DIGITAL LASER DISTANCE METER

LD05-A10GF

with glass-fiber coupled remote optical head

The RIEGL LD05-A10GF is a multi-purpose laser distance meter based on precise timeof-flight laser range measurement especially suited for demanding applications under criticalenvironmental conditions (i.e. high ambient temperature, hazardous environment).
It uses state-of-the-art digital signal processing to enable precise distance measurement
for complex multi-target situations even under bad visibility conditions. Digitizing the echo
signal and subsequent analysis enables multi-target distance measurements.
The measuring system consists of an optical head meeting the requirements of therelevant application and a separate electronics box, connected by a duplex glass-fiber
cable of variable length with connectors on both sides.

•Electronics unit and measuring head can be mounted
separately according to requirements resulting from criticalenvironmental conditions•

Further improved measurement capability in demanding
situations causing poor visibility (rain, dust, fog).

•

Short infrared laser pulses providing excellent interference
immunity•

Narrow measurement beam with low divergence for excellent
spatial resolution•Measurement to almost any surface regardless of the angle ofincidence of the beam and the surface characteristics•

Significant enhancement of the maximum range based on predetection-averaging

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The LD05-A10GF can be configured for various application modes:• High Penetration Mode for complex target situations using a sequence of laser
shots, providing a self-adapting (rather low) data update rateSignificant enhancement of the maximum range based on Pre-Detection-Averaging• Fast Mode is a balanced mixture of the High Speed and High Penetration Modes,
which provides very high data update rate
• High Speed Mode for simple target situations and an extremely high data update
rate

Principle of Operation
data i/ocontrol / communication
processor
transmitter
onlinefull waveform analysis

analogdigitalreceiverelectronics unit

Transmitter lensAn electrical pulse generator
periodically drives a semiconductor laser transmitter,emitting infrared light pulses,
which are fed into a glass
fiber cable. The pulses areguided to the opticalhead and collimatedby the transmitterlens. Part of the echo
signal reflected by thetarget is coupled into
the glass fiber cablevia the receiverlens and guided backto the electronics
unit.
TargetReflection
coefficient ρ

optical head

Receiver lensA receiver converts the optical echo signal into an electrical signal, which is digitizedinternally and subsequently forwarded to a subsystem for on-line full waveform analysis.
Sophisticated algorithms for waveform analysis improve the instrument’s capabilities tomeasure the desired target even in the presence of smoke, fumes or dust.
Features and Advantages:•••The LD05-A10GF electronics unit can be combined with various optical heads tosuit nearly any requirement.
The optical head contains no electronics and is therefore extremely small, lightweight, inexpensive, high-temperature resistant, and insensitive to electromagnetic
or ionizing radiation.
The duplex glass-fiber cable connecting the electronics unit and the optical headprovides galvanic insulation between optical head and electronics box. Its length
can be specified with options ranging from 4m to more than 100m.

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Data Sheet, RIEGL LD05-A10GF, 2019-09-17
page 2 of 10

Technical Data LD05-A10GF
Performance Examples
LD05-A10GF ( equipped with MK36)High Penetration Mode
Measurement range 1)
for natural targets, ρ ≥ 80%
for natural targets, ρ ≥ 10%
reflector foil 2) & plastic cat´s-eye reflector
Minimum range

up to 250 m
up to 90 m
up to 1100 m
1m

Measurement accuracy 3) 4) 5) 6)

typ. ± 8 mm

Measurement precision 3) 7)

typ. ± 5 mm

Measurement rate 8)

typ. 100 Hz

Max. number of targets

5Fast Mode
Measurement range 1)
for natural targets, ρ ≥ 80%
for natural targets, ρ ≥ 10%
reflector foil 2) & plastic cat´s-eye reflector
Minimum range

up to 130 m
up to 45 m
up to 600 m
1m

Measurement accuracy 3) 4) 5) 6)

typ. ± 10 mm

Measurement precision 3) 7)

typ. ± 7 mm

Measurement rate
Max. number of targets

2500 Hz
5

High Speed Mode
Measurement range 1)
for natural targets, ρ ≥ 80%
for natural targets, ρ ≥ 10%
reflector foil 2) & plastic cat´s-eye reflector
Minimum range

up to 100 m
up to 35 m
up to 500 m
1m

Measurement accuracy 3) 4) 5) 6)

typ. ± 14 mmMeasurement precision 3) 7)

typ. ± 10 mm

Measurement rate
Max. number of targets
1)

2)
3)
4)
5)
6)
7)
8)

10000 Hz5

The following conditions are assumed• target is larger than footprint of laser beam, • perpendicular angle of incidence, • visibility 10 km• typical values for average ambient brightness conditions. In bright sunlight, the operational range is considerably
shorter than under an overcast sky. At dawn or at night the range is even higher.
Reflecting foil 3M DG4090 or equivalent, dimensions ≥ 0.45 x 0.45 m2 .
One sigma standard deviation @ 50 m range under RIEGL test conditions.
Plus distance dependent error ≤ ± 20 ppm.
Accuracy is the degree of conformity of a measured quantity to its actual (true) value.
Note, that fiber lengths in excess of 30 m may slightly degrade ranging accuracy.
Precision, also called reproducibility or repeatability, is the degree to which further measurements show the same result.
With self-adapting measurement time selected, the effective data update rate depends on the number of targets and theirreflectivity and distance.

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Data Sheet, RIEGL LD05-A10GF, 2019-09-17
page 3 of 10

Technical Data LD05-A10GF
Increasing Measurement Range
The measurement range can be increased by summing echo signals of multiple laser shots(pre-detection averaging) 1). The position of the target must be stable while a measurement isexecuted.
The following diagram shows the maximum measurement range versus pre-detection
averaging value without any atmospheric attenuation. Depending on atmospheric visibility,
the resulting maximum range can be further reduced.

1)

The following conditions are assumed• target is larger than footprint of laser beam, • perpendicular angle of incidence, • visibility 10 km• typical values for average ambient brightness conditions. In bright sunlight, the operational range is considerably
shorter than under an overcast sky. At dawn or at night the range is even higher.

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Data Sheet, RIEGL LD05-A10GF, 2019-09-17
page 4 of 10

Technical Data LD05-A10GF
Laser Specifications
LD05-A10GF (MK36)
Wavelength
Beam divergence 1)
Laser product classificationaccording toIEC 60825-1:2014
The following clause applies for instruments
delivered into the United States:
Complies with 21 CFR 1040.10 and 1040.11
except for conformance with IEC 60825-1 Ed.3.,
as described in Laser Notice No. 56, dated May
8, 2019.

1)

near infrared
2.4 mradLaser Class 1M

Viewing the laser output with certain optical instruments
designed for use at a distance(for example, telescopes and binoculars)
may pose an eye hazard.

Measured at the 1/e2 points.1mrad corresponds to 10 cm beam width per 100 m distance.

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Data Sheet, RIEGL LD05-A10GF, 2019-09-17
page 5 of 10Technical Data LD05-A10GF

General Technical Data – Electronics Unit
LD05-A10GF
Data interfaces
Data port
Configuration port
WEB interface
Power supply
Power consumption

TCP/IP, 10/100/1000 MBit port or RS232/RS422
TCP/IP, 10/100/1000 MBit port or RS232/RS422
TCP/IP
11 – 28 V DC, 24 VDC nominal
18 W

Main dimensions (L x W x H) mm

246x130x97

Weightapprox. 2.8 kg

Protection class

IP64

Temperature range
OperationStorage-10°C up to +50°C 1)-20°C up to +60°C 1)

Mounting

Flanges on both sides

Analog Output

4 – 20 mA 2), not galvanically isolated,
resolution 16 Bit, linearity 1 ‰ of full scale

Switching Output

2 x PNP transistor driver 3),
built-in thermal and short-circuit protection,
switching current 200 mA max.,
switching voltage = supply voltage

1)
2)
3)

The life expectancy (MTBF) of the instrument is reduced in case of operation and/or storage at high temperatures.
Operating range selectable via TCP/IP port or serial interface.
Switching points adjustable via TCP/IP port or serial interface.

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Data Sheet, RIEGL LD05-A10GF, 2019-09-17
page 6 of 10Technical Data LD05-A10GF
Dimensional Drawings LD05-A10GF

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Data Sheet, RIEGL LD05-A10GF, 2019-09-17
page 7 of 10

Technical Data Optical Heads
Remote Optical Head MK36:
case:
main dimensions:weight:protection class:temperature range:

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aluminium, black anodized
120 x 80 x 50 mm
0.67 kg
IP62 (glass fiber cables attached)-20° to +80° C (operation and storage)

Data Sheet, RIEGL LD05-A10GF, 2019-09-17
page 8 of 10

Technical Data Optical Heads
Remote Optical Head MK36-Z65:
case:main dimensions:weight:protection class:temperature range:

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aluminium, black anodized(stainless steel version on request)
137 x Ø 65 mm
0.4 kg
IP62 (glass fiber cables attached)-20° to +80° C (operation and storage)

Data Sheet, RIEGL LD05-A10GF, 2019-09-17
page 9 of 10

Technical Data Optical Heads
Remote Optical Head MK36-PT:
case:main dimensions:weight:protection class:temperature range:
recommended air pressure:aluminium, black anodized
500 x 120 x 70 mm
approx. 4.4 kg
IP62 (glass fiber cables attached)-20° to +80° C (operation and storage)
2 – 4 bar

Copyright RIEGL Laser Measurement Systems GmbH © 2019 – All rights reserved. Use of this data sheet other than for
personal purposes requires RIEGL’s written consent. This data sheet is compiled with care. However, errors cannot be fully
excluded and alternations might be necessary.
Data Sheet, RIEGL LD05-A10GF, 2019-09-17, page 10 of 10
RIEGL Laser Measurement Systems GmbH, 3580 Horn, Austria
Tel.: +43-2982-4211, E-mail: office@riegl.co.at, www.riegl.com
RIEGL USA Inc., E-mail: info@rieglusa.com, www.rieglusa.com
RIEGL Japan Ltd., E-mail: info@riegl-japan.co.jp, www.riegl-japan.co.jp
RIEGL China Ltd., E-mail: info@riegl.cn, www.riegl.cn
RIEGL Australia Pty Ltd., E-mail: info@riegl.com.au, www.riegl.com