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Automatic Level

E

SL

2

INSTRUCTION MANUAL

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Summary of Contents for ESL2

Page 1: ...1 Automatic Level ESL2 INSTRUCTION MANUAL...

Page 2: ...ta 6 4 Description 7 4 1 Instrument 8 4 2 Leveling Staffs 9 4 3 Tripod 10 5 Instructions for Use 10 5 1 Unpacking and Setting Up 10 5 2 Leveling Up 10 5 3 Focusing and Sighting 11 5 4 Compensator Chec...

Page 3: ...g 2 15 6 3 Precise Height Measurement with ESM1 fig 3 16 7 Testing and Adjusting 19 7 1 Tripod 19 7 2 Circular Level fig 5 19 7 3 Horizontality of the Line of Sight 21 8 Care and Transport 24 8 1 Tran...

Page 4: ...lass reading scale Range Interval Estimation 10mm 0 1mm 0 01mm 2 Applications Model ESL2 Automatic Level is adoptable for the second and third class leveling It is also used for general construction e...

Page 5: ...cope Image Erect Magnification 32x Clear objective aperture 45mm Shortest focusing distance 1 6m Multiplication factor 100 Additive constant 0 Compensator Working range 14 Setting accuracy 0 3 Circula...

Page 6: ...plate 6 Telescope eyepiece 2 Footscrew 7 Press button 3 Horizontal drive endless 8 Circular level 4 Telescope objective housing 9 Prism for viewing circular level 5 Optical sight 10 Focussing knob wit...

Page 7: ...50 Provided the circular bubble 8 sensitivity 8 per 2mm has been set in its setting circle by turning the three footscrews 2 The line of sight will be automatically horizontal as the pendulum will be...

Page 8: ...al eyepiece The reticle has wedged shaped hairs for precise leveling with the parallel plate micrometer and a single horizontal hair for normal leveling staffs It also has 1 100 stadia hairs 6 2 The f...

Page 9: ...od head 5 Instructions for Use 5 1 Unpacking and Setting Up When setting up the tripod The legs must be trodden firmly into the ground The tripod head should be as horizontal as possible and height sh...

Page 10: ...turning the instrument by hand the telescope is pointed roughly at the Leveling staff Turn the focusing knobs 10 which have coarse and fine motion Until the staff image appears sharp and free from par...

Page 11: ...top line To level up the instrument until the circular level lies in the centre of its setting circle 6 Measuring Before starting field work or after longer periods of storage transport of your equipm...

Page 12: ...crease from the bottom to the top in the field of view 3 Take the nearest whole centimeter value from the graduation below the horizontal cross hair 114cm and estimate the millimeters within the centi...

Page 13: ...3m Upper stadia A1 1 216m Lower stadia A2 1 068m 1 2 A1 A2 1 142m Should the telescope image tremble due to ground vibrations or a strong wind the observer can reduce the effects by holding the tripod...

Page 14: ...nstrument to the staff see fig 3 ESL2 field of view with leveling staff Height reading from horizontal hair 1 143m Example Upper stadia A1 1 216m Lower stadia A2 1 068m A1 A2 0 148m 100 Horizontal Dis...

Page 15: ...accuracy the ESL2 is used with the parallel plate micrometer ESM1 The micrometer is slipped onto the telescope objective and locked in position by turning the locking knob Reading magnifier Micrometer...

Page 16: ...Procedure 1 Sequence of measurements is the same as with normal height leveling measurement 2 When reading the staff turn the micrometer knob until a graduation line is centered between the wedge sha...

Page 17: ...18 serves as a check Example above Staff reading 77cm Micrometer reading 0 556cm Height 77 556cm Fig 4...

Page 18: ...e legs just remain spread out 7 2 Circular Level fig 5 The tripod with instrument attached is set up on firm ground Using the three footscrews the circular bubble is centered exactly in the middle of...

Page 19: ...f the setting circle It is turned only until the bubble reaches the centre of the circle or until it can be set in the centre by means of the other screw It is necessary to complete the adjustment tha...

Page 20: ...mpensator with the press button readings a1 and a2 are taken to the staffs held at B and C with the instrument at D readings a3 to C and a4 to B are then taken If the line of sight is absolutely horiz...

Page 21: ...ading a4 differs from the computed correct value a4 by more than 2mm in 30m the whole procedure must be repeated If the difference is confirmed the line of sight must adjusted as described Fig 6 Testi...

Page 22: ...ke a more precise adjustment 7 3 2 Adjusting Fig 6 and Fig 7 Fig 7 Adjusting the line of sight The instrument is still at D The line of sight is adjusted by shifting the reticule plate slightly This i...

Page 23: ...the adjustment 8 Care and Transport 8 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 conta...

Page 24: ...tment After transport inspect the field adjustment parameters given in this user manual before using the product 8 2 Storage Product Respect the temperature limits when storing the equipment particula...

Page 25: ...a clean soft lint free cloth for cleaning If necessary moisten the cloth with water or pure alcohol Do not use other liquids these may attack the polymer components Damp products Dry the product the...

Page 26: ...27 NOTE These designs figures and specifications are subject to change without notice We shall not be held liable for damages resulting from errors in this instruction manual...

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