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Upper Air Simulator (UAS)

Test bed provided by KRISS

01. Development of Upper Air Simulator

      Temperature, Humidity, Pressure, Solar irradiance and Wind ventilation 

      Measurement system in RF mode

Temperature

02. Development of Radiosonde

      Dual Thermometer Radiosonde

      Solar correction equation for DTR

Humidity

03. Humidity standard at low Pressure

      Humidity generator at low pressure and temperature

      (1 kPa ~ 100 kPa, @-70 ℃)

      Measurement system using chilled-mirror hygrometer

04. Ultra low humidity at stratosphere

      Dual Quartz Crystal Microbalance (DQM)

SPECIFICATION

Temperature

Reference thermometer - Maker : GHM(PT100 Air thermometer)/ Range : -80℃ ~ 60℃ / Calibration : 50 mK

Liquid bath - Maker : Kambic / Range : -75 ℃ ~ 30 ℃ / Temperature stability : ±5 mk

Climate Chamber - Maker : Tenney / Range : -75 ℃ ~ 80 ℃ / Stability : ±0.4 ℃

Humidity 

Dry air generator - Maker : 1st stage(silica Gel + Molecule seive) + 2nd stage(Michell, PSD4-HPO) / Drying level : -99 ℃fp, 15, nmol/mol after 2nd stage

Liquid bathMaker : Kambic / Range : -75 ℃ ~ 30 ℃ / Temperature stability : ±5 mk

Low frost point generator - Maker : KRISS / Range : (-90 ~ 30 ℃fp) / Stability : ±0.05 ℃ / Calibration uncertainty : ±(0.2~0.05)℃

Air pressure 

Vacuum pump - Type : Rotary pump / Pumping capacity : (0~300)m3/h / pressure range : (0.5 ~ 1000) mbar

Vacuum gauge - Maker : INFICON / Range : (0~1333)mbar / Calibration uncertainty : 0.48 Pa

Wind velocity

pressure gauge - Maker : Mensor / Range :(0~7)bar / Calibration uncertainty : 0.0006%

Thermometer - Maker : GHM(PT100 Air thermometer) / Range : (0~50)℃ / Calibration uncertainty : 0.05℃

Sonic nozzle - Maker : KRISS / Nozzle diameter : (0.28, 0.40, 0.80, 1.12, 3.20)mm / Flow range : (3~569)L/min / Calibration uncertainty : 0.18%

Solar irradiance

Solar simulator - Maker : Newport / Lamp : 1 kW Xe Arc lamp (DC) / Optic path : Liquid crystal guide(L 1m, D 5mm)+Lens / Range : (0~1500) W/m2 /

                  Spatial uniformity : ±5% @ 40mm in diameter / Calibration uncertainty : 2%

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