Introducció
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.
Informació de seguretat
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.
- Eviteu exposar la bàscula a temperatures extremes, humitat o llum solar directa.
- Mantingueu la bàscula allunyada de camps electromagnètics forts.
- Do not disassemble or attempt to repair the scale yourself. Refer to qualified service personnel.
- Netegeu la bàscula amb un suau, damp drap. No utilitzeu productes de neteja abrasius ni submergiu la unitat en aigua.
Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- A&D HT-300 Compact Scale Unit
- Manual d'instruccions (aquest document)
- Clear Carry-Case
- AC Adaptor (optional, may be sold separately)
Producte acabatview

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.
Característiques principals:
- Plat de pesatge d'acer inoxidable
- 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
Configuració
- Desembalatge: Traieu amb cura la bàscula i tots els accessoris de l'embalatge.
- Col·locació: Place the scale on a firm, level, and vibration-free surface. Ensure it is away from direct sunlight, drafts, and heat sources.
- Font d'alimentació:
- Funcionament amb bateria: 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.
- Encesa inicial: Premeu el botó ON/OFF button to turn on the scale. The display will show "88888" then "0.0g" (or the last used unit) when ready.
Instruccions de funcionament
1. Encendre/apagar
- Per encendre: premeu la tecla ON/OFF botó.
- Per apagar: premeu i manteniu premut el botó ON/OFF button until the display turns off. The scale also features an auto-off function to conserve power.
2. Pesatge bàsic
- Ensure the scale is on a stable surface and displays "0.0g".
- Col·loqueu suaument l'element que s'ha de pesar al centre del plat de pesatge.
- Wait for the reading to stabilize. The "STABLE" indicator will appear on the display.
- Read the weight displayed on the LCD.
3. Tare Function (Zeroing a Container)
La funció de tara permet restar el pes d'un recipient, de manera que només es mesura el pes net del contingut.
- Place the empty container on the weighing pan. The display will show its weight.
- Premeu el botó →0/T← (RE-ZERO) button. The display will return to "0.0g" and the "NET" indicator will appear.
- Afegiu els articles que voleu pesar al contenidor. La pantalla mostrarà el pes net dels articles.
- To clear the tare, remove the container from the pan and press the →0/T← botó de nou.
4. Changing Units of Measure
The HT-300 supports multiple units of measure (g, oz, lb-oz, ozt, N).
- Amb la bàscula posada, premeu el botó MANTENIM button repeatedly to cycle through the available units.
- Stop pressing when your desired unit is displayed.
5. Funció Hold
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 MANTENIM 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 MANTENIM botó de nou.
Manteniment
Neteja:
- Netegeu la superfície de l'escala amb un drap suau i lleugeramentamp tela.
- 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.
Emmagatzematge:
- When not in use for extended periods, store the scale in its clear carry-case to protect it from dust and damage.
- Emmagatzemar en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
- If using batteries, remove them if the scale will not be used for a long time to prevent leakage.
Resolució de problemes
| Problema | Causa possible | Solució |
|---|---|---|
| L'escala no s'encén. | Low or dead batteries; AC adaptor not connected properly. | Replace batteries; check AC adaptor connection. |
| Lectures inexactes. | 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". | Error de sobrecàrrega. | Traieu l'article immediatament. No supereu la capacitat màxima. |
| La pantalla mostra "Lo". | Indicador de bateria baixa. | Substituïu les piles. |
| 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.
Especificacions
| Característica | Detall |
|---|---|
| Número de model | HT-300 |
| Capacitat màxima | 310 g |
| Llegibilitat (d) | 0.1 g |
| Unitats de mesura | g, oz, lb-oz, ozt, N |
| Tipus de visualització | LCD amb llum de fons |
| Material del plat de pesatge | Acer inoxidable |
| Font d'alimentació | Batteries (not specified in input, assuming common types like AA/AAA) or Optional AC Adaptor |
| Dimensions del producte | 7.68 x 5.35 x 1.85 polzades |
| Pes del producte | 1.21 lliures |
| Característiques especials | Backlit Display, Multiple Weighing Units, Auto Shut Off, Stable/Net/Zero indicators |
Garantia i Suport
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 weblloc: www.andweighing.com