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Sokkia B20 User Manual

Sokkia B20
60 pages
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SURVEYING INSTRUMENTS
B20/B21
自動レベル
Automatic Level
取扱説明書
OPERATOR'S MANUAL
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Sokkia B20 Specifications

General IconGeneral
TypeAutomatic Level
Magnification32x
Objective Aperture42 mm
Compensator Range±15'
Stadia Multiplication Constant100
Stadia Addition Constant0
Circular Level Sensitivity10'/2 mm
Compensator TypeMagnetic Damping
Weight1.85 kg
Field of View at 100 m1°20'
Operating Temperature Range-20°C to +50°C
Water and Dust ProtectionIPX6
Dimensions (L x W x H)215 mm x 130 mm x 140 mm

Summary

Safety Precautions

Meaning of Indications

Explains the meaning of warning and caution symbols used in the manual.

General Safety Precautions

Tripod Safety Precautions

Staff Safety Precautions

Usage Guidelines

General Usage Instructions

Instructions for handling the precision instrument and its accessories carefully.

Maintenance Procedures

Steps for maintaining the instrument, including cleaning, checks, and part care.

Disclaimer of Liability

Details limitations of the manufacturer's responsibility for damages and misuse.

Product Features

Instrument Parts Identification

Measurement Preparation

Setting Up the Instrument

Step-by-step instructions for securely setting up the instrument on a tripod for use.

Sighting and Focusing

Procedure for sighting targets and achieving a clear, parallax-free focus.

Measurement Procedures

Measuring Height Difference

Method for determining the difference in elevation between two points using leveling techniques.

Measuring Horizontal Angle

Procedure for measuring horizontal angles using the instrument's graduated horizontal circle.

Measuring Distance with Stadia Lines

Using stadia lines on the reticle for approximate distance measurements.

Optional Accessories

Illumination Device LA8

Description and use of the optional illumination device for low-light measurement conditions.

Diagonal Eyepiece DE16/DE22

Information on attaching and using diagonal eyepieces for restricted viewing positions.

Optical Micrometer OM5

Details on the optical micrometer for high-precision leveling measurements.

Instrument Checks and Adjustments

Circular Level Adjustment

Procedure for checking and adjusting the circular level for accurate leveling.

Automatic Compensator Check

How to check the function and operation of the automatic compensator mechanism.

Reticle Cross-line Adjustment

Procedure for checking and adjusting the reticle cross-line for accurate sighting.

Technical Specifications

Standard Equipment and Packing

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