Typical measuring accuracy:
These values refer to average measuring
conditions and are not valid for tracking mode (continuous measuring) nor
for
the functions and computations of the Leica DISTO™ pro4, Leica DISTO™ pro4 a.
Maximum measuring error:
Results from unfavorable measuring conditions.
Measuring accuracy is specified according to ISO-recommendations
ISO/R
1938-1971. The statistical confidence is 95% (± 2x standard deviation).
Measuring accuracy is specified in accordance with
ISO-recommendation ISO/R 1938-1971, with a statistical safety
of 95% (2s, i.e. two-fold standard deviation). Typical measuring
accuracy is based on average measuring conditions
within the specified measurement range. It is not valid for
special application functions and calculations, such as
Pythagoras and is not valid in tracking mode (continuous
tracking). For more details:
Measuring accuracy.
Favorable/average measuring conditions:
- Materials with good reflecting characteristics, meaning they reflect the
laser beam in a divergent
(not mirrored!) manner.
- Laser dot is brighter than the ambient light.
- Operating within the allowable temperature range (-10° + 50° C).
Unfavorable measuring conditions:
- Highly reflective surfaces
- Highly absorbing surfaces, such as wet or dark surfaces.
- Operating at the limits of the allowable temperature range.
- Not waiting for temperature calibration.
- Very intensive ambient light.
- Shimmering.
- For optical and safety reasons, do not measure against colorless liquids
(water) or glass.
The tolerance is not proportional to the measured distance,
it is the same over the entire distance. However, over
long distances,
additional errors of +/-5 ppm (parts per million) (+/-0.5mm/100m) come into
play.
In bad weather
or at dawn it is not a problem, when the sun shines the laser dot may no longer
be clearly
discernable. For distances up to 15 m we recommend our laser
protective glasses. Through the red glass the laser
point can be seen more
distinctly.
The more professional approach is our telescopic viewfinder with 4x
magnification. Measurements of over 100 m can
be made. You don’t have to see the
laser dot, the cross hairs on the lens act as the aiming device.
Distance measuring with
Leica DISTO™ follows the phase
measuring procedure and not the runtime principal, and
is therefore accurate to
the millimeter. The laser is modulated and the position of a standing wave is
measured (the
phase difference between emitted and returned wave using three
frequencies).
No. The only way is using a digital-to-analog converter.
Measure room height with the time delay trigger. In
Pointing mode the timer can be started with the x-key. Place
the Leica DISTO™ on
the floor and wait until it has triggered the measurement. The measured value is
then visible
in the display. You can also add partial heights together very
easily.
I have to monitor our measurement equipement.
What can I do?
Monitoring of measuring equipment for Leica DISTO™
–users who perform the required monitoring themselves,
in accordance with their quality management systems -
please
click here.
Use
the Leica DISTO™ in minimal tracking mode to obtain the shortest distance.
To
keep the instrument steady and to aim properly, use the time delay function.
Yes, but be
aware that the result is more of an estimate than an exact measurement. To
obtain good results use a
tripod. To keep the center of rotation steady, we
offer special adapter plates.
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