Hitachi HDM 40 User manual

Operating manual
Laser distance meter
Model: HDM 40

2
HDM 40
Table of contents
1. Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2. Prohibited use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Menu functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6. Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7. Message codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8. Techical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9. Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
10. Care and cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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14. Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
15. Exceptions from responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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3
HDM 40
Congratulations on the purchase of laser distance meter HITACHI HDM 40!
Permitted use
· Measuring distances
· Computing functions, e.g. areas, volumes, subtractions, Pythagorean calculation
Thesafetyregulationsandinstructionsalongwiththeoperatingmanualshouldbereadcarefullybeforeinitialoperation.
The person responsible for the instrument must ensure that equipment is used in accordance with the instructions. This
person is also accountable for the deployment of personnel and for their training and for the safety of the equipment
when in use.
Safety instructions
Please follow up instructions given in operators’manual.
Do not stare into beam. Laser beam can lead to eye injury (even from greater distances).
Do not aim laser beam at persons or animals.
The laser plane should be set up above eye level of persons.
Use the instrument for measuring jobs only.
Do not open instrument housing. Repairs should be carried out by authorized workshops only. Please contact your local dealer.
Do not remove warning labels or safety instructions.
Keep instrument away from children.
Do not use instrument in explosive environment.

4
HDM 40
Prohibited use
- Using the instrument without instruction
- Using outside the stated limits
- Using the instrument in explosive environment (gas station, gas equipment, chemical industry and so on)
- Deactivation of safety systems and removal of explanatory and hazard labels
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- Don’t shoot at others with the laser intentionally
- Don’t stare at the laser directly.
- Aiming directly into the sun
- Inadequate safeguards at the surveying site (e.g. when measuring on roads, construction sites, etc.)
- Using the instrument on the plane, near manufacturers, technological objects
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The instrument is a laser class 2 laser product with power < 1 mW and wavelength 635 nm.
START UP
Keypad
1 ON / Single measure / Continuous measure
2 Area / Volume / Pythagorean measure
3 Plus / Minus / Units
4 Reference / Illumination
4 Reference / Illumination
5 Clear / OFF
1
23
45

5
HDM 40
Display
1 Laser ON
2 Reference (front/rear)
3 Area /volume/ Pythagorean
4 Battery display
5 Units with exponents ( 2/3 )
6 Line 1
7 Line 2
Inserting / Replacing Batteries
Remove the battery cover, insert the battery correctly. Pay attention to correct polarity.
Close the battery compartment.
Replace the battery when symbol constantly blinks in the display.
Batteries should be removed in case of danger of corrosion, if the device will not be used for a long time.
MENU FUNCTIONS
Swtich on and off
Press the button (1) to switch on the instrument and laser. Press and hold key for about 2 seconds to start continuous measuring.
The device also switches off automatically after 3 minutes of inactivity i.e. no key is pressed within that interval. To switch off the
instrument press and hold button (5) 2 sec.
Reference Setting
Default reference setting is from the rear of the device. Press the button (4) to set the reference the front or the rear. When the end-
piece is folded out fully, the reference rear is set. You will see the reference symbol on the display.
1
2
3
4
5
6
7

6
HDM 40
Selecting Units
Press and hold the button (3) for 2 sec. until the desired unit is displayed.
Illumination
Press and hold the button (4) for 2 seconds to switch the illumination on or off.
Clear-Key
Cancel the last action. Press button (5).
MEASUREMENTS
Single distance measurement
Press button (1) to activate the laser. When in continuous laser mode, press this button to trigger the distance measurement directly.
Press again to trigger the distance measurement. The result is displayed immediately.
Continuous Measurement
Press and hold the button (1) for about 2 seconds to start continuous measuring.
FUNCTIONS
Addition / Subtraction
Distance measuring.
Press button (3): next measurement is added to the previous one.
Press button (3): next measurement is substracted from the previous one.
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7
HDM 40
Area
Press the button (2) once.The symbol is displayed.
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The result of measured area is displayed in the second line.
Addition / Subtraction of areas
Press button (2).
Area measuring – see Area.
Press button (3) to enter into the Addition / Subtraction mode.
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Press button (1) to take the second measurement (for example, width).
After the completion of area, press button (1), the result of substraction of areas is displayed in the second line.
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Volume
For volume measurements, press button (2) twice until the indicator for volume measurement appears on the display.
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Press button (1) to take the second measurement (for example, width).
Press button (1) to take the third measurement (for example, height).
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8
HDM 40
Indirect measurement
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surface and can’t be measured directly.
Make sure you adhere to the prescribed sequence of measurement:
• All target points must be in a horizontal or vertical plane.
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the instrument placed on a wall) or the instrument is mounted on a tripod.
• The minimum / maximum function can be used. The minimum value must be used for measurements at right angles to the target; the
maximum distance for all other measurements.
Indirect measurement – determing a distance using 2 auxilary measurements. E.g. When height and distance can’t be measured
directly.
Press button (2) 3 times. The symbol is displayed. The distance to be measured is blinking in the symbol triangle.
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Press button (1) to take distance measuring .
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Indirect measurement – measuring of right-angle edge length (using hypotenuse and right-angle edge length). E.g. When height
and distance can’t be measured directly.
Press button (2) 4 times. The symbol is displayed. The distance to be measured is blinking in the symbol triangle.
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Press button (1) to take distance measuring (either of the other two sides of the triangle) . The result of the measurement is displayed
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The result of the measurement is displayed in the second line.

9
HDM 40
Message codes
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INFO CAUSE REMEDY
204 &DOFXODWLRQRYHUÀRZ Repeat procedure
252 Temperature too high Cool down instrument
253 Temperature too low Warm up instrument
255 Receiver signal too weak Use target plate
256 Received signal too strong Use target plate (grey side)
257 Wrong measurement Use target plate (brown side)
258 Wrong initialization Switch on – off the instrument
ERROR CAUSE REMEDY
Error Hardware error Switch on/off the device several times and check if the
symbol still appears. If so please call your dealer for
assistance.

10
HDM 40
Technical data
Range, without target, m 0.05 to 40
Accuracy, mm ±1.5*
Smallest unit displayed 1 mm
Laser class 2
Laser type 635 nm, <1 mW
IPrating IP54
Automatic switch off 3 minutes of inactivity
Display illumination yes
Battery life, 2 xAAA > 5000 measurements
Dimensions, mm 116×54×35
Weight 155g
Temperature range:
Storage
Operating -25º to +70º 0º to +40º
* In favourable conditions (good target surface properties, room temperature).
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surfaces.