How Much Nitrogen Gas and Pressure Are Needed for a 250°C Temperature Gauge?

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SUMMARY

The discussion focuses on determining the amount of nitrogen gas and the required pressure for a temperature gauge with a 250°C range and a 2-meter capillary tube. The immersion length for the sensing element is specified as 100mm. Participants emphasize the importance of the gauge and tube specifications, including dimensions and models, to accurately calculate the gas volume and pressure needed. The conversation highlights the necessity of understanding the specific equipment used to provide precise calculations.

PREREQUISITES
  • Understanding of gas laws and pressure calculations
  • Familiarity with temperature gauge specifications
  • Knowledge of nitrogen gas properties
  • Experience with capillary tube dimensions and applications
NEXT STEPS
  • Research the ideal gas law for calculating gas volume and pressure
  • Learn about temperature gauge calibration techniques
  • Investigate the properties of nitrogen gas at varying temperatures
  • Explore specific models of temperature gauges and their operational requirements
USEFUL FOR

Engineers, technicians, and professionals involved in temperature measurement and instrumentation, particularly those working with nitrogen gas-filled gauges and capillary tubes.

kolli Subhash
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Hi,

I Have one Temperature gauge with 2Meter Cpillary. Range is 0-250Deg Centigarde. it was field with Nitrogen gas immersion length (sensing element) was 100mm in the process.
How much gas should field to get the 250Deg Centigarde temperature. and how much pressure is required to field the 'X' amount of gas.

How to calculate these kidly let me know.
 
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Hi,
I have question on gas field temperature gauges. Question: I have a tube OD 10 mm X 1.0 mm WT(wall Thickness) X 100 mm. Temperature range '0 to 50 Deg Centigrade. I want to fill the Nitrogen gas in the tube.

Total Tube Length: 200 mm & Imersion length: 100mm. (i.e; Imersion length is nothing but sensing element, which is used in process).

1. how much gas should fill it?
2. How much pressure is required to fill 'X' amount of gas?

Kindly help me out on this.

Read More at: http://www.instreng.com/community/media/the-differential-pressure-flow-measuring-principle-orifice-nozzle-venturi-youtube.4/
 
Last edited by a moderator:
The gas volume needed will depend on the gauge or sensor fitted to the tube.

What is the make and model of the tube you are using ? Please attach a link to manufacturers site.
What is the make and model of the gauge you are using ? Please attach a link to manufacturers site.

Why do you give a link to Flow Measurement if you want to measure Temperature?
 

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