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Topcon AT-B2 User Manual

Topcon AT-B2
33 pages
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AT-B2/B3/B4
自動レベル /AUTOMATIC LEVEL
取扱説明書 /INSTRUCTION MANUAL
FC10386-A011-01

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Topcon AT-B2 Specifications

General IconGeneral
TypeAutomatic Level
Magnification32x
Objective Aperture42 mm
Field of View1°20'
Minimum Focusing Distance0.3 m
Compensating Range±15'
Setting Accuracy±0.3"
Horizontal CircleYes
Horizontal Circle Graduation1° or 1 gon
Water ResistanceIPX6
Circular Level Sensitivity10'/2 mm
Shortest Focusing Distance0.3 m
Stadia Multiplication Constant100
Stadia Addition Constant0
Operating Temperature-20°C to +50°C
Compensator TypePendulum compensator with magnetic damping system
Weight1.85 kg (4.1 lbs)

Summary

PRECAUTIONS FOR SAFE OPERATION

GENERAL SAFETY PRECAUTIONS

General safety precautions for instrument use, carrying case, and general handling.

TRIPOD SAFETY GUIDELINES

Safety measures for tripod setup, leg securing, and carrying to prevent injury.

STAFF SAFETY MEASURES

Safety advice for staff usage, especially regarding conductivity and lightning.

GENERAL PRECAUTIONS AND MAINTENANCE

INSTRUMENT HANDLING AND CARE

Precautions for handling the precision instrument, avoiding shocks, and proper storage.

ROUTINE MAINTENANCE AND CLEANING

Instructions for wiping moisture, cleaning the lens, and general cleaning of the unit.

MANUFACTURER RESPONSIBILITY DISCLAIMER

Disclaimer regarding product misuse, natural disasters, data loss, and unauthorized modifications.

AT-B2/B3/B4 INSTRUMENT FEATURES

IDENTIFICATION OF INSTRUMENT PARTS

PRELIMINARIES FOR USE

SETTING UP THE AUTOMATIC LEVEL

Step-by-step instructions for setting up the tripod and initially leveling the instrument.

FOCUSING AND SIGHTING PROCEDURES

Guide on how to focus the eyepiece, sight targets, and check for parallax.

OPERATIONAL PROCEDURES

MEASURING HEIGHT DIFFERENCES

Method for calculating height differences between two points using backsight and foresight readings.

MEASURING HORIZONTAL ANGLES

Steps to set the horizontal circle to zero and measure angles between points.

DISTANCE MEASUREMENT USING STADIA LINES

How to use the reticle's stadia lines to determine the horizontal distance to a staff.

CHECKS AND ADJUSTMENTS

CIRCULAR LEVEL CALIBRATION

Procedure for adjusting the circular level to ensure the bubble is centered.

AUTOMATIC COMPENSATOR FUNCTION TEST

Method to verify the proper operation of the automatic compensator mechanism.

RETICLE CROSS-LINE ALIGNMENT

Steps to check and adjust the instrument's reticle cross-line for accurate sighting.

STANDARD EQUIPMENT LIST

OPTIONAL ACCESSORIES

ILLUMINATION PACK LA8 (AT-B2)

Optional accessory for improving visibility in low light conditions.

OPTICAL MICROMETER OM5 (AT-B2)

Optional accessory for high precision leveling measurements.

DIAGONAL EYEPIECE DE16/DE22

Optional accessory for viewing in restricted or difficult positions.

REMOVABLE EYEPIECE EL5 (AT-B2)

Optional accessory to increase magnification from 32X to 40X.

TECHNICAL SPECIFICATIONS

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