instruments:ceilo:ceilometer_jen
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instruments:ceilo:ceilometer_jen [2013/03/07 14:22] – rainer | instruments:ceilo:ceilometer_jen [2021/01/22 22:17] – external edit 127.0.0.1 | ||
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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 functions 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 | ||
- | | 03/2013 - today | [[http:// | + | | 03/2013 - today | [[http:// |
===== 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 | | ||
+ | | temporal resolution | 15sec | | ||
| 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