CT75K CEILOMETER

Specification:

Owner  KNMI
Manufacturer  Vaisala
Dimensions  1.21 m x 0.76 m x 0.51 m
Weight  83 kg
Wavelength  905 nanometer (InGaAs laser diode) +/- 5 nm @ 25 °C
Receiver Type  Silicon Avalanch Photodiode, responsivity at 905nm: 65 A/W
Observation Angle  85° (adjustable)
Measurement Range  0 to 38400 ft (0 -11.25 km)
Range Resolution  100 ft (30 m)
Integration Time  30 s
   
   
   

Description:

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Processing:

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Products:

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History:

The CT75 has been in operation at Cabauw since mid nineties. Since 6 September 2003 the automatic amplification adjustment of the CT75 has failed. Therefore the backscatter data from that date onwards are more noisier than usual. On 30th of March 2004 the amplification has been reset but is still fixed.

Contact:

Henk Klein Baltink
KNMI
PO Box 201
3730 AE De Bilt
the Netherlands
Telephone: +31 30 2206476

References:

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Related links:

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Image:

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This site is maintained by Henk Klein Baltink