Instrument calibrations
INstrument calibrations
This page lists details of instruments in use, their purchase date and where applicable their most recent calibration where known (for some elements, this is given in more detail on teh parameter page itself). Details of significant siting, logging or software changes are also shown on the pages for each element.
The only instruments in the Observatory that are routinely calibrated are the various temperature sensors.
| Sensor | Manufacturer | Date purchased | Manufacturer Calibration | In house Calibration |
| AIR TEMPERATURE | ||||
| Dry Bulb PRT | Campbell Scientific | 24/03/2014 | Summer 2014 | |
| Wet Bulb PRT | Campbell Scientific | 05/09/2014 | September 2014 | |
| HUMIDITY | ||||
| Relative Humidity | Rotronic | 23/03/2014 | March 2014 | |
| SURFACE TEMPERATURES | ||||
| Concrete PRT | Farnell | September 2009 | ||
| Grass PRT | Farnell | April 2014 | ||
| Soil PRT | Farnell | September 2009 | ||
| EARTH TEMPERATURES | ||||
| Temperature 5 cm PRT 003 | Vaisala | January 2010 | May 2011 | |
| Temperature 10 cm PRT 002 | Vaisala | January 2010 | May 2011 | |
| Temperature 20 cm PRT 005 | Vaisala | January 2010 | May 2011 | |
| Temperature 30 cm PRT 006 | Vaisala | January 2010 | May 2011 | |
| Temperature 50 cm PRT 007 | Vaisala | January 2010 | May 2011 | |
| Temperature 100 cm PRT 008 | Vaisala | January 2010 | May 2011 | |
| PRECIPITATION | ||||
| Rainfall | Environmental Measurements | August 2014 | June 2014 | |
| BAROMETRIC PRESSURE | ||||
| Station level pressure | Druck | See parameter web page | ||
| SUNSHINE and SOLAR RADIATION See also historical metadate on Sunshine and Solar Radiation tab | ||||
| Sunshine duration | Kipp & Zonen | April 2006 | See parameter web page | |
| Direct Beam | Kipp & Zonen | May 2013 | ||
| Net Radiation | Kipp & Zonen | October 2002 | ||
| Global Solar | Kipp & Zonen | May 2013 | ||
| Diffuse Solar | Kipp & Zonen | May 2013 | ||
| WIND SPEED AND DIRECTION | ||||
| Wind Direction U5 (U10) | Vector Instruments | October 2010 | July 2010 | |
| Wind speed U2 | Vector Instruments | September 2014 | September 2014 | |
| Wind speed U5 (U10) | Vector Instruments | October 2010 | July 2010 | |
| ATMOSPHERIC ELECTRICITY | ||||
| Potential Gradient | Chubb Field mill | July 2013 | ||
| HEAT FLUX | ||||
| Soil Heat flux plate | Hukseflux | April 2011 | February 2011 | |
This page updated January 2018