Manual Bosch GLM 80 (page 26 of 319) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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26 | English

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Accuracy Check of the Distance Measurement

The accuracy of the distance measurement can be checked as

follows:

– Select a permanently unchangeable measuring section

with a length of approx. 1 to 10 metres; its length must be

precisely known (e.g. the width of a room or a door open-

ing). The measuring distance must be indoors; the target

surface for the measurement must be smooth and reflect

well.

–Measure the distance 10 times after another.

The deviation of the individual measurements from the mean

value must not exceed ±2 mm (max.). Log the measure-

ments, so that you can compare their accuracy at a later point

of time.

Working with the Tripod (Accessory)

The use of a tripod is particularly necessary for larger distanc-

es. Position the measuring tool with the 1/4" thread 19 onto

the quick-change plate of the tripod 26 or a commercially

available camera tripod. Tighten the measuring tool with the

locking screw of the quick-change plate.

Set the corresponding reference level for measurement with

a tripod by pushing button 10 (the reference level is the

thread).

Working with the Measuring Rail (see figures I–K)

The measuring rail 24 can be used for a more accurate grade

measurement result. Distance measurements are not possi-

ble with the measuring rail.

Place the measuring tool into the measur-

ing rail 24 as shown and lock the measur-

ing tool with locking lever 25. Press the

measuring button 2 to activate the “Meas-

uring rail” operating mode.

Regularly check the accuracy of the grade

measurement by carrying out a reversal measurement or with

the spirit levels of the measuring rail.

In case of greater deviation, the measuring tool must be recal-

ibrated. For this, press and hold the grade measurement but-

ton 3. Follow the directions on the display.

To end the “Measuring rail” operating mode, switch the meas-

uring tool off and remove it from the measuring rail.

Troubleshooting – Causes and Corrective

Measures

Cause Corrective Measure

Temperature warning indicator (k) flashing; measure-

ment not possible

The measuring tool is outside the

operating temperature range from

– 10 ° C to + 50 °C (in the function

continuous measurement up to

+40 °C).

Wait until the measuring

tool has reached the op-

erating temperature

“ERROR” indication in the display

Addition/Subtraction of measured

values with different units of

measure

Only add/subtract

measured values with

the same units of

measure

The angle between the laser beam

and the target is too acute.

Enlarge the angle be-

tween the laser beam

and the target

The target surface reflects too

intensely (e.g. a mirror) or insuffi-

ciently (e.g. black fabric), or the

ambient light is too bright.

Work with the laser tar-

get plate 28 (accessory)

The laser beam outlet 16 or the

reception lens 17 are misted up

(e.g. due to a rapid temperature

change).

Wipe the laser beam out-

let 16 and/or the recep-

tion lens 17 dry using a

soft cloth

Calculated value is greater than

999999 m/m

Divide calculation into

intermediate steps

Indication “>60°” or “<–60°” on the display

The inclination measuring range

for the measuring mode and/or

the reference plane has been

exceeded.

Carry out the measure-

ment within the speci-

fied angle range.

“CAL” and “ERROR” indication in the display

The calibration of the grade meas-

urement was not carried out in the

correct sequence or in the correct

positions.

Repeat the calibration

according to the instruc-

tions on the display and

in the operating instruc-

tions.

The surfaces used for the calibra-

tion were not accurately aligned

(horizontal or vertical).

Repeat the calibration

on a horizontal or verti-

cal surface; if required,

check the surface first

with a level.

The measuring tool was moved or

tilted while pressing the button.

Repeat the calibration

and hold the measuring

tool in place while press-

ing the button.

Battery charge-control indicator (g), temperature

warning (k) and “ERROR” indication in the display

Temperature of the measuring tool

not within the allowable charge-

temperature range

Wait until the charge-

temperature range is

reached.

OBJ_BUCH-1347-006.book Page 26 Friday, April 25, 2014 3:28 PM

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Bosch GLM 80 Manual

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