CST/BERGER SAL20N Manuel utilisateur

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PAL/SAL”N” Series

Automatic Level

INSTRUCTION MANUAL

2 • PAL/SALN AutoLevel

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PAL/SALN AutoLevel • 3

FEATURES (Fig. 1)

1. Base Plate

2. Horizontal Circle 8. Horizontal Drive Screw

3. Horizontal Circle Reference Mark 9. Leveling Screw

4. Compensator Lock 10. Circuclar Bubble Vial

5. Focusing Knobs 11. Vial Sighting Prism

6. Optical Peep Sight 12. Eyepiece Cover

7. Sunshade / Objective Lens 13. Eyepiece Focusing Knob

FEATURES

• Wire-hung, magnetically dampened compensator for optimum range

and accuracy.

• Compensator lock protects instrument during transport or storage; the

lock can also be used as a handy compensator checking tool.

• Large effective aperture and minimum focus of 0.3 m.

• Top-mounted optical peep-sight for quick reference.

• Large, easy-to-use precise focusing knob.

• Easy-to-read horizontal circle.

• Prism for easy bubble viewing.

• Sealed, dust-protected leveling screws.

• Water resistant, sealed construction plus sunshade for use in various

weather conditions.

• Fine adjustment knobs on left and right sides with friction-braked rota-

tion, endless horizontal drive.

• 1:100 stadia for distance estimation.

• 5/8” x 11 threads to fit standard tripods.

INTRODUCTION

Thank You for purchasing one of our Automatic Levels.

This manual includes specifications for the PAL and SAL”N” series auto

level. This instrument was carefully inspected and calibrated within tight tol-

erances before shipment. We properly package the instruments for ship-

ment, but we cannot control how the package is handled during shipment.

We advise that you check the instrument using the test shown in the Chapter

“Line-of-Sight” before using. “Measure Twice, Cut Once”...

After doing any job using any instrument, it is advised that you check your

work. To check your work, set up the instrument in a different location from

the place where you originally set up (approx. 16 m) and reshoot a few of

your original targets. The new readings should agree with the first readings.

If the new readings do not agree, you should have the instrument checked

by a CST/berger Authorized Repair Center, or try the Line-of-sight adjust-

ment.

USING THE INSTRUMENT

Setting up the instrument and centering the bubble

1. Set up the tripod and attach the level using the tripod mounting screw.

2. Adjust the tripod legs until the tripod head is roughly level. Center the

bubble within the vial by turning the leveling screws as shown in Fig. 2.

2a – Turn screws A and B to move the bubble to the right side.

2b – Turn screw C to center the bubble.

4 • PAL/SALN AutoLevel

Focusing the instrument

1. Focus the cross hairs (Fig. 3) by pointing the telescope towards a bright

background or holding a white sheet of paper in front of the objective

lens, then turning the eyepiece until the cross hairs are sharp and

black.

2. Focus the telescope by locating a target, such as a leveling rod, using

the optical peep sight. Looking through the eyepiece, use the focusing

knob to bring the target into sharp focus. Center the vertical hair within

the target using the horizontal drive knobs on either side of the instru-

ment.

Reading measurements using a leveling rod

Height reading

Read the rod where it is intersected by the horizontal hair. For example, the

height reading in Fig. 4 (Fig. 4/a) is 2.0 ft (1,195 m).

Distance measurement

Read the rod where it is intersected by the upper and lower stadia hairs; in

Fig. 4 (Fig. 4/a) these readings are at 1.9 ft and 2.1 ft (1,352 m and 1,038 m).

The stadia ratio is 1:100; therefore, the distance from the instrument to the

rod is: (2.1 - 1.9) x 100 = 20 feet - Fig. 4/a (1,352 – 1,038) x 100 = 31,41 m.

Angle measurement

As shown in Fig. 5, sight point A and rotate the horizontal circle until the ref-

erence mark is on “0”. Rotate the level and sight point B; the reference mark

will indicate the angle between A and B.

PAL/SALN AutoLevel • 5

CALIBRATION

Your Automatic Level has been factory calibrated; however, you should

occasionally check your level for errors caused by shipment or rough han-

dling.

Compensator lock button

Check the compensator for proper operation before use or anytime the oper-

ation of the instrument is in question. Push and release the compensator

lock button to shake the compensator. The compensator should return to the

exact horizontal position sighted before the lock button was pressed.

Circular bubble vial

Center the vial bubble using the leveling screws, then rotate the instrument

180°. The bubble should remain centered (Fig. 6). If the bubble moves out of

center, the vial needs adjustment (Fig. 7).

Turn the leveling screws to bring the bubble halfway to center (Fig. 8). Using

the Allen wrench, turn the two vial adjustment screws to center the bubble

(Fig. 9).

Repeat the above procedure until the bubble remains centered when the

level is rotated 180°.

Line-Of-Sight

The line-of-sight needs to be horizontal within 3 mm of level to be accurate.

Set up and level the instrument on a tripod midway between two leveling

rods set approximately 30m to 50m apart. Sight rods A and B; the height

readings are a1 and b1 (Fig. 10). The value “H” is equal to (a1 – b1). Move the

instrument to within 6 feet (2m) of rod A and re-level. Again sight rods A and

6 • PAL/SALN AutoLevel

PAL/SALN AutoLevel • 7

B; these height readings are a2 and b2 (Fig. 11).

If a1 – b1 = a2 – b2 = H, the line-of-sight is horizontal. If not, the level should

be adjusted as follows.

Because the instrument is set halfway between A and B, any error in the

line-of-sight causes both readings to be erroneous by the same amount.

Error “e” cancels out, so the value a1 – b1 = H is correct. Therefore, a2 – H =

b3, the adjusting value.

To adjust, unscrew the eyepiece cover. Turn the adjusting screw with the

adjusting pin (Fig. 12) until the horizontal cross hair gives the reading b3, on

rod B. Repeat the above Procedure until {(a1-b1) – (a2-b2)} </= 3 mm.

MAINTENANCE

Care must be taken to maintain the accuracy of the instrument.

• After each use, the instrument should be wiped clean and kept in its

carrying case.

• Remove dust from the lenses with a soft brush or a nonabrasive wipe.

Never touch the lenses with your fingers.

• Store the instrument in a dust-free area with low humidity.

• A bag of silica gel dryer is included with each instrument; if it has

stopped working effectively, bake it to remove moisture or replace with

a new bag.

• Any damage to the instrument must be repaired by a

CST/berger Authorized Service Center.

8 • PAL/SALN AutoLevel

TECHNICAL DATA

MMooddeellSSAALL2200NNSSAALL2244NNSSAALL2288NNSSAALL3322NNPPAALL2222PPAALL2266

MMaaggnniiffiicc..::20 x 24 x 28 x 32 x 22 x 26 x

Leevveelliinngg::1/8”@100’ 1/16”@150’ 1/16”@200’ 1/16”@250’ 3/32”@150’ 1/16”@200’

aaccccuurraaccyy(3mm/30m)(1,6mm/45m)(1,6mm/60m) (1,6mm/75m)(2,4mm/45m) (1,6mm/60m)

Woorrkkiinngg::200’ 300’ 350’ 400’ 300’ 350’

rraannggee(60 m) (90 m) (105 m) (120 m) (90 m) (105 m)

Clleeaarroobbjj..::36mm 36mm 40mm 40mm 36 mm 40 mm

aappeerrttuurree

SSeettttiinngg::+/- 0.8” +/- 0.8” +/- 0.5” +/- 0.3” +/- 0.8” +/- 0.5”

aaccccuurraaccyy

:2.5mm 2.0mm 1.5mm 1.0mm 2.0mm 1.5mm

nfor 1 km double-run leveling

Teelleessccooppee::

Image: erect Length: 8”(202mm) Shortest focusing distance: 1’ (0.3m)

Field of view : 1°20’ Stadia ratio: 100 Stadia addition: 0

Coommppeennssaattoorr::

Leveling range: +/- 15’ Magnet dampening: Yes

SSeennssiittiivviittyyooffbbuubbbbllee::8’/2mm

CCiirrcclleeggrraadduuaattiioonn::1° or 1 gon

WWaatteerrrreessiissttaanntt::Yes

IInnssttrruummeennttnneettwweeiigghhtt::1.8kg (4 lbs)

Moouunnttiinnggtthhrreeaadd::5/8“ x 11

WARRANTY

Five Year Warranty. CST/berger, a division of Stanley Works, warrants this

instrument against defects in material and workmanship for a period of five

years from the date of purchase. Deficient products will be repaired or

replaced at CST/berger's discretion. For warranty and repair information,

contact you local distributor.

For U.S., before returning the instrument to CST/berger, please

call (815) 432-5237 for a Return Authorization Number from our

Customer Service Department.

CST/berger's liability under this warranty is limited to repair or replacement

of the unit. Any attempt to repair the product by other thanfactory authorized

personnel will void this warranty. Calibration and maintenance are the

responsibility of the user. Where permitted by law, CST/berger is not respon-

sible for incidental or consequential damages.

Agents of CST/berger cannot change this warranty. CST/berger is not

responsible for damage resulting from wear, abuse, or alteration of this prod-

uct. The user is expected to follow ALL operating instructions.

This warranty may provide you with additional rights that vary by state,

province or nation.

IMPORTANT NOTE: The customer is responsible for the correct use and care

of the instrument. Moreover he is completely responsible for checking the

job along its prosecution, and therefore for the calibration of the instrument.

Calibration and care are not covered by warranty.

Subject to change without notice

PAL/SALN AutoLevel • 9

DESCRIPCIÓN DE LAS PARTES (Fig. 1)

1. Base 2. Círculo horizontal

3. Referencia para la graduación horizontal

4. Bloqueo del compensador 5. Enfoque del objetivo

6. Mira del objetivo ó punto de mira 7. Protector solar del ocular

8. Tornillos de movimiento horizontal 9. Tornillos de nivelación

10. Nivel esférico 11. Visor del nivel esferico

12 Protección del ocular 13. Enfoque del ocular

CARACTERISTICAS

• Péndulo compensador suspendido de amortiguación magnética provee

gran estabilidad y precisión.

• El bloqueo del compensador protege el instrumento durante el trans-

porte; el bloqueo se puede también utilizar para comprobar el fun-

cionamiento del compensador.

• Gran apertura efectiva y distancia de enfoque mínima de 0,3 m.

• Punto de mira puesto sobre el telescopio.

• Círculo horizontal exterior visible.

• Visor del nivel esferico

• Tornillos de nivelación protegidos contra agua y polvo

• Resistente al agua y al polvo

• Tornillos de movimiento fino situados a ambos lados con rotación frena-

da por fricción, rotación horizontal sinfín.

10 • PAL/SALN AutoLevel

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