For more information, visit the official A&D websitio: www.andweighing.com





