HT DM40 Manuel utilisateur

Copyright HT ITALIA 2013 Release EN 1.00 - 09/09/2013

ENGLISH

User manual

DM40

EN - 1

Table of contents

1.PRECAUTION AND SAFETY MEASURES………………… 2

2.PREPARATION FOR USE…………………………………….4

2.1.Initial checks................................................................................4

2.2.Instrument power supply.............................................................4

2.3.Storage........................................................................................4

3.INSTRUMENT DESCRIPTION………………………………..5

3.1.Description of the controls...........................................................5

3.2.Display description ......................................................................6

3.3.General description of the instrument .........................................7

4.OPERATING INSTRUCTIONS………………………………..8

4.1.Initial operations and settings......................................................8

4.2.Setting of measuring reference...................................................8

4.3.Distance measurement ...............................................................9

4.4.Continuous distance measurement.............................................9

4.5.Additions / subtractions of measures ........................................10

4.6.Area measurement....................................................................11

4.7.Volume measurement ...............................................................12

4.8.Indirect 2-point measurement....................................................13

4.9.Indirect 3-point measurement....................................................14

4.10.Operations with the memory .....................................................15

5.MEASURING CONDITIONS…………………………………16

6.REPLACING INTERNAL BATTERIES……………………...16

7.ERROR MESSAGES ON THE DISPLAY…………………..17

8.TECHNICAL SPECIFICATIONS…………………………….18

8.1.Technical characteristics...........................................................18

8.2.Reference standards.................................................................18

9.ACCESSORIES PROVIDED………………………………...18

10.SERVICE……………………………………………………….19

10.1.Warranty conditions...................................................................19

DM40

EN - 2

1. PRECAUTION AND SAFETY MEASURES

The instrument has been designed in compliance with

the directives relevant to electronic measuring

instruments. For your safety and in order to prevent

damaging the instrument, please carefully follow the

procedures described in this manual and read all notes

preceded by the symbol with the utmost attention.

CAUTION

In case the instrument is used in a way

different from the one described in this

user manual, this could result in a

failure of the protections the instrument

is provided with.

CAUTION

When this symbol is displayed, the

instrument is not able to emit a laser

pointer. Always prevent the laser

from radiating to your eyes, in order

to prevent any injury. Class II laser

device compliant with EN 60825-1

DM40

EN - 3

In this manual, and on the instrument, the following

symbols are used:

Warning: observe the instructions given in

this manual; improper use could damage

the instrument or its components

Warning: always prevent the

laser from radiating to your eyes,

in order to prevent any injury

The instrument and its

accessories must be collected

separately and correctly

disposed of in the appropriate

containers

DM40

EN - 4

2. PREPARATION FOR USE

2.1. Initial checks

Before shipping, the instrument has been checked

from an electric as well as mechanical point of view.

All possible precautions have been taken so that it is

delivered undamaged.

However, we recommend generally checking the

instrument in order to detect possible damage suffered

during transport. In case anomalies are found,

immediately contact the forwarding agent.

We also recommend checking that the packaging

contains all components indicated in § 9. In case of

discrepancy, please contact the Dealer.

In case the instrument should be returned, please

follow the instructions given in § 10.1

2.2. Instrument power supply

The instrument is supplied with two 1.5V AAA LR03

batteries, included in the package. Battery life equals

about 5000 measurements. The “ “ symbol

flashes on the display when the battery is flat. Replace

the battery by following the instructions given in § 6

2.3. Storage

In order to guarantee precise measurement, after a

long storage time under extreme environmental

conditions, wait for the instrument to come back to

normal condition (see § 8.1). Given its simplicity, the

instrument does not need any periodic calibration.

DM40

EN - 5

3. INSTRUMENT DESCRIPTION

3.1. Description of the controls

Fig. 1: Instrument description

Caption Description

1 ON/MEAS key

2 Area/Volume key

3 Key for indirect distance measurement

4 Key for single/continuous distance

measurement

5 “+” key

6 “-” key

7 Key for saving measurement results

8 Reference setting key

9 Backlight/Measuring unit key

10 OFF/CLR key

DM40

EN - 6

3.2. Display description

Fig. 2: Description of the symbols at display

Caption Description

1 Active laser

2 Front reference

3 Rear reference

Type of measurement:

Area measurement

Volume measurement

Indirect 2-point measurement

Indirect 3-point measurement

5 Single distance measurement

6 Battery charge level

7 Memory for partial data saving

8 Instrument error message

9 Max and Min measurements in

continuous mode

10 First measurement partial value display

11 Second measurement partial value

display

12 Last measurement value display and

result

DM40

EN - 7

3.3. General description of the instrument

DM40 has the following functions:

Direct measurement of distances expressed in

m/in/ft and ft+in

Measurement of area and volume

Indirect 2- and 3-point distance measurement

(Pitagora)

Distance measurement in continuous mode

Sum/difference of measured distance values

Setting of measuring reference

Activation of the laser pointer for measurement

Partial operations with use of internal memory (max

20 locations)

Display backlight

The model is provided with a comfortable membrane

keyboard with 10 function keys and a class II laser

pointer for a precise definition of the application point.

The measurement of distance between two points

(with a measuring range from 5cm to 40m) is carried

out by reflection of the laser light from the surface hit

to the receiving sensor located in the upper part of the

instrument.

Measurement can be influenced by the brightness of

the environment in which it is performed and by the

type of surface hit by the laser pointer.

DM40

EN - 8

4. OPERATING INSTRUCTIONS

4.1. Initial operations and settings

Press the key to switch on the instrument and

the laser pointer. Press and hold the key to

switch off the instrument.

Press the key to clear (CLR) the last datum

shown on the display.

Press the key to see the saved distance values.

Press the and keys at the same time to

delete the temporary memory's content. The value

“0” is shown on the display.

Press the key to activate/deactivate the

backlight of the display.

Press and hold the key to activate the section

for setting distance measuring units. Cyclically press

the key to select the options: “m”, “ft”, “in” and

“ft+in”

4.2. Setting of measuring reference

In order to perform correct measurements, it is

important to define beforehand the measuring

reference on the instrument by pressing the key.

Possible options are (see the following figure):

Top measurement is carried out by the upper

part of the instrument.

Bottom measurement is carried out by the lower

part of the instrument and therefore also the whole

instrument length is considered (default condition)

“Bottom” reference “Top” reference

DM40

EN - 9

4.3. Distance measurement

1. With the instrument in stand-by, press the key

to activate the laser pointer

2. Use the laser pointer to precisely determine the

measuring point, keeping the instrument as

perpendicular as possible with respect to the

surface of the object to be measured

3. Press the key again for measuring. The value

will be displayed in the selected measuring unit

(see § 4.1) and the result will be automatically

saved in the memory area

4.4. Continuous distance measurement

Upon start-up, the instrument is set to normal mode or

measuring the distance between 2 points. Continuous

measuring mode allows for a dynamic management of

the distance and the display of the maximum and

minimum measurement values.

1. With the instrument in stand-by, press the key

to select the desired type of reference (see § 4.2)

2. Press and hold the key to activate the

continuous measuring mode. The indications “Min”

and “Max” are shown on partial displays

3. Press the or OFF/CLR key to stop continuous

measurement. The function is automatically

stopped after approx. 20s

4. The minimum and maximum value of distance are

shown in the partial displays while continuous

measurement is shown dynamically when moving

the instrument (see Fig. 3) in the resulting display

Fig. 3: Examples of continuous measurements

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