Leica NA720/724/ 728/730/730 plus
Contents
1. Version 2 0 English 7 when it has to be right euca Geosystems NA720 724 728 730 730 plus Introduction 2 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 A up the product and operating it Refer to 1 Safety Directions for further informa tion Read carefully through the User Manual before you switch on the product Product identifica The type and serial number of your product are indicated on the type plate tion 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 work shop Type 2 Serial No Symbols The symbols used in this manual have the following meanings Type Description A DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury A WARNING Indicates a potentially hazardous situation or an unintended use which if not avoided could result in death or serious injury A 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 envi2. 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 NA720 724 728 730 730 plus Description of the System 15 NA720 724 728 730 730 plus Description of the System 16 2 1 Container Contents Container contents e a Allen key b Protective cover c CD user manual d Customer information Manufacturer certification Protect card e Level 008716 001 2 2 Instrument Components Instrument compo a b nents 008715_001 g h i a Level mirror for NA720 NA724 Level prism for NA728 NA730 NA730 plus f b Eyepiece g c Cover glass for angle reading or gon h d Focusing knob i e Coarse aiming device back fore sight for NA720 NA724 optical sight with point j marking for NA728 NA730 NA730 plus k Objective Endless drive both sides Circular level Knurled ring of adjustable hori zontal circle Footscrew Base plate NA720 724 728 730 730 plus Description of the System 17 NA720 724 728 730 730 plus Description of the System 18 2 3 Understanding Terms and Expressions Plumb line 0 a Plumb line a b Vertical axis tilt 008717_001 By centring the circular level the instrument is nearly levelled up A small instrument tilt remains the vertical axis tilt Compensator a Plumb line 008788001 a b Line of sight The compensator in the instrument
3. height reading uring 008794_001 Reading Angle measuring Upper distance line 2 670 m Lower distance line 2 502 m Difference L 0 168 m Distance d 16 8 m Result Distance d 100 x L The NA720 724 728 730 730 plus is equipped with a horizontal circle The gradua tion is 1 or 1 gon Degree ALL LL qlo 0 350 008796_001 Wanted Angle between point A and point B Carry out steps 1 to 6 according to height measuring By doing so align the vertical hair of the reticle to the centre of the staff NA720 724 728 730 730 plus Operation 29 NA720 724 728 730 730 plus Operation Line levelling Step Description 1 Turn Hz circle to 0 i JIA I 2 Align instrument to point B and aim on the fa centre of the staff ZL 3 Read off Hz angle from Hz circle Example above Hz 60 008797_001 008798001 Wanted Height difference AH between point A and B ES Select instrument station and staff location by pacing off so that approxi mately the same target distances result d1 d2 approx 40 to 50m Procedure Step Description 1 Setup instrument at l4 2 Setup level staff vertically at point A 3 Aim on staff and read off and take down height backsight R 4 Setup level at the changepoint 2 aim on staff and read off and take down height foresight V 5 Setup level
4. is responsible for compensating the vertical axis tilt enabling an exactly horizontal aiming Backsight Fore sight Intermediate sight AH 008809_001 For determining the height difference AH between the ground points A and B the back sight R is measured first followed by the forward sight V Additional points relating to A are measured as intermediate sight S NA720 724 728 730 730 plus Description of the System 19 NA720 724 728 730 730 plus Operation 20 3 Operation 3 1 Preparation Tripod When setting up the tripod pay attention to ensuring a horizontal position of the tripod plate Slight corrections of inclina tion can be made with the foot screws of the tribrach Larger corrections must be done with the tripod legs Loosen the clamping screws on the tripod legs pull out to the required length and tighten the clamps a b In order to guarantee a firm foothold sufficiently press the tripod legs into the ground When pressing the legs into the ground note that the force must be applied along the legs Careful handling of tripod Check all screws and bolts for correct fit During transport always use the cover supplied Use the tripod only for surveying tasks NA720 724 728 730 730 plus Operation 21 NA720 724 728 730 730 plus Operation 22 Levelling up 1 Place level onto tripod head Tighten central step by step fixing sc
5. 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 NA720 724 728 730 730 plus Safety Directions 9 NA720 724 728 730 730 plus Safety Directions 10 1 4 Responsibilities Manufacturer of Leica Geosystems AG CH 9435 Heerbrugg hereinafter referred to as Leica Geosys the product tems is responsible for supplying the product including the user manual and original accessories in a safe condition Person responsible The person responsible for the product has the following duties for the product e To understand the safety instructions on the product and the instructions in the user manual e To ensure that it is used in accordance with the instructions e To be familiar with local regulations relating to safety and accident prevention e To inform Leica Geosystems immediately if the product and the application becomes unsafe e To ensure that the national laws regulations and conditions for the operation of e g radio transmitters or lasers are respected 1 5 A CAUTION A DANGER NOTICE Hazards of Use 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 particula
6. 730 plus Operation 39 NA720 724 728 730 730 plus Operation 40 Step Description 5 Set up the level about 1 m from staff A Read staff A eg 1 604 m Find nominal reading B eg Reading A AH 1 604 m 0 216 m 1 388 m actual 1 604 5 Read staff B compare nominal actual reading 008980_001 en Adjusting the line Ste of sight E Description When the difference nominal actual reading is more than 3 mm the line of sight must be adjusted Turn the allen key until the middle hair gives the required reading eg 1 388 m 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 008815_001 NA720 724 728 730 730 plus Operation 41 NA720 724 728 730 730 plus Care and Transport 42 4 4 1 Transport in the field Transport in a road vehicle Shipping Field adjustment Care and Transport Transport When transporting the equipment in the field always make sure that you e either carry the product in its original transport container e or carry the tripod with its legs splayed across your shoulder keeping the attached product upright Never carry the product loose in a road vehicle as it can be affected by shock and vibration Always carry the pro
7. A720 724 728 730 730 plus Technical Data 47 NA720 724 728 730 730 plus Accessories 48 6 Accessories Purchasable Acces sory a Protective cover b Allen key c Level base d Standard level staff 008981 001 e Tripod NA720 724 728 730 730 plus Accessories 49 Original text Printed in Switzerland 2015 Leica Geosystems AG Heerbrugg Switzerland 712355 2 0 0en Leica Geosystems AG Heinrich Wild Strasse CH 9435 Heerbrugg e Switzerland when it has to be right Phone 41 71 727 31 31 www leica geosystems com Geosystems
8. at I aim on staff at the changepoint 2 and read backsight and take down 6 Carry out a foresight at changepoint 3 7 Continue in the same way until height at point B is measured Result AH sum backsight sum foresight NA720 724 728 730 730 plus Operation 31 NA720 724 728 730 730 plus Operation 32 Area levelling Example of the booking Point No Backsight R Foresight V Height A 2 502 650 100 2 0 911 1 803 3 3 103 1 930 B 0 981 651 902 sum 6 516 4 714 AH 1 802 008811_001 Wanted Height difference of several reference points ee The required accuracy is usually not very high with such measurements Nevertheless from time to time read the staff on a stable intermediate point reading must remain the same Procedure Step Description T Set up instrument centrally between the desired points The instrument tele scope may not be below the highest measured intermediate point Set up staff vertically at reference point A Aim on staff and read and take down height backsight to known point Set up staff vertically at point 1 U NI WIN Aim on staff and read and take down height measuring intermediate point intermediate sight Repeat steps 4 and 5 for additional intermediate points The height of individual points are Height Height of station point backsight A int
9. d stakeout point 3 3 Check amp Adjust Service the tripod 2 step by step XI TSOX 122 CS The connections between metal and timber components must always be firm and tight 1 Tighten the leg cap screws moderately with the allen key supplied 2 Tighten the articulated joints on the tripod head just enough to keep the tripod legs open when lifting the tripod off the ground 3 Tighten the screws of the tripod legs NA720 724 728 730 730 plus Operation 37 NA720 724 728 730 730 plus Operation 38 Circular Level Step Description 1 Level up instrument Ar 2 Turn instrument by 180 60 3 If bubble of level is outside the circle then it should be adjusted see point 4 4 Correct the half error using an Allen key and repeat steps 2 and 3 until the bubble of level is in the centre in any telescope direction 008800_001 Checking the line of sight Step Description CS With the circular bubble centred and adjusted the line of sight should be H 1 832 H 1 616 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 I 008979 001 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 AH A B 0 216m NA720 724 728 730
10. duct in its transport container original packaging or equivalent and secure it When transporting the product by rail air or sea always use the complete original Leica Geosystems packaging transport container and cardboard box or its equiva lent to protect against shock and vibration 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 NA720 724 728 730 730 plus Care and Transport 43 NA720 724 728 730 730 plus Care and Transport 44 4 3 Cleaning and Drying Product and acces Blow dust off lenses sories e Never touch the glass with your fingers e 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 i
11. ermediate sight NA720 724 728 730 730 plus Operation 33 NA720 724 728 730 730 plus Operation 34 Example of the booking Point No Interm sight Height A 592 00 R1 2 20 594 20 sl 1 80 592 40 S2 1 90 592 30 s3 2 50 591 70 S4 2 30 591 90 Instrument horizon Levelling total station measuring 008802_001 Backsight to known point Wanted Position of several ground points ES The levelling total station measuring is normally carried out during area level ling Procedure Step Description L Sequence of measurements is the same as with area levelling However beside the height read also the staff section L see chapter Distance meas uring and the Hz angle Transfer measured value into the map points are determined by position and height NA720 724 728 730 730 plus Operation 35 NA720 724 728 730 730 plus Operation 36 Levelled stakeout Measuring ground points 008823 001 The stakeout is the counterpart to the levelling total station measuring map points are set out in the field Procedure Step Description 13 Set up instrument at a known point centre and level up 2 Focus instrument and aim on known orientation point 3 Orient horizontal circle Hz direction 4 Move staff to stakeout point on the basis of known values distance and Hz angle height an
12. ng dangers 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 A CAUTION A WARNING A WARNING 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 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 If the product is improperly disposed of the following can happen e f polymer parts are burnt poisonous gases are produced which may impair health e If batteries are damaged or are heated strongly they can explode and cause poisoning burning corrosion or environmental contamination e 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 enviro
13. nment liable to contamination NA720 724 728 730 730 plus Safety Directions 13 NA720 724 728 730 730 plus Safety Directions 14 A WARNING 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 unauthorised 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 dealer Only Leica Geosystems authorised service workshops are entitled to repair these products 2 General descrip tion Description of the System 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 construc tion level The easy operation of the instrument functions can be quickly learned even by inex perienced 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
14. nsport 42 4 2 Storage 43 4 3 Cleaning and Drying 44 5 Technical Data 45 6 Accessories 48 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 NA720 724 728 730 730 plus Safety Directions 7 NA720 724 728 730 730 plus Safety Directions 1 2 Intended Use Reasonably fore seeable misuse Definition of Use Optical height readings Optical distance measuring with stadia readings 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 A DANGER Local
15. rew of tripod 2 Turn footscrews of tribrach into its centre position 3 Centre circular level by turning the foot screws 008790_001 Centring the circular level 1 Turn footscrews A and B simultaneously in opposite directions until bubble is in the centre on the imaginary T 2 Turn footscrew C until bubble is centred 008791 001 008792 001 NA720 724 728 730 730 plus Operation 23 NA720 724 728 730 730 plus Operation 24 Selection of angle Changing between and gon reading I gt Degree e 0 350 Description Loosen screws with Allen key and remove cover glass Turn cover glass lt Step l 2 3 Insert cover glass and tighten screws again Focusing telescope Step Description 1 Aim telescope against a bright background e g white paper 2 Turn eyepiece until reticule is sharp focused and deep black Now the eyepiece is adapted to your eye 008816_001 3 Aim telescope on staff using the coarse aiming device 4 Turn focusing knob until image of staff is sharply focused If the eye is moved up and down behind the eyepiece the image of the staff and the reticle may not be displaced against each other 008817_001 NA720 724 728 730 730 plus Operation 25 NA720 724 728 730 730 plus Operation Centring 26 Step Description For po
16. rly after the product has been subjected to abnormal use and before and after important measurements 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 instal lations and follow their instructions Strong magnetic fields in the immediate vicinity e g transformers melting furnaces may influence the compensator and lead to measuring errors NA720 724 728 730 730 plus Safety Directions 11 NA720 724 728 730 730 plus Safety Directions 12 A CAUTION A WARNING A WARNING Precautions When working near strong magnetic fields check results for plausibility 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 During dynamic applications for example stakeout procedures there is a danger of accidents occurring if the user does not pay attention to the environmental condi tions around for example obstacles excavations or traffic Precautions The person responsible for the product must make all users fully aware of the existi
17. ronmental damage amp 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 This manual applies to the NA720 724 728 730 730 plus instruments Differences manual between the various models are marked and described NA720 724 728 730 730 plus Introduction NA720 724 728 730 730 plus Introduction Available docu Name Description Format mentation P p lt NA720 724 All instructions required in order to operate the product 728 730 730 to a basic level are contained in the User Manual plus User Provides an overview of the product together with tech Manual nical data and safety directions Refer to the following resources for all NA720 724 728 730 730 plus docu mentation e https myworld leica geosystems com 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 3 Operation 20 3 1 Preparation 20 3 2 Measurement 27 3 3 Check amp Adjust 37 NA720 724 728 730 730 plus Table of Contents 5 NA720 724 728 730 730 plus Table of Contents 4 Care and Transport 42 4 1 Tra
18. s dry Always close the transport container when using in the field pe ML 5 Technical Data Accuracy Standard deviation for 1 km double levelling ISO17123 2 NA720 2 5mm NA724 2 0 mm NA728 1 5 mm NA730 1 2 mm NA730 plus 0 7 mm Height accuracy for a single measurement at 30 m NA720 1 5mm NA724 1 2 mm NA728 Imm NA730 0 8 mm NA730 plus 0 4 mm Telescope Erect image Magnification NA720 20x NA724 24x NA728 28x NA730 NA730 plus 30 x NA720 724 728 730 730 plus Technical Data NA720 724 728 730 730 plus Technical Data 46 Field of view at 100 m Shortest target distance gt 4m NA720 gt 3 5 m NA724 gt 3 m NA728 NA730 NA730 plus lt 0 5 m NA720 NA724 lt 0 7 m NA728 NA730 NA730 plus Distance measure Multiplication factor ment Additive constant Resolution higher than 100 all instruments 0 all instruments 4 NA720 3 5 NA724 3 NA728 NA730 NA730 plus Compensator Working range 19 Setting accuracy 0 5 standard deviation Circular level Sensitivity 10 2 mm Circle Graduation 360 400gon Graduation interval 1 1gon Adaption To normal or ball head tripod Central fixing screw 5 8 Environmental Temperature specifications Operating temperature Storage temperature 20 C to 50 C 4 F to 122 F 40 C to 70 C 40 F to 158 F N
19. ssible centring over a ground point 12 Attach plumb bob 2 Loosen central fixing screw slightly and shift instru ment parallel on tripod until the plummet is exactly over the point 3 Tighten central fixing screw 3 2 Measurement Height reading CS Before starting field work or after longer periods of storage transport of your equipment check the field adjustment parameters specified in this User Manual amp Reduce possible vibrations by holding the tripod legs CS Ifthe optical parts of your instrument are dirty of fogged your measure ments can be affected Keep clean all optical parts of your instrument and follow the cleaning instructions specified in the User Manual Step Description 1 Setup instrument level and sharp focus the reti d cule 2 Setup level staff vertically refer also to Instruction Manual of staff H 3 Roughly aim on staff using the coarse aiming device Z 008793_001 4 Sharp focus using the focusing knob NA720 724 728 730 730 plus Operation 27 NA720 724 728 730 730 plus Operation 28 Step Description 5 Fine aim on staff using the endless drives 6 Check if circular level is centred view level prism level mirror des Read off height H at the centre hair of the reticle Example above H 2 585 m 008795_001 Distance meas Carry out steps 1 to 6 according to
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