Automated Humidity Controls for Gas Generation
Mon, 01/14/2013 - 9:50am
Kin-Tek has added an automated humidity control option to the FlexStream™ modular gas standards generating system, allowing for simulation of real sample streams. The company says that this solution is characterized by:
- The FlexStream™ system dilutes the emission from permeation or diffusion tubes with an inert gas, typically nitrogen or zero air, to create trace concentration — ppm, ppb and pptr — gas mixtures.
- An internal microprocessor sets the operating mode and adjusts dilution flow to achieve the required concentrations.
- The FlexStream™ HG fits into the system as the end module.
- A portion of the inert dilution gas is saturated with water and mixed with dry, trace component carrying gas to form the humidified mixture.
- Humidity is adjusted by varying the ratio of wet to dry gas.
- Typically, values from 20 to about 90 percent RH can be achieved.
- The system can also be controlled remotely by a PC or process computer using Modbus® connectivity.