Topcon AT-B2, AT-B3, AT-B4 Instruction Manual
AT-B2/B3/B4
自動レベル /AUTOMATIC LEVEL
取扱説明書 /INSTRUCTION MANUAL
FC10386-A011-01
SURVEYING INSTRUMENTS
AT-B 2/B3/B 4
AUTOMATIC LEVEL
INSTRUCTION MANUAL
Thank you for selecting the AT-B2/B3/B4.
• Please read this instruction manual carefully
before using this product.
• Verify that all equipment is included.
C"8. STANDARD EQUIPMENT"
• The specifications and general appearance of
the instrument are subject to change without
prior notice and without obligation by Topcon
Corporation. and may differ from those appearing in this manual.
• The content of this manual is subject to change
without notice.
• Illustrations appearing in this manual are of
AT-B2 .
• Some of the diagrams shown in this manual may
be simplified for easier understanding.
CONTENTS
1. PRECAUTIONS FOR SAFE OPERATION ..... 1
2. PRECAUTIONS .............................................. 5
3. FEATURES OF AT-B2/B3/B4 ......................... 7
4. PARTS OF THE INSTRUMENT ...................... 8
5. PRELIMINARIES ............................................ 9
5.1 SETTING UP THE INSTRUMENT .................9
5.2 FOCUSSING AND SIGHTING ..................... 11
6. OPERATION ................................................. 13
6.1 MEASURING HEIGHT DIFFERENCE .........13
6.2 MEASURING HORIZONTAL ANGLE ..........15
6.3 MEASURING DISTANCE USING
THE STADIA LINES .....................................16
7. CHECKS AND ADJUSTMENTS ................... 17
7.1 CIRCULAR LEVEL .......................................17
7.2 AUTOMATIC COMPENSATOR ...................18
7.3 RETICLE CROSS-LINE (LINE OF SIGHT) ..19
8. STANDARD EQUIPMENT ............................ 21
9. OPTIONAL ACCESSORIES ......................... 23
10.SPECIFICATIONS .........................................27
ii
1. PRECAUTIONS FOR SAFE OPERATION
For the safe use of the product and prevention of injury
to operators and other persons as well as prevention of
property damage, items which should be observed are
indicated by an exclamation point within a triangle used
with WARNING and CAUTION statements in this
instruction manual.
The definitions of the indications are listed below. Be
sure you understand them before reading the manual's
main text.
Definition of Indication
Ignoring this indication and
C
WARNING
CAUTION
C
This symbol indicates items for which caution
(hazard warnings inclusive) is urged. Specific
J
details are printed in or near the symbol.
This symbol indicates items which are
prohibited. Specific details are printed in or
D
near the symbol.
This symbol indicates items which must
always be performed. Specific details are
I
printed in or near the symbol.
making an operation error
could possibly result in death or
serious injury to the operator.
Ignoring this indication and
making an operation error
could possibly result in minor
injury or property damage.
1
1. PRECAUTIONS FOR SAFE OPERATION
GENERAL
C
WARNING
Never look at the sun through the telescope.
D
Loss of eyesight could result.
Do not look at reflected sunlight from a prism
or other reflecting object through the
D
telescope. Loss of eyesight could result.
When securing the instrument in the carrying
case make sure that all catches, including the
side catches, are closed. Failure to do so could
E
result in the instrument falling out while being
carried, causing injury.
C
CAUTION
Do not use the carrying case as a footstool.
The case is slippery and unstable so a person
D
could slip and fall off it.
Do not place the instrument in a case with a
damaged catch or belt. The case or instrument
D
could be dropped and cause injury.
Do not wield or throw the plumb bob. A person
D
could be injured if struck.
2
1. PRECAUTIONS FOR SAFE OPERATION
TRIPOD
C
CAUTION
When mounting the instrument to the tripod,
tighten the centring screw securely. Failure to
E
tighten the screw properly could result in the
instrument falling off the tripod causing injury.
Tighten securely the leg fixing screws of the
tripod on which the instrument is mounted.
E
Failure to tighten the screws could result in the
tripod collapsing, causing injury.
Do not carry the tripod with the tripod shoes
pointed at other persons. A person could be
D
injured if struck by the tripod shoes.
Keep hands and feet away from the tripod
shoes when fixing the tripod in the ground. A
E
hand or foot stab wound could result.
Tighten the leg fixing screws securely before
carrying the tripod. Failure to tighten the
E
screws could lead to the tripod legs extending,
causing injury.
3
1. PRECAUTIONS FOR SAFE OPERATION
STAFF
C
WARNING
Do not use under thunderous weather
conditions. Staff is conductive and if struck by
D
lightning, death or injury could result.
Handle with care when using near high voltage
cables or transformers. Staff is conductive and
E
contact could result in electric shock.
4
2. PRECAUTIONS
GENERAL
• The AT-B2/B3/B4 is a precision instrument.
Handle with care and avoid heavy shocks and
vibration.
• Never place the instrument directly on the ground.
• When the instrument is left on the tripod, cap the
objective lens and cover the entire instrument with
the vinyl cover provided.
• When the instrument is placed in the case, store the
accessories in their specified places.
MAINTENANCE
• Wipe off moisture completely if the instrument gets
wet during survey work.
• Always clean the instrument before returning it to the
case. The lens requires special care. Dust it off with a
clean cloth first to remove tiny particles. Then, after
providing a little condensation by breathing on the
lens, wipe it with a soft clean cloth or lens tissue.
• To clean the instrument or carrying case, lightly
moisten a soft cloth in a mild detergent solution.
Wring out excess water until the cloth is slightly
damp, then carefully wipe the surface of the unit. Do
not use any organic solvents or alkaline cleaning
solutions.
• Check the tripod for loose fit and loose screws.
• If any trouble is found on the rotatable portion, screws
or optical parts (e.g. lens), contact your local dealer.
• Check the instrument for proper adjustment
periodically to maintain the instrument accuracy.
5
2. PRECAUTIONS
EXCEPTIONS FROM RESPONSIBILITY
• The user of this product is expected to follow all
operating instructions and make periodic checks
(hardware only) of the product's performance.
• The manufacturer, or its representatives, assumes no
responsibility for results of a faulty or intentional
usage or misuse including any direct, indirect,
consequential damage, and loss of profits.
• The manufacturer, or its representatives, assumes no
responsibility for consequential damage, and loss of
profits due to any natural disaster, (earthquake,
storms, floods etc.), fire, accident, or an act of a third
party and/or a usage under unusual conditions.
• The manufacturer, or its representatives, assumes no
responsibility for any damage, and loss of profits due
to a change of data, loss of data, an interruption of
business etc., caused by using the product or an
unusable product.
• The manufacturer, or its representatives, assumes no
responsibility for any damage, and loss of profits
caused by usage different to that explained in the
instruction manual.
• The manufacturer, or its representatives, assumes no
responsibility for damage caused by incorrect
operation, or action resulting from connection to other
products.
6
3. FEATURES OF AT-B2/B3/B4
The AT-B2/B3/B4 is equipped with a fast-action,
magnetically-damped, automatic compensator. After
the instrument has been approximately leveled using
the circular level, the line of sight is accurately leveled
by the automatic compensating mechanism.
The AT-B2/B3/B4 has been designed to allow stable
surveying operations regardless of environmental
conditions such as vibration and temperature changes.
The AT-B2/B3/B4 has a simple horizontal circle for
angle measurement, and the stadia lines on the reticle
can be used for approximate distance measurement.
The AT-B2/B3/B4 is ideally suited for general survey
work, civil engineering and construction work.
$
• The instrument is accurately leveled when the
bubbleis within the center circle of the circular level.
7
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