Why glycol is used to filled in the impluse tube of level transmitter.

Question

Accepted Answer

Glycol is used in the impulse tube of level transmitter to prevent freezing and ensure accurate measurement.

Glycol has a lower freezing point than water, preventing the impulse tube from freezing in cold temperatures.
Glycol also helps to prevent bacterial growth and corrosion in the impulse tube.
The use of glycol ensures accurate measurement by maintaining a consistent fluid density in the impulse tube.
Common glycols used include ethylene glycol and propylene glycol.
The concentration of glycol used depends on the temperature range and application.
Glycol-filled impulse tubes are commonly used in industries such as oil and gas, chemical, and food and beverage.

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