Accurate temperature measurements with a degrading thermocouple

1994 ◽  
Vol 37 (11) ◽  
pp. 1277-1282
Author(s):  
Yu. A. Skripnik ◽  
A. I. Khimicheva
Keyword(s):  
Temperature Measurements ◽  
Accurate Temperature

Accurate Temperature Measurements of Birefringence in Fluorene

1979 ◽  
Vol 51 (3-4) ◽  
pp. 215-220 ◽  
Author(s):  
Wlodzimierz J. Kusto ◽  
Jozef W. Rohleder
Keyword(s):  
Temperature Measurements ◽  
Accurate Temperature

scholarly journals Evaluating Temperature Measurements of the iMET-XQ, in the Field, under Varying Atmospheric Conditions

Atmosphere ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 335 ◽  
Author(s):  
Sytske K. Kimball ◽  
Carlos J. Montalvo ◽  
Madhuri S. Mulekar
Keyword(s):  
Wind Speed ◽  
Solar Radiation ◽  
Aluminum Coating ◽  
Temperature Measurements ◽  
Atmospheric Conditions ◽  
Radiation Shield ◽  
Wind Speeds ◽  
Outdoor Setting ◽  
Accurate Temperature ◽  
Reference Sensor

Temperature measurements of InterMET Inc. aluminum-coated iMET-XQ sensors were tested in an outdoor setting under a variety of solar radiation and wind speed conditions. Twelve unshielded sensors were mounted side-by-side on the tower of a South Alabama Mesonet weather station next to a reference sensor on the tower. The iMET-XQ temperatures were most precise and accurate in solar radiation values that were close to zero, regardless of wind speed. Under overcast conditions, wind speeds of 2 m s−1 were sufficient to obtain precise and accurate temperature measurements. During the day-time, aspiration of wind speeds higher than or equal to 3 m s−1 is sufficient. An iMET-XQ was placed in a radiation shield next to the tower reference sensor to test the need for a radiation shield. A second iMET-XQ was placed unshielded on the tower. The iMET-XQ sensors with aluminum coating do not need to be shielded, but they do need to be aspirated. It is recommended that, when taking temperature measurements using unmanned aerial vehicles (UAV) with iMET-XQ sensors, the UAV either fly at 3 m s−1, be embedded in winds of those speeds, or to use the propeller wash of the UAV to aspirate the sensors.

Fiber-optic infrared radiometer for accurate temperature measurements

2002 ◽  
Vol 41 (10) ◽  
pp. 1908 ◽  
Author(s):  
Sharon Sade ◽  
Ophir Eyal ◽  
Vered Scharf ◽  
Abraham Katzir
Keyword(s):  
Fiber Optic ◽  
Temperature Measurements ◽  
Accurate Temperature ◽  
Infrared Radiometer

scholarly journals Temperature Measurements from Surface Drifters

2010 ◽  
Vol 27 (8) ◽  
pp. 1403-1409 ◽  
Author(s):  
G. Reverdin ◽  
J. Boutin ◽  
N. Martin ◽  
A. Lourenco ◽  
P. Bouruet-Aubertot ◽  
...  
Keyword(s):  
North Atlantic ◽  
Initial Temperature ◽  
North Atlantic Ocean ◽  
Temperature Measurements ◽  
Surface Velocity ◽  
Data Systems ◽  
Accurate Temperature ◽  
Surface Drifters ◽  
Conductivity Cell ◽  
Two Temperature

Abstract The accuracy of temperature measurements from drifters is first examined for 16 drifters (manufactured either by Metocean Data Systems or by Pacific Gyre) deployed with two temperature sensors in the tropical or North Atlantic Ocean. One of these sensors is the SST thermistor commonly used on Surface Velocity Program (SVP) drifters since the late 1980s; whereas the other sensor is a platinum temperature probe associated with a Seabird conductivity cell. The authors find (for 19 separate deployments) an average positive offset of the SST thermistor measurements in 17 out of 19 cases, exceeding 0.1°C in five instances. Among the five drifters that were at sea for a year or more, two present a large trend in this offset (0.10° and −0.10°C yr−1); and in two other cases, there is a clear annual cycle of the offset, suggesting a dependency on temperature. Offsets in 9 out of 12 drifters with sea time longer than 4 months present a negative trend, but the average trend is not significantly different from zero. The study also examined 29 drifters from four manufacturers equipped only with the usual SST thermistor, but for which either a precise initial temperature measurement was available or a float was attached to provide accurate temperature measurements (for a duration on the order of a month). These comparisons often identify SST biases at or soon after deployment. This initial bias is null (or slightly negative) for the set of Clearwater Instrumentation’s drifters, it is very small for two out of three sets of Technocean drifters, and positive for the third one, as well as for the set of Pacific Gyre drifters (on the order of 0.05°C).

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