I think your are asking about the working principle of a pneumatic transmitter. (not transmeter) A pneumatic transmitter measures liquds or air temperatures over a given range-usually a 200 degree temperature range. The range, selected for its purpose could be -40 to +160 or 0 to 200 -as in the case of Honeywell or even 100 deg. ranges, as in the case of say-Johnson Controls. (0-100) Aside from temperature range, the other important criteria is the output of the transmitter. In the case of commercial controls, the correlation of 200 degree temperatures (which is 201 values, not 200) occurs over a pressure span/output of 3 to 15 pounds.(13 values) For example, in the case of a 200 degree transmitter of say 0 to 200 degrees, the zero temperature value output equates to a 3 psi signal. At 200 degrees, the top of the range, the transmitter would output a 15 psi signal. In other words every degree change up from zero degrees would account for a pressure increase (rounded)of .064 psi. (13 pounds divided by 201 degrees)=.0646766) Pneumatic transmitters are typically direct acting and are one-pipe constant bleed devices. Their working principle involves movement of a flapper a given distance in direct response to the sensed temperature acting upon it. As the temperature rises, the bleed port positions itself toward a closed position which allows less air to escape to atmosphere. Less air to atmosphere dictates more air building up in the air line. This value is then transmitted/measured by the controller-which is pneumatically attached to the transmitter.
How many 3s in 313433535333?
Who would you swap lives with for a day?
Is it true that one human year is equal to seven dog years?
Which is the verb in this sentence - it is such a nice day?
A farmer has 19 sheep All but 7 die How many are left?
What is the answer to this India foxtrot Yankee Oscar uniform charlie alpha November uniform November delta echo romeo sierra tango alpha November delta tango hotel India sierra charlie Oscar papa yan?
The more you take the more you leave behind what am I?
What is ri poorch in a brain teaser?
Can eggs break inside a chicken?
Why do books come out in hardback first?
What happens when a beehive gets too full?
What is the difference between an optometrist and an ophthalmologist?
How can you tell when someone's lying?
Why do some people celebrate Christmas in July?
Why is it bad luck to walk under a ladder?
What is a conservatorship?
What is time signature of ncr hymn?
Is Gianluca Ginoble gay?
Paano umusbong ang pagmamahal sa karunungan?
Why the eastern Terai is cooler than than western one OF NEPAL?
Who was giani maan singh jhaur?
Donnie and judy swaggart pictures?
What happened to Jeff Hewson of QVC fame?
Is the Montgomery Bus Boycott capitalized?
Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.