Leica NA300 Series User manual

Leica
NA320/24/32
Version 1.0

Careful handling of tripod
Sorgfältige Behandlung des
Statives Manipulation correcte du
trépied
Levelling up
Horizontierung Calage à l'horizontale
trépied
Mise en place du
Stativs
Aufstellen des
tripod
Setting up the
004171_001
Colocación del
trípode
Manejo cuidadoso del
trípode
Nivelación
C
AB
Δ/2
Focusing
Fokussierung Mise au point
Centering
Zentrierung Centrage
004172 001
1 2
3
Δ
Enfoque Centrado

Leica
NA320/24/32
User Manual
Version 1.0
English

NA320/24/32, Introduction 2
en
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 Identifica-
tion
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 authorised service workshop.
Symbols The symbols used in this manual have the following meanings:
Validity of this
manual
This manual applies to the NA320/24/32 instruments. Differences between the
various models are marked and described.
Available Documen-
tation
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.
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.
-

NA320/24/32, Table of Contents 3
en
Table of Contents
In this manual Chapter Page
1 Safety Directions 4
1.1 General Introduction 4
1.2 Definition of Use 4
1.3 Limits of Use 4
1.4 Responsibilities 4
1.5 Hazards of Use 5
2 Description of the System 7
2.1 Description of the System 7
2.2 Container Contents 7
2.3 Instrument Components 8
3 Operation 9
3.1 Distance and Angle measurement 9
3.2 Check & Adjust the line of sight 10
4 Care and Transport 11
4.1 Transport 11
4.2 Storage 11
4.3 Cleaning and Drying 11
5 Technical Data 12

NA320/24/32, Safety Directions 4
en
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.
1.2 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 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.
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.
1.4 Responsibilities
Manufacturer of
the product
Leica Geosystems AG, CH-9435 Heerbrugg, hereinafter referred to as Leica Geosys-
tems, 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.

NA320/24/32, Safety Directions 5
en
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
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 instal-
lations 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 func-
tions 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.

NA320/24/32, Safety Directions 6
en
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.
Precautions:
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 authorised service workshops are entitled to repair these prod-
ucts.
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.

NA320/24/32, Description of the System 7
en
2 Description of the System
2.1 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
2.2 Container Contents
Container Contents
011147_001
NA320 NA324 NA332
a) Allen key
b) Screwdriver
c) CD with User Manual
d) Customer information,
Manufacturer confirmation
e) Instrument
011146 001
a
b
c
d
e

NA320/24/32, Description of the System 8
en
2.3 Instrument Components
Instrument Compo-
nents
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) Footscrew
j) Adjustment screw cover
011145_001
ab
c
cdef g
hij

NA320/24/32, Operation 9
en
3 Operation
3.1 Distance and Angle measurement
Distance measure-
ment
Distance d = LΔx 100
Angle 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
003990_001
L
∆
l
2
d
L∆ = l1-l2
d = L∆ x 100
l
1
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°.
003991_001
1
2
3
4
5
A
B

NA320/24/32, Operation 10
en
3.2 Check & Adjust the line of sight
Checking the line of
sight
Adjusting the line of
sight
Step Description
With the circular bubble centred 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.
dd
AB
ΔH
H=1.832 H=1.616
δδ
I1
003993_001
AB
ΔH
δ
I
2
actual = 1.604
nominal
= 1.388
003994_001_en
Step Description
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.
Before starting field work or after long periods of
storage/ transport of your equipment check the field
adjustment parameters specified in this User
Manual.
003995_001

NA320/24/32, Care and Transport 11
en
4 Care and Transport
4.1 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.
4.2 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.
4.3 Cleaning and Drying
Product and acces-
sories
• 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.

NA320/24/32, Technical Data 12
en
5 Technical Data
Accuracy Standard deviation for 1 km double levelling ISO17123-2:
Telescope
Compensator
Distance measure-
ment
Circular level
Circle
Adaption
Environmental
specifications
Temperature
Protection against water, dust and sand
NA320: 2.5 mm
NA324: 2.0 mm
NA332: 1.8 mm
Erect image
Magnification
NA320: 20 x
NA324: 24 x
NA332: 32 x
Field of view: < 2.1 m at 100 m
Shortest target distance
from instrument axis:
< 1.0 m
Working range: ±15’
Setting accuracy
(standard deviation):
0.5’’
Multiplication factor: 100
Additive constant: 0
Sensitivity: 8’/2 mm
Graduation: 360°
Graduation interval: 1°
To normal or ball head tripod
Central fixing screw: 5/8’’
Operating temperature Storage temperature
-20°C to +40°C
(-4°F to +102°F)
-30°C to +55°C
(-22°F to +131°F)
Protection
IP54 (IEC 60529)