Gas Preparation - Siemens SIPROCESS GA700 Operating Instructions Manual

Note
Enable analog and digital outputs
If you subsequently install an option module 2.1, you must enable the analog and digital
outputs using SIMATIC PDM after restarting:
1. Establish a connection between SIMATIC PDM and the analyzer.
You may have to log on at the Expert level.
2. Navigate to: Parameter group overview > Properties > Device
3. For the "Option module 2.1" parameter, set the value "Yes".
4. Transfer the modified parameter assignment to the device.
9.3

Gas preparation

Sample gas and reference gas quality
Note
Gas preparation
The condensation of the sample gas in the gas path and the soiling of the parts through
which the sample gas flows can result in a measured value error or even failure of the
analyzer. To prevent this, the sample gas has to be prepared in accordance with the
measuring task.
In order to keep the sample gas/reference gas free of dusts and condensate, observe the
following information:
● Position the suitable absorption filter before the device in order to filter out corrosive
components or components which interfere with measuring.
● Make sure that the sample gas does not condense in the gas preparation unit and in the
analyzer itself.
Prevent condensation of the sample gas with suitable measures, for example: Connect a
cooler or condensate separator upstream of the device. Heat the device.
We recommend installing the following devices upstream of the sample gas inlet for gas
preparation:
● Gas sampling device with filter
● Sample gas cooler
● Analyzer filter, medium pore size <10 µm
● Gas suction pump
Depending on the composition of the sample gas, you may need additional equipment such
as a wash bottle, additional filters and pressure reducers.
Wall-mounted device
Operating Instructions, 05/2018, A5E31930403-06
Commissioning
9.3 Gas preparation
107