Introduction
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.
Consignes de sécurité
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.
- Évitez d'exposer la balance à des températures extrêmes, à l'humidité ou à la lumière directe du soleil.
- Tenir la balance à l'écart des champs électromagnétiques puissants.
- Do not disassemble or attempt to repair the scale yourself. Refer to qualified service personnel.
- Nettoyez la balance avec un chiffon doux, damp Chiffon. N’utilisez pas de nettoyants abrasifs et n’immergez pas l’appareil dans l’eau.
Contenu du colis
Vérifiez que tous les éléments sont présents dans le colis :
- A&D HT-300 Compact Scale Unit
- Manuel d'instructions (ce document)
- Clear Carry-Case
- AC Adaptor (optional, may be sold separately)
Produit terminéview

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.
Caractéristiques principales :
- Plateau de pesée en acier inoxydable
- 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
Installation
- Déballage: Retirez soigneusement la balance et tous les accessoires de leur emballage.
- Placement: Place the scale on a firm, level, and vibration-free surface. Ensure it is away from direct sunlight, drafts, and heat sources.
- Alimentation:
- Fonctionnement sur batterie : 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.
- Mise sous tension initiale : Appuyez sur le MARCHE/ARRÊT button to turn on the scale. The display will show "88888" then "0.0g" (or the last used unit) when ready.
Mode d'emploi
1. Marche/Arrêt
- Pour allumer : Appuyez sur le MARCHE/ARRÊT bouton.
- Pour éteindre : Appuyez et maintenez le bouton enfoncé MARCHE/ARRÊT button until the display turns off. The scale also features an auto-off function to conserve power.
2. Pesage de base
- Ensure the scale is on a stable surface and displays "0.0g".
- Déposez délicatement l'objet à peser au centre du plateau de pesée.
- 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)
The tare function allows you to subtract the weight of a container, so only the net weight of the contents is measured.
- Placez le récipient vide sur le plateau de pesée. L'écran affichera son poids.
- Appuyez sur le →0/T← (RE-ZERO) button. The display will return to "0.0g" and the "NET" indicator will appear.
- Ajoutez les articles à peser dans le récipient. L'écran affichera le poids net des articles.
- To clear the tare, remove the container from the pan and press the →0/T← Appuyez à nouveau sur le bouton.
4. Changing Units of Measure
The HT-300 supports multiple units of measure (g, oz, lb-oz, ozt, N).
- Avec la balance allumée, appuyez sur PRISE button repeatedly to cycle through the available units.
- Stop pressing when your desired unit is displayed.
5. Fonction de maintien
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 PRISE 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 PRISE Appuyez à nouveau sur le bouton.
Entretien
Nettoyage:
- Essuyez la surface du tartre avec un chiffon doux, légèrement huilé.amp tissu.
- For stubborn stains, use a mild detergent. Avoid harsh chemicals, abrasive cleaners, or solvents.
- Veillez à ce qu'aucun liquide ne pénètre à l'intérieur de la balance.
- The stainless steel pan can be removed for more thorough cleaning if necessary.
Stockage:
- When not in use for extended periods, store the scale in its clear carry-case to protect it from dust and damage.
- Conserver dans un endroit frais et sec, à l'abri de la lumière directe du soleil et des températures extrêmes.
- If using batteries, remove them if the scale will not be used for a long time to prevent leakage.
Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| La balance ne s'allume pas. | 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". | Erreur de surcharge. | Remove item immediately. Do not exceed maximum capacity. |
| L'écran affiche « Lo ». | Indicateur de batterie faible. | Remplacer 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.
Caractéristiques
| Fonctionnalité | Détail |
|---|---|
| Numéro de modèle | HT-300 |
| Capacité maximale | 310 g |
| Lisibilité (d) | 0.1 g |
| Unités de mesure | g, oz, lb-oz, ozt, N |
| Type d'affichage | LCD avec rétroéclairage |
| Matériau du plateau de pesée | Acier inoxydable |
| Source d'énergie | Batteries (not specified in input, assuming common types like AA/AAA) or Optional AC Adaptor |
| Dimensions du produit | 7.68 x 5.35 x 1.85 pouces |
| Poids du produit | 1.21 livres |
| Caractéristiques spéciales | Backlit Display, Multiple Weighing Units, Auto Shut Off, Stable/Net/Zero indicators |
Garantie et assistance
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 website: www.andweighing.com





