eLXg {bNX: Information of Sensors on JKEO5


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The most sensors on JKEO5 are as same as on JKEO2, JKEO3, JKEO4 and TRITON buoy. The table below identifies the types of sensors used on JKEO5 moorings and lists their specifications. As same as JKEO4, JKEO5 has additional meteorological sensor, Vaisala Weather Transmitter WXT520, as a backup system.

Last updated on May 23, 2011

Measurement

Sensor type

Manufacturer: Model #

Resolution

Range

Accuracy

Ref.

Wind speed

R.M. Young 5103 wind monitor

Star Engineering:@ ASIMET Propeller and Vane Wind Module (WND)

0.01 m s-1

0 to 60 m s-1 (threshold ca. 1 m s-1)

}1 %

[1]

Wind direction

R.M. Young 5103 wind monitor

Star Engineering:@ ASIMET Propeller and Vane Wind Module (WND)

0.1

0 to 360

3

[1]

Air temperature

Rotronic MP-101A sensor

Star Engineering:@ ASIMET Relative Humidity & Air Temperature Module (HRH)

0.02C

-22 to 50 C (Note: 1)

}0.05 C

[1]

Relative Humidity

Rotronic MP-101A sensor

Star Engineering:@ ASIMET Relative Humidity & Air Temperature Module (HRH)

0.01 % RH

0-100 % RH

}1 % RH

[1]

Barometric Pressure

Drug Model PMP4000

JAMMET-BAR Model PMP4000

0.05 hPa

850 to 1050 hPa (Note: 1)

0.1 hPa.

Precipitation

RM Young 50203 Precipitation gauge

JAMMET-RAN Model Y50203

1 mm (threshold)

0 to 500 mm

}1 mm

Downwelling shortwave radiation

Eppley Precision Spectral Pyranometer (PSP)

Star Engineering:@ ASIMET Shortwave Radiation Module (SWR)

0.1 W m-2

0 to 1400
W m-2
(Note: 1)

2 W m-2

[1]

Downwelling longwave radiation

Eppley Precision Infrared Radiometer (PIR)

Star Engineering:@ ASIMET Longwave Radiation Module (LWR)

0.1 W m-2

0 to 700
W m-2

2 W m-2

[1]

Sea Bird SBE37-SM (MicroCAT) etc.

Sea surface and subsurface temperature

ultra-stable aged thermistor

Sea Bird Electronics: SBE37-SM (MicroCAT),
SBE39-IM,
SBE37-IM

0.0001C

-3 to 33 C (Note: 2)

}0.002C


[2]
[4]
[3]

Sea surface and subsurface Salinity

ultra-precision Wien-Bridge oscillator

Sea Bird Electronics: SBE37-SM (MicroCAT),
SBE37-IM

0.00001
S m-1

0 to 6.5
S m-1
(Note: 2)

}0.0003
S m-1


[2]
[3]

Water pressure

Druck sensor

Sea Bird Electronics: SBE37-SM (MicroCAT),
SBE39-IM

0.002% FS

 

7000 m

1000 m

}0.1% FS


[2]
[4]

NORTEK Aquadopp current meter (IM400)

Current velocity

the Doppler shift measurement

NORTEK

---

} 3m/s (Note: 2)

1% of measured value } 0.5 cm/s

[6]

Temperature

Thermistor embedded in head

NORTEK

0.01C

–4C to 40C

0.1C

[6]

Pressure

Piezoresistive

NORTEK

Better than 0.005% of full scale per sample

0 to 400 m

0.5% full scale per sample

[6]

Vaisala Weather Transmitter WXT520

Wind speed

---

Vaisala WINDCAP®sensor

0.1 m/s

0 to 60 m/s

}0.3 m/s or }3%, whichever is greater

[5]

Wind direction

---

---

---

---

---

Not available

Air temperature

---

---

0.1 C

-52 to@ +60 C

}0.3 C

[5]

Relative Humidity

---

---

0.1 %RH

0 to 100 %RH

}3 %RH within
0 to 90
%RH

[5]

Barometirc pressure

---

---

0.1 hPa

600 to 1100 hPa

}0.5 hPa at 0 ... 30 C

[5]

Precipitation

---

Vaisala RAINCAP® Sensor

0.01 mm

0 to 200 mm/h

5%

[5]

 

Note:

1)    limited by data logger specification

2)    Applied only for real-time data due to data logger specification

 

References

[1] http://frodo.whoi.edu/asimet/asimet_module_specs.html,
@@
http://www.whoi.edu/instruments/viewInstrument.do?id=12827,
@@ http://www.whoi.edu/instruments/viewInstrument.do?id=14686#15228

[2] http://www.seabird.com/products/spec_sheets/37smdata.htm

[3] http://www.seabird.com/products/spec_sheets/37imdata.htm

[4] http://www.seabird.com/products/spec_sheets/39imdata.htm

[5] http://www.vaisala.com/files/WXT520_Datasheet_in_English.pdf

[6] http://www.nortekusa.com/lib/data-sheets/datasheet-aquadopp

 


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Ocean-Atmosphere Interaction Research Team,

Ocean Climate Change Research Program,

Research Institute for Global Change (IORGC),

Japan Agency for Marine-Earth Science and Technology (JAMSTEC)

2-15 Natsushima-cho Yokosuka-city, Kanagawa, 237-0061, Japan

JKEO web master
OCCRP
RIGC
JAMSTEC