Specifications - CL61

CL61 User Guide

Document code
M212475EN
Revision
E
Language
English
Product
CL61
Document type
User guide
Table 1. Measurement performance
Property Description/Value
Measurement range, cloud and backscatter 0 … 15 400 m (0 … 50 500 ft)
Reporting resolution 4.8 m (15.7 ft)
Measurement interval 5 s
Measurement accuracy against hard target ±5 m (16.4 ft)
Laser InGaAs diode
Laser wavelength 910.55 nm
Table 2. Data reporting
Property Description/Value
Atmospheric parameters

Cloud base heights (up to 5 layers)

Cloud depth and penetration

Precipitation/fog detection

Sky condition

Atmospheric profiles

Attenuated backscatter profile

Parallel and cross-polarized profiles

Depolarization ratio profile

Status information Internal monitoring data
Table 3. Inputs and outputs
Property Description/Value
Nominal voltage

120/230 V AC

3.1/1.6 A

Operating voltage 90 – 130 / 200 – 250 V AC
Overvoltage category CAT II
Operating frequency 50 … 60 Hz
Data interface Ethernet (> 10 Mbit/s)
Maintenance interface Ethernet
Message format NetCDF
Power consumption
With heating Max. 370 W
Without heating Max. 100 W
Table 4. Operating environment
Property Description/Value

Operating environment

Outdoor use

Use in wet location

Yes

Operating temperature

−50 … +55 °C (−58 … +131 °F)

Storage temperature

−50 … +60 °C (−58 … +140 °F)

Operating humidity

0 … 100 %RH

Maximum operating wind speed

60 m/s (134 mph)

Pollution degree for inside electronics

2

Maximum operating altitude

3000 m (approx. 9800 ft)

IP rating (when inside radiation shield, excluding window blower)

IP66: Dust-tight. Protected from powerful water jets from any direction.

NEMA rating (when inside radiation shield)

NEMA 4X: Dust-tight. Protected from corrosion and powerful water jets from any direction.

Table 5. Mechanical specifications
Property Description/Value
Dimensions (H × W × L) 1400 × 420 × 512 mm (55.12 × 16.54 × 20.16 in)
Weight, total 55 kg (121 lb)
Weight, radiation shield 23 kg (51 lb)
Weight, interface unit 12 kg (26 lb)
Weight, measurement unit 20 kg (44 lb)
Material Aluminum
Color White (RAL9003)
Coating Multi-layer coating to prevent environmental corrosion
Tilt angle Default: 3°
Table 6. CL61 transmitting specifications
Property Value
Laser source Indium gallium arsenide (InGaAs) diode laser
Laser wavelength 910.55 nm typical
Operating mode Pulsed
Nominal pulse properties at full range measurement
Maximum pulse energy 4.7 μJ
Typical pulse energy 3.9 μJ
Peak power 40 W
Maximum average power 50 mW
Pulse duration 160 ns FWHM
Pulse frequency 9.5 kHz
Typical beam divergence ±0.2 mrad × ±0.35 mrad
Table 7. CL61 receiving specifications
Property Value
Detector Silicon avalanche photodiode (APD)
Detector surface diameter 0.5 mm (0.02 in)
Receiver bandwidth 8 MHz (−3 dB)
Interference filter bandwidth 2.4 nm nominal
Transmissivity at 910.5 nm 90 % typical
Field-of-view divergence ±0.56 mrad
Polarization measurement

Single receiver method

2 orthogonal linear polarizers - parallel and cross polarizations

Table 8. Compliance
Property Description/Value

EU directives and regulations

EMC Directive (2014/30/EU)

Low Voltage Directive (2014/35/EU)

RoHS Directive (2011/65/EU) amended by 2015/863

EMC immunity

EN 61326‑1, industrial environment

EMC emissions

CISPR 32 / EN 55032, Class B

Electrical safety

IEC/EN/UL/CSA 61010‑1

Eye safety 1

Class 1M IEC/EN 60825‑1:2014

Compliance marks

CE, China RoHS, RCM, UKCA
Complies with ICAO frangibility requirements.
Figure 1. CL61 dimensions
1 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.