Other remote party equipment included a mounting tripod, a petrol generator for battery charging, a spare 12 volt battery, a high frequency radio transceiver, clinometer, prismatic compass, plumb-bobs, box measuring-tape, field books, survey station summaries, measuring scheme diagram, protractor, and ruler, as well as a mechanism barometer and a psychrometer
The two most significant deterrents to using an aspirated psychrometer
are the reduced accuracy and repeatability of the measurements in comparison to other, more expensive devices (e.
Plant-based measurements were used to schedule irrigation applications; leaf water potential (LWP) was measured with a thermocouple psychrometer
and stomatal conductance was measured with a steady-state porometer.
The dry bulb air temperature was monitored by thermocouples (Jenway-digital psychrometer
The dry-bulb (DB) and natural wet bulb (NWB) were measured using a "whirling psychrometer
" or Sling's psychrometer
that houses both dry and wet bulb thermometers in wooden grooves.
was used to measure ambient wet- and dry-bulb temperatures from which the relative humidity and air partial pressure were estimated.
N=135 Thermometer 63 yes 72 no Hygrometer 38 yes 97 no Recording hygrothermograph 84 yes 51 no Sling psychrometer
38 yes 97 no Temperature/Humidity data logger 33 yes 102 no Other 6 yes 3.
The instrument recommended for these two measurements is called a psychrometer
and is readily available at a reasonable cost.
Ambient conditions of temperature and humidity before each practice were assessed using a conventional sling psychrometer
(Bacharach, Inc, Pittsburgh, PA; 12-7022, accuracy to [+ or -] 5% relative humidity).
These concepts are clarified via activities such as building an anemometer (to monitor the wind) and a psychrometer
(to measure relative humidity).
Relative humidity and air temperature, using a sling psychrometer
, and surface wind speed, using the Bufort Scale, were estimated before ignition and at the completion of each fire.
Our sports medicine staff uses a "sling psychrometer
," a hand-held instrument that measures the heat stress index before every scheduled workout or practice.
A sling psychrometer
was used twice daily to verify the humidity readings.
2--Measuring the rate of soil moisture from zero to 30 cm depth using TDR psychrometer
The dry- and wet-bulb temperatures of the ambient air were measured using an aspirated psychrometer
with an accuracy of [+ or -]0.