instruments:ceilo:ceilometer_jen
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instruments:ceilo:ceilometer_jen [2013/03/07 14:24] – rainer | instruments:ceilo:ceilometer_jen [2015/01/06 14:30] – [Data] anne | ||
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====== Ceilometer Jenoptik CHM15k Nimbus ====== | ====== Ceilometer Jenoptik CHM15k Nimbus ====== | ||
- | // | + | // |
===== Principle ===== | ===== Principle ===== | ||
- | A ceilometer | + | The CHM 15k ceilometer is a robust, autonomous |
===== Instrument ===== | ===== Instrument ===== | ||
{{: | {{: | ||
- | Current setup at [[http:// | + | CEILOMETER (CHM 15k) at [[http:// |
===== Data ===== | ===== Data ===== | ||
- | + | * If you are interested in receiving data please contact: [[http:// | |
+ | * [[http:// | ||
+ | * Current observations: | ||
+ | < | ||
+ | < | ||
+ | <a href=" | ||
+ | <img src=" | ||
+ | </ | ||
+ | </ | ||
+ | </ | ||
+ | |||
+ | The figure shows raw backscatter signal as a function of time and height. Red curves indicate cloud base heights and blue curves indicate aerosol layer heights as derived by the measurement software. | ||
===== History ==== | ===== History ==== | ||
^ Period | ^ Period | ||
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===== Specifications ===== | ===== Specifications ===== | ||
+ | |||
+ | See manual section 3, {{: | ||
+ | |||
^ Parameter | ^ Parameter | ||
| Wavelength | 1064 nm | | | Wavelength | 1064 nm | | ||
| Bandwidth | 0.1 nm | | | Bandwidth | 0.1 nm | | ||
+ | | Energy per pulse | 8µJ | | ||
+ | | Long-time stability over 12 month (prr) | < 10 % | | ||
+ | | Pulse to pulse variance of laser energy| < 3 % | | ||
| Pulse duration | 1 ... 5 ns | | | Pulse duration | 1 ... 5 ns | | ||
| Pulse repetition rate (prr) | 5 - 7 kHz | | | Pulse repetition rate (prr) | 5 - 7 kHz | | ||
+ | | Number of pulses per profile | 105650±100((varies in time)) | | ||
| Beam diameter | expanded to: 90 mm | | | Beam diameter | expanded to: 90 mm | | ||
| Laser divergence | < 0.3 mrad | | | Laser divergence | < 0.3 mrad | | ||
- | | Energy per pulse | 8µJ | | ||
- | | Long-time stability over 12 month (prr) | < 10 % | | ||
- | | Pulse to pulse variance of laser energy| < 3 % | | ||
| FOV Receiver | 0.45 mrad | | | FOV Receiver | 0.45 mrad | | ||
+ | | range gate length | 15m | | ||
| Voltage | 230VAC, +/- 10 % / 50 Hz | | | Voltage | 230VAC, +/- 10 % / 50 Hz | | ||
| Max. power consumption | 0,8 kW (all heater are running) | | | Max. power consumption | 0,8 kW (all heater are running) | | ||
+ | | Manufacturer | [[http:// | ||
| |
instruments/ceilo/ceilometer_jen.txt · Last modified: 2024/08/02 10:17 by jan