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1. move to the desired item with the cursor keys press MENU to select and change the value with the cursor keys Afterwards close with the MENU key To leave the menu press MENU for 2 seconds Stabila LD420 Technical Data Distance measurement Typical Measuring Tolerance 1 0 mm 0 04 in Maximum Measuring 2 0 mm 0 08 in ae Range at target plate 100 m 330 ft y 80 m 262 ft Range at unfavourable 60 m 197 ft condition Smallest unit displayed laser point at distances General Laser type 635 nm lt 1 mW Protection class IP65 dust tight and jet water protected Autom laser switch off after 90 s Autom power switch off after 180 s Battery durability 2 x AAA up to 5000 measure ments 117 x 57 x 32 mm 4 6 x 2 4 x 1 3 in 138 g 1 43 oz 0 1 mm 1 32 in 6 30 60 mm 10 50 100 m Dimension H x D x W Weight with batteries Temperature range 25 to 70 C 13 to 158 F 10 to 50 C 14 to 122 F applies for 100 target reflectivity white painted wall low background illumination 25 C applies for 10 to 500 target reflectivity high back ground illumination 10 C to 50 C Tolerances apply from 0 05 m to 10 m with a confi dence level of 95 The maximum tolerance may deteriorate to 0 1 mm m between 10 m to 30 m and to 0 2 mm m for distances above 30 m applies for 100 target reflectivity background illumination o
2. responsible for the instrument must ensure that all users understand these directions and adhere to them Areas of responsibility Responsibilities of the manufacturer of the original equipment STABILA Messgerate Gustav Ullrich GmbH P O Box 13 40 D 76851 Annweiler Landauer Str 45 D 76855 Annweiler USA Canada STABILA Inc 332 Industrial Drive South Elgin IL 60177 1 800 869 7460 The company above is responsible for supplying the product including the User Manual in a completely safe condition The company above is not responsible for third party accessories Responsibilities of the person in charge of the instrument e To understand the safety instructions on the product and the instructions in the User Manual To be familiar with local safety regula tions relating to accident prevention Always prevent access to the product by unauthorised personnel Safety Instructions Permitted use e Measuring distances Tilt measurement Prohibited use Using the product without instruction Using outside the stated limits Deactivation of safety systems and removal of explanatory and hazard labels Opening of the equipment by using tools screwdrivers etc Carrying out modification or conversion of the product Use of accessories from other manufac turers without express approval Deliberate dazzling of third parties also in the dark Inadequate safeguards at the surveying site e g when measuring on roads
3. Overview Display A On Measure Add Up Set value Area Volume A Divide Right Menu Calculate Additional results _______ Reference Subtract Down Set value Stabila LD420 Instrument Set up Display Insert batteries Area Volume To ensure a reli able use do not use zinc carbon Stake out Illumination batteries Change batter ies when battery symbol is flash ing Measuring reference Circumfer ence Tilt angle roe ery 3 ple eae 2 x j A Ceiling area a Addition Subtraction Main line 2nd result Stabila LD420 Operations Switching ON OFF Message Codes Press ON but 1x a 2x If the message InFo appears with a number observe the in ton 2 sec to start continuous structions in section Message laser mode If Codes Example no key is pressed for 180 2 sec Leave actual 256 switches Off au turned OFF fault operation sec the device Device is Undo last action function go to de tomatically mode e Press button 2 sec and refer ence from front is set m y OO permanently i Distance is meas Next distance is measured from ured from the tripod the front of the device thread permanently Distance is measured from the rear of the device standard setting Stabila LD420 Operations Multifunctional endpiece Stabila LD420 The orientation of the endpiece is
4. Table of Contents Instrument Set up Introduction Overview Warranty Display Safety Instructions Insert batteries Areas of responsibility Operations Permitted use Switching ON OFF Prohibited use Hazards in use Limits of use Disposal Electromagnetic Compatibility EMC FCC statement applicable in U S Laser classification Measuring Functions Labelling Measuring single distance Permament Minimum Maximum measuring Message Codes Adjusting measuring reference tripod Multifunctional endpiece Special Functions Pythagoras 1 Pythagoras 2 3 point Pythagoras 3 partial height Stake out Trapezoid Stabila LD420 Instrument Set up Introduction The safety instructions and the user manual should be read through carefully before the product is used for the first time A The person responsible for the product must ensure that N all users understand these directions and adhere to them The symbols used have the following meanings WARNING Indicates a potentially hazardous situation or an unintended use which if not avoided will result in death or serious injury CAUTION Indicates a potentially hazardous situation or an unintended use which if not avoided may result in minor injury and or appreci able 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
5. automatically detected and the zero pointis accordingly ad justed Measuring Functions Measuring single distance Tipp To avoid jitter Target surfaces Measuring problems set Timer errors can occur when meas ON and time to 1 sec uring to colourless liquids glass styrofoam or semi per meable surfaces or when aiming at high gloss surfac es Against dark surfaces the measuring time increases Max and min values are displayed in 1st and 2nd row The last value measured is T displayed in the main line If no measure 3 ment is possible 3rd row shows a line ax 3 8094m Stops permanent minimum min 29675m maximum measuring With F f pressing the equal button the Used to measure room diagonals maximum val max or min value can be moved ues or horizontal distance minimum values in the main line for calculation afterwards The measured value is shown in the main line After pressing the equal button the result is shown in the main line This process can be repeated as required Multiply The next meas The next meas The next meas The next ing a length more than 3 times is urementisadded urementis sub urement is multi measurement not possible The same process to the previous tracted from the plied with is divided with can be used for adding or sub one previous one previous one previous one tracting areas or volumes Values from memory also can be used for calculations Stabila LD420 Mea
6. construction sites etc Deliberate or irresponsible behaviour on scaffolding when using ladders when measuring near machines which are running or near parts of machines or installations which are unprotected Aiming directly in the sun Hazards in use WARNING Watch out for erroneous measurements if the instrument is defective or if it has been dropped or has been misused or modified Carry out periodic test measurements Particularly after the instrument has been subject to abnormal use and before during and after important measurements CAUTION Never attempt to repair the product your self In case of damage contact a local dealer WARNING Changes or modifications not expressly approved could void the user s authority to operate the equipment Limits of use i Refer to section Technical data The device is designed for use in areas permanently habitable by humans Do not use the product in explo sion hazardous areas or in aggressive environments Stabila LD420 Disposal CAUTION Flat batteries must not be disposed of with household waste Care for the environ ment and take them to the collection points provided in accordance with national or local regulations The product must not be disposed with household waste Dispose of the product appropri ately in accordance with the ys national regulations in force in your country Adhere to the national and country specific regulation
7. echnician for help Laser classification Labelling Laser Radiation Do not stare into the beam Laser class 2 acc IEC 60825 1 2007 Maximum radiant power lt 1mW Emitted wavelength 620 690nm Beam divergence 0 16 x 0 6 mrad Impulse duration 0 2 x 10 9s 0 8 x 109s The device produces visible laser beams which are emitted from the instrument Itis a Class 2 laser product in accordance with IEC60825 1 2007 Radiation safety of laser products Laser Class 2 products Do not stare into the laser beam or direct it towards other people unnecessarily Eye protection is normally afforded by aversion responses including the blink reflex WARNING Looking directly into the beam with optical aids e g binoculars telescopes can be hazardous CAUTION Looking into the laser beam may be hazardous to the eyes ADOC EK STABILA Fu Type LD 420 Stabila Messger te D 76855 Annweiler am Trifels Subject to change drawings descriptions and technical data without prior notice Stabila LD420
8. prove value b and start measurement When approaching a stake out point to less than 0 1 m the instrument starts to beep Special Functions Trapezoid Aim laser at up Aim laser at 2nd Aim laser at rec per point point tangular point The result is shown in the main line and the measured distanc es above With the MENU key additional results can be selected Stabila LD420 a 20 last displays D 10 constants k are displayed E are displayed The value from the main line can be used for fur ther calculations Tipp Store val Select position in ues like PI or the memory price per square meter for calcu lations Set or change value Dw amp 00 000 m Selected Tipp Change the dimensions digit is to the required setting Delete Press and to blinking Change value with the dinencion to ee factor gether to start cursor keys without dimension change mode Stabila LD420 Settings To allow a maximum of user friendliness notwithstanding flexi bility the instrument has a structured settings menu Following sub items are accessible Timer On Off Time Timer 0 99sec ii ae Unit 0 000m 0 000 m 0 00m 0 00ft 0 00 4 0 00 9 ooo 0 00in 0in1 32 0in1 16 0in8 Laser Continuous On Off Display Backlight Time 0 99sec 99sec permanent Beep On Off Offset On Off Offset value Reset No Yes In order to change the setting
9. r approximately 30 000 lux For accurate indirect results the use of a tripod is recommended Stabila LD420 Functions Distance measuring l m Pythagoras 2 point 3 point partial height Trapezoid yes Multiplication Division yes Adjust values yes Memory 20 displays 10 constants Illuminated display yes Multifunctional endpiece yes Message Codes If the message Error does not disappear after switching on the device repeatedly contact the dealer If the message InFo appears with a number press the Clear button and observe the following instructions No Cause 204 Calculation error Correction Perform measurement again 252 Temperature too Let device cool down high Temperature too low Received signal too weak measuring time too long Received signal too high Too much back ground light Measurement outside of meas uring range Laser beam inter rupted 253 Warm device up 255 Change target surface e g white paper 256 Change target surface e g white paper 257 Shadow target area 258 Correct range 260 Repeat measurement Care e Clean the device with a damp soft cloth Never immerse the device in water e Never use aggressive cleaning agents or solvents Warranty Stabila provides a two year warranty for the Stabila LD 420 Futher information can be found on the Internet at www stabila de Stabila LD420 Safety Instructions The person
10. s Product specific treatment and waste management can be downloaded from our homepage Electromagnetic Compatibility EMC WARNING The device conforms to the most stringent requirements of the relevant standards and regulations Yet the possibility of causing interference in other devices cannot be totally excluded Safety Instructions FCC statement applicable in U S This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential instal lation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful inter ference to radio communications However there is no guarantee that inter ference will not occur in a particular instal lation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interfer ence by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV t
11. s Pythagoras 1 Aim laser at up per point Aim laser at up per point Aim laser rectan gular at lower Aim laser at rec tangular point The result is shown in the main line and the measured distances above Pressing the measuring key for 2 sec in the function activates automatically Minimum or Maxi mum measurement With the MENU key additional results can be selected Stabila LD420 The result is shown in the main line and the measured dis tances above Pressing the meas uring key for 2 sec in the function acti vates automatically Minimum or Maxi mum measure ment Special Functions Pythagoras 3 partial height Aim laser at up per point Aim laser at 2nd s Aim laser at rec point tangular point The result is shown in the main line and the measured distanc es above Pressing the measuring key for 2 sec in the function activates automatically Minimum or Maximum measurement With the MENU key additional results can be selected Stabila LD420 Special Functions Stake out Two different distances a and b can be entered to mark off de fined meas ured lengths bdo Adjust value a Move device slowly along the stake out line The distance to the next stake out point is dis played i value b 4 a 1250m Stabila LD420 0 238 m to the next point 1 012 m overall distance Start Change measuring values Ap
12. suring Functions Area The result is shown in the main line and the measured 3 Q distances above Partial Measurements Press or after starting the loj 4 w first measurement Measure and add or subtract distanc Aim laser at first Aim laser at sec es Finish with MENU Meas target point ond target point ure 2nd length 71230 M Circumference 2 559 M Diagonal distance With the MENU key additional results can be selected Press or to add or subtract next area measurement Stabila LD420 Measuring Functions Volume Aim laser at first Aim laser at sec target point ond target point The result is shown in the main line and the measured distances above Circumfer Wall areas ence With the MENU key additional results can be selected Press or to add or subtract next volume measurement Stabila LD420 Aim laser at third target point Ceiling floor area Special Functions In order to increase the usability of the instrument major func tions are accessible directly via keyboard All other functions are located in a menu structure All special functions can directly started by pressing the On Measure key after selection Following special functions are available Pythagoras e Pythagoras 2 3 point e Pythagoras 3 partial height Stake out Trapezoid FUNC ree Stabila LD420 Special Function

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