Calibration gas
generating equipment
The Permeater is a
gas generator for calibration purposes that utilises permeation and diffusion
tubes to generate the calibration gas. When the permeation and diffusion tubes
are set at a constant temperature, the weight of both the permeating and the
evaporating diffusion gas will be respectively set at constant levels.
In this manner, calibration gas is continouusly generated by
setting both tubes at a constant temperature and providing a constant flow of
dilution gas such as air or nitrogen.
This method is highly reliable because
gas concentration levels
are determined based on the dynamic weight loss obtained from measurements such
as rate of permeation diffusion or epavoration diffusion as well as the
quantity of dilution gas
calculated by weight.
[PD-1B]
Event calibration gas of very low concentrations can be continuously generated
[PD-1B-2]
It is possible to have two ventilation system and to
generate two kinds of calibration gas simultaneously
Features
1. Highly reliable because concentration
levels are determined by calculating weight loss based on
2. Measurements and dilution gas volume
3. Many types (both organic and inorganic)
of low-concentration calibration gases) can be generated
4. Gas for calibration of all organic
solvents (as long as they are stable in their liquid state or at normal
temperatures) can be generated
5. Gas for calibration can be generated
continuously for longer periods of time
6. Calibration gas can be easily generated
in a wide range of concentrations
