Topcon AT-B Series Automatic Level User Manual (24X Zoom)

1. はじめに

The Topcon AT-B Series Automatic Level is a precision optical instrument designed for accurate leveling in surveying, engineering, and construction applications. This manual provides essential information for the safe and effective use of your AT-B Series automatic level, ensuring optimal performance and longevity.

The AT-B Series features enhanced reliability under various environmental conditions, including an IPX6 rating for protection against powerful water jets. Its finely tuned magnetic damping system quickly stabilizes the line of sight, even in environments with fine vibrations.

2. 安全情報

怪我や機器の損傷を防ぐために、常に次の安全上の注意事項を守ってください。

目の保護: 望遠鏡で太陽を直接見ないでください。重大な目の損傷を引き起こす可能性があります。
取り扱い： Handle the instrument with care. Avoid dropping or subjecting it to strong impacts, which can affect its calibration and internal components.
三脚の安定性: Ensure the tripod is securely set on stable ground before mounting the level. An unstable tripod can cause the instrument to fall.
環境条件: While the instrument is IPX6 rated for water resistance, avoid prolonged exposure to extreme conditions or submerging it in water.
クリーニング： Use only recommended cleaning materials for lenses and surfaces to prevent scratches or damage.

3. パッケージ内容

パッケージにすべてのアイテムが揃っていることを確認します。

Topcon AT-B Series Automatic Level
Hard-Shell Carry Case
レンズのクリーニングクロス
レンチ
取扱説明書（本書）

4.製品オーバーview

The Topcon AT-B Series Automatic Level consists of several key components designed for precise measurement. Familiarize yourself with these parts before operation.

図1: Topcon AT-B Series Automatic Level. This image displays the compact and robust design of the automatic level, highlighting its main body, telescope, and base plate with leveling screws.

主要コンポーネント:

望遠鏡： For sighting targets and reading the staff. Features 24X magnification.
フォーカスノブ: 対象画像の鮮明度を調整します。
Circular Bubble (Spirit Level): 機器の大まかな水平出しに使用します。
Leveling Screws: Three screws on the base for fine leveling.
水平円: A graduated circle for measuring horizontal angles (360-Degree).
Sighting Guide: For quick initial alignment to the target.
補償器: An internal magnetic damping system that automatically levels the line of sight once the instrument is roughly leveled.

5. セットアップ

正確な測定には適切な設定が不可欠です。

5.1 Mounting the Instrument

Extend the tripod legs to a suitable height and ensure they are firmly planted on the ground.
Place the automatic level onto the tripod head.
Secure the instrument by tightening the tripod's mounting screw into the base of the level. Do not overtighten.

5.2 Rough Leveling

Adjust the length of the tripod legs until the circular bubble is approximately centered.
For finer adjustment, rotate the instrument so the telescope is parallel to two of the leveling screws.
Turn these two leveling screws simultaneously in opposite directions until the bubble moves to the center.
Rotate the instrument 90 degrees and use the third leveling screw to bring the bubble to the center.
Rotate the instrument 180 degrees to check the bubble's position. If it moves off-center, repeat the process.

6. 操作手順

Once the instrument is set up and leveled, you can begin taking measurements.

6.1望遠鏡の焦点を合わせる

Point the telescope towards a bright background (e.g., the sky).
Adjust the eyepiece until the reticle (crosshairs) is sharp and clear. This adjustment is personal and should be done each time a different operator uses the instrument.
Point the telescope towards the measuring staff.
Use the focus knob to bring the image of the staff into sharp focus. Ensure there is no parallax (apparent movement between the reticle and the staff image when moving your eye). The AT-B Series has a short focus capability of 1.6 feet (0.5 meters).

6.2読書をする

Use the sighting guide for quick initial alignment to the staff.
Look through the telescope and fine-tune the horizontal aiming using the tangent screw (if present) or by gently rotating the instrument.
Read the value on the staff where the horizontal crosshair intersects. The 24X magnification provides clear visibility for precise readings.
The instrument also features 1:100 Stadia lines, which can be used for approximate distance measurements.

6.3 Using the Horizontal Circle

The 360-Degree Horizontal Circle allows for measuring horizontal angles between points. Rotate the circle to set a zero reference or read the angle directly.

7. メンテナンス

Regular maintenance ensures the accuracy and longevity of your automatic level.

レンズのクリーニング: Use the provided lens cleaning cloth or a soft, lint-free cloth specifically designed for optical lenses. Breathe lightly on the lens to create condensation, then gently wipe. Avoid using harsh chemicals or abrasive materials.
本体のクリーニング: Wipe the instrument body with a soft, damp cloth. For stubborn dirt, a mild soap solution can be used, followed by a clean, damp 布。
ストレージ： Always store the instrument in its hard-shell carry case when not in use. Store in a dry, temperature-controlled environment, away from direct sunlight and extreme temperatures.
耐水性（IPX6）： While the AT-B Series is protected against powerful water jets, it is not designed for submersion. After exposure to water, wipe the instrument dry before storing it.
校正チェック: Periodically check the instrument's calibration (e.g., two-peg test) to ensure accuracy. If adjustments are needed, it is recommended to have them performed by a qualified service technician.

8。トラブルシューティング

一般的な問題とその解決策については、次の表を参照してください。

問題	考えられる原因	解決
画像がぼやけているか、焦点が合っていない。	Improper focus adjustment or eyepiece adjustment.	Adjust the eyepiece for reticle clarity, then use the main focus knob for the target image. Eliminate parallax.
Circular bubble not centered after rough leveling.	Tripod legs not adjusted correctly or ground is unstable.	Re-adjust tripod legs. Ensure tripod is on firm, stable ground. Repeat rough leveling steps.
Compensator appears stuck or not leveling.	Instrument not roughly leveled, or severe impact.	Ensure the circular bubble is centered. Gently tap the side of the instrument. If the issue persists, seek professional service.
読み取り結果が一貫していません。	Instrument not properly leveled, or calibration error.	Re-level the instrument carefully. Perform a calibration check (e.g., two-peg test). If out of calibration, professional service is required.

9. 仕様

Key technical specifications for the Topcon AT-B Series Automatic Level:

倍率： 24X
防水等級: IPX6（強力な噴流水から保護）
最小焦点距離： 1.6フィート（0.5メートル）
Damping システム: 磁気
水平円: 360度
Sighting Guide: 含まれるもの
Stadia Ratio: 1:100
おおよその範囲: 250フィート（76メートル）
動作モード: 自動
材料： プラスチック（ハウジング）
色：黄色

10. 保証情報

Topcon products are manufactured to high standards and are backed by a manufacturer's warranty. Please refer to the warranty card included with your product or visit the official Topcon website for detailed warranty terms and conditions, including coverage period and claim procedures. Keep your purchase receipt as proof of purchase.

11.サポートおよび連絡先情報

For technical assistance, service, or inquiries regarding your Topcon AT-B Series Automatic Level, please contact Topcon customer support or an authorized Topcon dealer. Contact information can typically be found on the official Topcon webサイトまたは製品に付属するドキュメントをご覧ください。