|The Everest Interscience
(Model 6110.4ZL) is a handheld, non-contact infrared thermometer that is used
extensively all over the world to measure temperatures of targets in the natural
environment. This natural environment infrared thermometer has differential
temperature measurement capabilities. The Model 6110.4ZL can measure the surface
temperature of an object, the ambient air dry bulb temperature and the
differential temperature (Patent No. 4,301,682) between these two readings which
is so important when taking temperature measurements in the natural environment.
These handheld, non-contact
infrared thermometers can be variably focused to measure from 2 degrees to 20
degrees with Everest's
focus option (patent pending). The Model 6110.4ZL has Variable Focus, Variable
Field of View and Variable Target Spot Size. They can be used to measure surface
temperatures of objects from the size of a single pine needle to a crop canopy.
As outlined in the
specifications for the AGRI-THERM II (Model 6110.4ZL) it has a temperature
range of -40 degrees C to 100 degrees C or -40 degrees F to 200 degrees F with
accuracy of plus/minus 0.5 degrees C or 1.0 degree F with tenth degree
Also, if Everest's patented
TTL/SLR (Through-The-Lens/Single Lens Reflex) Intra-Optical Light Sighting
(Patent 4,494,881) is incorporated into the infrared thermometer, a flashing,
safe LED light is projected directly through the infrared optics, illuminating
and pinpointing the exact target that is being measured.
Everest Interscience has
concentrated on research and development of extremely accurate low-temperature
infrared thermometers for the natural environment from its inception in 1980.
The designer, Charles E. "Gene" Everest, has been given awards on numerous occasions for his
In 1984 Charles Everest was
awarded the prestigious International Kermit Fischer Award for the "conception,
design and implementation of an infrared thermometer for the field of
environmental science" by the Instrument Society of America. The American
Society of Agricultural Engineers awarded Mr. Everest one of their AE 50 Awards
for three years in a row, starting in 1987.
Mr. Everest was named a Fellow
Member in the Instrument Society of America in 1991 for the "design and
development of low-temperature infrared thermometers for medical and
agricultural applications." Also in 1991, he received First Place from DESIGN
ENGINEERING for the "Most Innovative Product of 1991."
All of his dedication to the
design and development of precision, low-temperature infrared thermometers has
led to an extremely accurate method of measuring surface temperatures in the
natural environment. This is extremely difficult when the temperature of the
infrared thermometer and the temperature of the target are at, or close to, the
same temperature, as the infrared signal is so slight in this situation.
The AGRI-THERM II has been
used extensively worldwide to measure crop canopy temperatures in an attempt to
control irrigation. They have been used in studies involving the Crop Water
Stress Index (CWSI) and the Stress Degree Day (SDD) concepts. The goal is to
improve crop yields while reducing the amount of irrigation needed. More
information on this subject can be read in M. B. Kirkham's book, Principles of
Soil and Plant Water Relations, 2004.
The infrared thermometers are capable of taking surface temperature measurements
in a highly dynamic environment such as having the thermometer taken from an air
conditioned truck into the heat of the desert without giving them time for
equilibration before taking the measurements. Under these environmental
conditions, they respond with accuracy of plus/minus 0.5 degrees C or plus/minus
1.0 degree F.
Everest also provides infrared temperature sensors
(Model No. 4000.4L) that can be mounted in the field and run continuously. And,
the Model 6000.2L miniature
infrared temperature sensors can be used for the same purpose but also include
Vario-Zooom and TTL/SLR features.
For more information, please
contact Everest Interscience.