Specifications - CL61

CL61 User Guide

Document code
M212475EN
Revision
D
Language
English (United States)
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 1

Precipitation/fog detection 1

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 III
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
IP rating (when inside radiation shield, excluding window blower) IP66
Operating temperature

−55 … +55 °C (−67 … +131 °F)

Storage temperature −55 … +60 °C (−67 … +140 °F)
Operating humidity 0 … 100 %RH
Maximum operating altitude 3000 m (9800 ft)
Wind Up to 60 m/s (134 mph)
Pollution degree for inside electronics 2
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. Transmitter specifications
Property Value
Laser source Indium gallium arsenide (InGaAs) diode laser
Center wavelength 910.55 nm typical
Operating mode Pulsed
Nominal pulse properties at full range measurement
Pulse energy 4.2 μJ ±20 % (factory adjustment)
Peak power 26 W typical
Pulse duration 160 ns FWHM
Repetition rate 9.5 kHz
Average power 40 mW
Laser classification

Classified as Class 1M laser device in accordance with IEC/EN 60825‑1

Complies with 21 CFR 1040.10 and 1040.11 except for the deviations pursuant to the Laser Notice No. 56, dated July 26, 2001.

Beam divergence ±0.2 mrad × ±0.35 mrad
Table 7. Receiver 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

EMC immunity

EN 61326‑1, industrial environment

EMC emissions

CISPR 32 / EN 55032, Class B

Electrical safety

IEC / EN 61010‑1 2

Eye safety

Class 1M IEC / EN 60825‑1:2014

Compliance marks

CE, China RoHS, RCM, UKCA
Complies with ICAO frangibility requirements.
Figure 1. CL61 dimensions
1 Available later.
2 IEC / EN / UL / CSA 61010‑1 available later.