Gastec P-5 Permeation Tube Sulphur Dioxide

GASTECP-5 Permeation Tube Sulphur Dioxide

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Gastec P-5 Permeation Tube Sulphur DioxideGastec P-5 Permeation Tube Sulphur Dioxide Generating calibration gas with a permeation tube. Concentration range 0.04 – 3.6 ppm.

Generating Calibration gas with a permeation tube
A permeation tube is a fluoro resin tube that contains high-grade liquefied gas. When the tube is exposed to a certain temperature, liquefied gas penetrates the tube wall by osmosis in time increments enabling a specific quantity of gas to be retained in the tube. Consequently, a carrier gas flowing at a constant speed (for calibration purposes) can be continuously generated by keeping the tube at a fixed temperature and infusing a constant quantity of dilution gas. This method is highly reliable because the concentration of the calibration gas is determined by calculating the decrease in weight of the permeation tube and the quantity of dilution gas. This dynamic method also enables highly reactive gases such as chlorine, hydrogen sulphide, or ammonia to be generated. As shown in the table below, there are many different kinds of permeation tubes and they are widely used because they can provide a stable supply of calibration gas.

Here are the features and specifications for the Gastec P-5 Permeation Tube (Sulphur Dioxide).

Product Overview

The Gastec P-5 Permeation Tube is a specialized tool used to generate a continuous, stable, and precise concentration of Sulphur Dioxide ( $SO_2$ ) gas for calibration purposes. It is designed to be used with a gas generator system (permeater), such as the Gastec PD-1C.

Features of Gastec P-5 Permeation Tube Sulphur Dioxide

High Purity: Contains high-grade liquefied Sulphur Dioxide gas within a fluororesin tube.
Stable Generation: When kept at a constant temperature, the gas permeates through the tube wall at a stable rate, allowing for the continuous generation of calibration gas.
High Reliability: The concentration is determined by a physical principle (weight loss over time), making it a primary standard for calibration.
Adjustable Concentration: The final gas concentration can be adjusted by changing the temperature setting of the permeater or the flow rate of the dilution gas.

Specifications of Gastec P-5 Permeation Tube Sulphur Dioxide

Specification	Detail
Model Number	P-5
Target Gas	Sulphur Dioxide ( $SO_2$ )
Concentration Range	0.1 – 7.2 ppm*
Tube Material	Fluororesin (FEP)
Method	Permeation Tube Method
Boiling Point Range	-60°C to +30°C (characteristic of gas inside)
Working Temperature	Typically set at 30°C, 35°C, or 50°C (using a Permeater)
Compatible Equipment	Gastec Permeater (e.g., PD-1C, PD-1B)