A&D HT-300
A&D HT Series Compact Scale User Manual
Model: HT-300
Rhagymadrodd
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.
Gwybodaeth Diogelwch
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.
- Avoid exposing the scale to extreme temperatures, humidity, or direct sunlight.
- Cadwch y raddfa i ffwrdd o feysydd electromagnetig cryf.
- Do not disassemble or attempt to repair the scale yourself. Refer to qualified service personnel.
- Glanhewch y raddfa gyda meddal, damp lliain. Peidiwch â defnyddio glanhawyr sgraffiniol na throchi'r uned mewn dŵr.
Cynnwys Pecyn
Gwiriwch fod yr holl eitemau yn bresennol yn y pecyn:
- A&D HT-300 Compact Scale Unit
- Llawlyfr Cyfarwyddiadau (y ddogfen hon)
- Clear Carry-Case
- AC Adaptor (optional, may be sold separately)
Cynnyrch Drosview

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.
Nodweddion Allweddol:
- 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
Gosod
- Dadbacio: Carefully remove the scale and all accessories from the packaging.
- Lleoliad: Place the scale on a firm, level, and vibration-free surface. Ensure it is away from direct sunlight, drafts, and heat sources.
- Cyflenwad Pŵer:
- Gweithrediad batri: 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.
- Pŵer Cychwynnol Ar: Gwasgwch y YMLAEN / I FFWRDD button to turn on the scale. The display will show "88888" then "0.0g" (or the last used unit) when ready.
Cyfarwyddiadau Gweithredu
1. Pŵer Ymlaen / I ffwrdd
- I droi ymlaen: Pwyswch y YMLAEN / I FFWRDD botwm.
- I ddiffodd: Pwyswch a daliwch y YMLAEN / I FFWRDD button until the display turns off. The scale also features an auto-off function to conserve power.
2. Pwyso Sylfaenol
- 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.
- 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.
- Place the empty container on the weighing pan. The display will show its weight.
- Gwasgwch y →0/T← (RE-ZERO) button. The display will return to "0.0g" and the "NET" indicator will appear.
- Add the items to be weighed into the container. The display will show the net weight of the items.
- To clear the tare, remove the container from the pan and press the →0/T← botwm eto.
4. Newid Unedau Mesur
The HT-300 supports multiple units of measure (g, oz, lb-oz, ozt, N).
- Gyda'r raddfa ymlaen, pwyswch y DALWCH button repeatedly to cycle through the available units.
- Stopiwch wasgu pan fydd eich uned ddymunol yn cael ei harddangos.
5. Swyddogaeth Dal
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 DALWCH 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 DALWCH botwm eto.
Cynnal a chadw
Glanhau:
- Wipe the scale surface with a soft, slightly damp brethyn.
- 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.
Storio:
- When not in use for extended periods, store the scale in its clear carry-case to protect it from dust and damage.
- Storiwch mewn lle oer, sych, i ffwrdd o olau haul uniongyrchol a thymheredd eithafol.
- If using batteries, remove them if the scale will not be used for a long time to prevent leakage.
Datrys problemau
| Problem | Achos Posibl | Ateb |
|---|---|---|
| Nid yw graddfa yn troi ymlaen. | Low or dead batteries; AC adaptor not connected properly. | Replace batteries; check AC adaptor connection. |
| Darlleniadau anghywir. | 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". | Gwall gorlwytho. | Remove item immediately. Do not exceed maximum capacity. |
| Mae'r arddangosfa'n dangos "Lo". | Dangosydd batri isel. | Amnewid batris. |
| 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.
Manylebau
| Nodwedd | Manylyn |
|---|---|
| Rhif Model | HT-300 |
| Cynhwysedd Uchaf | 310 g |
| Darllenadwyedd (d) | 0.1 g |
| Unedau Mesur | g, oz, lb-oz, ozt, N |
| Math Arddangos | LCD gyda Backlight |
| Deunydd Padell Pwyso | Dur Di-staen |
| Ffynhonnell Pwer | Batteries (not specified in input, assuming common types like AA/AAA) or Optional AC Adaptor |
| Dimensiynau Cynnyrch | 7.68 x 5.35 x 1.85 modfedd |
| Pwysau Cynnyrch | 1.21 Bunt |
| Nodweddion Arbennig | Backlit Display, Multiple Weighing Units, Auto Shut Off, Stable/Net/Zero indicators |
Gwarant a Chefnogaeth
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 websafle: www.andweighing.com
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