Leica NA332 Automatic Level User Manual

: June 9, 2024
: Leica

Leica NA332 Automatic Level

Setting up the tripod

Careful handling of tripod

Levelling up

Focusing

Centering

Introduction

Purchase Congratulations on the purchase of a Leica NA320/24/32.

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. Always refer to this information when you need to contact your agency or Leica Geosystems authorized service workshop.

Symbols

The symbols used in this manual have the following meanings:

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.

Validity of this manual
This manual applies to the NA320/24/32 instruments. Differences between the various models are marked and described.

Available Documentation

Name| Description/Format| |
---|---|---|---
NA320/24/32
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.| –| ✅

Safety Directions

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.

Definition of Use

Intended Use

Optical height readings.
Optical distance measuring with stadia readings.

Reasonably fore-seeable 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 recognizable 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.

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.

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.

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 as well as before and after important measurements.

DANGER
Because of the risk of electrocution, it is dangerous to use poles, levelling staffs 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. 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, accident prevention and road traffic.

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 unauthorized 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.

Precautions: 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 unauthorized personnel.

Product-specific treatment and waste management information can be downloaded from the Leica Geosystems home page at http://www.leica–
geosystems.com/treatment or received from your Leica Geosystems distributor.

WARNING
Only Leica Geosystems authorized service workshops are entitled to repair these products.

Description of the System

General description The NA320/24/32 is a modern automatic level for the construction industry. It is a level for all construction levelling and alignment works.
Operating this level is simple. Learning is effortless and it works for anyone in your team.

Easy to use
Fast set-up with side mirror view at bubble
Smooth foot-screws for ease of adjustment
Peep sight for quick line up to target
Dust and water resistant

Available Models

Container Contents

Container Contents

a) Allen key
b) Screwdriver
c) CD with User Manual
d) Customer information, Manufacturer confirmation
e) Instrument

Instrument Components

Instrument Components

a) Focusing knob
b) Objective
c) Endless drive (both sides)
d) Circular Bubble
e) Reflecting Mirror
f) Peep Sight
g) Eyepiece
h) Horizontal Circle
i) Foot screw
j) Adjustment screw cover

Operation

Distance and Angle measurement

Distance measurement

| Calculating the distance
---|---
Reading|
Upper distance line (l1):     2.670 m|
Lower distance line (l2):     -2.502 m|
Difference LΔ:                   0.168 m|
x 100|
Result|
| Distance d:                       16.8 m

Distance d = LΔ x 100

Angle measurement

Step	Description
1.	Align instrument to point A.
2.	Turn Hz-circle to “0”.
3.	Align instrument to point B.
4.	Aim on the centre of the staff.
5.	Read off Hz-angle from Hz circle. In this example the Hz-angle is 60°.

Check & Adjust the line of sight

Checking the line of sight

Step| Description|
---|---|---
F| With the circular bubble centered and adjusted, the line of sight should be horizontal.|
1.| Choose a distance of appr. 30 m within a gentle terrain.
2.| Set up a staff at both final points (A, B).
3.| Set up the instrument at point I1 (halfway between A and B, just pass it down) and centre the bubble.
4.| Read both staffs. Reading on A = 1.832 m Reading on B = 1.616 m ΔH = A – B = 0.216 m
5.| Set up the level about 1 m from staff A.|
6.| Read staff A (eg.: 1.604 m).
7.| Find nominal reading B; eg.:

Reading A – ΔH = 1.604 m – 0.216 m =

1.388 m.

8.| Read staff B, compare nominal-/actual- reading.

Adjusting the line of sight

Step| Description|
---|---|---
F| When the difference nominal-/actual- reading is more than 3 mm the line of sight must be adjusted.|

1.| Turn the adjusting screw until the middle hair gives the required reading (eg. 1.388 m).
2.| Check line of sight again.
F| Before starting field work or after long periods of storage/ transport of your equipment check the field adjustment parameters specified in this User Manual.

Care and Transport

Transport

Transport in the field
When transporting the equipment in the field, always make sure that you

either carry the product in its original transport container,
or carry the tripod with its legs splayed across your shoulder, keeping the attached product upright.

Transport in a road vehicle
Never carry the product loose in a road vehicle, as it can be affected by shock and vibration. Always carry the product in its transport container, original packaging or equivalent and secure it.

Shipping
When transporting the product by rail, air or sea, always use the complete original Leica Geosystems packaging, transport container and cardboard box, or its equivalent, to protect against shock and vibration.

Field adjustment
Periodically carry out test measurements and perform the field adjustments indicated in the User Manual, particularly after the product has been dropped, stored for long periods or transported.

Storage

Product
Respect the temperature limits when storing the equipment, particularly in summer if the equipment is inside a vehicle. Refer to “5 Technical Data” for information about temperature limits.

Field adjustment
After long periods of storage inspect the field adjustment parameters given in this user manual before using the product.

Cleaning and Drying

Product and accessories

Blow dust off lenses.
Never touch the glass with your fingers.
Use only a clean, soft, lint-free cloth for cleaning. If necessary, moisten the cloth with water or pure alcohol. Do not use other liquids; these can attack the polymer components.

Damp products
Dry the product, the transport container, the foam inserts and the accessories at a temperature not greater than +40°C/+104°F and clean them. Do not repack until everything is dry. Always close the transport container when using in the field.