DIGITAL LASER DISTANCE METER

LD05-HTGF
with glass-fiber coupled remote optical head

The RIEGL LD05-HTGF is a laser
distance meter based on precise timeof-flight laser range measurement
especiallysuitedfor
demandingapplications under critical environmental
conditions, i.e. high ambient temperatureor hazardous environment. It is
additionally optimized for very hightarget temperatures.
It uses state-of-the-art digital signal
processing to enable precise distancemeasurement for complex multi-target
situations even under bad visibility
conditions. Digitizing the echo signal andsubsequent 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

www.riegl.com

Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 1 of 13

General Description LD05-HTGF
Principle of Operation
data i/ocontrol / communication
processor
transmitter
onlinefull waveform analysis

analogreceiverdigitalelectronics unit

TargetTransmitter lensReflection
coefficient r
Receiver lens

optical headAn electrical pulse generator periodically drives a semi¬conductor laser transmitter, emitting
infrared light pulses, which are fed into a glass fiber cable. The pulses are guided to theoptical head and collimated by the transmitter lens. Part of the echo signal reflected by thetarget is coupled into the glass fiber cable via the receiver lens and guided back to theelectronics unit.
A 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-HTGF 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.

www.riegl.com

Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 2 of 13

General Description LD05-HTGF
Main Applications•••

Distance and level measurements
in high-temperature areas
Level measurement of liquid steel
in melting pots or in transfer ladles
Robotic applications
in nuclear power plants•

Measurement of the position, width,
and thickness of glowing slabs
in rolling mills

The LD05-HTGF is optimized for measuring very hot and glowing targets in steel plants,rolling mills, foundries etc.:
Transmitter and receiver optics are equipped with narrow-band optical filters to avoid
disturbances of the measurement caused by the radiation of light and heat from the hottarget surface. If necessary the front side can be equipped with an additional protection tube,
which can be flushed with nitrogen or compressed air to keep the lenses clean.

www.riegl.com

Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 3 of 13

General Description LD05-HTGF
Digitizing the echo signal and analyzing it allows excellent clutter suppression underdemanding environmental conditions, i.e., in the presence of dust, smoke or fumes.
To meet different application challenges, user parameters as measurement rate, maximum
target count (first target only, last target only, all targets) or sensitivity are adjustable.
Standard Interfaces:•WEB Interface for configuration via WEB browser•

LAN TCP/IP ports•

RS232 / RS422 port

Optional Industrial Interfaces:••Analog output 4 – 20 mA
Digital switching output (2x)

Optional Infrared Radiation Channel:
With this option the LD05-HTGF also measures the infrared radiation received in a welldefined wavelength band emitted by the targets within the solid angle of the measurement
beam with every range measurement. The output is proportional to the logarithm of thereceived infrared power and can be calibrated to give the target's surface temperature within
the range of 300°C to 1600°C.
Further key features of the LD05-HTGF are:
• Short infrared laser pulses providing excellent interference immunity• Narrow measurement beam with low divergence for excellent spatial resolution• Lightweight, with a stable metal housing, suitable for use in rough industrial
environments.

www.riegl.com

Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 4 of 13

Technical Data LD05-HTGF
The technical data can be influenced by the environmental conditions to a considerable
extent, especially by the following parameters and coniditions:• Surface temperature and reflection characteristics of the target• Distance to the target• Angle of incidence of the measurement beam
• Optical attenuation of the gases between target and instrument

Specifications
LD05-HTGF
in combination with
Optical Head MK36-XX
Measurement range in1)
High Penetration Mode
Optimized for
liquid steel,temperature up to 1600°C
Optimized forglowing slabs,
temperature up to 1450°C
Optimized forother targets,
temperature up to 1000°C

3 m to 10 m

2 m to 35 m

2 m to 100 m

Examples for integrated predefined measurement programs:
High Penetration Mode
Measurement accuracy
Measurement rate2)

3)

Measurement rate

1)
2)
3)

typ. ± 10 mm
typ. 100 Hz
LD05-HTGF
in combination with
Optical Head MK36-XX

Fast Mode
Measurement accuracy

LD05-HTGF
in combination with
Optical Head MK36-XX2)typ. ± 15 mm
typ. 1000 Hz

Depending on the surface temperature and the reflection coefficient of the target
One sigma @ 5 m range under RIEGL test conditions (except measurements at reflective foil / retro-reflective targets).
With self-adapting measurement time selected, the effective data update rate depends on the reflectivity of the target.

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Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 5 of 13

Technical Data LD05-HTGF
Laser Specifications
LD05-HTGF
in combination with
Optical Head MK36-XX
Wavelength
Beam divergencediameter of the infrared measuring beam
@ 3 m – 10 m
@ 50 m@ 100 mLaser Product Classificationaccording toIEC 60825-1:2007
The following clause applies for instruments
delivered into the United States:
Complies with 21 CFR 1040.10 and 1040.11
except for deviations pursuant toLaser Notice No. 50, dated June 24, 2007.

www.riegl.com

near infraredapprox. 30 mm
approx. 120 mm
approx. 240 mm

Class 1

CLASS 1LASER PRODUCT

Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 6 of 13

Technical Data LD05-HTGF
Electrical Data
LD05-HTGF
in combination with Optical Head MK36-XX
Data interfaces
Data port
Configuration port
WEB Interface
Power supply

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

Power consumption
Optional
Analog Output

Switching Output

1)
2)

18 W
1)

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

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

Operating range selectable via TCP/IP port or serial interface.
Switching points adjustable via TCP/IP port or serial interface.

www.riegl.com

Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 7 of 13

Technical Data LD05-HTGF
Physical Data
LD05-HTGF

Electronics Unit
Main dimensions (L x W x H)

245.5 x 130 x 98 mm

Weightapprox. 2.8 kg

Protection classglass-fiber cables attached

IP64

Temperature range
OperationStorage+15°C up to +50°C
1)-20°C up to +60°C

Mounting

Flanges on both sides1)

1)

The life expectancy (MTBF) of the instrument is reduced in case of operation and/or storage at high temperatures.

Optical Head

MK36

MK36-Z65

MK36-PT

MK36-HT

Main dimensions(L x W x H)

120x80x50 mm

133x ∅65 mm

500x120x70 mm

655x ∅285 mm

Weight0.67 kg

0.4 kgapprox. 4.4 kg

10.0 kgProtection classglass-fiber
cablesattached

IP62

IP 62

IP62

IP64

Temperature range
Operation
Storagewww.riegl.com-20°C up to +80°C-20°C up to +80°C

Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 8 of 13

Technical Data LD05-HTGF
Dimensional Drawings

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Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 9 of 13

Technical Data LD05-HTGF
Remote Optical Head MK36:
case:
main dimensions:weight:protection class:temperature range:

www.riegl.com

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-HTGF, 2016-01-22
page 10 of 13

Technical Data LD05-HTGF
Remote Optical Head MK36-Z65:
case:main dimensions:weight:protection class:temperature range:

www.riegl.com

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

Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 11 of 13

Technical Data LD05-HTGF
Remote Optical Head MK36-PT:
case:main dimensions:weight:protection class:temperature range:
recommended air pressure:www.riegl.com

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

Data sheet, RIEGL LD05-HTGF, 2016-01-22
page 12 of 13Technical Data LD05-HTGF
Remote Optical Head MK36-HT:
case:main dimensions:weight:protection class:temperature range:
recommended air pressure:aluminium, colorless anodized
655 x ∅ 285 mm
10 kg
IP64 (glass fiber cables attached)-20° to +80° C (operation and storage)
2 – 4 bar

Information contained herein is believed to be accurate and reliable. However, no responsibility is assumed by RIEGL LMS for itsuse. Technical data are subjected to change without notice.
LD05-HTGF 2016-01-22, page 13 of 13
RIEGL Laser Measurement Systems GmbH, 3580 Horn, Austria
Tel.: +43-2982-4211, Fax: +43-2982-4210, E-mail: office@riegl.co.at
RIEGL USA Inc., Orlando, Florida 32819, USA
Tel.: +1-407-248-9927, Fax: +1-407-248-2636, E-mail: info@rieglusa.com
RIEGL Japan Ltd., Tokyo 1640013, Japan
Tel.: +81-3-3382-7340, Fax: +81-3-3382-5843, E-mail: info@riegl-japan.co.jp