Leica NA720, NA728, NA730, NA724, NA730 plus User Manual
Leica NA720/724/
728/730/730 plus
User Manual
Version 2.0
English
2
NA720/724/728/730/730 plus, Introduction
Introduction
Purchase Congratulations on the purchase of a Leica NA720/724/728/730/730 plus.
This manual contains important safety directions as well as instructions for setting
up the product and operating it. Refer to "1 Safety Directions" for further information.
Read carefully through the User Manual before you switch on the product.
Product identification
The type and serial number of your product are indicated on the type plate.
Enter the type and serial number in your manual and always refer to this information
when you need to contact your agency or Leica Geosystems authorised service workshop.
Type: _______________
Serial No.: _______________
NA720/724/728/730/730 plus, Introduction 3
Symbols The symbols used in this manual have the following meanings:
Validity of this
manual
This manual applies to the NA720/724/728/730/730 plus instruments. Differences
between the various models are marked and described.
Type Description
DANGER
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation or an unintended
use which, if not avoided, could result in death or serious
injury.
CAUTION
Indicates a potentially hazardous situation or an unintended
use which, if not avoided, may result in minor or moderate
injury.
NOTICE Indicates a potentially hazardous situation or an unintended
use which, if not avoided, may result in appreciable material,
financial and environmental damage.
Important paragraphs which must be adhered to in practice as
they enable the product to be used in a technically correct and
efficient manner.
4
NA720/724/728/730/730 plus, Introduction
Available documentation
Refer to the following resources for all NA720/724/728/730/730 plus documentation:
• https://myworld.leica-geosystems.com
Name Description/Format
NA720/724/
728/730/730
plus User
Manual
All instructions required in order to operate the product
to a basic level are contained in the User Manual.
Provides an overview of the product together with technical data and safety directions.
NA720/724/728/730/730 plus, Table of Contents 5
Table of Contents
In this manual Chapter Page
1 Safety Directions
7
1.1 General Introduction 7
1.2 Definition of Use 8
1.3 Limits of Use 9
1.4 Responsibilities 10
1.5 Hazards of Use 11
2 Description of the System
15
2.1 Container Contents 16
2.2 Instrument Components 17
2.3 Understanding Terms and Expressions 18
3Operation
20
3.1 Preparation 20
3.2 Measurement 27
3.3 Check & Adjust 37
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NA720/724/728/730/730 plus, Table of Contents
4 Care and Transport
42
4.1 Transport 42
4.2 Storage 43
4.3 Cleaning and Drying 44
5 Technical Data
45
6 Accessories
48
NA720/724/728/730/730 plus, Safety Directions 7
1 Safety Directions
1.1 General Introduction
Description The following directions enable the person responsible for the product, and the
person who actually uses the equipment, to anticipate and avoid operational
hazards.
The person responsible for the product must ensure that all users understand these
directions and adhere to them.
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NA720/724/728/730/730 plus, Safety Directions
1.2 Definition of Use
Intended Use • Optical height readings.
• Optical distance measuring with stadia readings.
Reasonably foreseeable misuse
• Use of the product without instruction.
• Use outside of the intended use and limits.
• Disabling safety systems.
• Removal of hazard notices.
• Opening the product using tools, for example screwdriver, unless this is
permitted for certain functions.
• Modification or conversion of the product.
• Use after misappropriation.
• Use of products with recognisable damages or defects.
• Use with accessories from other manufacturers without the prior explicit
approval of Leica Geosystems.
• Aiming directly into the sun.
• Inadequate safeguards at the working site.
NA720/724/728/730/730 plus, Safety Directions 9
1.3 Limits of Use
Environment Suitable for use in an atmosphere appropriate for permanent human habitation: not
suitable for use in aggressive or explosive environments.
DANGER
Local safety authorities and safety experts must be contacted before working in
hazardous areas, or close to electrical installations or similar situations by the person
in charge of the product.
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NA720/724/728/730/730 plus, Safety Directions
1.4 Responsibilities
Manufacturer of
the product
Leica Geosystems AG, CH-9435 Heerbrugg, hereinafter referred to as Leica Geosystems, is responsible for supplying the product, including the user manual and original
accessories, in a safe condition.
Person responsible
for the product
The person responsible for the product has the following duties:
• To understand the safety instructions on the product and the instructions in the
user manual.
• To ensure that it is used in accordance with the instructions.
• To be familiar with local regulations relating to safety and accident prevention.
• To inform Leica Geosystems immediately if the product and the application
becomes unsafe.
• To ensure that the national laws, regulations and conditions for the operation of
e.g. radio transmitters or lasers are respected.
NA720/724/728/730/730 plus, Safety Directions 11
1.5 Hazards of Use
CAUTION
Watch out for erroneous measurement results if the product has been dropped or
has been misused, modified, stored for long periods or transported.
Precautions:
Periodically carry out test measurements and perform the field adjustments indicated
in the user manual, particularly after the product has been subjected to abnormal use
and before and after important measurements.
DANGER
Because of the risk of electrocution, it is dangerous to use poles and extensions in
the vicinity of electrical installations such as power cables or electrical railways.
Precautions:
Keep at a safe distance from electrical installations. If it is essential to work in this
environment, first contact the safety authorities responsible for the electrical installations and follow their instructions.
NOTICE Strong magnetic fields in the immediate vicinity (e.g. transformers, melting
furnaces...) may influence the compensator and lead to measuring errors.
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NA720/724/728/730/730 plus, Safety Directions
Precautions:
When working near strong magnetic fields, check results for plausibility.
CAUTION
Be careful when pointing the product towards the sun, because the telescope functions as a magnifying glass and can injure your eyes and/or cause damage inside the
product.
Precautions:
Do not point the product directly at the sun.
WARNING
During dynamic applications, for example stakeout procedures there is a danger of
accidents occurring if the user does not pay attention to the environmental conditions around, for example obstacles, excavations or traffic.
Precautions:
The person responsible for the product must make all users fully aware of the existing
dangers.
WARNING
Inadequate securing of the working site can lead to dangerous situations, for
example in traffic, on building sites, and at industrial installations.
Precautions:
Always ensure that the working site is adequately secured. Adhere to the regulations
governing safety and accident prevention and road traffic.
NA720/724/728/730/730 plus, Safety Directions 13
CAUTION
If the accessories used with the product are not properly secured and the product is
subjected to mechanical shock, for example blows or falling, the product may be
damaged or people can sustain injury.
Precautions:
When setting-up the product, make sure that the accessories are correctly adapted,
fitted, secured, and locked in position.
Avoid subjecting the product to mechanical stress.
WARNING
If the product is used with accessories, for example masts, staffs, poles, you may
increase the risk of being struck by lightning.
Precautions:
Do not use the product in a thunderstorm.
WARNING
If the product is improperly disposed of, the following can happen:
• If polymer parts are burnt, poisonous gases are produced which may impair
health.
• If batteries are damaged or are heated strongly, they can explode and cause
poisoning, burning, corrosion or environmental contamination.
• By disposing of the product irresponsibly you may enable unauthorised persons
to use it in contravention of the regulations, exposing themselves and third
parties to the risk of severe injury and rendering the environment liable to
contamination.
14
NA720/724/728/730/730 plus, Safety Directions
Precautions:
Product-specific treatment and waste management information can be downloaded
from the Leica Geosystems home page at http://www.leicageosystems.com/treatment or received from your Leica Geosystems dealer.
WARNING
Only Leica Geosystems authorised service workshops are entitled to repair these
products.
The product must not be disposed with household waste.
Dispose of the product appropriately in accordance with the national
regulations in force in your country.
Always prevent access to the product by unauthorised personnel.
NA720/724/728/730/730 plus, Description of the System 15
2 Description of the System
General description
The NA720/724/728/730/730 plus is a member of a new generation of construction
levels.
Its innovative technology makes the daily surveying jobs easier.
The instrument is ideally suited for all applications of a reliable and robust construction level.
The easy operation of the instrument functions can be quickly learned even by inexperienced surveyors.
• Easy operation; quickly to learn!
• Attractive design; low weight.
• Endless drive.
• Robust and reliable.
• Enables angle measurements with horizontal circle (choice of ° or gon).
• Resistant to water and dirt (IP57).
• Adaptable to all types of tripods with 5/8" central fixing screw.
• Nitrogen filled telescope to prevent fogging the lens.
• 3 years without additional costs with Leica Protect.
• Produced (in accordance to ISO 9001 and ISO 14001) and proofed with ISO
17123-2
• Swiss technology
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