I am looking for a Pressure Transmitter operating Range 0-600 Degree Celsius for 15" WG, as i wish to monitor a back pressure on Flue Ducts of our Gen-sets, Do note that the Flue Gases temperature ranges around 550°C to 600°C and the operating pressure shall be around 15âWG, also 4-20 mA Output is required in pressure transmitter.

Please advise or share any manufacturer datasheet which meets my requirement. i am unable to find any pressure transmitter having operating range 600 degree Celsius.

 

Pressure transmitters are generally rated to about 125 Deg C body temperature at 85 Deg C ambient.

The connection to the process through the impulse tubing is deadheaded; there is no flow through the impulse tubing. Without flow, there is a relatively high degree of cooling with minimal heat transfer by conduction through either the medium or the tubing itself. So high process temperatures are handled by cooling the medium through a length or run of impulse tubing.

Oral tradition says 1 foot drops 100 deg F and there are minor derivatives.

Kulite issued a paper, "Pressure Transducer Temperature Isolation Using Tubing"

http://www.kulite.com/docs/technical_papers/AN8401HeatTube.pdf

with a formula, but they summarized its 5 pages with the statement,"As a rule of thumb, one foot of steel tubing, any diameter, will isolate a transducer from any temperature."

I agree. There was quite a discussion on this topic back in 2009
http://www.control.com/thread/1335483783#1335483783