Oxymat 7; Introduction Of Reference Gas - Siemens SIPROCESS GA700 Quick Start Manual

Commissioning: Preparation

7.3 OXYMAT 7

● Make sure that the sample gas does not condense in the gas preparation unit and in the
analyzer itself. Appropriate measures include heated sample gas lines, a heated
analyzer, or a compressor cooler.
● You can install the following devices upstream of the sample gas inlet for gas preparation:
– A gas sampling device
– A sample gas cooler
– A filter
– A 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.
Ensure that gas sampling devices, gas cooling devices, condensate vessels, filters and any
connected controllers, recorders or indicators are ready to operate (see the associated
operating instructions).
7.3 OXYMAT 7
7.3.1

Introduction of reference gas

Note
Composition of the reference gas
Using an unsuitable reference gas can cause the reference gas throttle (capillary tube) to be
closed. The device is then no longer capable of measuring.
Therefore, use dust-free reference gas or a standard dust filter with a mean pore width of
<5 µm in the reference gas inlet.
● Always introduce the reference gas before introducing the sample gas.
● In the case of temporary interruption of the measurements, reference gas should also
always flow. This prevents the sample gas remaining in the measuring chamber from
diffusing to the microflow sensors and possibly destroying them.
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Compact Operating Instructions, 06/2017, A5E31805656-05
Quick Start