The IGM-CHHR is a humidity module that can be used together with the IGM or MGP2 gas mixers to create different gas mixtures including a certain degree of relative humidity.

Thanks to our advanced gas mixer software, a part of the dry gas mixture will be circulated through the water bubblers and, as a result, the relative humidity of the output gas mixture will reach the desired value. This is done in a very simple way and in such a way that the ppm concentration of the target reference gases will not change. To control the RH generation module you will need to configure the Mixer Control Unit (MCU). The MCU is a standard PLC based system designed to automatically change the flow set points of the gas mixer and moisture module based on the state of a process variable. The MCU will measure the process variable (e.g., RH, temperature, pressure) and modify the flow set points sent to the mass flow controllers depending on the algorithm defined by the expert scientist or engineer.

For example, the MCU can measure the actual RH in the chamber and through a feedback control system the PLC will control the gas mixer and humidity module to automatically reach the desired RH.

This innovative device is the latest creation of our engineering team.