Therefore, I removed the text in the article. I cannot find any verification for the unsubstantiated claims for record dew points: Many claims for record dewpoints originate at desert locations when an approaching thunderstorm thrusts a short duration burst of moisture into a location. One problem in determining the record high dewpoint is that most world meteorological stations record temperatures every three hours in contrast to some who claim a high dewpoint record only list a single instantaneous reading often not at an official meteorological station. The year of this event in vague and some evidence suggests that it was in the period 1940-1953. In US Air Force report AFCRL-70-0563 dated 6 October 1970 Grantham and Sissenwine of the Air Force Research Laboratories reported a 33.6☌ (92.5☏) record dewpoint for Sharjah in the month of July. mtn-man answer of 93☏ near Dubai, UAR is often suggested as the world record highest dewpoint temperature however the date of 31 January 2007 is suspect because the weather records for that date at Dubai International Airport and at Sharjah International Airport indicate a maximum recorded dewpoint on that date of 16.8☌ (62.2☏). The record high dew point in the world is 93 degrees, observed near Dubai, on the Persian Gulf in the United Arab Emirates. Will a change in air temperature cause the dew point temperature to change as well? -Preceding unsigned comment added by 216.6.155.118 ( talk) 02:22, 4 December 2009 (UTC) Reply Īnyone know the highest dew point ever recorded? I haven't seen anything above 86F.Īnswer from mtn-man. However, there must be an error in the calculation of relative humidity in the table, since the ranges overlap whereas the temperature ranges does not. njh 10:12, 11 January 2006 (UTC) Reply I think this is explained quite well in the article. I recall some army guy got in an oven and cooked himself at something like 120C for 5 minutes and survived by drinking water and sweating like crazy. Humans can survive surprisingly high ambient temperatures as long as it is dry. Are the physiological reasons known why a high dew point is held to be oppressive? Notinasnaid 15:51, 11 November 2005 (UTC) Reply Because a high dew point -> higher wet bulb temperature -> sweat evaporates less -> less cooling from sweat -> body shuts down to prevent overheating and heat stroke. What is the purpose of the first diagram? It is not really used in the text. I believe (and this is from reading the axis on a Psychrometrics) it is w/w. But what is it a percentage by? Percentage weight, percentage volume, percentage of moles, something else? I understand the diagram shows the percentage of water vapour that can be carried as a component of air at a given temperature. The humidity alarm remote connection is a relay closure (closed on alarm) with a 6800-ohm resistor in parallel.I have two questions / suggestions for extra material.ġ. The buzzer can be disabled by the audible alarm switch. This alarm includes the fl ashing red humidity alarm lamp, the audible alarm(buzzer), and the humidity alarm remote connection. If at any time the outlet air moisture content exceeds the controller’s set point, the controller activates the humidity alarm. A sample valve compatible with a MIL-I-24144 high-pressure frost point indicator is provided. The dew point meter on the front of the control panel displays the current outlet air dew point. The operator may adjust the controller to achieve the desired alarm point. Its impedance varies with the air’s moisture content, and is read by the humidity alarm controller. Measurement is made by a highly sensitive aluminum oxide sensor, which is bathed by a continuous stream ofĪir. Fittings furnished as standard allow easy installation at the end of the HPAC discharge hose. The fi rst installation with an IMD is on USS MAHAN, DDG 72. Here, it is used as a stand-alone device, downstream of an air dehydrator whose built-in monitor/alarm system is unreliable or no longer supported by the original manufacturer, or in conjunction with an inter stage membrane dehydrator (IMD) not containing its own dew point monitor. It is a variation of the system incorporated in our high pressure desiccant air dehydrators. The Model 7149 high-pressure dew point monitor and alarm system is designed to provide a simple, reliable method of measuring the dew point (moisture content) of high-pressure (up to 5000 psig) dry air systems.
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